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Industrie De Nora

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FY2012 Annual Report · Industrie De Nora
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2012 Annual Report

Table Of COnTenTs

  1 

Introduction

  2  Financial Highlights

  3  Letter To Shareholders

  8  Overview

 27  Board of Directors

28  Officers

Form 10-K

Corporate Information (Inside Back Cover)

forward-looking statements

The data contained in this annual report that are not historical facts are forward-looking statements that involve a number of risks and uncertainties. Such statements may 
relate to, among other things, forecasted capital expenditures, drilling activity, completion of acquisitions or reserves or future production attributable to them, development 
activities, timing of CO2 injections and initial production response in tertiary flooding projects, estimated costs, production rates and volumes or forecasts thereof, 
hydrocarbon reserve quantities and values, CO2 reserves, helium reserves, potential reserves from tertiary operations, future hydrocarbon prices or assumptions, liquidity, 
cash flows, availability of capital, borrowing capacity, finding costs, rates of return, overall economics, net asset values, estimates of potential or recoverable reserves and 
anticipated production growth rates in our CO2 models, or estimated production in 2013 and future production and expenditure estimates, and availability and cost of 
equipment and services. These forward-looking statements are generally accompanied by words such as “estimated”, “preliminary”, “projected”, “potential”, “anticipated”, 
“forecasted” or other words that convey the uncertainty of future events or outcomes. These statements are based on management’s current plans and assumptions and are 
subject to a number of risks and uncertainties as further outlined in our most recent Form 10-K and Form 10-Q filed with the SEC. Therefore, the actual results may differ 
materially from the expectations, estimates or assumptions expressed in or implied by any forward-looking statement made by or on behalf of the Company.

Cautionary Note to U.S. Investors – Current SEC rules regarding oil and gas reserve information allow oil and gas companies to disclose in filings with the SEC not only 
proved reserves, but also probable and possible reserves that meet the SEC’s definitions of such terms. We disclose only proved reserves in our filings with the SEC. 
Denbury’s proved reserves as of December 31, 2012 were estimated by DeGolyer & MacNaughton, an independent petroleum engineering firm. In this annual report, we 
make reference to probable and possible reserves, some of which have been prepared by our independent engineers and some of which have been prepared by Denbury’s 
internal staff of engineers. In this annual report, we also refer to estimates of original oil in place, resource “potential” or other descriptions of volumes potentially 
recoverable, which in addition to reserves generally classifiable as probable and possible (2P and 3P reserves), include estimates of reserves that do not rise to the 
standards for possible reserves, and which SEC guidelines strictly prohibit us from including in filings with the SEC. These estimates, as well as the estimates of probable 
and possible reserves, are by their nature more speculative than estimates of proved reserves and are subject to greater uncertainties, and accordingly the likelihood of 
recovering those reserves is subject to substantially greater risk.

1

W elcome to 

where different is good. 

Denbury, 

a place 

Here, we work to achieve 

our objectives and are 

accountable for our 

performance. We let our 

strategic vision for CO2 EOR 
shape our goals. Welcome 

to a different kind of oil 

company. Pure Denbury.

FINANCIAL	HIGHLIGHTS

In	thousands,	except	per	share	data	or	otherwise	noted	

2012	

2011	

2010 (1)	

2009	

2008

Year	Ended	December	31,

Consolidated Statements of Operations data:
Revenues	and	other	income	:
	 Oil,	natural	gas,	and	related	product	sales	
	 Other	 	

	 Total	revenues	and	other	income	 	

Net	income	(loss)	attributable	to		
	 Denbury	stockholders	(2)	
Net	income	(loss)	per	common	share:	
	 Basic	
	 Diluted	
Weighted	average	number	of	common	shares
	 outstanding:
	 Basic	
	 Diluted	

Consolidated Statements of Cash Flows data:
	 Cash	provided	by	(used	by):
	 Operating	activities	
Investing	activities		
	 Financing	activities		

Production (average daily):
	 Oil	(Bbls)	 	
	 Natural	gas	(Mcf)	
	 BOE	(6:1)	 	

$	 2,409,867	
46,605	
$	 2,456,472	

$	 2,269,151		
40,173	
$	 2,309,324	

$	 1,793,292	
128,499	
$	 1,921,791	

$	

$	

866,709	
22,441	
889,150	

$	 1,347,010
24,046
$	 1,371,056

525,360	

573,333	

271,723	

(75,156)	

388,396

1.36	
1.35	

1.45	
1.43	

0.73	
0.72	

(0.30)	
(0.30)	

1.59
1.54

385,205	
388,938	

396,023	
400,958	

370,876	
376,255	

246,917	
246,917	

243,935
252,530

$	 1,410,891	
(1,376,841)	
45,768	

$	 1,204,814	
(1,605,958)	
37,968	

$	

855,811	
(354,780)	
(139,753)	

$	

530,599	
(969,714)	
442,637	

$	

774,519
(994,659)
177,102

66,837	
29,109	
71,689	

Unit sales prices — excluding impact of derivative settlements:
$	
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

97.18	
3.05	

$	

Unit sales prices — including impact of derivative settlements:
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

96.77	
5.67	

$	

$	

Costs per BOE:
	 Lease	operating	expenses	
	 Taxes	other	than	income	
	 General	and	administrative	expenses	
	 Depletion,	depreciation	and	amortization	

$	

$	

20.29	
6.10	
5.49	
19.34	

60,736	
29,542	
65,660	

100.03	
4.79	

98.90	
7.34	

21.17	
6.16	
5.24	
17.07	

$	

$	

$	

59,918	
78,057	
72,927	

75.97	
4.63	

71.69	
6.45	

17.67	
4.53	
5.04	
16.32	

$	

$	

$	

36,951	
68,086	
48,299	

57.75	
3.54	

68.63	
3.54	

17.85	
2.45	
5.77	
13.52	

$	

$	

$	

31,436
89,442
46,343

92.73
8.56

90.04
7.74

17.71
3.06
3.36
13.08

Proved oil and natural gas reserves(3):
	 Oil	(MBbls)	
	 Natural	gas	(MMcf)		
	 MBOE	(6:1)	

Proved carbon dioxide reserves: 
	 Gulf	Coast	region	(MMcf)	(4)	
	 Rocky	Mountain	region	(MMcf)	(5)	 	

329,124	
481,641	
409,398	

357,733	
625,208	
461,934	

338,276	
357,893	
397,925	

192,879	
87,975	
207,542	

179,126
427,955
250,452

6,073,175	
3,495,534	

6,685,412	
2,195,534	

7,085,131	
2,189,756	

6,302,836	
—	

5,612,167
—

Proved helium reserves associated with Denbury’s production rights:(6)
	 Rocky	Mountain	region	(MMcf)	 	

12,712	

12,004	

7,159	

—	

—

Consolidated Balance Sheets data:
	 Total	assets	
	 Total	long-term	liabilities	
	 Stockholders’	equity	

$	 11,139,342	
5,408,032	
5,114,889	

$	 10,184,424	
4,716,659	
4,806,498	

$	 9,065,063	
4,105,011	
4,380,707	

$	 4,269,978	
1,903,951	
1,972,237	

$	 3,589,674
1,363,539
1,840,068

(1)	

		On	March	9,	2010,	we	acquired	Encore	Acquisition	Company	(“Encore”).	We	consolidated	Encore’s	results	of	operations	beginning	March	9,	2010.	See	Note	2,	
Acquisitions and Divestitures,	to	the	Consolidated	Financial	Statements	for	further	discussion	of	this	transaction.
	During	2009,	we	had	a	pretax	charge	of	$236.2	million	associated	with	our	commodity	derivative	contracts.	

(2)	
(3)	 			Estimated	proved	reserves	as	of	December	31,	2012,	reflect	the	disposition	of	reserves	associated	with	our	Bakken	area	assets	sold	in	late	2012	

(approximately	109	MMBOE).	Year-end	2012	reserves	reflect	CCA	reserves	acquired	in	2010	as	part	of	the	Encore	Merger,	but	do	not	include	estimated	
reserves	of	approximately	42	MMBOE	related	to	the	CCA	Acquisition,	which	closed	in	March	2013.

(4)	 		Proved	CO2	reserves	in	the	Gulf	Coast	region	consist	of	reserves	from	our	reservoirs	at	Jackson	Dome	and	are	presented	on	a	gross	or	8/8ths	working	

interest	basis,	of	which	our	net	revenue	interest	was	approximately	4.8	Tcf,	5.3	Tcf,	5.6	Tcf,	5.0	Tcf	and	4.5	Tcf	at	December	31,	2012,	2011,	2010,	2009	and	
2008,	respectively,	and	include	reserves	dedicated	to	volumetric	production	payments	of	57.1	Bcf,	84.7	Bcf,	100.2	Bcf,	127.1	Bcf	and	153.8	Bcf	at	December	
31,	2012,	2011,	2010,	2009	and	2008,	respectively.	(See	Note	15,	Supplemental CO2 and Helium Disclosures (Unaudited),	to	the	Consolidated	Financial	
Statements.)

(5)	 		Proved	CO2	reserves	in	the	Rocky	Mountain	region	consist	of	our	reserves	at	Riley	Ridge	(presented	on	a	gross	working	interest	basis)	and	our	overriding	
royalty	interest	in	LaBarge	Field,	of	which	our	net	revenue	interest	was	approximately	2.9	Tcf,	1.6	Tcf	and	0.9	Tcf	at	December	31,	2012,	2011,	and	2010,	
respectively.

(6)	 		Reserves	associated	with	helium	production	rights	include	helium	reserves	located	in	the	acreage	in	the	Rocky	Mountain	region	for	which	we	have	the	

right	to	extract	the	helium.	The	U.S.	government	retains	title	to	the	helium	reserves,	and	we	retain	the	right	to	extract	and	sell	the	helium	on	behalf	of	the	
government	in	exchange	for	a	fee.	The	estimate	of	helium	reserves	is	reduced	to	reflect	the	related	fee	we	will	remit	to	the	U.S.	government.

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DE AR	SH AREHOLDERS:

I am happy to report the past 12 months have been a very active and 

productive period at Denbury.

On the operational front, we delivered on our targets for the year as 

the actions we took to address the operational challenges we faced in 

2011 proved successful. Quarterly oil production from our core business, 

enhanced oil recovery with carbon dioxide (“CO2 EOR” or “tertiary 

recovery”), reached record levels as a result of continued expansion of our 

existing CO2 floods and steady production growth at our two newest floods, 

Hastings and Oyster Bayou. With our strong tertiary production rates to-

date in 2013, we are off to a positive start to the year and are optimistic 

about continuing to deliver on our production growth estimates. 

The headline news for last year is the series of acquisitions and 

dispositions that aggregated over $4 billion of value and have all been 

completed, on a tax efficient basis. This series of Company transforming 

transactions worked out even better than we had envisioned. Following 

are some of the highlights: 

On the transaction 
front, we’ve 
completed deals 
with over $4 billion 
of aggregate value 
over the past  
12 months.

Proved Tertiary Oil Reserves 
MMBBLS

Hastings

oyster Bayou

DelHi

tinsley
HeiDelBerg
Mature FielDs

0
1 6
5

0
2 7
6

5
8 3

0 2
2

6 8

3
6
1

7
4
1

4
3
1

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2
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0
2

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9
9

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0

1
0

2
0

3
0

4
0

5
0

6
0

7
0

8
0

9
0

0
1

1
1

2
1

December 31,

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•  We sharpened our strategic focus on CO2 EOR where we have a  

strategic and competitive advantage, setting us up to be a pure CO2 EOR 
play. Today, nearly every field we own is either a current or planned  

CO2 EOR flood.

•  We increased our potential CO2 EOR reserves by nearly 210 million 

barrels which, even with the Bakken divestiture, results in a net increase 

in our total potential reserves. Further, we expect the additional 

potential CO2 EOR will add more value for Denbury shareholders than 
the potential Bakken reserves that we sold. We estimate that we now 

have over 700 million barrels of potential CO2 EOR reserves in our 
inventory, which gives us more than a decade of growth and will create 

substantial value for our shareholders. 

•  We nearly replaced the production of the sold assets with production 

from the acquired assets. This was accomplished with a corresponding 

minor impact on current cash flow.

Tinsley EOR facility

•  We exchanged proved reserves that were predominantly proved 

undeveloped for proved reserves that are primarily proved developed 

producing, which significantly increases our free cash flow (cash flow 

from operations less capital expenditures). In summary, our proved 

developed reserves increased as a result of the transactions while our 

total proved reserves decreased. More specifically, it would have required 

more than $1.7 billion of future capital expenditures to realize the proved 

undeveloped reserves associated with the sold Bakken assets. In contrast, 

the acquired assets will require less than $100 million of future 

development costs to realize the proved conventional reserves. 

• 

In addition to the exchange of oil properties, with the net funds received 

from the transactions, we acquired 1.3 trillion cubic feet of Rocky 

Mountain region CO2 reserves, with up to 115 million cubic feet per day  

of deliverability. These CO2 reserves will allow us to develop one of the 
acquired oil fields in that region, Hartzog Draw, more quickly than would 

have been possible using our CO2 reserves from Riley Ridge, our primary 

source of CO2 reserves in the Rocky Mountain region. We also intend to 

use these CO2 reserves for other future CO2 EOR floods in the region.

DENBURY RESOURCES INC. 
 
The final component in this series of transactions, which we completed 

in March 2013, was the acquisition of ConocoPhillips’ property interests 

in the Cedar Creek Anticline (“CCA”) for $1.05 billion, before purchase 

price adjustments. We were able to structure the purchase as a like-kind-

exchange, allowing us to defer approximately $400 million of taxes on 

the gain from our Bakken exchange transaction with ExxonMobil. This 

acquisition increased our interests in an area that was already our largest 

in the Rocky Mountain region. Consolidating our assets in this area should 

allow us to benefit from economies of scale and leverage our planned  

CO2 transportation infrastructure. In fact, all of the future CO2 EOR 

fields we acquired over the past 12 months are very close to existing or 

planned pipeline infrastructure, allowing us to amortize that pipeline cost 

over millions of additional barrels, and improving the returns on these 

incremental acquisitions.

While the headline news may be the acquisitions and dispositions, we 

had many other positive events during 2012. For example, we completed 

on-time and on-budget the construction of our first major CO2 pipeline 

in the Rocky Mountain region. The initial 232-mile segment of the 20-inch 

Greencore pipeline connects the CO2 coming from ConocoPhillips’ Lost 

Cabin gas plant to our Bell Creek oil field. This pipeline is a strategic asset 

for us as it will ultimately be the backbone of our planned Rocky Mountain 

region pipeline infrastructure to transport CO2 to our oil fields. 

Another notable development in the past 12 months is that we began 

receiving our first man-made or anthropogenic CO2 from Air Products in 

the Texas Gulf Coast region. CO2 deliveries from this facility are expected 

to approach 50 million cubic feet per day later this year. This project 

illustrates our unique ability to use and store anthropogenic CO2 that would 

otherwise be released in the atmosphere. We’re highly encouraged by the 

opportunities we see to further expand our anthropogenic CO2 sources in 

the coming years.

During 2012 we continued to opportunistically execute our common 

stock repurchase program initially authorized in 2011. We believe our 

stock has been undervalued, and even today our stock is trading below 

We completed 
on-time and 
on-budget the 
construction of  
our first major  
CO2 pipeline in  
the Rocky 
Mountain region.

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Following our 
recent debt 
issuance, our  
capital structure  
is stronger  
than ever.

the net asset value of our proved oil and natural gas reserves and at levels 

that completely ignore the significant incremental value of our potential 

CO2 EOR reserves. After a pause during the first three quarters of 2012, 

we resumed the repurchase program in earnest after we announced our 

Bakken exchange transaction, using the increased liquidity enabled by 

the Bakken disposition. As of the date of this letter, we have purchased 

approximately 35 million common shares or 9% of our outstanding shares 

when we began the program, at an average price of just over $15 per share. 

The program has benefitted all shareholders and has also improved our 

per-share metrics by approximately 9%. Our repurchase program remains 

in place with approximately $250 million remaining authorized, although 

our repurchases have slowed as our stock price has improved. We intend 

to be opportunistic with this program throughout 2013 depending on a 

number of factors.

On the finance front, in early 2013 we issued $1.2 billion of long-term 

senior subordinated notes with a coupon rate of 4.625%. The interest 

rate for the notes was the lowest on record for a non-investment grade 

subordinated notes offering, which illustrates the market’s confidence 

in our company and our outlook. Once fully expended, proceeds from the 

offering will have been used to repay about $650 million principal amount 

of subordinated notes with a weighted average interest rate of about 

9.7%, with most of the remainder used to repay bank debt. Following 

the issuance, our capital structure is stronger than ever, with our next 

scheduled senior subordinated note maturity not until 2020. 

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DENBURY RESOURCES INC. 
 
In summary, it has been a remarkable past 12 months for Denbury. As 

we begin 2013, we are “PURE-ly” focused on what we do best: CO2 EOR, 

which we believe offers one of the most compelling risk/reward profiles 

in the oil and gas industry today. We have excellent visibility on long-term 

oil production growth in our two core regions; our strong balance sheet 

provides us tremendous financial flexibility; and our workforce of highly 

technical, dedicated and motivated employees is focused on executing our 

unique strategy. We look forward to more positive results in 2013 and beyond 

as we continue to build on our highly profitable, lower-risk oil platform.

Sincerely,

Phil	Rykhoek	

President and Chief Executive Officer

March 28, 2013

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2012 ANNUAL REPORT 
 
 
roven 
process

CO2 EOR is one of the most efficient tertiary oil  
recovery methods and is estimated to be capable of 
delivering as much production as primary or secondary 
recovery. Since 1999, we have grown our CO2 EOR 
production at a compound annual rate of nearly 30% and 
have produced over 70 million barrels of oil from CO2 EOR 
to-date. Pure Denbury.

CO2 EOR is a Proven Process that has been utilized for decades in a wide 

range of oil fields across North America. Total U.S. oil production using  

CO2 EOR is estimated to be approaching 300,000 barrels per day from long-
running and successful CO2 floods in the Permian Basin, Rocky Mountain, Gulf 
Coast and Mid-Continent regions. CO2 EOR is also being used to successfully 
increase oil production from several oil fields in western Canada. 

Successfully executing a CO2 EOR strategy requires four key components: 
1) a large supply of CO2; 2) oil fields with large amounts of oil in place that are 
well suited for CO2 flooding (a good first indicator is whether a field has been 
successfully water flooded); 3) pipelines to transport the CO2 from the source 
to the field; and 4) the proven technical and operational ability to install 

and operate a CO2 flood. In most oil fields in the United States, primary and 
secondary oil recovery methods recover only up to about 40% of the original oil 

in place. When CO2 is injected into oil bearing formations, it acts somewhat like 
a solvent, mixing with the oil and ultimately freeing the oil from the formation 

TOTAL U.S. CO2 EOR Oil Production by Region

gulF Coast/otHer

MiD-Continent

roCky Mountains

PerMian Basin

)

d
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b
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(

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300,000

200,000

100,000

0

6
8

8
8

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9

2
9

4
9

6
9

8
9

0
0

2
0

4
0

6
0

8
0

0
1

2
1

Source: Oil and Gas Journal, July 2012

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OUR CO2 CYCLE CONSISTS OF THE FOUR STEPS ILLUSTRATED BELOW. WE CAPTURE 
CARBON DIOXIDE AND TRANSPORT IT TO MATURE OIL FIELDS TO INCREASE 
PRODUCTION AND CREATE NUMEROUS ECONOMIC AND SOCIAL BENEFITS.

ST EP	1:	
CO2	SOURCES	&	CAPTURE

We source CO2 from Jackson Dome in 
Mississippi and from LaBarge and Lost 

Cabin in Wyoming. Additionally, we 
source anthropogenic (man-made) CO2 
volumes from industrial facilities and 
expect to obtain more anthropogenic CO2 
in the future. CO2 capture occurs when 
anthropogenic CO2 is purified and dried  
for transportation to oil fields.

ST EP	4:	
CO2	ST RATEGIC	BENEFITS

After the CO2 EOR process is complete, 
the CO2 is stored in the geological 
formation that originally trapped the 

oil. Oil production from our fields in the 

United States enriches local economies, 

royalty owners and our shareholders 

while reducing America’s dependence on 

imported oil.

ST EP	2:	
CO2	TR ANSPORTATION

We operate or control nearly 1,100 miles 
of CO2 pipelines, more than 900 miles of 
which distribute CO2 from Jackson Dome 
to oil fields we operate in the Gulf Coast 

region. In 2012, we completed the initial 

232-mile segment of the 20-inch Greencore 
CO2 pipeline, which will transport CO2 from 
our sources to our operated oil fields in the 

Rocky Mountain region.

ST EP	3:	
CO2	EOR	&	STORAGE

Our CO2 EOR operations allow us to  
recover significant amounts of otherwise 

stranded oil from existing oil fields 

while also providing a way to store 
anthropogenic CO2.

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Our asset base 
today consists 
almost entirely of 
current and future 
CO2 EOR projects.

as it moves through the reservoir rock. Our experience using this Proven Process 

has shown us that CO2 EOR can allow us to produce as much as 50% more oil in a 
field that previously used primary and secondary recovery methods.

We began our CO2 EOR operations in 1999, when we acquired Little Creek 

Field, followed by our acquisition of Jackson Dome CO2 reserves and the  
NEJD pipeline in 2001. With our success at Little Creek and the ownership of  

CO2 reserves and transportation infrastructure, we began to transition our 
capital spending and acquisition efforts to focus a greater percentage on 

CO2 EOR. Over time, our strategy has transformed to focus almost exclusively 
on CO2 EOR projects, and using this Proven Process we have grown our oil 
production from  CO2 EOR at a compound annual rate of nearly 30% over the 
last 13 years. We focus on consistently improving the process by utilizing the 

concepts we have successfully applied over the many years we have operated 

CO2 EOR projects.

We believe using a Proven Process like CO 2 EOR involves less re-investment 

risk than more traditional oil & gas development, which requires companies  

to constantly look for and develop new oil plays. CO2 EOR is utilized in oil fields 
that have significant historical production as well as reservoir and geological 

data that indicate large amounts of oil remain in the field that is recoverable 

through this process. Further, the results of our own and others’  

CO2 floods indicate there is a higher range of certainty associated with the 
ultimate oil recovery with a CO2 flood. The lowest incremental recovery factor 
from one of our CO2 floods is still estimated to exceed 10% of the original oil 
in place (“OOIP”), while the highest recovery factor is estimated to exceed 

20%. The data available on other companies’ CO2 floods indicates similar 
results across a large number of oil fields in numerous basins. In contrast, 

Ranges of Oil Recovery from CO2 EOR Projects

)

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25

20

15

10

5

0

High

low

Actual	Industry	Recovery	Curves

range of 

recoveries 
using Co2 eor
(10%-25%)

% Pore Volume Injected

DENBURY RESOURCES INC. 
 
 
 
 
We currently  
plan to grow 
our CO2 EOR 
production for 
the next decade.

there is typically very little certainty a new oil play will result in economic oil 

production, even after significant capital investment. 

The crux of our strategy to cost-effectively use this Proven Process revolves 

around purchasing a major anchor oil field in a geographic region known 

to contain a large number 

of prolific oil fields that still 

contain significant amounts 

of oil in place. After acquiring 

an anchor field, we build 

or acquire the necessary 

CO2 supply and pipeline 
infrastructure, and then 

acquire other oil fields in the 

expansion area that we can 

Greencore Pipeline construction

flood with CO2. We believe this concept works particularly well for incremental 
acquisitions, which generally have better economics because the significant 

infrastructure dollars are already invested and only minor CO2 pipeline 
expansions are required.

The key driver of our acquisition of Encore in 2010 was to expand our use  

of this Proven Process to the Rocky Mountain region, an area with  

long-established oil production and large amounts of oil in place. The anchor 

field in the acquisition was the Cedar Creek Anticline (“CCA”) of Montana and 

North Dakota, with estimated OOIP of over three billion barrels. With the 

Encore acquisition came a significant acreage position in the Bakken oil shale 

play in North Dakota and Montana. After having increased the value of these  

Bakken-area assets from very little at the time we acquired them to nearly  

$2 billion, we entered into our Bakken exchange transaction with ExxonMobil.  

In the transaction, we leveraged our Bakken position to acquire prolific oil fields 

in both the Rocky Mountain and Gulf Coast regions that are candidates for  

CO2 flooding, while also adding incremental CO2 resources in the Rocky 
Mountain region. Perhaps just as importantly, we subsequently used  

$1.0 billion of the $1.3 billion cash proceeds from that deal to acquire 

additional producing property interests in the CCA from ConocoPhillips.

Our asset base today consists almost entirely of current and future  

CO2 EOR projects. Of our total proved reserves of over 450 million barrels of oil 
equivalent at year-end 2012, inclusive of the recently completed CCA acquisition, 

approximately half come from CO2 EOR projects. In addition to our proven 
reserves, we estimate our asset base holds nearly 770 million barrels of oil 

equivalent of potential reserves, approximately 94% of which are associated 

with CO2 EOR projects. Through the development of our large resource base 
using this Proven Process, we currently plan to grow our CO2 EOR production  
for the next decade.

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2012 ANNUAL REPORT14

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Denbury’s unique ability to store CO2 while increasing 
oil production from otherwise depleted oil fields has 
provided strong production growth. Our strategy 
is supported by over 1,000 miles of CO2 pipeline 
infrastructure and access to large CO2 resources in the 
Gulf Coast and Rocky Mountain regions. Pure Denbury. 

Denbury is different from our peers in that our primary operational focus 

is CO2 EOR. Our Unique Strategy is the result of the superior returns we have 
consistently generated from our CO2 EOR operations and our strategic decision 
to make it our core business. We believe our CO2 EOR recovery operations 
provide significant and sustainable production growth potential at attractive 

rates of return, with relatively low risk; accordingly, we expect CO2 EOR will be 
the backbone of our growth for the foreseeable future. Successfully executing 

a CO2 EOR strategy requires four key components: 1) a large supply of CO2;  
2) oil fields with large amounts of oil in place that are well suited for CO2 
flooding (a good first indicator is whether a field has been successfully water 

flooded); 3) pipelines to transport the CO2 from the source to the field; and  
4) the proven technical and operational ability to install and operate a CO2 
flood. We believe the reason CO2 EOR is not more widespread is simply because 
most other oil companies do not have one of these critical components and 

thus usually face a significant barrier to entry.  

More Than a Billion Barrels of Oil Potential

oil

natural gas 

+

+

+

+

=

12/31/12 
Proven  
reserves (1)
409 
MMBoe

CCa Proven 
reserves(2)

42  
MMBoe

eor 
Potential

647 
MMBbls

additional 
CCa Co2 
Potential(3)

riley ridge 
natural gas 
Potential

70 

MMBbls

46  
MMBoe

total 
Potential

1,220 
MMBoe

(1)  Based on year-end 12/31/12 proved reserves prepared by Degolyer and Macnaughton.
(2)  estimated year-end 12/31/12 proved reserves acquired in March 2013.
(3)  Potential tertiary oil reserves estimate based on a variety of recovery factors.

 
 
nique
strategy

16

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Our Unique 
Strategy is 
readily apparent 
in the strategic 
transactions  
we’ve completed 
over the past  
12 months.

By controlling these four components, we expect to continue to generate 

strong returns from our CO2 EOR operations for many years to come. 

Our Unique Strategy is readily apparent in the strategic transactions 

 we’ve completed over the past 12 months. The largest of these transactions 

involved the sale and exchange of our Bakken area assets with ExxonMobil. 

The Bakken oil shale play is currently one of the most active plays in the 

United States, and the acreage we owned in the play was desired by numerous 

oil and gas companies. ExxonMobil’s desire to expand their Bakken-area 

interests meshed with our desire to expand our CO2 EOR operations and Rocky 
Mountain CO2 supply. As a result, we were able to consummate a transaction 
that we believe was a win for both parties. 

With CO2 EOR, we are using a proven process and are operating in oil  
fields that are known to still hold large reserves of oil. As a result, all of our  

CO2 floods have generated positive returns on our investment. In contrast, 
a shale play may require a tremendous amount of investment to fully 

understand the play to determine that a sufficient amount of oil or gas  

is in place and can be economically recovered. Shale development, therefore, 

may have a wider range of outcomes early in the play. One of those outcomes 

may be that the play is deemed to be uneconomic, and no return is generated 

on the significant dollars invested. 

Projected Production Profile with Same Capital Spending

gulf Coast eor field

Bakken

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Number of Years

DENBURY RESOURCES INC. 
 
Another notable difference between CO2 EOR and a shale play is  
the production type curves. Peak production from shale wells generally 

occurs when they are initially completed and the production rate may 

decline by over 50% in the first year. In contrast, a CO2 flood typically 
requires several years to reach its peak production rate, and production 

may remain at this rate for a few years. It is these characteristics that we 

believe allow us to sustainably generate more production for a dollar we 

invest in a CO2 flood than in a shale play. The rapid first-year decline rates 
typical of shale wells also create a growing investment “treadmill” that 

requires ever-growing amounts of capital to maintain production growth. 

In contrast, with a CO2 flood we expect to generate modest production 
growth and free cash flow after the upfront infrastructure investments 

required to initiate a CO2 flood are complete.

We expect to  
generate moderate  
production  
growth and free 
cash flow after 
the upfront 
infrastructure 
investments 
required to initiate 
a CO2 flood are 
complete.

Operator at Hastings EOR facility

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2012 ANNUAL REPORTWe currently estimate the total resource potential 
of our Gulf Coast and Rocky Mountain region assets 
at nearly 1.3 billion barrels of oil equivalent.

GULF	COAST	REGION:	POTENTIAL	TERTIARY	OIL	RESERvES(1)

Delhi 
36 MMBbls

MS

AL

Tinsley
46 MMBbls

Jackson  
Dome

Delta Pipeline

Mississippi  
Power

Heidelberg	
44 MMBbls

Free State  
Pipeline

LA

Sonat MS  
  Pipeline

Mature Area	
178 MMBbls

Green Pipeline

NEJD Pipeline

PCS Nitrogen

Leucadia

Air Products

Oyster Bayou
20–30 MMBbls

Summary (MMBbls)

Proved	

Potential(3)	

Produced-to-Date	

Total(3)	

201

717

71

989

Headquarters

TX

Conroe
130 MMBbls

Houston Area
160–235 MMBbls

Hastings 
60–80 MMBbls

Webster 
60–75 MMBbls

Thompson 
30–60 MMBbls

Other 
10–20 MMBbls

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RO CkY	MOUNTAIN	REGION:	POTENTIAL	TERTIARY	OIL	RESERvES(2)

MT

Cedar Creek 
Anticline (4)
260–280  
MMBbls

Bell Creek
30 MMBbls

Greencore  
Pipeline
232 miles

WY

Lost Cabin

Riley Ridge

Shute Creek

DKRW

Grieve
6 MMBbls

Hartzog 
Draw
20–30  
MMBbls

ND

SD

Headquarters

Denbury	CO2 EOR	Fields

Existing	Denbury	CO2	Pipelines

Denbury	Future	CO2	EOR	Fields

Denbury	Proposed	CO2	Pipelines

CO2	Reserves	Owned

CO2	Pipelines	Not	Owned	or		
Operated	by	Denbury

Existing	or	Proposed	Anthropogenic	CO2	
Source	Contracted

(1)  Potential tertiary oil reserves as of 12/31/12, including past production, based on a range  

of recovery factors.

(2) Potential tertiary oil reserve estimates at 12/31/12, based on a range of recovery factors.
(3) using mid-points of ranges.
(4) CCa includes recently closed acquisition.

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epeatable
growth

We anticipate a decade of CO2 EOR production growth 
from existing fields. In 2012, we acquired additional fields 
that will allow us to build on our leading position in  
CO2 EOR. Pure Denbury. 

Since 1999, we have consistently grown production from our CO2 EOR 
operations from just over 1,000 barrels per day of oil from Little Creek Field 

to combined tertiary production of nearly 38,000 barrels of oil per day in the 

fourth quarter of 2012. Looking to the future, we see at least another decade 

of Repeatable Growth from our CO 2 EOR operations as we develop our existing 
inventory of projects. 

With one of the most experienced CO2 EOR teams in the industry, 
significant CO2 reserves and transportation infrastructure, and a plentiful 
inventory of long-lived CO2 EOR assets in the Gulf Coast and Rocky Mountain 
regions, together with a strong financial position, Denbury has a pure and 

powerful platform for Repeatable Growth. The planned development of our 

existing inventory of projects is expected to grow our CO2 EOR production to 
over 100,000 barrels of oil per day by 2022, thereby creating significant value 

for our shareholders. 

Our strategic and significant CO2 supplies, ownership and control over 
1,000 miles of CO2 pipeline differentiate us from our peers and support our 
Repeatable Growth outlook. We own and operate the Jackson Dome Field, the 

only significant known natural source of CO2 in the Gulf Coast region, allowing 
us to significantly grow our tertiary production. In addition to this natural 

We Anticipate EOR Production Growth Through 2022(1)

)

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expected Peak 
Co2 eor Cap-ex

100,000+
Bbls/d

i o n

t

g r o w i n g   P r o d u c

= Free  
Cash Flow

Declining Cap-ex

35,206
Bbls/d

Planned New Floods

>	Bell	Creek
>	Webster

>	Hartzog	Draw
>	Conroe

>	Cedar	Creek	Anticline
>	Thompson

2012

2017

2022

(1)  2013 and future forecasted capital expenditures and production may differ materially from actual 

results. Does not include recently announced incremental CCa acquisition. 

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Owning and 
operating 
CO2 pipeline 
infrastructure is  
a key element of 
our Repeatable 
Growth strategy.

source of CO2, we have and continue to pursue man-made or anthropogenic 
sources of CO2. We have entered into numerous contracts to purchase  
man-made CO2 from existing or proposed plants or sources in the Gulf Coast 
region. We recently started receiving our first anthropogenic CO2 into our Gulf 
Coast pipeline system from an industrial facility. We believe our CO2 reserves 
at Jackson Dome, combined with current and expected future anthropogenic 

supplies, are sufficient to provide all of the CO2 for our existing and currently 
planned tertiary operations in the Gulf Coast region.

In the Rocky Mountain region, we acquired approximately a one-

third ownership interest (in the form of an overriding royalty interest) in 

ExxonMobil’s LaBarge Field’s CO2 reserves in 2012 as part of our Bakken 
exchange transaction. Based on current capacity, we expect to receive up to 

approximately 115 MMcf/d of CO2 from their facility. The CO2 we receive from 
LaBarge, combined with what we expect to produce from our Riley Ridge 

facility, will be the backbone of our aggressive Rocky Mountain region CO2 
EOR expansion plans. We have also entered into contracts with existing and 

proposed gas plants to purchase CO2, including ConocoPhillips’ Lost Cabin gas 
plant in central Wyoming. We recently began purchasing CO2 from the Lost 
Cabin facility and expect to start injecting the CO2 into our Bell Creek Field in 
the first half of 2013. 

Owning and operating CO2 pipeline infrastructure is a key element of our 
Repeatable Growth strategy. We are growing our CO2 pipeline network to reach 
targeted oil fields, and we currently operate or control nearly 1,100 miles of 

CO2 pipelines. In 2010, we completed the construction of the Green Pipeline, 
which allowed us to start injecting CO2 into Hastings Field, near Houston, Texas. 
The Green Pipeline gives us the ability to deliver CO2 to oil fields all along the 
Gulf Coast from Baton Rouge, Louisiana, to Alvin, Texas. The 20-inch Greencore 

Pipeline in Wyoming is our first CO2 pipeline in the Rocky Mountain region. As 
currently planned, the Greencore Pipeline will serve as our trunk line in the 

Rocky Mountain region, eventually connecting our Lost Cabin, LaBarge and 

Riley Ridge CO2 sources to the CCA oil fields in eastern Montana. In 2012, we 
completed the initial 232-mile section of the Greencore Pipeline which begins 

at the Lost Cabin gas plant and terminates at the Bell Creek Field in Montana. 

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DENBURY RESOURCES INC.The Rocky 
Mountain region 
is an integral part 
of our Repeatable 
Growth outlook.

We’ve been developing oil fields in the Gulf Coast region with CO2 EOR for 
over 13 years, and now operate 16 active floods. Most of our proved reserves 

growth in 2012 was attributable to the most recent floods at Oyster Bayou 

and Hastings fields. We also plan to flood additional large fields in the Gulf 

Coast: the recently acquired Webster Field; Conroe Field, purchased a few 

years ago; and Thompson Field, acquired last year. 

We acquired the first Rocky Mountain region oil fields that we plan to 

develop with CO2 EOR as part of the 2010 Encore acquisition. While we have 
significantly fewer oil fields and less CO2 pipeline infrastructure in this region 
than in the Gulf Coast region, we are aggressively developing both. The Rocky 

Mountain region is an integral part of our Repeatable Growth outlook. With 

our acquisition of the Hartzog Draw Field in 2012, we now own four Rocky 

Mountain region fields that we plan to flood with CO2, and we expect to 
acquire additional fields in the future. We recently commenced CO2 injections 
into our first field in the region and expect to start injections into a second 

field in the first half of 2013. We expect our first Rocky Mountain tertiary oil 

production in the second half of 2013 from Bell Creek Field.

In reports released by the U.S. Department of Energy, it was estimated that 

the Gulf Coast region (Alabama, Mississippi, Louisiana and southeast Texas) 

originally contained approximately 79 billion barrels of oil in place. In the 

Rocky Mountain region (Montana, North Dakota, South Dakota and Wyoming), 

it was estimated that the original oil in place was approximately 36 billion  

barrels. Assuming that sufficient supplies of CO2 are captured and delivered to 
the oil fields in these regions, 

the reports estimate that there 

are up to 7.5 billion barrels of 

OOIP in the Gulf Coast region 

and up to 3.2 billion barrels 

of oil in the Rocky Mountain 

region that could be recovered 

through CO2 EOR. Our year-
end 2012 estimated CO2 EOR 
resource potential represented 

Welding at Hastings Field

less than 10% of the estimated recoverable resources combined. Most of the 

other 90% of the estimated recoverable resource are in fields that we may 

acquire in the future to continue our Repeatable Growth for many, many years 

to come.

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2012 ANNUAL REPORT24

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CO2 EOR allows us to use and store CO2 captured from 
industrial facilities and results in net carbon reduction, 
even after considering the carbon created from the oil 
we produce. Pure Denbury. 

At Denbury, we strive to be Environmentally Responsible in all aspects of 

our operations. With our focus on CO2 EOR, we offer several environmental 
benefits not generally associated with oil and gas operations. Perhaps most 

significantly, CO2 EOR is increasingly being viewed as a strategy to reduce 
carbon emissions from various current and proposed industrial facilities. Our 

CO2 EOR process provides an economical and technically feasible method of 
CO2 disposal, making our nation more energy secure at the same time. Putting 
CO2 to work as a commodity rather than as a waste is just common sense.

Many industrial facilities produce large volumes of CO2, particularly fossil 
fuel power plants, chemical plants, and refineries. In these plants, carbon in 

the form of coal, oil or natural gas is combusted, releasing CO2 as a byproduct 
and resulting in increasing amounts of CO2 in our atmosphere. It has been 

proposed by those concerned about atmospheric  

CO2 levels that these emissions be reduced by some 
means. Today, the only practical method of reducing  

CO2 emissions is to store them in underground  
reservoirs. Our expanding CO2 EOR operations provide  
an Environmentally Responsible method of transporting 

and storing these CO2 volumes in oil reservoirs, while 
having the additional benefit of increasing domestic 

Reclaimed Green Pipeline habitat

supplies of oil at the same time.

Our CO2 EOR projects inject approximately 0.52 to 

0.64 metric tons of CO2 for every barrel of oil recovered, compared to the 
0.42 metric tons of CO2 released when the oil is consumed. When we can use 
anthropogenic CO2, these CO2 EOR projects ultimately store between 24% and 
52% more CO2 than the recovered oil will release when the oil is utilized in 
a combustion process. There is no question that oil produced from CO2 EOR 
using anthropogenic CO2 has a smaller carbon footprint and is, therefore, more 
Environmentally Responsible than using oil that is produced by a method that 

stores no CO2 emissions.

Because CO2 EOR involves the development of existing oil fields, we have 
the ability to add to our nation’s oil production with little, if any, additional 

environmental impact. Further, the mature oil fields that we acquire and 

develop often contain aging equipment and/or pipelines. As part of being 

 
 
nvironmentally
       responsible

26

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Because CO2 EOR is 
capital intensive, 
large sums of 
money are injected 
into local and state 
economies where 
we operate.

Environmentally Responsible stewards of these newly acquired properties, 

our process to increase oil production from mature oil fields with CO2 EOR 
includes a comprehensive environmental assessment and remediation 

program that addresses environmental issues, equips the field with updated 

technology and results in a more environmentally benign operation that is 

cleaner and “greener” than what existed before. 

In addition to our focus on environmental responsibility, Denbury 

constantly strives to be a Responsible member of the communities in which 

we live and work. We are proud of the numerous benefits our activities bring 

to these areas and to our country as a whole by reducing our dependence on 

imported oil. Because CO2 EOR is capital intensive, we inject large sums of 
money into local and state economies where we operate. Reactivating and 

increasing oil production in mature oil fields results in increased revenue to 

the mineral owners; additional severance, ad valorem and sales tax revenues 

to state and local governments; and job growth that benefits local economies. 

At Denbury, we encourage our employees to give generously and 

Responsibly to charitable organizations of their choice, and we support their 

contributions with our gift-matching program. Further, our employee-driven 

Charitable Contributions Committee seeks opportunities to support charitable 

organizations operating in the communities in which we work and operate 

through contributions and volunteer work. 

Volunteers for Habitat for Humanity

DENBURY RESOURCES INC.BOARD	OF	DIRECTORS

Seated	(left	to	right):  Gregory L. McMichael    Phil Rykhoek    Michael L. Beatty    Wieland F. Wettstein         

Row	2	(left	to	right): 

 Kevin O. Meyers    Randy Stein    Laura A. Sugg    Michael B. Decker    Ronald G. Greene                         

Wieland	F.	Wettstein
Chairman of the Board 
President  
Finex Financial Corporation, Ltd. 
Calgary, Alberta

Michael	L.	Beatty
Chairman and Chief Executive 
Officer 
Beatty & Wozniak, P.C. 
Denver, Colorado

Michael	B.	Decker
Principal  
Wingate Partners 
Dallas, Texas

Ronald	G.	Greene
Principal  
Tortuga Investment Corp. 
Calgary, Alberta

Gregory	L.	McMichael
Independent Consultant 
Denver, Colorado

kevin	O.	Meyers
Independent Consultant 
Houston, Texas

Phil	Rykhoek
Director, President and  
Chief Executive Officer 
Denbury Resources Inc. 
Plano, Texas

Randy	Stein
Independent Consultant 
Denver, Colorado

Laura	A.	Sugg
Independent Consultant 
Katy, Texas

Our corporate governance guidelines, as well as the charters for our nominating/governance committee, reserves and HSE committee, 
compensation committee and audit committee, are listed on the Company website at www.denbury.com. The website also contains other 
corporate governance information such as our code of ethics for our directors, officers and employees; our hotline number to report any 
abnormalities; and other data. 

You may contact our board members by addressing a letter to Denbury Resources Inc., Attn: Corporate Secretary, or by email to  
secretary@denbury.com.

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28

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OFFICERS

Phil	Rykhoek
Director, President 
and Chief Executive 
Officer

Mark	C.	Allen
Senior Vice President, 
Chief Financial Officer, 
Treasurer and Assistant 
Secretary

k.	Craig	McPherson
Senior Vice President 
and Chief Operating 
Officer 

Robert	L.	Cornelius
Senior Vice President — 
Commercial Development, 
Government Affairs and 
Project Management 

Charlie	Gibson
Senior Vice President —  
Planning, Technology 
and CO2 Supply 

James	S.	Matthews
Vice President, General 
Counsel and Secretary 

Dan	E.	Cole
Vice President — 
Marketing and 
Business Development 

Matt	Elmer
Vice President —  
West Region

John	E.	Filiatrault
Vice President —  
CO2 Supply and  
Pipeline

Jeff	Marcel
Vice President — 
Drilling and EOR 
Facilities Engineering/
Construction

Steve	A.	McLaurin
Vice President and 
Chief Information 
Officer

Alan	Rhoades
Vice President and 
Chief Accounting 
Officer

Barry	Schneider
Vice President —  
North Region

Whitney	Shelley
Vice President and 
Chief Human Resources 
Officer

Phil	Webb
Vice President —  
East Region

 
 
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

2012 FORM 10-K
(Mark One)
   3   Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the fiscal year ended December 31, 2012

OR
       Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from _______________________ to _______________________

Commission file number 1-12935

DENBURY RESOURCES INC.
(Exact name of Registrant as specified in its charter)

Delaware 
(State or other jurisdiction of incorporation or organization) 

20-0467835 
(I.R.S. Employer Identification No.) 

5320 Legacy Drive, Plano, TX   
(Address of principal executive offices) 

75024
(Zip Code) 

Registrant’s telephone number, including area code:  (972) 673-2000

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class: 

Common Stock $.001 Par Value 

Name of Each Exchange on Which Registered: 

New York Stock Exchange 

Securities registered pursuant to Section 12(b) of the Act:  None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  
Yes   3    No         

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. 
Yes         No   3    

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities 
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such 
reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes   3    No           

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every 
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months 
(or for such shorter period that the registrant was required to submit and post such files).  Yes   3    No          

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not 
be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in 
Part III of this Form 10-K or any amendment to this Form 10-K.          

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a small 
reporting company. See definition of “large accelerated filer”, “accelerated filer”, and “small reporting company” in Rule 12-b2 of 
the Exchange Act.  
Large accelerated filer   3     Accelerated filer          Non-accelerated filer          Smaller reporting company             

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).  
Yes         No   3    

The aggregate market value of the registrant’s common stock held by non-affiliates, based on the closing price of the 
registrant’s common stock as of the last business day of the registrant’s most recently completed second fiscal quarter was 
$5,050,462,439.

The number of shares outstanding of the registrant’s Common Stock as of January 31, 2013, was 373,462,597.

DOCUMENTS INCORPORATED BY REFERENCE

Document: 

1. Notice and Proxy Statement for the Annual Meeting 
  of Shareholders to be held May 22, 2013.

Incorporated as to:    

1. Part III, Items 10, 11, 12, 13, 14

 
 
 
 
 
 
 
Table of Contents

	Glossary	and	Selected	Abbreviations	.........................................................................................................................................	

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PART I

Item	1.	

	Business	and	Properties	...................................................................................................................................................................	

Item	1A.	

	Risk	Factors	............................................................................................................................................................................................	

Item	1B.	

	Unresolved	Staff	Comments	...........................................................................................................................................................	

Item	2.	

	Properties	................................................................................................................................................................................................	

Item	3.	

	Legal	Proceedings	................................................................................................................................................................................	

Item	4.	

	Mine	Safety	Disclosures	....................................................................................................................................................................	

PART II

Item	5.	

	Market	for	Registrant’s	Common	Equity,	Related	Stockholder	Matters	and	Issuer		

Purchases	of	Equity	Securities	.......................................................................................................................................................	

Item	6.	

	Selected	Financial	Data	....................................................................................................................................................................	

Item	7.	

	Management’s	Discussion	and	Analysis	of	Financial	Condition	and	Results	of	Operations	............................ 	

Item	7A.	

	Quantitative	and	Qualitative	Disclosures	About	Market	Risk	........................................................................................	

Item	8.	

	Financial	Statements	and	Supplementary	Data	...................................................................................................................	

Item	9.	

	Changes	in	and	Disagreements	with	Accountants	on	Accounting	and	Financial	Disclosure	...........................	

Item	9A.	

	Controls	and	Procedures	..................................................................................................................................................................	

Item	9B.	

	Other	Information	................................................................................................................................................................................	

PART III

Item	10.	

	Directors,	Executive	Officers	and	Corporate	Governance	.................................................................................................	

Item	11.	

	Executive	Compensation	..................................................................................................................................................................	

Item	12.	

	Security	Ownership	of	Certain	Beneficial	Owners	and	Management	and	Related	Stockholder	Matters	...	

Item	13.	

	Certain	Relationships	and	Related	Transactions,	and	Director	Independence	......................................................	

Item	14.	

	Principal	Accountant	Fees	and	Services	....................................................................................................................................	

PART IV

Item	15.	

	Exhibits	and	Financial	Statement	Schedules	..........................................................................................................................	

	Signatures	...............................................................................................................................................................................................	

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Glossary and Selected Abbreviations

Bbl	

Bbls/d	

Bcf	

Bcfe	

BOE	

BOE/d	

Btu	

CO2	

EOR	

One	stock	tank	barrel,	of	42	U.S.	gallons	liquid	volume,	used	herein	in	reference	to	crude	oil	or	
other	liquid	hydrocarbons.

Barrels	of	oil	produced	per	day.

One	billion	cubic	feet	of	natural	gas,	CO2	or	helium.

One	billion	cubic	feet	of	natural	gas	equivalent,	using	the	ratio	of	one	barrel	of	crude	oil,	
condensate	or	natural	gas	liquids	to	6	Mcf	of	natural	gas.

One	barrel	of	oil	equivalent,	using	the	ratio	of	one	barrel	of	crude	oil,	condensate	or	natural	gas	
liquids	to	6	Mcf	of	natural	gas.

BOEs	produced	per	day.

British	thermal	unit,	which	is	the	heat	required	to	raise	the	temperature	of	a	one-pound	mass	of	
water	from	58.5	to	59.5	degrees	Fahrenheit.

Carbon	dioxide.

Enhanced	oil	recovery.

Finding	and	Development	Costs	 The	 average	 cost	 per	 BOE	 to	 find	 and	 develop	 proved	 reserves	 during	 a	 given	 period.	 It	 is	

calculated	 by	 dividing	 costs,	 which	 includes	 the	 total	 acquisition,	 exploration	 and	
development	 costs	incurred	during	the	period	plus	future	development	and	abandonment	costs	
related	 to	 the	 specified	 property	 or	 group	 of	 properties,	 by	 the	 sum	 of	 (i)	 the	 change	 in	 	
total	 proved	reserves	during	the	period	plus	(ii)	total	production	during	that	period.

One	thousand	barrels	of	crude	oil	or	other	liquid	hydrocarbons.

One	thousand	BOEs.

One	thousand	Btus.

One	thousand	cubic	feet	of	natural	gas,	CO2	or	helium	at	a	temperature	base	of	60	degrees	
Fahrenheit	(°F)	and	at	the	legal	pressure	base	(14.65	to	15.025	pounds	per	square	inch	absolute)	
of	the	state	or	area	in	which	the	reserves	are	located	or	sales	are	made.

One	thousand	cubic	feet	of	natural	gas,	CO2	or	helium	produced	per	day.

One	million	barrels	of	crude	oil	or	other	liquid	hydrocarbons.

One	million	BOEs.

One	million	Btus.

One	million	cubic	feet	of	natural	gas,	CO2	or	helium.

One	million	cubic	feet	of	natural	gas,	CO2	or	helium	per	day.

MBbls	

MBOE	

Mbtu	

Mcf	

Mcf/d	

MMBbls	

MMBOE	

MMBtu	

MMcf	

MMcf/d	

Probable	Reserves*	

Are	those	additional	reserves	that	are	less	certain	to	be	recovered	than	proved	reserves	but	
which,	together	with	proved	reserves,	are	as	likely	as	not	to	be	recovered.

Proved	Developed	Reserves*	

Reserves	that	can	be	expected	to	be	recovered	through	existing	wells	with	existing	equipment	
and	operating	methods.

Proved	Reserves*	

The	estimated	quantities	of	reserves	that	geological	and	engineering	data	demonstrate	with	
reasonable	 certainty	 to	 be	 recoverable	 in	 future	 years	 from	 known	 reservoirs	 under	 existing	
economic	and	operating	conditions.

Proved	Undeveloped	Reserves*	 Reserves	that	are	expected	to	be	recovered	from	new	wells	on	undrilled	acreage	or	from	existing	

wells	where	a	relatively	major	expenditure	is	required.

PV-10	 Value	

When	 used	 with	 respect	 to	 oil	 and	 natural	 gas	 reserves,	 PV-10	 Value	 means	 the	 estimated	
future	 gross	 revenue	 to	 be	 generated	 from	 the	 production	 of	 proved	 reserves,	 net	 of	 estimated	
future	production,	development	and	abandonment	costs,	and	before	income	taxes,	discounted	
to	a	present	value	using	an	annual	discount	rate	of	10%.	PV-10	Values	were	prepared	using	
average	 hydrocarbon	 prices	 equal	 to	 the	 unweighted	 arithmetic	 average	 of	 hydrocarbon	 prices	
on	the	first	day	of	each	month	within	the	12-month	period	preceding	the	reporting	date.	PV-10	
Value	 is	 a	 non-GAAP	 measure	 and	 its	 use	 is	 further	 discussed	 in	 footnote	 4	 to	 the	 table	 included	
in	Item	1,	Estimated Net Quantities of Proved Oil and Natural Gas Reserves and Present Value  
of Estimated Future Net Revenues – Oil and Natural Gas Reserve Estimates.

Tcf	

One	trillion	cubic	feet	of	natural	gas,	CO2	or	helium.

*	 This	definition	is	an	abbreviated	version	of	the	complete	definition	as	defined	by	the	SEC	in	Rule	4-10(a)	of	Regulation	S-X.	For	the	complete	definition	see:		

http://www.ecfr.gov/cgi-bin/text-idx?c=ecfr&rgn=div5&view=text&node=17:2.0.1.1.8&idno=17.

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Item 1. Business and Properties

GENERAL

Denbury	Resources	Inc.,	a	Delaware	corporation,	is	a	domestic	independent	oil	and	natural	gas	company	with	409.4	
MMBOE	of	estimated	proved	oil	and	natural	gas	reserves	as	of	December	31,	2012,	of	which	80%	is	oil.	Our	primary	focus	is	
on	enhanced	oil	recovery	utilizing	CO2,	and	our	operations	are	focused	in	two	key	operating	areas:	the	Gulf	Coast	region	
and	Rocky	Mountain	region.	We	are	the	largest	combined	oil	and	natural	gas	producer	in	both	Mississippi	and	Montana,	
and	we	own	the	largest	reserves	of	CO2	used	for	tertiary	oil	recovery	east	of	the	Mississippi	River.	Our	goal	is	to	increase	
the	value	of	acquired	properties	through	a	combination	of	exploitation,	drilling	and	proven	engineering	extraction	
practices,	with	the	most	significant	emphasis	relating	to	tertiary	recovery	operations.

As	part	of	our	corporate	strategy,	we	believe	in	the	following	fundamental	principles:

•	

focus	in	specific	regions	where	we	either	have,	or	believe	we	can	create,	a	competitive	advantage	as	a	result	of	our	
ownership	or	use	of	CO2	reserves,	oil	fields	and	CO2	infrastructure;

•	 acquire	properties	where	we	believe	additional	value	can	be	created	through	tertiary	recovery	operations	and	a	

combination	of	other	exploitation,	development,	exploration	and	marketing	techniques;

•	 acquire	properties	that	give	us	a	majority	working	interest	and	operational	control	or	where	we	believe	we	can	

ultimately	obtain	it;

•	 maximize	the	value	of	our	properties	by	increasing	production	and	reserves	while	controlling	cost;	and

•	 maintain	a	highly	competitive	team	of	experienced	and	incentivized	personnel.

Denbury	became	a	Canadian	public	company	in	1992.	In	1999,	we	moved	our	corporate	domicile	from	Canada	to	the	
United	States	as	a	Delaware	corporation	and	have	been	publicly	traded	in	the	United	States	since	1995	and	on	the	New	
York	Stock	Exchange	since	May	1997.

Our	corporate	headquarters	is	located	at	5320	Legacy	Drive,	Plano,	Texas	75024,	and	our	phone	number	is	972-673-2000.	
At	December	31,	2012,	we	had	1,432	employees,	766	of	whom	were	employed	in	field	operations	or	at	our	field	offices.	We	
make	our	annual	report	on	Form	10-K,	quarterly	reports	on	Form	10-Q ,	current	reports	on	Form	8-K,	and	amendments	to	
those	reports,	filed	or	furnished	pursuant	to	section	13(a)	or	15(d)	of	the	Securities	Exchange	Act	of	1934,	available	free	of	
charge	on	or	through	our	Internet	website,	www.denbury.com,	as	soon	as	reasonably	practicable	after	we	electronically	
file	such	material	with,	or	furnish	it	to,	the	SEC.	The	SEC	also	maintains	a	website,	www.sec.gov,	which	contains	reports,	
proxy	and	information	statements	and	other	information	filed	by	Denbury.	Throughout	this	Annual	Report	on	Form	10-K	
(“Form	10-K”)	we	use	the	terms	“Denbury,”	“Company,”	“we,”	“our,”	and	“us”	to	refer	to	Denbury	Resources	Inc.	and,	as	the	
context	may	require,	its	subsidiaries.

2012 BUSINESS DEVELOPMENTS

•	

Increased	our	average	tertiary	oil	production	to	35,206	Bbls/d	in	2012,	a	14%	increase	from	average	tertiary	
production	in	2011	due	to	contributions	from	our	newest	CO2	floods	at	Oyster	Bayou	and	Hastings	fields	and	
expansion	of	our	existing	CO2	floods	at	Tinsley,	Heidelberg	and	Delhi	fields.

•	 Added	estimated	proved	tertiary	reserves	of	69.5	MMBbls,	primarily	including	initial	tertiary	reserve	bookings		

of	42.6	MMBbls	at	Hastings	Field	and	14.1	MMBbls	at	Oyster	Bayou	Field.	The	combined	PV-10	value	of	the	proved	
tertiary	reserves	at	Hastings	and	Oyster	Bayou	fields	at	December	31,	2012	was	$1.7	billion.

•	 Completed	construction	of	the	first	section	of	the	Greencore	pipeline,	our	first	CO2	pipeline	in	the	Rocky	Mountain	
region,	which	is	on	schedule	to	begin	deliveries	of	CO2	from	the	Lost	Cabin	gas	plant	to	our	Bell	Creek	Field	in	
Montana	in	the	first	half	of	2013.

•	 Continued	our	share	repurchase	program,	under	which	we	repurchased	a	total	of	17.0	million	shares	of	Denbury	

common	stock	for	$266.7	million	during	2012,	in	addition	to	14.1	million	shares	of	Denbury	common	stock	repurchased	
in	2011	for	$195.2	million.	As	of	February	21,	2013,	we	had	spent	a	total	of	$521.0	million	to	repurchase	an	aggregate	of	
34.6	million	shares,	or	approximately	8.6%	of	our	outstanding	shares	as	of	September	30,	2011,	at	an	average	cost	of	
$15.05	per	share.

 
 
 
 
 
•	 Completed	or	entered	into	agreements	on	several	strategic	and	tax	efficient	property	transactions	which	not	only	

add	value,	but	as	importantly,	make	us	a	nearly	pure	CO2	EOR	company.	These	asset	transactions,	which	included	
both	acquisitions	and	dispositions,	aggregated	(or	upon	completion	will	aggregate)	over	$4	billion	in	value,	and		
(1)	resulted	in	an	increase	in	our	unproven	potential	reserves,	which	we	believe	provides	us	a	better	opportunity	to	
achieve	a	higher	return	due	to	the	nature	of	the	acquired	properties	compared	to	the	sold	properties,	(2)	nearly	
replaced	the	production	of	the	sold	assets	with	that	from	the	acquired	or	to-be-acquired	assets,	(3)	exchanged	proved	
reserves	with	a	high	proved	undeveloped	component	for	reserves	that	are	nearly	all	proved	developed,	which	
significantly	increases	our	current	free	cash	flow,	(4)	increased	our	Rocky	Mountain	CO2	reserves	by	1.3	Tcf	and	up	to	
115	MMcf/d	of	deliverability,	and	(5)	positioned	us	to	execute	on	our	long-term	strategy	which	we	expect	will	increase	
shareholder	value	for	many	years	to	come.	A	summary	of	these	transactions	follows,	with	more	detail	on	each	
significant	transaction	discussed	further	below:

•	 Bakken	Exchange	Transaction	–  Divested	our	Bakken	area	assets,	which	were	all	non-tertiary,	at	an	estimated	

value	of	approximately	$2.0	billion,	in	exchange	for	interests	in	two	future	potential	tertiary	oil	fields,	a	new	Rocky	
Mountain	region	CO2	source	and	$1.3	billion	of	cash.

•	 Pending	Cedar	Creek	Anticline	Acquisition	–	Entered	into	an	agreement	in	early	2013	to	purchase	additional	

interests	in	the	Cedar	Creek	Anticline	(“CCA”)	in	Montana	and	North	Dakota	(the	“Pending	CCA	Acquisition”),	an	
area	with	future	potential	tertiary	oil	upside,	for	$1.05	billion,	which	will	be	funded	with	a	portion	of	the	cash	
proceeds	from	the	Bakken	Exchange	Transaction.	We	expect	to	complete	the	Pending	CCA	Acquisition	near	the	end	
of	the	first	quarter	of	2013.

In	two	separate	transactions	earlier	in	2012,	which	were	also	structured	as	like-kind	exchanges	for	federal	income	tax	

purposes,	we	completed	the	following:

•	 Acquisition	of	Thompson	Field	–	Acquired	a	nearly	100%	working	interest	and	84.7%	net	revenue	interest	in	the	
Thompson	Field	in	south	Texas,	a	future	potential	tertiary	oil	field	approximately	18	miles	from	our	current	EOR	
flood	at	Hastings	Field,	for	$366.2	million.

•	 Sale	of	Non-core	Assets	–	Sold	our	interests	in	non-core	oil	and	natural	gas	fields	in	the	Paradox	Basin	of	Utah	and	

in	the	Gulf	Coast	region	for	$68.5	million	and	$141.8	million,	respectively.

Bakken  Exchange  Transaction.  In	late	2012,	we	closed	a	sale	and	exchange	transaction	with	Exxon	Mobil	Corporation	

and	its	wholly-owned	subsidiary	XTO	Energy	Inc.	(collectively,	“ExxonMobil”)	under	which	we	sold	to	ExxonMobil	our	
Bakken	area	assets	in	North	Dakota	and	Montana	in	exchange	for	$1.3	billion	in	cash	(after	preliminary	closing	adjustments)	
and	EOR	assets	(the	“Bakken	Exchange	Transaction”).	By	exchanging	these	non-tertiary	Bakken	area	assets	for	EOR	
assets,	we	are	able	to	more	purely	focus	our	attention	on	tertiary	recovery	operations.

The	Bakken	area	assets	we	sold	had	proved	reserves	of	approximately	109	MMBOE	at	the	time	of	sale,	of	which	66%	was	

undeveloped,	and	2012	production	through	the	third	quarter	of	15,850	BOE/d.	The	EOR	assets	acquired	in	the	Bakken	
Exchange	Transaction	include:	(1)	Webster	Field,	a	planned	future	tertiary	field,	located	in	southeastern	Texas,	with	nearly	
100%	working	interest	and	80%	net	revenue	interest,	proved	reserves	of	3.7	MMBOE	and	production	of	approximately		
1,000	BOE/d;	(2)	Hartzog	Draw	Field,	a	planned	future	tertiary	field	located	in	Wyoming,	consisting	of	an	83%	working	
interest	and	71%	net	revenue	interest	in	the	oil-producing	Shannon	Sandstone	zone	and	a	67%	working	interest	and	53%	
net	revenue	interest	in	the	natural	gas-producing	Big	George	Coal	zone,	with	proved	reserves	of	5.2	MMBOE	and	production	
of	approximately	2,600	BOE/d;	and	(3)	approximately	a	one-third	overriding	royalty	ownership	interest	in	ExxonMobil’s		
CO2	reserves	in	LaBarge	Field	in	Wyoming	with	proved	reserves	of	1.3	Tcf	and	estimated	deliverability	of	up	to	115	MMcf/d.

Pending  CCA  Acquisition.  In	January	2013,	we	entered	into	an	agreement	to	acquire	producing	assets	in	the	CCA	of	

Montana	and	North	Dakota	from	a	wholly-owned	subsidiary	of	ConocoPhillips	for	$1.05	billion	in	cash,	before	standard	
closing	adjustments	primarily	for	revenues	and	costs	of	the	properties	to	be	purchased	from	the	January	1,	2013	effective	
date	to	the	closing	date.	We	plan	to	fund	the	acquisition	with	a	portion	of	the	cash	proceeds	from	the	Bakken	Exchange	
Transaction	in	order	to	qualify	the	acquisition	for	like-kind-exchange	treatment	under	federal	income	tax	rules.	We	expect	
the	Pending	CCA	Acquisition	to	close	near	the	end	of	the	first	quarter	of	2013.

The	assets	we	plan	to	purchase	from	ConocoPhillips	include	both	additional	interests	in	certain	of	our	existing	operated	

fields	in	CCA	as	well	as	operating	interests	in	other	CCA	fields.	We	currently	estimate	on	a	preliminary	basis	that,	as	of	
December	31,	2012,	the	proved	conventional	(non-tertiary)	reserves	associated	with	the	acquired	assets,	net	to	our	acquired	
interests,	were	approximately	42	MMBOE,	of	which	approximately	99%	is	oil	and	natural	gas	liquids,	with	average	daily	

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production	of	approximately	11,000	BOE/d	during	the	fourth	quarter	of	2012.	We	plan	to	incorporate	the	newly	acquired	
CCA	assets	into	our	CO2	development	plan	that	is	currently	being	designed	and	to	extend	the	Greencore	pipeline	north	and	
southwest	in	order	to	deliver	the	CO2	necessary	to	flood	the	CCA	assets.

Acquisition  of  Thompson  Field.  In	June	2012,	we	acquired	a	nearly	100%	working	interest	and	84.7%	net	revenue	

interest	in	Thompson	Field	for	$366.2	million	after	preliminary	closing	adjustments.	The	field	is	located	approximately	18	miles	
west	of	our	Hastings	Field,	which	we	are	currently	flooding	with	CO2,	and	which	is	the	current	terminus	of	the	Green	
Pipeline	which	transports	CO2	from	natural	sources	in	the	Jackson	Dome	area	of	Mississippi.	Thompson	Field	is	similar	to	
Hastings	Field,	producing	oil	from	the	Frio	zone	at	similar	depths,	and	is	a	planned	future	tertiary	field.

Sale  of  Non-Core  Assets.  On	April	9,	2012,	we	completed	the	sale	of	certain	non-operated	assets	in	the	Paradox	Basin	

of	Utah	for	$68.5	million	cash	after	final	closing	adjustments.	On	February	29,	2012,	we	completed	the	sale	of	certain	
non-core	assets	primarily	located	in	central	and	southern	Mississippi	and	in	southern	Louisiana	for	$141.8	million,	after	
final	closing	adjustments.	We	structured	the	sale	of	our	non-core	assets	and	the	purchase	of	Thompson	Field	as	a	like-kind-
exchange	transaction	for	federal	income	tax	purposes	and	anticipate	deferral	of	a	majority	of	the	taxable	gain	recognized	
on	the	sale	of	the	non-core	assets.

2010 ENCORE ACQUISITION AND RELATED DISPOSITIONS

On	March	9,	2010,	we	acquired	Encore	Acquisition	Company	(“Encore”)	pursuant	to	an	Agreement	and	Plan	of	Merger	(the	

“Encore	Merger	Agreement”)	in	a	stock	and	cash	transaction	valued	at	approximately	$4.8	billion	at	the	acquisition	date,	
including	the	assumption	of	Encore	debt	and	the	value	of	the	non-controlling	interest	in	Encore	Energy	Partners	LP	(“ENP”).	
Under	the	Encore	Merger	Agreement,	Encore	was	merged	with	and	into	Denbury	(the	“Encore	Merger”),	with	Denbury	
surviving	the	Encore	Merger.	Pursuant	to	our	stated	intent,	at	the	time	of	acquisition,	to	divest	certain	non-strategic	legacy	
Encore	properties,	certain	oil	and	gas	properties	in	the	Permian	Basin,	Mid-continent	area	and	East	Texas	Basin	were	sold	
in	May	2010.	We	subsequently	divested	our	production	and	acreage	in	the	Cleveland	Sand	Play	and	Haynesville	Play	during	
2010	as	well.	In	addition	to	the	property	sales,	we	sold	our	ownership	interests	in	ENP	on	December	31,	2010.	Collectively,	
we	received	approximately	$1.5	billion	in	total	consideration	from	these	divestitures	in	2010,	excluding	the	bank	debt	of	
ENP	that	was	assumed	by	the	purchaser	in	the	sale.	In	2012,	we	exchanged	the	Bakken	area	assets	acquired	in	the	Encore	
Merger	for	cash	and	other	assets	with	an	estimated	value	of	approximately	$2.0	billion	(see	2012 Business Developments – 
Bakken Exchange Transaction	above).

OIL AND NATURAL GAS OPERATIONS

Summary.  Our	oil	and	natural	gas	properties	are	concentrated	in	the	Gulf	Coast	and	Rocky	Mountain	regions	of	the	

United	States.	Currently	our	properties	with	proved	and	producing	reserves	in	the	Gulf	Coast	region	are	situated	in	
Mississippi,	Texas,	Louisiana	and	Alabama,	and	in	the	Rocky	Mountain	region	in	Montana,	North	Dakota	and	Wyoming.	Our	
primary	focus	is	using	CO2	in	EOR,	which	we	have	been	doing	since	we	acquired	Little	Creek	Field	in	the	Gulf	Coast	region	in	
1999.	EOR,	which	we	also	refer	to	as	“tertiary	recovery”	(as	opposed	to	primary	and	secondary	recovery),	is	a	term	used	to	
represent	techniques	for	extracting	incremental	oil	out	of	existing	oil	fields.	We	acquired	Encore	during	2010	with	the	intent	
to	employ	our	tertiary	recovery	strategy	using	CO2	in	the	Rocky	Mountain	region.	Our	current	portfolio	of	properties	
provides	us	significant	growth	potential	for	more	than	a	decade.

Our	Gulf	Coast	EOR	operations	are	driven	by	CO2	produced	from	natural	sources	in	the	Jackson	Dome	area	of	Mississippi,	
which	is	transported	to	our	Gulf	Coast	tertiary	fields.	In	late	2012,	we	received	first	deliveries	of	anthropogenic	(man-made)	
CO2	into	the	Gulf	Coast	pipeline	system	from	an	industrial	facility	in	Port	Arthur,	Texas.	The	CO2	for	our	Rocky	Mountain	
EOR	operations	will	initially	be	supplied	from	the	Lost	Cabin	gas	plant	in	Wyoming	and	from	an	overriding	royalty	interest	
equivalent	to	an	approximate	one-third	ownership	interest	in	ExxonMobil’s	CO2	reserves	in	LaBarge	Field,	which	overriding	
royalty	interest	we	acquired	during	2012	in	the	Bakken	Exchange	Transaction.	In	the	future,	we	intend	to	utilize	CO2	from	
our	Riley	Ridge	CO2	source.	In	2012,	we	completed	the	initial	232-mile	segment	of	the	20-inch	Greencore	Pipeline,	which	will	
serve	as	part	of	the	planned	CO2	trunk	line	in	the	region.	Although	our	development	of	tertiary	fields,	CO2	sources	and	
pipelines	in	the	Rocky	Mountain	region	is	just	beginning,	we	believe	that	our	significant	CO2	sources	and	planned	pipeline	
infrastructure	in	the	area	will	allow	us	to	utilize	CO2	injection	to	potentially	recover	significant	amounts	of	incremental	oil	
from	mature	oil	fields.	Each	of	our	significant	development	areas	and	planned	activities	is	discussed	in	more	detail	below.

 
 
 
 
 
The	following	table	provides	a	summary	by	field	and	region	of	selected	proved	oil	and	natural	gas	reserve	information,	
including	total	proved	reserve	quantities	and	the	associated	PV-10	Value	of	those	reserves	as	of	December	31,	2012,	and	
average	daily	production	and	net	revenue	interest	(“NRI”)	for	2012.	The	reserve	estimates	for	all	years	presented	were	
prepared	by	DeGolyer	and	MacNaughton,	independent	petroleum	engineers	located	in	Dallas,	Texas.	We	serve	as	operator	
of	virtually	all	of	our	significant	properties,	in	which	we	also	own	most	of	the	interests,	although	typically	less	than	a	100%	
working	interest,	and	a	lesser	net	revenue	interest	due	to	royalties	and	other	burdens.	For	additional	reserve	information,	see	
Estimated Net Quantities of Proved Oil and Natural Gas Reserves and Present Value of Estimated Future Net Revenues	below.

Proved Reserves as of December 31, 2012(1) 

2012 Average
Daily Production 

Oil 
(MBbls) 

Natural Gas 
(MMcf) 

BOE   PV-10 Value(2) 

MBOEs  % of total 

(000’s) 

Oil 
(Bbls/d) 

Natural Gas  Average
(Mcf/d)  2012 NRI

Tertiary oil properties
Gulf Coast region
  Mature properties:
  Brookhaven 
  Eucutta 
  Mallalieu 
  Other mature properties	(3) 

  Delhi 
  Hastings   
  Heidelberg 
  Oyster Bayou 
  Tinsley 

  Total tertiary oil properties 

10,938 
9,251 
6,450 
27,343 
25,038 
45,261 
34,599 
13,602 
28,430 
200,912 

Non-tertiary oil and gas properties
Gulf Coast region
  Mississippi 
  Texas   
  Other   

  Total Gulf Coast region 

Rocky Mountain region
  Cedar Creek Anticline	(4) 
  Riley Ridge	(5) 
  Other   

  Total Rocky Mountain region  
  Total continuing properties 

Properties disposed in 2012
  Bakken area assets 
  Gulf Coast assets 
  Paradox assets 

  Total 

Company total 

6,408 
33,694 
7,070 
47,172 

66,792 
2 
14,246 
81,040 
329,124 

— 
— 
— 
— 
329,124 

— 
— 
— 
— 
— 
— 
— 
— 
— 
— 

28,165 
17,861 
1,599 
47,625 

425 
416,281 
17,310 
434,016 
481,641 

— 
— 
— 
— 
481,641 

10,938 
9,251 
6,450 
27,343 
25,038 
45,261 
34,599 
13,602 
28,430 
200,912 

2.7% 
2.3% 
1.6% 
6.6% 
6.1% 
  11.1% 
8.5% 
3.3% 
6.9% 
  49.1% 

11,102 
36,671 
7,337 
55,110 

2.7% 
9.0% 
1.8% 
  13.5% 

66,863 
69,382 
17,131 
153,376 
409,398 

— 
— 
— 
— 
409,398 

  16.3% 
  16.9% 
4.2% 
  37.4% 
  100.0% 

  — 
  — 
  — 
  — 
  100.0% 

467,653 
356,000 
222,586 
865,308 
989,608 
1,179,241 
1,156,508 
496,501 
1,085,180 
6,818,585 

260,235 
1,035,953 
180,805 
1,476,993 

1,267,881 
22 
346,111 
1,614,014 
9,909,592 

— 
— 
— 
— 
9,909,592 

2,692 
2,868 
2,338 
7,707 
4,315 
2,188 
3,763 
1,388 
7,947 
  35,206 

1,985 
4,157 
1,087 
7,229 

8,442 
— 
2,990 
  11,432 
  53,867 

  12,539 
246 
185 
  12,970 
  66,837 

— 
— 
— 
— 
— 
— 
— 
— 
— 
— 

11,662 
3,477 
902 
16,041 

371 
96 
1,335 
1,802 
17,843 

11,140
99
27
11,266
29,109

81.2%
83.6%
78.0%
73.3%
76.1%
82.7%
82.9%
87.0%
80.6%
78.9%

40.4%
80.0%
22.0%
47.3%

65.8%
54.8%
34.9%
53.9%
67.0%

(1)	 The	reserves	were	prepared	in	accordance	with	Financial	Accounting	Standards	Board	Codification	(“FASC”)	Topic	932,	Extractive Industries – Oil and Gas,	

using	the	average	first-day-of-the-month	prices	for	each	month	during	2012,	which	for	NYMEX	oil	was	$94.71	per	Bbl,	adjusted	to	prices	received	by	field,	and	
for	natural	gas	was	a	Henry	Hub	cash	price	of	$2.85	per	MMBtu,	also	adjusted	to	prices	received	by	field.

(2)	 PV-10	Value	is	a	non-GAAP	measure	and	is	different	from	the	Standardized	Measure	of	Discounted	Future	Net	Cash	Flows	(“Standardized	Measure”)	in	that	
PV-10	Value	is	a	pre-tax	number	and	the	Standardized	Measure	is	an	after-tax	number.	The	Standardized	Measure	was	$6.4	billion	at	December	31,	2012.	A	
comparison	of	PV-10	Value	to	the	Standardized	Measure	is	included	in	the	reserves	table	in	Estimated Net Quantities of Proved Oil and Natural Gas Reserves 
and Present Value of Estimated Future Net Revenues	below.	The	information	used	to	calculate	PV-10	Value	is	derived	directly	from	data	determined	in	
accordance	with	FASC	Topic	932.	See	the	definition	of	PV-10	Value	in	the	Glossary and Selected Abbreviations.

(3)	 Other	mature	properties	include	Cranfield,	Little	Creek,	Lockhart	Crossing,	Martinville,	McComb	and	Soso	fields.

(4)	 The	Cedar	Creek	Anticline	consists	of	a	series	of	10	producing	oil	units,	each	of	which	could	be	considered	a	field	by	itself.	CCA	reserves	at	December	31,	2012	do	

not	include	42	MMBOE	of	currently	estimated	proved	reserves	we	plan	to	acquire	during	the	first	quarter	of	2013	through	the	Pending	CCA	Acquisition	
discussed	above.	See	2012	Business Developments – Pending CCA Acquisition.

(5)	 While	the	Riley	Ridge	Field	reserves	make	up	over	15%	of	the	Company’s	total	reserves,	production	from	the	field	is	currently	negligible.	We	expect	production	

to	increase	with	the	startup	of	the	Riley	Ridge	gas	plant	in	mid-2013.

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Enhanced  Oil  Recovery  Overview.  CO2	used	in	EOR	is	one	of	the	most	efficient	tertiary	recovery	mechanisms	for	

producing	crude	oil.	The	CO2	acts	somewhat	like	a	solvent,	mixing	with	the	oil	and	ultimately	freeing	the	oil	from	the	
formation	as	the	CO2	passes	through	reservoir	rock.	CO2	tertiary	floods	are	unique	in	that	they	require	large	volumes	of	
CO2.	To	our	knowledge,	the	location	of	large	quantities	of	naturally	occurring	CO2	in	the	United	States	is	limited	to	a	few	
geological	basins.

While	enhanced	oil	recovery	projects	utilizing	CO2	may	not	be	considered	a	new	technology,	we	apply	several	concepts	
we	have	learned	over	the	years	to	fields	to	improve	and	increase	sweep	efficiency	within	the	reservoirs,	which	include:	(1)	well	
evaluation	and	monitoring	methods,	(2)	CO2	injection	conformance,	(3)	new	completion	techniques,	(4)	varied	operating	
equipment	and	operating	conditions,	and	(5)	application	of	intense	reservoir	management	and	production	techniques.	We	
began	our	CO2	operations	in	August	1999,	when	we	acquired	Little	Creek	Field,	followed	by	our	acquisition	of	Jackson	Dome	
CO2	reserves	and	the	NEJD	pipeline	in	2001.	Based	upon	our	success	at	Little	Creek	and	the	ownership	of	the	CO2	reserves,	
we	began	to	transition	our	capital	spending	and	acquisition	efforts	to	focus	a	greater	percentage	on	CO2	EOR	and,	over	
time,	transformed	our	strategy	to	focus	primarily,	and	then	almost	exclusively,	on	CO2	EOR	projects.	With	the	sale	of	our	
Bakken	area	assets	in	late	2012,	our	asset	base	today	almost	entirely	relates	to	current	or	planned	tertiary	oil	operations.	
We	believe	our	investments,	experience	and	acquired	knowledge	give	us	a	strategic	and	competitive	advantage	in	the	
areas	in	which	we	operate.

Our	tertiary	operations	have	grown	so	that	(1)	49%	of	our	proved	reserves	at	December	31,	2012	are	proved	tertiary	oil	

reserves;	(2)	approximately	54%	of	our	forecasted	2013	production	is	expected	to	come	from	tertiary	oil	operations	(on	a	
BOE	basis);	and	(3)	approximately	85%	of	our	2013	planned	capital	expenditures	are	related	to	our	tertiary	oil	operations.	
At	year-end	2012,	the	proved	oil	reserves	in	our	tertiary	recovery	oil	fields	had	an	estimated	PV-10	Value	of	approximately	
$6.8	billion,	using	12-month	first-day-of-the-month	unweighted	average	NYMEX	pricing	during	calendar	2012	of	$94.71	per	
Bbl.	In	addition,	there	are	significant	probable	and	possible	reserves	at	several	other	fields	for	which	tertiary	operations	
are	under	way	or	planned.	Although	the	up-front	cost	of	infrastructure	and	time	to	construct	such	is	greater	than	in	
conventional	oil	recovery,	we	believe	tertiary	recovery	has	several	favorable,	offsetting	and	unique	attributes	including:	
(1)	it	has	a	lower	risk,	as	we	are	operating	oil	fields	that	have	significant	historical	production	and	reservoir	and	geological	
data,	(2)	our	investments	provide	a	reasonable	rate	of	return	at	relatively	low	oil	prices	(we	estimate	our	economic	break-
even	point	on	a	per-barrel	basis	before	corporate-related	overhead	and	expenses	on	our	Gulf	Coast	projects	at	current	oil	
prices	is	in	the	$40-per-barrel	range,	depending	on	the	specific	field	and	area),	(3)	we	have	limited	competition	for	this	type	
of	activity	in	our	geographic	regions,	and	(4)	our	EOR	activities	could	be	considered	more	eco-friendly	than	other	current	oil	
and	gas	development,	as	we	develop	existing	oil	fields	thereby	not	disturbing	new	habitats,	drill	fewer	new	wellbores,	do	
not	utilize	hydraulic	fracturing	in	our	oil	and	natural	gas	development	operations,	and	have	the	ability	to	geologically	store	
CO2	captured	from	industrial	facilities.

We	have	been	conducting	and	expanding	EOR	operations	on	our	assets	in	the	Gulf	Coast	region	since	1999,	and	as	a	
result,	they	are	more	developed	from	an	EOR	perspective	than	our	assets	in	the	Rocky	Mountain	region.	In	the	Gulf	Coast	
region,	we	own	what	is,	to	our	knowledge,	the	only	significant	naturally	occurring	source	of	CO2,	and	these	large	volumes	of	
CO2	have	allowed	us	to	significantly	grow	our	production	in	that	region.	In	addition	to	the	sources	of	CO2	we	currently	own,	
we	are	pursuing	anthropogenic	(man-made)	sources	of	CO2	to	use	in	our	tertiary	operations,	which	we	believe	will	not	only	
help	us	recover	additional	oil,	but	will	also	provide	an	economical	and	eco-friendly	way	to	store	CO2.	We	started	receiving	
our	first	anthropogenic	CO2	in	the	fourth	quarter	of	2012	from	an	industrial	facility	in	Port	Arthur,	Texas	and	expect	the	
amount	of	CO2	we	use	in	our	operations	coming	from	anthropogenic	sources	to	grow	in	the	future.

Through	December	31,	2012,	we	have	invested	a	total	of	$3.0	billion	in	tertiary	fields	in	our	Gulf	Coast	region	(including	
allocated	acquisition	costs	and	amounts	assigned	to	goodwill)	and	have	recovered	all	of	these	costs,	with	excess	net	cash	
flow	(revenue	less	operating	expenses	and	capital	expenditures,	excluding	pipeline-related	capital	expenditures)	of		
$1.1	billion.	Of	this	total	invested	amount,	approximately	$185	million	(6%)	was	spent	on	fields	that	did	not	yet	have	any	
appreciable	proved	reserves	at	December	31,	2012.	The	proved	oil	reserves	in	our	Gulf	Coast	tertiary	oil	fields	have	a	
year-end	2012	PV-10	Value	of	$6.8	billion,	using	the	12-month	first-day-of-the-month	unweighted	average	NYMEX	pricing	
during	calendar	2012	of	$94.71	per	Bbl.	These	amounts	do	not	include	the	capital	costs	or	related	depreciation	and	
amortization	of	our	CO2-producing	properties	or	CO2	pipelines,	but	do	include	CO2	source	field	lease	operating	and	
transportation	costs.	Including	the	Green	Pipeline,	which	currently	services	our	Hastings	and	Oyster	Bayou	fields,	we	have	
invested	a	total	of	$2.0	billion	in	CO2-producing	assets	and	pipelines	in	the	Gulf	Coast	region.

 
 
 
 
 
We	began	operations	in	the	Rocky	Mountain	region	in	March	2010	as	part	of	the	Encore	Merger,	and	as	such,	we	have	
significantly	fewer	oil	fields	and	less	CO2	pipeline	infrastructure	in	that	region,	although	we	are	aggressively	developing	
both.	We	currently	have	four	properties	in	the	Rocky	Mountain	region	that	we	plan	to	flood	with	CO2:	Bell	Creek	Field,	
Grieve	Field,	Hartzog	Draw	Field,	and	Cedar	Creek	Anticline.	The	Cedar	Creek	Anticline	is	a	geological	structure	over	126	miles	
in	length	consisting	of	10	different	operating	units.	We	have	contracted	to	purchase	CO2	from	the	Lost	Cabin	gas	plant	in	
central	Wyoming	and	completed	construction	of	the	first	section	of	the	Greencore	Pipeline	in	late	2012	to	deliver	CO2	from	
such	gas	plant	to	our	Bell	Creek	Field.	We	currently	expect	to	begin	purchasing	CO2	from	the	Lost	Cabin	plant	during	the	
first	quarter	of	2013	and	start	injections	at	Bell	Creek	Field	during	the	second	quarter	of	2013.	Our	Riley	Ridge	acquisitions	
in	2010	and	2011	and	ExxonMobil	CO2	acquisition	in	2012	provide	us	additional	sources	of	CO2	for	our	currently	planned		
and	future	potential	projects	in	the	area.

Tertiary Oil Properties

Gulf Coast Region

CO2  Sources and Pipelines

Jackson  Dome.	Our	primary	Gulf	Coast	CO2	source,	Jackson	Dome,	located	near	Jackson,	Mississippi,	was	discovered	
during	the	1970s	while	being	explored	for	hydrocarbons.	This	significant	and	relatively	pure	source	of	CO2	(98%	CO2)	is,	to	
our	knowledge,	the	only	significant	deposit	of	CO2	in	the	United	States	east	of	the	Mississippi	River,	and	we	believe	that		
it	provides	us	a	significant	strategic	advantage	in	the	acquisition	of	other	properties	in	Mississippi,	Louisiana	and	Texas	
that	could	be	further	exploited	through	tertiary	recovery.

We	acquired	Jackson	Dome	in	February	2001	for	$42	million,	a	purchase	that	also	gave	us	ownership	and	control	of	the	

NEJD	CO2	pipeline.	This	acquisition	provided	the	platform	to	significantly	expand	our	CO2	tertiary	recovery	operations		
by	assuring	that	CO2	would	be	available	to	us	on	a	reliable	basis	and	at	a	reasonable	and	predictable	cost.	Since	February	
2001,	we	have	acquired	and	drilled	numerous	CO2-producing	wells,	significantly	increasing	our	estimated	proved	Gulf	
Coast	CO2	reserves	from	approximately	800	Bcf	at	the	time	of	acquisition	to	approximately	6.1	Tcf	as	of	December	31,	2012.	
The	CO2	reserve	estimates	are	based	on	a	gross	working	interest	of	the	CO2	reserves,	of	which	our	net	revenue	interest		
is	approximately	4.8	Tcf	and	is	included	in	the	evaluation	of	proved	CO2	reserves	prepared	by	our	outside	reserve	engineer,	
DeGolyer	and	MacNaughton.	In	discussing	our	available	CO2	reserves,	we	make	reference	to	the	gross	amount	of		
proved	and	probable	reserves,	as	this	is	the	amount	that	is	available	both	for	our	own	tertiary	recovery	programs	and	for	
industrial	users	who	are	customers	of	Denbury	and	others,	as	we	are	responsible	for	distributing	the	entire	CO2	
production	stream.

In	addition	to	the	proved	reserves,	we	estimate	that	we	have	2.4	Tcf	of	probable	CO2	reserves	at	Jackson	Dome,	and	
significant	other	possible	reserves.	The	majority	of	our	probable	reserves	at	Jackson	Dome	are	located	in	structures	that	
have	been	drilled	and	tested	in	the	area	but	are	not	currently	capable	of	producing	because	(1)	the	original	well	is	plugged;	
(2)	they	are	located	in	fault	blocks	that	are	immediately	adjacent	to	fault	blocks	with	proved	reserves;	(3)	they	are	in	
undrilled	structures	where	we	have	sufficient	subsurface	data,	and	seismic	and	geophysical	attributes	that	provide	a	high	
degree	of	certainty	that	CO2	is	present;	or	(4)	they	are	reserves	associated	with	increasing	the	ultimate	recovery	factor		
from	our	existing	reservoirs	with	proved	reserves.	Our	historically	high	drilling	success	rate,	coupled	with	our	seismic	data	
across	the	undrilled	structures,	provide	us	with	a	reasonably	high	degree	of	certainty	that	additional	CO2	reserves	will		
be	developed.

Although	our	current	proved	CO2	reserves	are	quite	large,	in	order	to	continue	our	tertiary	development	of	oil	fields	in	the	

Gulf	Coast	region,	incremental	deliverability	of	CO2	is	required.	In	order	to	obtain	additional	CO2	deliverability,	we	have	
conducted	several	3D	seismic	surveys	in	the	area	over	the	past	several	years,	and	anticipate	drilling	five	development	wells	
in	2013	that	are	intended	to	increase	productive	capacity,	three	of	which	could	potentially	add	incremental	CO2	reserves.		
In	addition	to	our	drilling	at	Jackson	Dome,	we	continue	to	expand	our	processing	and	dehydration	capacities,	and	we	
continue	to	install	pipelines	and/or	pumping	stations	necessary	to	transport	the	CO2	through	our	controlled	pipeline	network.	
We	expect	our	current	proved	reserves	of	CO2,	coupled	with	a	risked	drilling	program	at	Jackson	Dome	and	expected	
anthropogenic	sources,	to	provide	more	than	enough	CO2	for	our	existing	and	currently	planned	phases	of	operations	in	the	
Gulf	Coast,	including	several	fields	we	own	and	plan	to	flood	that	do	not	have	proven	tertiary	reserves.	Additionally,	in		
the	future,	we	believe	that	once	a	CO2	flood	reaches	its	productive	economic	limit,	we	could	recycle	a	portion	of	the	CO2	that	
remains	in	that	reservoir	and	utilize	it	in	another	tertiary	flood.

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In	addition	to	using	CO2	for	our	Gulf	Coast	tertiary	operations,	we	sell	CO2	to	third-party	industrial	users	under	long-term	

contracts	and	currently	have	three	CO2	volumetric	production	payment	contracts.	Approximately	91%	of	our	average	daily	
CO2	production	in	2012	and	2011	and	87%	in	2010	was	used	in	our	tertiary	recovery	operations	on	our	own	behalf	and	on	
behalf	of	other	working	interest	owners	and	royalty	owners	in	our	enhanced	recovery	fields,	with	the	balance	delivered	to	
third-party	industrial	users.	During	2012,	we	sold	an	average	of	92	MMcf/d	of	CO2	to	commercial	users,	and	we	used	an	
average	of	933	MMcf/d	for	our	tertiary	activities.	We	are	continuing	to	increase	our	CO2	production,	which	averaged	1,100	
MMcf/d	during	the	fourth	quarter	of	2012,	a	7%	increase	over	the	fourth	quarter	of	2011.

Gulf  Coast  Anthropogenic  CO2	  Sources.  In	addition	to	our	natural	source	of	CO2,	we	are	currently	party	to	five	
long-term	contracts	to	purchase	man-made	CO2	from	five	plants	that	either	exist,	are	currently	under	construction,	or	are	
planned,	in	the	Gulf	Coast	region.	In	late	2012,	we	received	first	deliveries	of	anthropogenic	CO2	into	the	Gulf	Coast	pipeline	
system	from	an	industrial	facility	in	Port	Arthur,	Texas,	and	we	anticipate	taking	deliveries	from	another	existing	plant		
in	2013	and	a	plant	currently	under	construction	in	early	2014.	We	estimate	these	three	sources	will	supply	approximately	
200	MMcf/d	of	CO2	to	our	EOR	operations,	although	under	certain	circumstances	they	could	provide	higher	volumes.	If	the	
remaining	two	plants	as	to	which	we	have	long-term	CO2	purchase	contracts	also	were	to	be	built,	we	currently	estimate	
our	anthropogenic	CO2	sources	could	potentially	provide	us	with	aggregate	CO2	volumes	of	up	to	600	MMcf/d.	Construction	
of	these	two	plants	is	considered	probable,	although	is	contingent	on	the	satisfactory	resolution	of	various	matters,	
including	financing.	While	both	of	these	plants	may	not	be	constructed,	other	plants	currently	being	planned	could	provide	
us	additional	anthropogenic	CO2.	We	are	in	ongoing	discussions	with,	and/or	have	entered	into	contractual	arrangements	
to	purchase	CO2	from,	several	of	these	other	potential	sources.

In	addition	to	potential	CO2	sources	discussed	above,	we	continue	to	have	ongoing	discussions	with	owners	of	existing	
plants	of	various	types	that	emit	CO2	that	we	may	be	able	to	purchase	and/or	transport.	In	order	to	capture	such	volumes,	
we	(or	the	plant	owner)	would	need	to	install	additional	equipment,	which	includes,	at	a	minimum,	compression	and	
dehydration	facilities.	Most	of	these	existing	plants	emit	relatively	small	volumes	of	CO2,	generally	less	than	the	proposed	
gasification	plants,	but	such	volumes	may	still	be	attractive	if	the	source	is	located	near	CO2	pipelines.	The	capture	of	CO2	
could	also	be	influenced	by	potential	federal	legislation,	which	could	impose	economic	penalties	for	the	emission	of	CO2.	
We	believe	that	we	are	a	likely	purchaser	of	CO2	captured	in	our	areas	of	operation	because	of	the	scale	of	our	tertiary	
operations,	our	CO2	pipeline	infrastructure	and	our	large	natural	sources	of	CO2,	which	can	act	as	a	swing	CO2	source	to	
balance	CO2	supply	and	demand.

Gulf  Coast  CO2  Pipelines.  We	acquired	the	183-mile	NEJD	CO2	pipeline	that	runs	from	Jackson	Dome	to	near	

Donaldsonville,	Louisiana,	as	part	of	the	2001	acquisition	of	our	Jackson	Dome	source.	Since	2001	we	have	acquired	or	
constructed	nearly	750	miles	of	CO2	pipelines,	which	give	us	the	ability	to	deliver	CO2	throughout	the	Gulf	Coast.	As	of	
December	31,	2012,	we	have	access	to	over	920	miles	of	CO2	pipelines	in	the	Gulf	Coast	region.	In	addition	to	the	NEJD	CO2	
pipeline,	the	major	pipelines	are	the	Free	State	Pipeline	(90	miles),	the	Delta	Pipeline	(110	miles)	and	the	Green	Pipeline	
(325	miles).

Completion	of	the	Green	Pipeline	facilitated	the	first	CO2	injection	into	the	Hastings	Field,	located	near	Houston,	Texas,	

in	late	2010.	The	completion	of	the	Green	Pipeline	gives	us	the	ability	to	deliver	CO2	to	oil	fields	all	along	the	Gulf	Coast	
from	Baton	Rouge,	Louisiana,	to	Alvin,	Texas.	At	the	present	time,	most	of	the	CO2	flowing	in	the	Green	Pipeline	is	delivered	
from	the	Jackson	Dome	area,	but	we	recently	began	receiving	anthropogenic	CO2	from	a	plant	in	Port	Arthur,	Texas,	and	
will	transport	a	third	party’s	CO2	for	a	fee	to	the	sales	point	at	Hastings	Field.	We	expect	the	volume	of	anthropogenic	CO2	
flowing	through	the	Green	Pipeline	to	increase	in	future	years.

Tertiary Properties with Tertiary Production and Tertiary Reserves at December 31, 2012

Mature  properties.  Mature	properties	include	several	fields	along	our	NEJD	CO2	pipeline	and	the	Free	State	pipeline,	

which	run	through	east	Mississippi,	southwest	Mississippi	and	into	Louisiana.	This	grouping	includes	some	of	our	most	
mature	CO2	floods,	including	our	initial	CO2	field,	Little	Creek,	as	well	as	several	other	areas	(Brookhaven,	Cranfield,	
Eucutta,	Lockhart	Crossing,	Mallalieu,	Martinville,	McComb	and	Soso	fields).	These	fields	accounted	for	approximately	44%	
of	our	total	2012	CO2	EOR	production	and	27%	of	our	proved	tertiary	reserves.	These	fields	have	been	producing	for	some	
time,	and	their	production	is	generally	on	decline.	Many	of	these	fields	contain	multiple	reservoirs	that	are	amenable	to	
CO2	EOR.	In	2013,	we	plan	to	invest	approximately	$90	million	in	our	mature	properties.

Most	of	the	development	work	is	complete	in	this	area;	however,	there	are	some	additional	areas	at	McComb,	Cranfield,	

Brookhaven	and	Little	Creek	that	we	currently	plan	to	develop.	EOR	operations	in	Eucutta	and	Martinville	fields	were	

 
 
 
 
 
initiated	in	2006	following	completion	of	the	Free	State	Pipeline,	and	the	fields	are	mostly	developed	in	the	reservoir(s)	
under	flood	at	the	present	time.	In	addition	to	the	developed	reservoirs,	these	fields	have	potential	development	targets	in	
other	vertically	segregated	reservoirs.	As	these	fields	have	matured,	we	have	experimented	with	a	variety	of	techniques	to	
maximize	the	recovery	of	oil	from	these	reservoirs,	gathering	knowledge	that	we	will	utilize	in	all	areas	of	our	EOR	
operations.	All	of	the	techniques	we	are	employing	are	intended	to	improve	the	overall	sweep	efficiency	in	the	formation	
and	hence	to	maximize	production.

Due	to	the	lower	viscosity	of	CO2	when	compared	to	oil,	CO2	will	tend	to	follow	the	path	of	least	resistance.	This	may	
result	in	high	producing	gas-oil	ratios	sooner	than	anticipated.	In	order	to	address	this	issue,	we	have	experimented	with	
various	techniques	such	as	cement	squeezes	(injection	and	producing	wells),	chemical	squeezes,	perforation	design,	
mechanical	isolation	assemblies	and	operating	pressure	controls.	We	have	also	utilized	water-alternating	gas	injections,	
where	water	is	substituted	for	the	CO2	for	a	given	volume	and	then	CO2	is	injected	behind	the	water.	Each	one	of	these	
processes	has	had	some	success	and	we	plan	to	continue	to	utilize	them	in	the	future	as	appropriate.

From	inception	through	December	31,	2012,	we	have	recovered	all	our	costs	relating	to	our	mature	properties,	and		
the	excess	net	cash	flow	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	acquisition	costs)	from	
the	mature	properties	was	$1.7	billion.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	our	mature	properties	was	
$1.9	billion.

Delhi  Field.  Delhi	Field	is	located	southwest	of	Tinsley	Field	and	east	of	Monroe,	Louisiana.	During	May	2006,	we	

purchased	Delhi	for	$50	million,	plus	an	approximate	25%	reversionary	interest	to	the	seller	after	we	achieve	$200	million		
in	net	operating	income.	We	began	well	and	facility	development	in	2008	and	began	delivering	CO2	to	the	field	in	the		
fourth	quarter	of	2009	via	the	Delta	Pipeline,	which	runs	from	Tinsley	Field	to	Delhi	Field.	First	tertiary	production	occurred	
at	Delhi	Field	in	March	2010.	Current	trend	and	performance	data	indicate	that	Delhi	Field	is	acting	as	predicted	and	continues	
to	provide	a	positive	outlook	for	this	field.	Production	from	Delhi	in	the	fourth	quarter	of	2012	averaged	5,237	Bbls/d,		
up	from	3,778	Bbls/d	in	the	year-ago	period.	In	2013,	we	plan	to	invest	approximately	$40	million	to	drill	15	wells	and	
optimize	existing	development	patterns	at	Delhi	Field.	Based	on	our	current	estimates,	we	expect	the	reversionary	interest	
to	come	into	effect	some	time	in	the	latter	part	of	2013,	which	will	reduce	our	net	revenue	interest	in	the	field	at	that	time.

From	inception	through	December	31,	2012,	we	had	not	yet	recovered	our	investment	in	this	field,	and	the	remaining	

investment	to	be	recovered	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	acquisition	costs)	
from	Delhi	Field	was	$122	million.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	Delhi	Field	was	$989.6	million.

Hastings  Field.  Hastings	Field	is	located	just	south	of	Houston,	Texas.	We	acquired	a	majority	interest	in	this	field	in	
February	2009	for	approximately	$247	million.	Due	to	the	large	vertical	oil	column	that	exists	in	the	field,	we	are	developing	
the	Frio	reservoir	using	dedicated	CO2	injection	and	producing	wells	for	each	of	the	major	sand	intervals.	We	initiated	CO2	
injection	in	the	West	Hastings	Unit	during	December	2010	upon	completion	of	the	construction	of	the	Green	Pipeline.	We	
began	producing	oil	from	our	EOR	operations	at	Hastings	Field	in	January	2012,	and	we	booked	proved	tertiary	reserves	of	
42.6	MMBbl	for	the	West	Hastings	Unit	in	2012.	During	the	fourth	quarter	of	2012,	tertiary	production	from	Hastings	Field	
averaged	3,409	Bbls/d,	compared	to	zero	in	the	year-ago	period.	In	2013,	we	plan	to	invest	approximately	$90	million	to	
continue	developing	the	West	Hastings	Unit,	including	the	development	of	additional	patterns	and	expansion	of	the	
processing	facilities.	Significant	additional	capital	expenditures	will	be	required	over	several	years	to	fully	develop	the	field.

From	inception	through	December	31,	2012,	we	had	not	yet	recovered	our	investment	in	this	field,	and	the	remaining	

investment	to	be	recovered	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	acquisition	cost)	from	
Hastings	Field	was	$331	million.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	Hastings	Field	was	$1.2	billion.

Heidelberg  Field.  In	2008,	we	began	CO2	injections	at	Heidelberg	Field,	which	is	located	in	Mississippi	and	consists	of	an	
East	and	West	Unit.	Construction	of	the	CO2	facility,	connecting	pipeline	and	well	work	commenced	on	the	West	Heidelberg	
Unit	during	2008,	with	our	first	CO2	injections	beginning	in	December	2008.	Our	first	tertiary	oil	production	response	
occurred	during	May	2009.	During	2010,	we	added	injection	patterns	and	expanded	the	central	processing	facility.	
Production	from	the	West	Unit	began	to	decline	in	2011	and	we	determined	that	CO2	was	not	reaching	all	the	targeted	
zones,	broadly	described	as	“conformance	issues.”	In	2011,	we	modified	our	development	pattern	to	address	the	
conformance	issues	by	redirecting	CO2	into	previously	unswept	intervals	in	the	West	Heidelberg	Unit,	and	we	believe	this	
work	has	been	successful.	During	the	fourth	quarter	of	2012,	tertiary	production	at	Heidelberg	Field	averaged	3,930	Bbls/d,	
compared	to	3,728	Bbls/d	in	the	year-ago	period.	In	2012,	we	continued	the	development	of	our	East	Heidelberg	Unit,		
which	is	larger	and	contains	more	oil	in	place	than	the	West	Heidelberg	Unit,	by	initiating	the	second	phase	of	the	Eutaw	

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development	and	the	first	phase	of	the	Christmas	development.	In	2013,	we	plan	to	invest	approximately	$100	million	to	
continue	developing	the	East	Heidelberg	Unit,	including	an	expansion	of	our	development	of	the	Eutaw	and	Christmas	
zones,	and	we	plan	to	invest	$20	million	in	the	West	Heidelberg	Unit	to	optimize	our	development	in	the	area.

From	inception	through	December	31,	2012,	we	have	recovered	all	our	costs	relating	to	the	CO2	flood	at	Heidelberg	Field,	

and	the	excess	net	cash	flow	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	acquisition	costs)	
from	the	field	was	$51	million.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	Heidelberg	Field	was	$1.2	billion.

Oyster  Bayou  Field.  Oyster	Bayou	Field,	of	which	we	acquired	a	majority	interest	in	2007,	is	located	in	southeast	Texas	
on	the	east	side	of	Galveston	Bay.	Oyster	Bayou	Field	was	unitized	in	the	spring	of	2010	and	we	began	CO2	injections	there	
in	June	2010.	Oyster	Bayou	Field	is	somewhat	unique	when	compared	to	our	other	CO2	EOR	projects	because	the	field	covers	
a	relatively	small	area	of	3,912	acres	and	was	designed	to	be	developed	in	essentially	one	stage.	We	commenced	
production	from	Oyster	Bayou	Field	in	December	2011	and	booked	initial	proved	tertiary	reserves	for	the	field	of	14.1	MMBbl	
in	2012.	During	the	fourth	quarter	of	2012,	tertiary	production	at	Oyster	Bayou	Field	averaged	1,826	Bbls/d,	compared	to		
18	Bbls/d	in	the	year-ago	period.	In	2013,	we	plan	to	invest	approximately	$5	million	to	increase	our	CO2	injection	and	water	
disposal	capacity	at	Oyster	Bayou	Field.

From	inception	through	December	31,	2012,	we	had	not	yet	recovered	our	investment	in	this	field,	and	the	remaining	

investment	to	be	recovered	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	acquisition	costs)	
from	Oyster	Bayou	Field	was	$165	million.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	Oyster	Bayou	Field	was	
$496.5	million.

Tinsley  Field.  Tinsley	Field	was	acquired	in	January	2006,	is	located	in	Mississippi,	and	was	first	developed	in	the	1930s.	

As	is	the	case	with	the	majority	of	fields	in	Mississippi,	Tinsley	produces	from	multiple	reservoirs.	Our	primary	target	in	
Tinsley	for	CO2	enhanced	oil	recovery	operations	is	the	Woodruff	formation,	although	there	is	additional	potential	in	the	
Perry	sandstone	and	other	smaller	reservoirs.	We	initiated	limited	CO2	injections	in	January	2007	through	a	previously	
existing	8-inch	pipeline,	but	replaced	the	use	of	the	8-inch	line	in	2008	upon	the	completion	of	the	24-inch	Delta	Pipeline	to	
Tinsley	Field.	We	had	our	first	tertiary	oil	production	from	Tinsley	Field	in	April	2008.	As	of	December	31,	2012,	we	have	
completed	the	development	of	the	West	and	East	Fault	Blocks.	In	2012,	we	installed	and	began	injection	into	three	patterns	
of	the	North	Fault	Block	of	Tinsley.	We	also	installed	trunklines	and	a	test	site	to	support	future	North	Fault	Block	
development.	In	2013,	we	expect	to	invest	approximately	$40	million	to	continue	our	development	of	the	North	Fault	Block	
at	Tinsley	Field.	During	the	fourth	quarter	of	2012,	the	average	tertiary	oil	production	was	8,166	Bbls/d	as	compared	to	
6,338	Bbls/d	in	the	year-ago	period.

From	inception	through	December	31,	2012,	we	have	recovered	all	our	costs	in	this	field,	and	our	tertiary	operations	at	
Tinsley	Field	have	generated	excess	net	cash	flow	(revenue	less	operating	expenses	and	capital	expenditures,	including	the	
acquisition	costs)	of	$151	million.	As	of	December	31,	2012,	the	estimated	PV-10	Value	of	Tinsley	Field	was	$1.1	billion.

Future Tertiary Properties with No Tertiary Production or Tertiary Reserves at December 31, 2012

Webster  Field.  We	acquired	our	interest	in	Webster	Field	in	November	2012	as	part	of	the	Bakken	Exchange	

Transaction.	The	field	is	located	in	Texas,	approximately	eight	miles	northeast	of	our	Hastings	Field,	which	we	are	currently	
flooding	with	CO2.	The	acquired	Webster	Field	interests	had	estimated	proved	conventional	reserves	of	approximately		
3.7	MMBOE	at	December	31,	2012.	In	December	2012,	conventional	production	at	Webster	Field	averaged	1,104	BOE/d	net	to	
our	acquired	interest.	Webster	Field	is	geologically	similar	to	our	Hastings	and	Thompson	fields,	producing	oil	from	the		
Frio	zone	at	similar	depths,	and	is	believed	to	be	an	ideal	candidate	for	a	CO2	flood.	In	2013	we	plan	to	invest	approximately	
$20	million	on	conventional	infill	drilling	opportunities	and	recompletions	along	with	preliminary	CO2	flood	scoping	at	
Webster	Field.	We	currently	plan	to	commence	CO2	injections	at	Webster	Field	in	2015,	with	first	tertiary	production	
expected	that	same	year.

Conroe  Field.	Conroe	Field,	our	largest	potential	tertiary	flood	in	the	Gulf	Coast	region,	is	located	north	of	Houston,	
Texas.	We	acquired	a	majority	interest	in	this	field	in	2009	for	approximately	$271	million	in	cash	and	11.6	million	shares	of	
Denbury	common	stock,	for	a	total	aggregate	value	of	$439	million.	The	acquired	Conroe	Field	interests	had	estimated	
proved	conventional	reserves	of	approximately	12.5	MMBOE	at	December	31,	2012,	nearly	all	of	which	are	proved	
developed.	During	the	fourth	quarter	of	2012,	production	at	Conroe	Field	averaged	2,745	BOE/d	net	to	our	acquired	interest,	
compared	to	2,587	BOE/d	in	the	year-ago	period.	Given	the	size	of	the	Conroe	Field	of	approximately	20,000	acres,	the	
volume	of	CO2	that	could	be	injected	is	quite	sizable,	much	larger	than	any	field	we	have	developed	to	date.	Therefore,	the	
pace	of	development	will	partly	be	dictated	by	the	amount	of	available	CO2.

 
 
 
 
 
A	pipeline	must	be	constructed	so	that	CO2	can	be	delivered	to	Conroe	Field.	This	pipeline,	which	is	planned	as	an	
extension	of	our	Green	Pipeline,	is	preliminarily	estimated	to	cover	approximately	90	miles	at	a	cost	of	$200	million	to	
$240	million.	With	our	acquisition	of	Webster	Field	in	2012,	we	deferred	our	construction	plans	for	the	Conroe	pipeline		
by	two	years	thus	similarly	deferring	development	plans	for	Conroe	Field.	We	now	plan	to	construct	this	pipeline	in	2016	
and	to	commence	CO2	injections	at	Conroe	Field	in	2017	with	first	tertiary	production	expected	that	same	year.	In	2013,		
we	plan	to	determine	the	pipeline	path,	continue	the	acquisition	of	rights-of-way,	and	engineer	and	design	the	pipeline	
while	refining	and	finalizing	our	CO2	EOR	plan	for	Conroe	Field.	In	2013	we	also	plan	to	invest	$15	million	on	conventional	
infill	drilling	opportunities	and	recompletions	at	Conroe	Field.

Thompson  Field.	We	acquired	our	interest	in	Thompson	Field	in	June	2012	for	$366.2	million.	The	field	is	located	in	
Texas,	approximately	18	miles	west	of	our	Hastings	Field.	The	acquired	Thompson	Field	interests	had	estimated	proved	
conventional	reserves	of	approximately	16.7	MMBOE	at	December	31,	2012,	of	which	approximately	55%	are	proved	
developed.	In	December	2012,	conventional	production	at	Thompson	Field	averaged	1,507	BOE/d	net	to	our	interest.	Thompson	
Field	is	geologically	similar	to	Hastings	Field,	producing	oil	from	the	Frio	zone	at	similar	depths;	it	is	also	expected	to	be		
an	ideal	candidate	for	a	CO2	flood.	Under	the	terms	of	the	Thompson	Field	acquisition	agreement,	after	the	initiation	of	CO2	
injection	the	seller	will	retain	approximately	a	5%	gross	revenue	interest	(less	severance	taxes)	once	average	monthly	oil	
production	exceeds	3,000	Bbls/d.	In	2013,	we	plan	to	invest	$15	million	on	conventional	infill	drilling	opportunities	and	
recompletions	at	Thompson	Field.	We	currently	plan	to	commence	CO2	injections	at	Thompson	Field	in	mid-2018,	with	first	
tertiary	production	expected	in	2019.

Rocky Mountain Region

CO2 Sources and Pipelines

LaBarge  Field.  LaBarge	Field	is	located	in	southwestern	Wyoming.	The	gas	composition	from	LaBarge	Field	is	
approximately	65%	CO2,	20%	natural	gas,	5%	hydrogen	sulfide	(H2S),	less	than	one	percent	helium,	and	the	remainder	
other	gases.

We	acquired	an	overriding	royalty	interest	equivalent	to	an	approximate	one-third	ownership	interest	in	ExxonMobil’s	

CO2	reserves	in	LaBarge	Field	in	southwestern	Wyoming	in	December	2012	as	part	of	the	Bakken	Exchange	Transaction.	
Based	on	the	current	capacity	of	ExxonMobil’s	Shute	Creek	gas	processing	plant	at	LaBarge	Field	and	subject	to	
availability,	we	expect	to	receive	up	to	approximately	115	MMcf/d	of	CO2	from	such	plant.	We	will	pay	ExxonMobil	a	fee	to	
process	and	deliver	the	CO2,	which	will	initially	be	used	to	flood	our	Bell	Creek,	Grieve	and	Hartzog	Draw	fields.	As	of	
December	31,	2012,	our	interest	in	LaBarge	Field	consisted	of	approximately	1.3	Tcf	of	proved	CO2	reserves.

The	Riley	Ridge	Federal	Unit	is	also	located	in	southwestern	Wyoming	and	will	produce	gas	from	LaBarge	Field.	We	

acquired	interests	in	Riley	Ridge	in	two	phases.	In	2010,	we	acquired	a	42.5%	non-operated	working	interest	for	$132.3	million.	
This	initial	purchase	included	a	42.5%	interest	in	a	gas	plant	under	construction	that	will	separate	the	helium	and	
natural	gas	from	the	gas	stream.	In	2011,	we	acquired	the	remaining	57.5%	working	interest	in	Riley	Ridge	and	the	
remaining	interest	in	the	gas	plant.	As	a	result	of	the	consummation	of	the	second	phase	of	the	transaction,	we	became	
the	operator	of	the	project.	The	purchase	price	for	the	second	phase	was	$214.8	million.	We	currently	expect	the	gas	plant	
to	be	operational	in	mid-2013	once	all	engineering	safety	systems	are	in	place.	We	plan	to	invest	approximately	$40	million		
at	Riley	Ridge	in	2013	to	complete	the	initial	phase	of	the	facilities	and	drill	one	producing	well	and	complete	one		
injection	well.

As	of	December	31,	2012,	our	interest	in	Riley	Ridge	and	minor	surrounding	acreage	contained	net	proved	reserves	of		
416	Bcf	(69	MMBOE)	of	natural	gas	and	2.2	Tcf	of	CO2	reserves.	The	CO2	reserve	estimates	are	based	on	the	gross	working	
interest	of	the	CO2	reserves,	in	which	our	net	revenue	interest	is	approximately	1.6	Tcf.	The	helium	reserves	at	Riley	Ridge	
are	owned	by	the	U.S.	government;	however,	we	have	the	right	to	produce	and	sell	the	helium	reserves	on	behalf	of	the	
government	in	exchange	for	a	fee.	As	of	December	31,	2012,	we	estimate	that	Riley	Ridge	contains	proved	helium	reserves	
of	12.7	Bcf,	which	volume	estimate	is	reduced	to	reflect	the	related	fee	we	will	remit	to	the	U.S.	government.	In	addition,	we	
believe	there	is	significant	reserve	potential	in	other	acreage	surrounding	Riley	Ridge	in	which	we	also	own	an	interest.

The	gas	plant	currently	under	construction	at	Riley	Ridge	will	separate	the	natural	gas	and	helium	from	the	full	well	
stream,	and	the	remaining	gases,	including	CO2,	will	initially	be	reinjected	into	the	producing	formation	until	a	planned	CO2	
capture	facility	and	pipeline	can	be	built.	We	have	initiated	the	engineering	and	design	of	the	CO2	capture	facility,		
which	is	estimated	to	initially	capture	up	to	130	MMcf/d	of	CO2,	and	we	currently	plan	to	double	this	capacity	within	the	
next	decade.	We	currently	project	that	we	will	start	to	use	CO2	from	Riley	Ridge	around	2017.

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Other  Rocky  Mountain  CO2  Sources.	We	have	ongoing	discussions	with,	and	are	actively	pursuing,	several	sources	

for	CO2	supply	in	the	Rocky	Mountain	region.	We	have	contracted	to	purchase	CO2	from	the	Lost	Cabin	plant	in	central	
Wyoming,	which	agreement	will	provide	as	much	as	50	MMcf/d	of	CO2	from	the	Lost	Cabin	plant.	We	have	completed	all	
necessary	work	to	receive	the	CO2	and	expect	first	CO2	deliveries	from	Lost	Cabin	in	the	first	quarter	of	2013.

In	2011,	we	entered	into	a	long-term	supply	contract	to	purchase	anthropogenic	CO2	from	a	proposed	plant	in	

southeastern	Wyoming.	We	estimate	the	proposed	plant	could	initially	supply	approximately	100	MMcf/d,	and	
potentially	up	to	200	MMcf/d	of	CO2	for	our	enhanced	oil	recovery	operations	in	Wyoming	and	Montana.	We	would	
expect	to	begin	taking	delivery	of	CO2	approximately	four	years	following	commencement	of	construction	of	this	plant.	
The	purchase	price	of	CO2	will	fluctuate	based	on	changes	in	the	price	of	oil.	As	is	the	case	with	all	of	our	long-term	
supply	contracts	to	purchase	CO2	from	proposed	plants,	the	agreement	is	subject	to	various	contingencies,	and	
completion	of	the	plant	is	contingent	upon	securing	debt	financing	and	equity	commitments,	along	with	receipt	of	all	
necessary	consents	and	approvals.

Greencore  Pipeline.	The	20-inch	Greencore	Pipeline	in	Wyoming	is	the	first	CO2	pipeline	constructed	by	Denbury	in	the	

Rocky	Mountain	region.	As	currently	planned,	the	pipeline	will	serve	as	our	trunk-line	in	the	Rocky	Mountain	region,	
eventually	connecting	our	Lost	Cabin,	LaBarge	and	Riley	Ridge	CO2	sources	(see	Rocky Mountain region CO2 Sources and 
Pipelines	above)	to	the	Cedar	Creek	Anticline	in	eastern	Montana,	and	may	connect	to	other	potential	anthropogenic	CO2	
sources	in	the	region.	The	initial	232-mile	section	of	the	Greencore	Pipeline	begins	at	the	Lost	Cabin	gas	plant	and	
terminates	at	our	Bell	Creek	oil	field	in	Montana.	We	completed	construction	of	this	section	of	the	pipeline	in	late	2012	and	
expect	to	receive	first	CO2	deliveries	from	the	Lost	Cabin	gas	plant	in	the	first	quarter	of	2013.	In	2013,	we	plan	to	build	an	
interconnect	between	our	Greencore	Pipeline	and	an	existing	third-party	CO2	pipeline	owned	by	another	party	in	Wyoming.	
We	plan	to	transport	CO2	from	LaBarge	Field	to	the	Greencore	Pipeline	through	this	existing	pipeline	for	use	in	planned	CO2	
floods	at	Bell	Creek	and	Hartzog	Draw	fields.

Future Tertiary Properties with No Tertiary Production or Tertiary Reserves at December 31, 2012

Bell  Creek  Field.	Bell	Creek	Field	is	located	in	southeast	Montana.	We	acquired	our	interest	in	Bell	Creek	through	the	
Encore	Merger.	As	of	December	31,	2012,	the	majority	of	the	work	in	this	field	has	involved	re-activating	wells	and	injecting	
additional	water	into	the	reservoir	to	raise	reservoir	pressure	in	anticipation	of	future	CO2	injections.	The	original	operator	
of	the	field	temporarily	abandoned	wells	in	such	a	way	as	to	preserve	the	mechanical	integrity	of	the	wellbore	and	to	
minimize	the	cost	of	re-entering	the	wells.	We	expect	to	have	first	CO2	injections	in	Bell	Creek	Field	in	the	first	half	of	2013	
and	anticipate	first	tertiary	oil	production	in	the	second	half	of	2013.	The	producing	reservoir	in	Bell	Creek	Field	is	a	
sandstone	reservoir	very	similar	to	our	Gulf	Coast	reservoirs.	Conventional	production,	net	to	our	interest,	during	the	
fourth	quarter	of	2012	averaged	781	Bbls/d,	as	compared	to	840	Bbls/d	in	the	year-ago	period.	In	2013,	we	plan	to	invest	
approximately	$100	million	to	install	compression	equipment	and	facilities	and	continue	the	development	of	injection	
patterns	at	Bell	Creek	Field.

Hartzog  Draw  Field.	We	acquired	our	interest	in	Hartzog	Draw	Field	in	November	2012	as	part	of	the	Bakken	Exchange	

Transaction.	The	field	is	located	in	the	Powder	River	Basin	of	northeastern	Wyoming,	approximately	12	miles	from	our	
Greencore	Pipeline.	The	acquired	Hartzog	Draw	interests	had	estimated	proved	reserves	of	approximately	5.2	MMBOE	at	
December	31,	2012,	1.9	MMBOE	of	which	relate	to	the	natural	gas	producing	Big	George	coal	zone.	In	December	2012,	
conventional	production	at	Hartzog	Draw	Field	averaged	2,444	BOE/d	net	to	our	acquired	interest.	The	oil	reservoir	
characteristics	of	Hartzog	Draw	Field	make	the	field	an	ideal	candidate	for	a	CO2	flood.	In	2013,	we	plan	to	invest	
approximately	$13	million	on	conventional	infill	drilling	opportunities	and	recompletions	at	Hartzog	Draw	Field.	We	must	
obtain	regulatory	approval	and	construct	a	12-mile	CO2	pipeline	from	our	existing	Greencore	Pipeline	to	Hartzog	Draw	Field	
before	we	can	commence	an	EOR	flood.	We	anticipate	that	we	will	be	able	to	commence	CO2	injections	at	Hartzog	Draw	
Field	in	2016	with	first	tertiary	production	expected	that	same	year.

Cedar  Creek  Anticline.  CCA	is	primarily	located	in	Montana	but	covers	such	a	large	area	(approximately	126	miles)	
that	it	also	extends	into	North	Dakota.	CCA	is	a	series	of	10	producing	oil	units,	each	of	which	could	be	considered	a	field	
by	itself.	We	acquired	our	initial	interest	in	CCA	as	part	of	the	Encore	Merger,	and	it	is	currently	the	largest	potential	EOR	
field	we	own.	Production,	net	to	our	interest,	during	the	fourth	quarter	of	2012	from	all	of	the	units	in	CCA	averaged		
8,493	BOE/d,	compared	to	8,858	BOE/d	in	the	year-ago	period.	The	conventional	proved	reserves	associated	with	CCA	were	
66.8	MMBbls	of	oil	and	0.4	Bcf	of	gas	as	of	December	31,	2012.	In	January	2013,	we	entered	into	a	definitive	agreement		
with	a	wholly-owned	subsidiary	of	ConocoPhillips	whereby	we	plan	to	add	to	our	CCA	assets	through	the	purchase	of	

 
 
 
 
 
ConocoPhillips’	assets	in	the	field.	See	2012 Business Developments – Pending Cedar Creek Anticline Acquisition	above		
and	Note	2, Acquisitions and Divestitures, to	the	Consolidated	Financial	Statements	for	further	discussion	of	this	
transaction	and	information	as	to	other	recent	acquisitions	and	divestitures	by	Denbury.	The	Pending	CCA	Acquisition	is	
expected	to	add	approximately	42	MMBOE	of	incremental	proved	reserves	at	CCA;	production	associated	with	these	
assets	averaged	approximately	11,000	BOE/d	during	the	fourth	quarter	of	2012.

CCA	is	located	approximately	110	miles	north	of	Bell	Creek	Field,	and	we	expect	to	ultimately	connect	this	field	to	our	

Greencore	Pipeline.	In	2013,	we	plan	to	invest	approximately	$115	million	to	improve	waterfloods	of	CCA	through	well		
and	facility	work,	recomplete	existing	wells,	and	develop	plans	for	our	planned	future	CO2	flood	of	the	field.	We	currently	
plan	to	commence	first	CO2	injections	into	the	field	in	2017	with	first	tertiary	production	expected	that	same	year.

Grieve  Field.  In	May	2011,	we	entered	into	a	farm-in	agreement,	under	which	we	have	the	right	to	acquire	up	to	65%	of	
the	working	interest	in	the	Grieve	Field,	located	in	Natrona	County,	Wyoming.	We	are	overseeing	design,	construction	and	
operations	of	the	field.	We	completed	the	required	three-mile	CO2	pipeline	to	deliver	CO2	from	an	existing	CO2	pipeline	to	
the	Grieve	Field	in	December	2012,	and	are	contracting	for	the	construction	of	the	CO2	recycle	facility.	We	estimate	first	CO2	
injection	at	Grieve	Field	in	the	first	quarter	of	2013	and	first	tertiary	production	late	in	2014	or	early	in	2015.

Non-Tertiary Oil Properties

Our	non-tertiary	production	in	2012	totaled	36,483	BOE/d,	or	51%	of	total	production.	Excluding	production	from	the	

non-core	asset	divestitures	discussed	above,	our	continuing	non-tertiary	production	totaled	21,636	BOE/d	or	38%	of	our	
continuing	production	in	2012.	A	substantial	portion	of	this	production	is	generated	from	fields	we	intend	to	flood	with	CO2	
in	the	future,	and	which	are	discussed	above	under	Tertiary Oil Properties – Gulf Coast Region – Future Tertiary Properties 
with No Tertiary Production or Tertiary Reserves at December 31, 2012 and Tertiary Oil Properties – Rocky Mountain Region –  
Future Tertiary Properties with No Tertiary Production or Tertiary Reserves at December 31, 2012.

Gulf Coast Region

Other  Non-Tertiary  Fields.  We	have	been	active	in	East	Mississippi	since	Denbury	was	founded	in	1990	and	are	the	

largest	oil	producer	in	the	state.	Conventional	or	non-tertiary	production	during	the	fourth	quarter	of	2012	averaged	
approximately	3,663	BOE/d	from	this	area	(6%	of	our	total	continuing	production),	and	we	had	proved	reserves	of	11.1	MMBOE	
as	of	December	31,	2012	(3%	of	our	Company	total).	Since	we	have	generally	owned	these	properties	in	East	Mississippi	
longer	than	properties	in	our	other	regions,	these	East	Mississippi	properties	tend	to	be	more	fully	developed.	In	2012,	we	
completed	the	sale	of	certain	non-core	assets	with	proved	reserves	of	6.4	MMBOE	primarily	located	in	central	and	southern	
Mississippi	and	in	southern	Louisiana	for	$141.8	million.

Our	largest	field	in	the	region	is	the	Heidelberg	Field	located	in	Mississippi,	which	for	the	fourth	quarter	of	2012	produced	
an	average	of	1,947	BOE/d	of	conventional	or	non-tertiary	production.	This	compares	to	3,129	BOE/d	in	the	year-ago	period,	
with	most	of	the	decline	in	production	due	to	the	conversion	of	conventional	areas	of	the	field	to	a	CO2	flood	and	the	
decline	in	natural	gas	production	in	the	Selma	Chalk.	Most	of	the	past	and	current	production	comes	from	the	Eutaw,	
Selma	Chalk	and	Christmas	sands	at	depths	from	3,500	feet	to	5,000	feet.	The	majority	of	the	conventional	oil	production	at	
Heidelberg	Field	is	from	waterflood	units	that	produce	from	the	Eutaw	formation	(at	approximately	4,400	feet).	We	have	
converted	all	of	the	waterflood	units	in	West	Heidelberg	to	CO2	EOR	and	are	in	the	process	of	converting	the	East	
Heidelberg	waterflood	units	to	CO2	EOR.	Heidelberg	Field	also	produces	natural	gas	from	the	Selma	Chalk,	which	was	a	
fairly	active	area	of	development	for	us	prior	to	2009.	The	Selma	Chalk	is	a	natural	gas	reservoir	at	approximately	3,700	feet	
that	is	developed	with	horizontal	wells	and,	prior	to	2012,	hydraulic	fracturing.	The	Selma	Chalk	is	estimated	to	contain		
28.2	Bcf	of	proved	natural	gas	reserves	as	of	December	31,	2012.	Natural	gas	production	from	the	Selma	Chalk	was	10.5	MMcf/d	
during	the	fourth	quarter	of	2012,	compared	to	13.4	MMcf/d	in	the	year-ago	period.	The	decline	in	production	is	due	to	a	
decrease	in	drilling	activity	over	the	past	several	years,	combined	with	a	rapid	decline	rate	in	the	Selma	Chalk	wells.

OIL AND GAS ACREAGE, PRODUCTIVE WELLS AND DRILLING ACTIVITY

In	the	data	below,	“gross”	represents	the	total	acres	or	wells	in	which	we	own	a	working	interest	and	“net”	represents	
the	gross	acres	or	wells	multiplied	by	our	working	interest	percentage.	For	the	wells	that	produce	both	oil	and	gas,	the	well	
is	typically	classified	as	an	oil	or	natural	gas	well	based	on	the	ratio	of	oil	to	natural	gas	production.

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Oil and Gas Acreage

The	following	table	sets	forth	our	acreage	position	at	December	31,	2012:

Gulf	Coast	region	
Rocky	Mountain	region	
	 Total		

Developed 

Undeveloped 

Total 

Gross 

247,841	
275,449	
523,290	

Net 

211,655	
225,863	
437,518	

Gross 

371,655	
345,567	
717,222	

Net 

36,569	
133,000	
169,569	

Gross 

619,496	
621,016	
1,240,512	

Net

248,224
358,863
607,087

Our	net	undeveloped	acreage	that	is	subject	to	expiration	over	the	next	three	years,	if	not	renewed,	is	approximately	

35%	in	2013,	2%	in	2014	and	4%	in	2015.

Productive Wells

The	following	table	sets	forth	our	gross	and	net	productive	oil	and	natural	gas	wells	as	of	December	31,	2012:

Producing 
Oil Wells 

Gross 

Net 

Producing 
  Natural Gas Wells   
Net 
Gross 

Total 

Gross 

Net

1,315	
880	
2,195	

38	
48	
86	

1,353	
928	
2,281	

1,231.6	
750.0	
1,981.6	

1.3	
9.5	
10.8	

1,232.9	
759.5	
1,992.4	

190	
3	
193	

—	
308	
308	

190	
311	
501	

174.1	
2.4	
176.5	

—	
155.5	
155.5	

174.1	
157.9	
332.0	

1,505	
883	
2,388	

38	
356	
394	

1,543	
1,239	
2,782	

1,405.7
752.4
2,158.1

1.3
165.0
166.3

1,407.0
917.4
2,324.4

Operated wells:
Gulf	Coast	region	
Rocky	Mountain	region	
	 Total		

Non-operated wells:
Gulf	Coast	region	
Rocky	Mountain	region	
	 Total		

Total wells:
Gulf	Coast	region	
Rocky	Mountain	region	
	 Total		

Drilling Activity

The	following	table	sets	forth	the	results	of	our	drilling	activities	over	the	last	three	years.	As	of	December	31,	2012,	we	

had	19	gross	(13.3	net)	wells	in	progress.

Exploratory	wells:	(1)
	 Productive	(2)	
	 Non-productive	(3)	
Development	wells:	(1)
	 Productive	(2)	
	 Non-productive	(3) (4)	

	 Total	 	

2012 

2011 

2010 

Gross 

Net 

Gross 

Net 

Gross 

Net

 Year Ended December 31, 

1	
1	

205	
16	
223	

—	
—	

90.4	
11.8	
102.2	

—	
1	

221	
—	
222	

—	
0.7	

116.6	
—	
117.3	

—	
—	

127	
—	
127	

—
—

62.8
—
62.8

(1)	 An	exploratory	well	is	a	well	drilled	to	find	a	new	field	or	to	find	a	new	reservoir	in	a	field	previously	found	to	be	productive	of	oil	or	natural	gas	in	another	

reservoir.	Generally,	an	exploratory	well	is	any	well	that	is	not	a	development	well,	an	extension	well,	a	service	well	or	a	stratigraphic	test	well.	A	development	
well	is	a	well	drilled	within	the	proved	area	of	an	oil	or	gas	reservoir	to	the	depth	of	a	stratigraphic	horizon	known	to	be	productive.

(2)	 A	productive	well	is	an	exploratory	or	development	well	found	to	be	capable	of	producing	either	oil	or	natural	gas	in	sufficient	quantities	to	justify	completion	

as	an	oil	or	natural	gas	well.

(3)	 A	non-productive	well	is	an	exploratory	or	development	well	that	is	not	a	productive	well.

(4)	 During	2012,	2011	and	2010,	an	additional	45,	46	and	41	wells,	respectively,	were	drilled	for	water	or	CO2	injection	purposes.

 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
The	following	table	summarizes	sales	volumes,	sales	prices	and	production	cost	information	for	our	net	oil	and	natural	

gas	production	for	the	years	ended	December	31,	2012,	2011	and	2010:

 Year Ended December 31,

2012 

2011 

2010

Net sales volume:
	 Gulf	Coast	region
	 Oil	(MBbls)	
	 Natural	gas	(MMcf)	

Total	Gulf	Coast	region	(MBOE)	

	 Rocky	Mountain	region	(1)

	 Oil	(MBbls)	
	 Natural	gas	(MMcf)	
	 Total	Rocky	Mountain	region	(MBOE)	

Total	Company	(MBOE)	

Average sales price:
	 Gulf	Coast	region
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	
	 Rocky	Mountain	region

	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

	 Total	Company
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

Average production cost (per BOE sold): (2)
	 Gulf	Coast	region	
	 Rocky	Mountain	region	

	 Total	Company	

	 15,621	
	 5,907	
	 16,606	

	 8,841	
	 4,747	
	 9,632	
	 26,238	

$	105.59	
2.79	

$	 82.33	
3.38	

$	 97.18	
3.05	

$	 24.96	
	 12.23	
	 20.29	

	 14,635	
	 7,934	
	 15,957	

	 7,534	
	 2,849	
	 8,009	
	 23,966	

$	105.23	
4.31	

$	 89.93	
6.12	

$	100.03	
4.79	

$	 24.51	
	 14.52	
	 21.17	

	14,657
	22,271
	18,369

	 7,212
	 6,220
	 8,249
	26,618

$	78.35
	 4.56

$	71.12
	 4.90

$	75.97
	 4.63

$	19.94
	 12.61
	 17.67

(1)	 The	year	ended	December	31,	2012	includes	production	of	approximately	5.3	MMBOE	from	our	Bakken	area	assets	sold	in	the	fourth	quarter,	and	excludes	

production	related	to	the	Pending	CCA	Acquisition,	which	we	currently	expect	to	close	near	the	end	of	the	first	quarter	of	2013.

(2)	 Excludes	oil	and	natural	gas	ad	valorem	and	production	taxes.

PRODUCTION AND UNIT PRICES

Further	information	regarding	average	production	rates,	unit	sale	prices	and	unit	costs	per	BOE	are	set	forth	under		
Item	7,	Management’s Discussion and Analysis of Financial Condition and Results of Operations – Operating Results,	
included	herein.

TITLE TO PROPERTIES

Customarily	in	the	oil	and	natural	gas	industry,	only	a	perfunctory	title	examination	is	conducted	at	the	time	properties	
believed	to	be	suitable	for	drilling	operations	are	first	acquired.	Prior	to	commencement	of	drilling	operations,	a	thorough	
drill	site	title	examination	is	normally	conducted,	and	curative	work	is	performed	with	respect	to	significant	defects.	
Typically,	in	connection	with	acquisitions,	title	reviews	are	performed	on	selected	higher-value	properties.	We	believe	that	
we	have	good	title	to	our	oil	and	natural	gas	properties,	some	of	which	are	subject	to	encumbrances,	easements	and	
restrictions	which	we	do	not	believe	are	material	to	our	operations.

SIGNIFICANT OIL AND GAS PURCHASERS AND PRODUCT MARKETING

Oil	and	gas	sales	are	made	on	a	day-to-day	basis	under	short-term	contracts	at	the	current	area	market	price.	The	loss	of	

any	single	purchaser	would	not	be	expected	to	have	a	material	adverse	effect	upon	our	operations;	however,	the	loss		
of	a	large	single	purchaser	could	potentially	reduce	the	competition	for	our	oil	and	natural	gas	production,	which	in	turn	
could	negatively	impact	the	prices	we	receive.	For	the	years	ended	December	31,	2012,	2011	and	2010,	two	purchasers	
accounted	for	10%	or	more	of	our	oil	and	natural	gas	revenues:	Marathon	Petroleum	Company	LLC	(39%,	43%	and	46%	in	
2012,	2011	and	2010,	respectively)	and	Plains	Marketing	LP	(17%,	16%	and	14%	in	2012,	2011	and	2010,	respectively).

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Our	ability	to	market	oil	and	natural	gas	depends	on	many	factors	beyond	our	control,	including	the	extent	of	domestic	

production	and	imports	of	oil	and	gas,	the	proximity	of	our	oil	and	natural	gas	production	to	pipelines,	the	available	
capacity	in	such	pipelines,	the	demand	for	oil	and	natural	gas,	the	effects	of	weather,	and	the	effects	of	state	and	federal	
regulation.	Our	production	in	the	Gulf	Coast	region	is	primarily	from	developed	fields	close	to	major	pipelines	or	refineries	
and	established	infrastructure.	Our	production	in	the	Rocky	Mountain	region	is	dependent	on,	among	other	factors,	limited	
transportation	options	caused	by	oversubscribed	pipelines	and	market	centers	that	are	distant	from	producing	properties.	
As	of	December	31,	2012,	we	have	not	experienced	significant	difficulty	in	finding	a	market	for	all	of	our	production	as	it	
becomes	available	or	in	transporting	our	production	to	those	markets;	however,	there	is	no	assurance	that	we	will	always	
be	able	to	market	all	of	our	production	or	obtain	favorable	prices.

Oil Marketing

Over	the	past	couple	of	years,	the	oil	produced	in	the	Gulf	Coast	region	has	benefited	from	strong	pricing	differentials	in	

relation	to	NYMEX	and,	where	possible,	we	have	attached	our	production	to	Louisiana	Light	Sweet	(“LLS”)	pricing.	During	
2012	and	2011,	our	light	sweet	oil	production	in	this	area,	on	average,	sold	for	more	than	$11.50	per	Bbl	over	NYMEX.	The	
light	and	medium	sour	crude	production	has	also	benefited	from	the	continued	strength	of	other	Gulf	Coast	grades	relative	
to	NYMEX,	with	production	in	2012	selling	at	a	premium	to	NYMEX	of	$6.69	per	Bbl.	Historically,	LLS	pricing	and	NYMEX	
pricing	have	been	much	closer	together	than	the	spread	we	have	experienced	over	the	last	two	years.	The	market	dynamics	
of	the	region	suggest	the	possibility	of	divergence	from	the	current	premiums	currently	being	realized	due	to	the	influx	of	
light	sweet	crude	and	condensate	from	producing	regions	outside	of	the	Gulf	Coast	region	by	rail	and	publicly	announced	
major	pipeline	projects.	Our	current	markets,	at	various	sales	points	along	the	Gulf	Coast,	have	sufficient	demand	to	
accommodate	our	production,	but	there	can	be	no	assurance	of	future	demand,	and	we	are	therefore	monitoring	the	
marketplace	for	opportunities	to	strategically	enter	into	long-term	marketing	arrangements.

The	marketing	of	our	Rocky	Mountain	region	oil	production	is	dependent	on	transportation	through	local	pipelines	to	
market	centers	in	Guernsey,	Wyoming;	Clearbrook,	Minnesota;	and	Wood	River,	Illinois.	Shipments	on	some	of	the	pipelines	
are	oversubscribed	and	subject	to	apportionment.	We	have	currently	been	allocated	sufficient	pipeline	capacity	to	move	
our	oil	production;	however,	there	can	be	no	assurance	that	we	will	be	allocated	sufficient	pipeline	capacity	to	move	all	of	
our	oil	production	in	the	future.	Expansion	of	pipeline	and	newly	built	rail	infrastructure	in	the	Rocky	Mountain	region	is	
ongoing	and,	we	believe,	has	increased	stability	of	oil	differentials	in	the	area,	although	recent	events	resulting	in	wider	
than	usual	differentials	in	the	current	markets	are	expected	to	remain	in	place	until	incremental	takeaway	capacity	comes	
on	line.	For	the	year	ended	December	31,	2012,	the	discount	for	our	oil	production	in	the	Rocky	Mountain	region	averaged	
$11.86	per	Bbl,	compared	to	$5.15	per	Bbl	during	2011.	Excluding	the	Bakken	area	assets	that	we	sold	during	the	fourth	
quarter	of	2012,	our	oil	production	in	the	Rocky	Mountain	region	sold	at	a	discount	to	NYMEX	of	$8.43	per	Bbl	during	the	
year	ended	December	31,	2012.

Overall,	during	2012,	we	sold	approximately	40%	of	our	crude	oil	at	prices	based	on	the	LLS	index	price,	approximately	
22%	at	prices	partially	tied	to	the	LLS	index	price,	and	the	balance	at	prices	based	on	various	other	indexes	tied	to	NYMEX	
prices,	primarily	in	the	Rocky	Mountain	region.	On	a	pro	forma	basis	excluding	Bakken	area	assets	sold	in	2012,	we	sold	
approximately	49%	of	our	crude	oil	at	prices	based	on	the	LLS	index	price	and	approximately	27%	at	prices	partially	tied	to	
the	LLS	index	price.

Natural Gas Marketing

Virtually	all	of	our	natural	gas	production	in	the	Gulf	Coast	region	is	close	to	existing	pipelines;	consequently,	we	generally	
have	a	variety	of	options	to	market	our	natural	gas.	Our	gas	production	in	the	Rocky	Mountain	region,	like	our	oil	production,	
is	dependent	on,	among	other	factors,	limited	transportation	options	that	can	affect	our	ability	to	find	markets	for	it.		
We	sell	the	majority	of	our	natural	gas	on	one-year	contracts,	with	prices	fluctuating	month-to-month	based	on	published	
pipeline	indices	and	with	slight	premiums	or	discounts	to	the	index.	We	currently	receive	near	NYMEX	or	Henry	Hub	prices	
for	most	of	our	natural	gas	sales	in	Mississippi.	For	the	year	ended	December	31,	2012,	the	amount	received	per	Mcf	for	our	
Mississippi	natural	gas	production	was	consistent	with	NYMEX	prices.	In	the	Texas	Gulf	Coast	region,	due	primarily	to	its	
location,	the	price	we	received	for	the	year	ended	December	31,	2012	averaged	$0.08	per	Mcf	below	NYMEX	prices.	The	Rocky	
Mountain	region	natural	gas	production	is	sold	at	the	wellhead	on	a	percent	of	proceeds	basis.	We	receive	a	percentage	of	
proceeds	on	both	the	residue	natural	gas	volumes	and	the	natural	gas	liquids	volumes.	The	natural	gas	has	a	significant	
component	of	propane,	butanes	and	other	higher-density	hydrocarbons,	resulting	in	a	measurable	natural	gas	liquids	stream.	
For	the	year	ended	December	31,	2012,	we	averaged	$0.55	per	Mcf	over	NYMEX	prices	for	our	Rocky	Mountain	region	natural	
gas	production	due	primarily	to	the	natural	gas	liquids	extracted	from	the	gas	stream,	improving	the	net	price	we	receive.

 
 
 
 
 
Helium Marketing

We	expect	production	to	commence	at	Riley	Ridge	Field	in	mid-2013,	after	which	we	expect	to	begin	to	supply	helium		
to	a	third	party	purchaser	under	a	20-year	helium	supply	arrangement.	Helium	will	be	sold	under	the	contract	at	a	price	
that	will	fluctuate	based	on	helium	deliveries,	CPI	and	other	factors	over	the	20-year	term.

COMPETITION AND MARKETS

We	face	competition	from	other	oil	and	natural	gas	companies	in	all	aspects	of	our	business:	including	acquisition	of	

producing	properties,	oil	and	gas	leases,	and	CO2	properties;	marketing	of	oil	and	natural	gas;	and	obtaining	goods,	
services	and	labor.	Many	of	our	competitors	have	substantially	larger	financial	and	other	resources.	Factors	that	affect	our	
ability	to	acquire	producing	properties	include	available	liquidity,	available	information	about	prospective	properties	and	
our	expectations	for	earning	a	minimum	projected	return	on	our	investments.	Gathering	systems	are	the	only	practical	
method	for	the	intermediate	transportation	of	natural	gas.	Therefore,	competition	for	natural	gas	delivery	is	presented	by	
other	pipelines	and	gas	gathering	systems.	Competition	is	also	presented	to	a	lesser	extent	by	alternative	fuel	sources,	
including	heating	oil	and	other	fossil	fuels.	Because	of	the	primary	nature	of	our	core	assets	(our	tertiary	operations)	
and	our	ownership	of	relatively	uncommon	significant	natural	sources	of	CO2	in	the	Gulf	Coast	and	Rocky	Mountain	
regions,	we	believe	that	we	are	effective	in	competing	in	the	market	and	have	less	competition	than	our	peers	in	certain	
aspects	of	our	business.

The	demand	for	qualified	and	experienced	field	personnel	to	drill	wells	and	conduct	field	operations	and	for	geologists,	

geophysicists,	engineers	and	other	professionals	in	the	oil	and	natural	gas	industry	can	fluctuate	significantly,	often	in	
correlation	with	oil	and	natural	gas	prices,	causing	periodic	shortages	in	such	personnel.	In	recent	years,	the	competition	
for	qualified	technical	personnel	has	been	extensive	and	our	personnel	costs	have	been	escalating	at	a	rate	higher	than	
general	inflation.	There	have	also	been	shortages	of	drilling	rigs	and	other	equipment,	as	demand	for	rigs	and	equipment	
has	increased	along	with	the	number	of	wells	being	drilled.	These	factors	also	cause	significant	increases	in	costs	for	
equipment,	services	and	personnel.	Higher	oil	and	natural	gas	prices	generally	stimulate	increased	demand	and	result	in	
increased	prices	for	drilling	rigs,	crews	and	associated	supplies,	equipment	and	services.	We	cannot	be	certain	when	we	
will	experience	these	issues,	and	these	types	of	shortages	or	price	increases	could	significantly	decrease	our	profit	margin,	
cash	flow	and	operating	results	or	restrict	our	ability	to	drill	those	wells	and	conduct	those	operations	that	we	currently	
have	planned	and	budgeted.

FEDERAL AND STATE REGULATIONS

Numerous	federal	and	state	laws	and	regulations	govern	the	oil	and	gas	industry.	Additions	or	changes	to	these	laws	

and	regulations	are	often	made	in	response	to	the	current	political	or	economic	environment.	Compliance	with	this	
evolving	regulatory	burden	is	often	difficult	and	costly,	and	substantial	penalties	may	be	incurred	for	noncompliance.	The	
following	sections	describe	some	specific	laws	and	regulations	that	may	affect	us.	We	cannot	predict	the	impact	of	these	or	
other	future	legislative	or	regulatory	initiatives.

Management	believes	that	we	are	in	substantial	compliance	with	all	laws	and	regulations	applicable	to	our	operations	

and	that	continued	compliance	with	existing	requirements	will	not	have	a	material	adverse	impact	on	us.	The	future	
annual	cost	of	complying	with	the	regulations	applicable	to	our	operations	is	uncertain	and	will	be	governed	by	several	
factors,	including	future	changes	to	regulatory	requirements.	However,	management	does	not	currently	anticipate	that	
future	compliance	will	have	a	materially	adverse	effect	on	our	consolidated	financial	position,	results	of	operations	or	cash	
flows,	although	compliance	and	regulatory	approval	could	cause	delays	or	otherwise	impede	operations.

Regulation of Natural Gas and Oil Exploration and Production

Our	operations	are	subject	to	various	types	of	regulation	at	the	federal,	state	and	local	levels.	Such	regulation	includes	
requiring	permits	for	drilling	wells;	maintaining	bonding	requirements	in	order	to	drill	or	operate	wells	and	regulating	the	
location	of	wells;	the	method	of	drilling	and	casing	wells;	the	surface	use	and	restoration	of	properties	upon	which	wells	
are	drilled;	the	plugging	and	abandoning	of	wells;	and	the	composition	or	disposal	of	chemicals	and	fluids	used	in	
connection	with	operations.	Our	operations	are	also	subject	to	various	conservation	laws	and	regulations.	These	include	
regulation	of	the	size	of	drilling,	spacing	or	proration	units	and	the	density	of	wells	that	may	be	drilled	in	those	units,	and	
the	unitization	or	pooling	of	oil	and	gas	properties.	In	addition,	state	conservation	laws,	which	establish	maximum	rates	of	
production	from	oil	and	gas	wells,	generally	prohibit	or	restrict	the	venting	or	flaring	of	natural	gas	and	impose	certain	

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requirements	regarding	the	ratability	of	production.	The	effect	of	these	regulations	may	limit	the	amount	of	oil	and	natural	
gas	we	can	produce	from	our	wells	and	may	limit	the	number	of	wells	or	the	locations	at	which	we	can	drill.	The	regulatory	
burden	on	the	oil	and	gas	industry	increases	our	costs	of	doing	business	and,	consequently,	affects	our	profitability.

Federal Regulation of Sales Prices and Transportation

The	transportation	and	certain	sales	of	natural	gas	in	interstate	commerce	are	heavily	regulated	by	agencies	of	the	U.S.	
federal	government	and	are	affected	by	the	availability,	terms	and	cost	of	transportation.	In	particular,	the	price	and	terms	
of	access	to	pipeline	transportation	are	subject	to	extensive	U.S.	federal	and	state	regulation.	The	Federal	Energy	
Regulatory	Commission	(“FERC”)	is	continually	proposing	and	implementing	new	rules	and	regulations	affecting	the	natural	
gas	industry.	Some	of	FERC’s	proposals	may	adversely	affect	the	availability	and	reliability	of	interruptible	transportation	
service	on	interstate	pipelines.	While	our	sales	of	crude	oil,	condensate	and	natural	gas	liquids	are	not	currently	subject	to	
FERC	regulation,	our	ability	to	transport	and	sell	such	products	is	dependent	on	certain	pipelines	whose	rates,	terms	and	
conditions	of	service	are	subject	to	FERC	regulation.	Additional	proposals	and	proceedings	that	might	affect	the	natural	
gas	industry	are	considered	from	time	to	time	by	Congress,	FERC,	state	regulatory	bodies	and	the	courts.	We	cannot	predict	
when	or	if	any	such	proposals	might	become	effective	and	their	effect,	if	any,	on	our	operations.

Federal Energy and Climate Change Legislation and Regulation

In	early	2012,	the	President	signed	the	Pipeline	Safety,	Regulatory	Certainty	and	Job	Creation	Act	of	2011.	This	act,	among	

other	things,	updates	federal	pipeline	safety	standards,	increases	penalties	for	violations	of	such	standards,	gives	the	
Department	of	Transportation	(the	“DOT”)	authority	for	new	damage	prevention	and	incident	notification,	and	directs	the	
DOT	to	prescribe	new	minimum	safety	standards	for	CO2	pipelines,	which	safety	standards	could	affect	our	operations	and	
the	costs	thereof.	The	DOT	has	not	yet	promulgated	any	such	new	minimum	safety	standards.	In	the	future,	Congress	may	
create	new	incentives	for	alternative	energy	sources	and	may	also	consider	legislation	to	reduce	emissions	of	CO2	or	other	
greenhouse	gases.	If	enacted,	such	legislation	could	(1)	impose	a	tax	or	other	economic	penalty	on	the	production	of	fossil	
fuels	that,	when	used,	ultimately	release	CO2,	(2)	reduce	the	demand	for,	and	uses	of,	oil,	gas	and	other	minerals,	and/or		
(3)	increase	the	costs	incurred	by	us	in	our	exploration	and	production	activities.	The	Environmental	Protection	Agency	
(“EPA”)	has	promulgated	regulations	requiring	permitting	for	certain	sources	of	greenhouse	gas	emissions,	along	with	
requirements	for	wells	used	for	geologic	sequestration.	At	the	same	time,	legislation	to	reduce	the	emissions	of	CO2		
or	other	greenhouse	gases	could	also	create	economic	incentives	for	technologies	and	practices	that	reduce	or	avoid	such	
emissions,	including	processes	that	sequester	CO2	in	geologic	formations	such	as	depleted	oil	and	gas	reservoirs.

Natural Gas Gathering Regulations

State	regulation	of	natural	gas	gathering	facilities	generally	includes	various	safety,	environmental	and,	in	some	
circumstances,	nondiscriminatory-take	requirements.	Although	such	regulation	has	not	generally	been	affirmatively	
applied	by	state	agencies,	natural	gas	gathering	may	receive	greater	regulatory	scrutiny	in	the	future.

Federal, State or Indian Leases

Our	operations	on	federal,	state	or	Indian	oil	and	gas	leases,	especially	those	in	the	Rocky	Mountains,	are	subject	to	

numerous	restrictions,	including	nondiscrimination	statutes.	Such	operations	must	be	conducted	pursuant	to	certain	
on-site	security	regulations	and	other	permits	and	authorizations	issued	by	the	Bureau	of	Land	Management,	the	Bureau	
of	Ocean	Energy	Management,	the	Bureau	of	Safety	and	Environmental	Enforcement,	the	Bureau	of	Indian	Affairs,	and	
other	federal	and	state	stakeholder	agencies.

Environmental Regulations

Public	interest	in	the	protection	of	the	environment	has	increased	dramatically	in	recent	years.	Our	oil	and	natural	gas	
production,	saltwater	disposal	operations,	injection	of	CO2,	and	the	processing,	handling	and	disposal	of	materials	such	as	
hydrocarbons	and	naturally	occurring	radioactive	materials	(“NORM”)	are	subject	to	stringent	regulation.	We	could	incur	
significant	costs,	including	cleanup	costs	resulting	from	a	release	of	product,	third-party	claims	for	property	damage	and	
personal	injuries,	or	penalties	and	other	sanctions	as	a	result	of	any	violations	or	liabilities	under	environmental	or		
other	laws	applicable	to	our	operations.	Changes	in,	or	more	stringent	enforcement	of,	environmental	laws	and	other	laws	
applicable	to	our	operations	could	also	result	in	delays	or	additional	operating	costs	and	capital	expenditures.

 
 
 
 
 
Various	federal,	state	and	local	laws	and	regulations	controlling	the	discharge	of	materials	into	the	environment	or	
otherwise	relating	to	the	protection	of	the	environment	directly	impact	our	oil	and	gas	exploration,	development	and	
production	operations.	These	include,	among	others,	(1)	regulations	adopted	by	the	EPA	and	various	state	agencies	regarding	
approved	methods	of	disposal	for	certain	hazardous	and	nonhazardous	wastes;	(2)	the	Comprehensive	Environmental	
Response,	Compensation,	and	Liability	Act	and	analogous	state	laws	that	regulate	the	removal	or	remediation	of	
previously	disposed	wastes	(including	wastes	disposed	of	or	released	by	prior	owners	or	operators),	property	contamination	
(including	groundwater	contamination),	and	remedial	plugging	operations	to	prevent	future	contamination;	(3)	the	Clean	
Air	Act	and	comparable	state	and	local	requirements	already	applicable	to	our	operations	and	new	restrictions	on	air	
emissions	from	our	operations,	including	those	that	could	discourage	the	production	of	fossil	fuels	that,	when	used,	
ultimately	release	CO2;	(4)	the	Oil	Pollution	Act	of	1990,	which	contains	numerous	requirements	relating	to	the	prevention	
of,	and	response	to,	oil	spills	into	waters	of	the	United	States;	(5)	the	Resource	Conservation	and	Recovery	Act,	which	is	the	
principal	federal	statute	governing	the	treatment,	storage	and	disposal	of	hazardous	wastes;	(6)	the	Endangered	Species	
Act	and	counterpart	state	legislation,	which	protects	endangered	and	threatened	species	(and	their	related	habitats)	
including	certain	species,	which	could	be	present	on	our	leases,	as	threatened	or	endangered;	and	(7)	state	regulations	and	
statutes	governing	the	handling,	treatment,	storage	and	disposal	of	NORM.

Management	believes	that	we	are	in	material	compliance	with	applicable	environmental	laws	and	regulations.	

Management	does	not	currently	anticipate	that	future	compliance	will	have	a	materially	adverse	effect	on	our	
consolidated	financial	position,	results	of	operations	or	cash	flows,	although	such	laws	and	regulations,	and	compliance	
therewith,	could	cause	significant	delays	or	otherwise	impede	operations,	which	may	cause	our	expected	production	rates	
and	cash	flows	to	be	less	than	anticipated.

Hydraulic Fracturing

We	previously	used	a	hydraulic	fracturing	process	to	stimulate	production	in	our	Bakken	area	and	Selma	Chalk	

properties.	We	sold	our	Bakken	area	properties	during	the	fourth	quarter	of	2012	and	have	no	current	plans	to	hydraulically	
fracture	any	of	our	remaining	oil	and	gas	wells,	including	our	Selma	Chalk	properties,	during	2013.	During	2012,	we	
fracture	stimulated	41	operated	wells	in	the	Bakken	utilizing	water-based	fluids	with	no	diesel	fuel	component.	In	these	
operations,	we	are	cognizant	of	environmental	laws	and	continually	monitor	all	of	our	operations	for	possible	
environmental	impact.	During	2012,	we	derived	in	the	range	of	15%	to	20%	of	our	revenues	from	properties	that	have	been	
fracture	stimulated	at	some	point	in	the	useful	life	of	the	properties.

ESTIMATED NET QUANTITIES OF PROVED OIL AND NATURAL GAS RESERVES  
AND PRESENT VALUE OF ESTIMATED FUTURE NET REVENUES

Internal Controls Over Reserve Estimates

Reserve	information	in	this	report	is	based	on	estimates	prepared	by	DeGolyer	and	MacNaughton	(“D&M”),	an	

independent	petroleum	engineering	consulting	firm	located	in	Dallas,	Texas,	utilizing	data	provided	by	our	internal	reserve	
engineering	team	and	is	the	responsibility	of	management.	We	rely	on	D&M’s	expertise	to	ensure	that	our	reserve	
estimates	are	prepared	in	compliance	with	SEC	rules	and	regulations	and	that	appropriate	geologic,	petroleum	engineering,	
and	evaluation	principles	and	techniques	are	applied	in	accordance	with	practices	generally	recognized	by	the	petroleum	
industry	as	presented	in	the	publication	of	the	Society	of	Petroleum	Engineers	entitled	“Standards	Pertaining	to	the	
Estimating	and	Auditing	of	Oil	and	Gas	Reserves	Information	(Revision	as	of	February	19,	2007)”.	The	person	responsible	for	
the	preparation	of	the	reserve	report	is	a	Senior	Vice	President	at	D&M;	he	is	a	Registered	Professional	Engineer	in	the	
State	of	Texas;	he	received	a	Bachelor	of	Science	degree	in	Petroleum	Engineering	at	Texas	A&M	University	in	1974;	and	he	
has	in	excess	of	38	years	of	experience	in	oil	and	gas	reservoir	studies	and	evaluations.	Our	Senior	Vice	President	–	
Planning,	Technology	and	Business	Development	is	primarily	responsible	for	overseeing	the	independent	petroleum	
engineering	firm	during	the	process.	Our	Senior	Vice	President	–	Planning,	Technology	and	Business	Development		
has	a	Bachelor	of	Science	degree	in	Petroleum	Engineering	from	Louisiana	State	University	and	over	31	years	of	industry	
experience	working	with	petroleum	reserve	estimates.	D&M	relies	on	various	data	provided	by	our	internal	reserve	
engineering	team	in	preparing	their	reserve	estimates,	including	such	items	as	oil	and	natural	gas	prices,	ownership	
interests,	production	information,	operating	costs,	planned	capital	expenditures	and	other	technical	data.	Our	internal	
reserve	engineering	team	consists	of	qualified	petroleum	engineers	who	maintain	the	Company’s	internal	evaluation		
of	reserves	and	compare	the	Company’s	information	to	the	reserves	prepared	by	D&M.	Management	is	responsible	for	

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designing	the	internal	control	procedures	used	in	the	preparation	of	our	oil	and	gas	reserves,	which	include	verification	of	
data	input	into	reserve	forecasting	and	economics	evaluation	software,	as	well	as	multi-discipline	management	reviews.	
The	internal	reserve	team	reports	directly	to	our	Senior	Vice	President	–	Planning,	Technology	and	Business	Development.	
In	addition,	our	Board	of	Directors’	Reserves	and	Health,	Safety	and	Environment	(“HSE”)	Committee,	on	behalf	of	the	
Board	of	Directors,	oversees	the	qualifications,	independence,	performance	and	hiring	of	our	independent	petroleum	
engineering	firm	and	reviews	the	final	report	and	subsequent	reporting	of	our	oil	and	natural	gas	reserve	estimates.	The	
Chairman	of	the	Reserves	and	HSE	Committee	holds	a	Ph.D.	in	Chemical	Engineering	from	the	Massachusetts	Institute	of	
Technology	and	bachelor’s	degrees	in	Chemistry	and	Mathematics	from	Capital	University	in	Ohio.	He	has	33	years	of	
industry	experience,	with	responsibilities	including	reserves	preparation	and	approval.

Oil and Natural Gas Reserves Estimates

D&M	prepared	estimates	of	our	net	proved	oil	and	natural	gas	reserves	as	of	December	31,	2012,	2011	and	2010.	See	the	

summary	of	D&M’s	report	as	of	December	31,	2012,	included	as	an	exhibit	to	this	Form	10-K.	These	estimates	of	reserves	
were	prepared	using	an	average	price	equal	to	the	unweighted	arithmetic	average	of	hydrocarbon	prices	on	the	first	day	of	
each	month	within	the	12-month	period	in	accordance	with	rules	and	regulations	of	the	SEC.	These	oil	and	natural	gas	
reserve	estimates	do	not	include	any	value	for	probable	or	possible	reserves	that	may	exist,	nor	do	they	include	any	value	
for	undeveloped	acreage.	The	reserve	estimates	represent	our	net	revenue	interest	in	our	properties.	During	2012,	we	
provided	oil	and	gas	reserve	estimates	for	2011	to	the	United	States	Energy	Information	Agency,	which	were	substantially	
the	same	as	the	reserve	estimates	included	in	our	Form	10-K	for	the	year	ended	December	31,	2011.

Our	proved	nonproducing	reserves	primarily	relate	to	reserves	that	are	to	be	recovered	from	productive	zones	that	are	

currently	behind	pipe.	Since	a	majority	of	our	properties	are	in	areas	with	multiple	pay	zones,	these	properties	typically	
have	both	proved	producing	and	proved	nonproducing	reserves.

As	of	December	31,	2012,	our	estimated	proved	undeveloped	reserves	totaled	approximately	162.7	MMBOE,	or	

approximately	40%	of	our	estimated	total	proved	reserves,	a	decline	of	38.5	MMBOE	from	December	31,	2011	levels.	Our	
proved	undeveloped	oil	reserves	primarily	relate	to	our	CO2	tertiary	operations	(72.8	MMBOE)	and	our	proved	undeveloped	
natural	gas	reserves	are	primarily	located	in	our	Riley	Ridge	Field	(69.4	MMBOE)	acquired	in	2010	and	2011.	Our	December	
31,	2012	proved	undeveloped	reserves	also	include	10.5	MMBOE	of	proved	undeveloped	reserves	at	our	CCA	fields	acquired	
in	2010	and	7.4	MMBOE	of	proved	undeveloped	reserves	we	acquired	at	Thompson	Field	during	2012.	We	consider	the	CO2	
tertiary	proved	undeveloped	reserves	to	be	lower	risk	than	other	proved	undeveloped	reserves	that	require	drilling	at	
locations	offsetting	existing	production,	because	all	of	these	proved	undeveloped	reserves	are	associated	with	tertiary	
recovery	operations	in	fields	and	reservoirs	that	historically	produced	substantial	volumes	of	oil	under	primary	production.

During	2012,	we	spent	approximately	$875	million	to	convert	40.5	MMBOE	of	proved	undeveloped	reserves	to	proved	
developed	reserves.	Proved	undeveloped	reserves	were	converted	primarily	through	the	expansion	of	our	tertiary	floods	
(25.0	MMBOE)	and	through	additional	drilling	in	the	Bakken.	During	2012,	proved	undeveloped	reserve	additions	of		
89.1	MMBOE,	primarily	related	to	the	initial	recognition	of	reserves	associated	with	new	tertiary	floods	(62.6	MMBOE)	and	
the	acquisition	of	Thompson	Field	(7.4	MMBOE),	were	partially	offset	by	the	decrease	in	proved	undeveloped	reserves	
resulting	from	the	sale	of	our	Bakken	area	assets	(73.5	MMBOE).

As	of	December	31,	2012,	16.6	MMBOE	of	our	total	proved	undeveloped	reserves	are	not	scheduled	to	be	developed	within	

five	years	of	initial	booking,	all	of	which	are	part	of	CO2	EOR	projects.	We	believe	these	reserves	satisfy	the	conditions	to		
be	included	as	proved	reserves	because	(1)	we	have	established	and	continue	to	follow	the	previously	adopted	
development	plan	for	each	of	these	projects;	(2)	we	have	significant	ongoing	development	activities	in	each	of	these	CO2	
EOR	projects	and	(3)	we	have	an	historical	record	of	completing	the	development	of	comparable	long-term	projects.

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Estimated proved reserves (1)
	 Oil	(MBbls)		
	 Natural	gas	(MMcf)	
	 Oil	equivalent	(MBOE)	

Reserve volumes categories
	 Proved	developed	producing:

	 Oil	(MBbls)	
	 Natural	gas	(MMcf)	
	 Oil	equivalent	(MBOE)	

	 Proved	developed	non-producing:

	 Oil	(MBbls)	
	 Natural	gas	(MMcf)	
	 Oil	equivalent	(MBOE)	

	 Proved	undeveloped:

	 Oil	(MBbls)	
	 Natural	gas	(MMcf)	
	 Oil	equivalent	(MBOE)	

Percentage of total MBOE:
	 Proved	developed	producing	
	 Proved	developed	non-producing	 	
	 Proved	undeveloped	

Representative oil and natural gas prices: (2)
	 Oil	–	NYMEX	
	 Natural	gas	–	Henry	Hub	

Present values (thousands): (3)
	 Discounted	estimated	future	net	cash	flow		

	 before	income	taxes	(PV-10	Value)	(4)	

December 31,

2012 

2011 

2010

329,124	
481,641	
409,398	

208,745	
60,832	
218,884	

27,264	
3,359	
27,824	

93,115	
417,450	
162,690	

357,733	
625,208	
461,934	

189,904	
116,562	
209,331	

49,837	
9,408	
51,405	

117,992	
499,238	
201,198	

338,276
357,893
397,925

186,705
104,050
204,047

32,372
6,466
33,450

119,199
247,377
160,428

53%	
7%	
40%	

45%	
11%	
44%	

51%
9%
40%

$	

94.71	
2.85	

$	

96.19	
4.16	

$	

79.43
4.40

$	9,909,592	

$	10,559,139	

$	7,292,344

	 Standardized	measure	of	discounted	estimated	future	net	cash	flow	

	 after	income	taxes	(“Standardized	Measure”)	

$	6,414,380	

$	 7,007,605	

$	4,917,927

(1)	 Estimated	proved	reserves	as	of	December	31,	2012	reflect	the	sale	of	reserves	associated	with	our	Bakken	area	assets	sold	in	2012	(approximately	109	

MMBOE).	Year-end	2012	reserves	reflect	CCA	reserves	acquired	in	2010	as	part	of	the	Encore	Merger,	but	do	not	include	reserves	of	approximately	42	MMBOE	
related	to	the	Pending	CCA	Acquisition,	which	we	currently	expect	to	close	near	the	end	of	first	quarter	of	2013.

(2)	 The	reference	prices	were	based	on	the	average	first-day-of-the-month	prices	for	each	month	during	the	respective	year,	adjusted	for	differentials	by	field	to	

arrive	at	the	appropriate	net	price	we	receive.	See	Operating Results in Management’s Discussion and Analysis of Financial Condition and Results of 
Operations	for	details	of	oil	and	natural	gas	prices	received,	both	including	and	excluding	the	impact	of	derivative	settlements.

(3)	 Determined	based	on	the	average	first-day-of-the-month	prices	for	each	month,	adjusted	to	prices	received	by	field	in	accordance	with	standards	set	forth	in	

the	FASC.

(4)	 PV-10	Value	is	a	non-GAAP	measure	and	is	different	from	the	Standardized	Measure	in	that	PV-10	Value	is	a	pre-tax	number	and	the	Standardized	Measure	is	

an	after-tax	number.	The	information	used	to	calculate	PV-10	Value	is	derived	directly	from	data	determined	in	accordance	with	FASC	Topic	932.	The	difference	
between	these	two	amounts,	the	discounted	estimated	future	income	tax	(in	thousands)	was	$3,495,212	at	December	31,	2012,	$3,551,534	at	December	31,	2011,	
and	$2,374,417	at	December	31,	2010.	We	believe	that	PV-10	Value	is	a	useful	supplemental	disclosure	to	the	Standardized	Measure	because	the	Standardized	
Measure	can	be	impacted	by	a	company’s	unique	tax	situation,	and	it	is	not	practical	to	calculate	the	Standardized	Measure	on	a	property-by-property	basis.	
Because	of	this,	PV-10	Value	is	a	widely	used	measure	within	the	industry	and	is	commonly	used	by	securities	analysts,	banks	and	credit	rating	agencies	to	
evaluate	the	estimated	future	net	cash	flows	from	proved	reserves	on	a	comparative	basis	across	companies	or	specific	properties.	PV-10	Value	is	commonly	
used	by	us	and	others	in	our	industry	to	evaluate	properties	that	are	bought	and	sold	and	to	assess	the	potential	return	on	investment	in	our	oil	and	gas	
properties.	PV-10	Value	is	not	a	measure	of	financial	or	operating	performance	under	GAAP,	nor	should	it	be	considered	in	isolation	or	as	a	substitute	for	the	
Standardized	Measure.	Our	PV-10	Value	and	the	Standardized	Measure	do	not	purport	to	represent	the	fair	value	of	our	oil	and	natural	gas	reserves.	See	
Glossary and Selected Abbreviations	for	the	definition	of	“PV-10	Value”	and	see	Note	14,	Supplemental Oil and Natural Gas Disclosures (Unaudited),	to	the	
Consolidated	Financial	Statements	for	additional	disclosures	about	the	Standardized	Measure.

There	are	numerous	uncertainties	inherent	in	estimating	quantities	of	proved	oil	and	natural	gas	reserves	and	their	

values,	including	many	factors	beyond	our	control.	See	Item	1A,	Risk Factors – Estimating our reserves, production and 
future net cash flows is difficult to do with any certainty.	See	also	Note	14,	Supplemental Oil and Natural Gas Disclosures 
(Unaudited), to	the	Consolidated	Financial	Statements.

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Item 1A. Risk Factors

Oil and natural gas prices are volatile. A substantial decrease in oil and natural gas prices could adversely 
affect our financial results.

Our	future	financial	condition,	results	of	operations,	cash	flows	and	the	carrying	value	of	our	oil	and	natural	gas	

properties	depend	primarily	upon	the	prices	we	receive	for	our	oil	and	natural	gas	production.	Oil	and	natural	gas	prices	
historically	have	been	volatile	and	may	continue	to	be	volatile	in	the	future,	especially	given	current	world	geopolitical	
conditions.	Oil	and	natural	gas	prices	have	continued	their	volatility	between	year-end	2011	and	year-end	2012,	with	
NYMEX	oil	prices	per	Bbl	decreasing	7%,	and	NYMEX	natural	gas	prices	per	MMBtu	increasing	by	12%.	Future	decreases	in	
commodity	prices	could	require	us	to	record	full	cost	ceiling	test	write-downs.	The	amount	of	any	future	write-down	is	
difficult	to	predict	and	will	depend	upon	oil	and	natural	gas	prices,	the	incremental	proved	reserves	that	might	be	added	
during	each	period	and	additional	capital	spent.

Our	cash	flow	from	operations	is	highly	dependent	on	the	prices	that	we	receive	for	oil	and	natural	gas.	This	price	
volatility	also	affects	the	amount	of	our	cash	flow	available	for	capital	expenditures	and	our	ability	to	borrow	money	or	
raise	additional	capital.	Oil	prices	are	likely	to	affect	us	more	than	natural	gas	prices	because	oil	comprised	approximately	
93%	of	our	2012	production	and	80%	of	our	December	31,	2012	proved	reserves,	with	oil	being	an	even	larger	percentage		
of	our	current	production	and	future	potential	reserves	and	projects	due	to	our	primary	focus	on	tertiary	operations.

The	prices	for	oil	and	natural	gas	are	subject	to	a	variety	of	additional	factors	that	are	beyond	our	control.	These	factors	

include	the	supply	of,	and	demand	for,	these	commodities,	which	fluctuate	with	changes	in	market	and	economic	
conditions	and	other	factors,	including:

•	

•	

•	

the	level	of	worldwide	consumer	demand	for	oil	and	natural	gas;

the	domestic	and	foreign	supply	of	oil	and	natural	gas;

the	ability	of	the	members	of	the	Organization	of	Petroleum	Exporting	Countries	to	agree	to	and	maintain	oil	price	
and	production	controls;

•	 domestic	governmental	regulations	and	taxes;

•	

the	price	and	availability	of	alternative	fuel	sources;

•	 storage	levels	of	oil	and	natural	gas;

•	 weather	conditions,	including	hurricanes	and	tropical	storms	in	and	around	the	Gulf	of	Mexico	that	can	damage	oil	
and	natural	gas	facilities	and	delivery	systems	and	disrupt	operations,	and	winter	conditions	and	forest	fires	in	the	
Rocky	Mountains	that	can	delay	or	impede	operations;

•	 market	uncertainty;

•	 worldwide	political	events	and	conditions,	including	actions	taken	by	foreign	oil	and	gas	producing	nations;	and

•	 worldwide	economic	conditions.

These	factors	and	the	volatility	of	the	energy	markets	generally	make	it	extremely	difficult	to	predict	future	oil	and	
natural	gas	price	movements.	Also,	prices	for	oil	and	prices	for	natural	gas	do	not	necessarily	move	in	tandem.	Declines	in	
oil	and	natural	gas	prices	would	not	only	reduce	revenue,	but	could	reduce	the	amount	of	oil	and	natural	gas	that	we	can	
produce	economically.	If	the	oil	and	natural	gas	industry	experiences	significant	price	declines,	we	may,	among	other	
things,	be	unable	to	meet	our	financial	obligations	or	make	planned	expenditures.

Over	the	past	five	years	oil	prices	have	fluctuated	significantly,	reaching	record	highs	of	approximately	$145	per	Bbl	in	

July	2008,	declining	precipitously	during	the	last	half	of	2008,	and	ending	that	year	at	a	NYMEX	price	of	$44.60	per	Bbl.		
Oil	prices	then	reversed	course,	generally	increasing	through	the	past	several	years,	ending	2011	at	a	NYMEX	price	of	$98.83	
per	Bbl	and	ending	2012	at	a	NYMEX	price	of	$91.82	per	Bbl.	Due	to	the	volatility	of	oil	prices,	oil	prices	could	decline	to		
a	level	that	makes	our	tertiary	projects	uneconomical.	If	that	were	to	happen,	we	may	decide	to	suspend	future	expansion	
projects,	and	if	prices	were	to	drop	below	the	cash	break-even	point	for	an	extended	period	of	time,	we	may	decide	to	
shut-in	existing	production,	both	of	which	could	have	a	material	adverse	effect	on	our	operations.	We	may	also	be	required	
to	reduce	our	capital	expenditures	in	the	event	of	reduced	commodity	prices	to	reflect	the	reduced	cash	flow,	which	could	
reduce	or	eliminate	our	growth.	We	have	a	practice	of	hedging	approximately	15	to	24	months	(from	the	current	quarter)	of	

 
 
 
 
 
forecasted	production	to	mitigate	the	risks	associated	with	price	fluctuations	(see	Note	9,	Derivative Instruments and 
Hedging Activities,	to	the	Consolidated	Financial	Statements	for	details	regarding	our	commodity	derivative	contracts).	
As	of	February	21,	2013,	we	have	oil	commodity	derivative	contracts	in	place	covering	approximately	55,000	Bbls/d	during	
2013	and	50,000	Bbls/d	during	2014.	Since	operating	costs	do	not	decrease	as	quickly	as	commodity	prices,	it	is	difficult	to	
determine	a	precise	break-even	point	for	our	tertiary	projects.	Based	on	prior	history,	we	estimate	our	economic	break-even	
point	(before	corporate	overhead,	and	based	on	expenses	on	these	projects	at	current	oil	prices)	occurs	at	per	barrel	dollar	
costs	in	the	$40-per-barrel	range,	depending	on	the	specific	field	and	area.

The	prices	we	receive	for	our	crude	oil	often	do	not	correlate	with	NYMEX	prices.	The	prices	we	receive	for	our	crude	oil	

production	can	vary	from	NYMEX	oil	prices	depending	on,	among	other	factors,	the	quality	of	the	crude	oil	we	sell,		
the	location	of	our	crude	oil	production	and	the	related	markets	to	which	we	sell,	variations	in	prices	paid	based	upon	
different	indices	used,	and	the	pricing	contracts	and	indices	at	which	we	sell	production.	Our	NYMEX	differentials	on		
a	field-by-field	basis	over	the	last	few	years	have	ranged	from	approximately	$25	per	Bbl	above	NYMEX	to	approximately	
$25	per	Bbl	below	NYMEX.	On	a	corporate-wide	basis,	our	NYMEX	differentials	over	the	last	few	years	have	ranged		
from	approximately	$9	per	Bbl	above	NYMEX	oil	prices	to	approximately	$4	per	Bbl	below	NYMEX	oil	prices.	These	variances	
have	been	due	to	various	factors	and	are	difficult	to	forecast	or	anticipate,	but	they	have	a	direct	impact	on	the	net	oil	
price	we	receive.

Natural	gas	price	volatility	has	followed	a	different	path	during	the	last	few	years,	with	current	prices	depressed	as	a	
result	of	weak	demand	and	significant	natural	gas	storage	in	place,	leading	to	excess	gas	supply.	NYMEX	natural	gas	prices	
averaged	$4.40	per	MMBtu	during	2010,	$4.03	per	MMBtu	during	2011,	and	$2.82	per	MMBtu	during	2012,	and	ended	2012	at	
$3.35	per	MMBtu.	As	of	February	21,	2013,	we	do	not	have	any	natural	gas	commodity	derivative	contracts	in	place.

Our production will decline if our access to sufficient amounts of carbon dioxide is limited.

Our	long-term	growth	strategy	is	focused	on	our	CO2	tertiary	recovery	operations.	The	crude	oil	production	from	our	
tertiary	recovery	projects	depends	on	having	access	to	sufficient	amounts	of	CO2.	Our	ability	to	produce	this	oil	would	be	
hindered	if	our	supply	of	CO2	were	limited	due	to	problems	with	our	current	CO2	producing	wells	and	facilities,	including	
compression	equipment,	or	catastrophic	pipeline	failure.	Our	anticipated	future	crude	oil	production	is	also	dependent	on	
our	ability	to	increase	the	production	volumes	of	CO2	and	inject	adequate	amounts	of	CO2	into	the	proper	formation		
and	area	within	each	oil	field.	The	production	of	crude	oil	from	tertiary	operations	is	highly	dependent	on	the	timing,	
volumes	and	location	of	the	CO2	injections.	If	our	crude	oil	production	were	to	decline,	it	could	have	a	material	adverse	
effect	on	our	financial	condition,	results	of	operations	and	cash	flows.

Our planned tertiary operations and the related construction of necessary CO2 pipelines could be  
delayed by difficulties in obtaining pipeline rights-of-way, permits, or by the listing of certain species as 
threatened or endangered.

The	production	of	crude	oil	from	our	planned	tertiary	operations	is	also	dependent	upon	having	access	to	pipelines	to	
transport	available	CO2	to	our	oil	fields	at	a	cost	that	is	economically	viable.	Our	ongoing	construction	of	CO2	pipelines	will	
require	us	to	obtain	rights-of-way	not	only	from	private	landowners,	but	in	certain	areas,	from	the	federal	government	if	
the	proposed	pipelines	cross	federal	lands.	Certain	states	where	we	operate	are	considering	the	adoption	of	laws	and	
regulations	that	would	limit	or	eliminate	a	state’s	ability	to	exercise	eminent	domain	over	private	property,	in	addition	to	
possible	judicially	imposed	constraints	on,	and	additional	requirements	for,	the	exercise	of	eminent	domain.	We	also	
conduct	operations	on	federal	and	other	oil	and	natural	gas	leases	that	have	species,	such	as	the	sage	grouse,	that	could	
be	listed	as	threatened	or	endangered	under	the	Endangered	Species	Act,	which	could	lead	to	material	restrictions	as	to	
federal	land	use.	These	laws,	regulations	and	court	decisions,	together	with	any	other	changes	in	law	related	to	the	use	of	
eminent	domain	or	the	listing	of	certain	species	as	threatened	or	endangered,	could	inhibit	our	ability	to	secure	rights-of-
way	or	access	land	for	current	or	future	pipeline	construction	projects.	As	a	result,	obtaining	rights-of-way	may	require	
additional	regulatory	and	environmental	compliance	and	additional	expenditures,	which	could	delay	our	CO2	pipeline	
construction	schedule	and	initiation	of	operations	of	our	pipelines,	and/or	increase	the	costs	of	constructing	our	pipelines.

Our level of indebtedness may adversely affect operations and limit our growth.

If	we	are	unable	to	generate	sufficient	cash	flow	or	otherwise	obtain	funds	necessary	to	make	required	payments	on	our	

indebtedness,	or	if	we	otherwise	fail	to	comply	with	the	various	covenants	related	to	such	indebtedness,	including	
covenants	in	our	bank	credit	facility,	we	would	be	in	default	under	our	debt	instruments.	This	default	could	permit	the	
holders	of	such	indebtedness	to	accelerate	the	maturity	of	such	indebtedness	and	could	cause	defaults	under	other	

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indebtedness,	possibly	resulting	in	our	bankruptcy.	Our	ability	to	meet	our	obligations	will	depend	upon	our	future	
performance,	which	will	be	subject	to	prevailing	economic	conditions,	commodity	prices,	and	financial,	business	and	other	
factors,	including	factors	beyond	our	control.

As	of	February	21,	2013,	we	had	outstanding	$2.9	billion	(principal	amount)	of	subordinated	notes	at	interest	rates	

ranging	from	4.625%	to	9.75%	at	a	weighted	average	interest	rate	of	6.61%	and	no	amounts	outstanding	under	our	bank	
credit	facility.	We	currently	have	a	borrowing	base	of	$1.6	billion	under	our	bank	credit	facility,	and	at	February	21,	2013,	
nearly	all	of	this	amount	was	available	on	such	facility.	The	next	regularly	scheduled	semiannual	redetermination	of	the	
borrowing	base	for	our	bank	credit	facility	will	be	in	May	2013.	Our	bank	borrowing	base	is	adjusted	at	the	banks’	
discretion	and	is	based	in	part	upon	external	factors,	such	as	commodity	prices,	over	which	we	have	no	control.	If	our	then	
redetermined	borrowing	base	is	less	than	our	outstanding	borrowings	under	the	facility,	we	will	be	required	to	repay	the	
deficit	over	a	period	not	to	exceed	four	months.

We	may	incur	additional	indebtedness	in	the	future	under	our	bank	credit	facility	in	connection	with	our	acquisition,	

development,	exploitation	and	exploration	of	oil	and	natural	gas	producing	properties.	Further,	our	cash	flow	from	
operations	is	highly	dependent	on	the	prices	that	we	receive	for	oil	and	natural	gas.	If	oil	and	natural	gas	prices	again	
decrease	and	remain	at	depressed	levels	for	an	extended	period	of	time,	our	degree	of	leverage	could	increase	
substantially.	The	level	of	our	indebtedness	could	have	important	consequences,	including	but	not	limited	to	the	following:

•	 a	substantial	portion	of	our	cash	flows	from	operations	may	be	dedicated	to	servicing	our	indebtedness	and	would	

not	be	available	for	capital	expenditures	or	other	purposes;

•	 our	level	of	indebtedness	may	impair	our	ability	to	obtain	additional	financing	in	the	future	for	working	capital,	

capital	expenditures,	acquisitions	or	general	corporate	and	other	purposes;

•	 our	interest	expense	may	increase	in	the	event	of	increases	in	market	interest	rates,	because	bank	borrowings	are	at	

variable	rates	of	interest;

•	 our	vulnerability	to	general	adverse	economic	and	industry	conditions	may	be	greater	as	a	result	of	our	level	of	

indebtedness,	and	increases	in	interest	rates	thereon,	potentially	restricting	us	from	making	acquisitions,	introducing	
new	technologies	or	exploiting	business	opportunities;

•	 our	ability	to,	among	other	things,	borrow	additional	funds,	dispose	of	assets,	pay	dividends	and	make	certain	

investments	may	be	limited	by	the	covenants	contained	in	the	agreements	governing	our	outstanding	indebtedness;	and

•	 our	debt	covenants	may	also	affect	our	flexibility	in	planning	for,	and	reacting	to,	changes	in	the	economy	and	in	our	
industry.	Our	failure	to	comply	with	such	covenants	could	result	in	an	event	of	default	under	such	debt	instruments	
which,	if	not	cured	or	waived,	could	have	a	material	adverse	effect	on	us.

Product price derivative contracts may expose us to potential financial loss.

To	reduce	our	exposure	to	fluctuations	in	the	prices	of	oil	and	natural	gas,	we	currently,	and	may	in	the	future,	enter	into	

derivative	contracts	in	order	to	economically	hedge	a	portion	of	our	oil	and	natural	gas	production.	Derivative	contracts	
expose	us	to	risk	of	financial	loss	in	some	circumstances,	including	when:

•	 production	is	less	than	expected;

•	

•	

the	counterparty	to	the	derivative	contract	defaults	on	its	contract	obligations;	or

there	is	a	change	in	the	expected	differential	between	the	underlying	price	in	the	hedging	agreement	and	actual	
prices	received.

In	addition,	these	derivative	contracts	may	limit	the	benefit	we	would	receive	from	increases	in	the	prices	for	oil	and	

natural	gas.	Information	as	to	these	activities	is	set	forth	under	Item	7. Market Risk Management	in	Management’s	
Discussion	and	Analysis	of	Financial	Condition	and	Results	of	Operations,	and	in	Note	9,	Derivative Instruments and 
Hedging Activities, to	the	Consolidated	Financial	Statements.

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A worldwide financial downturn or negative credit market conditions may have lasting effects on our liquidity, 
business and financial condition that we cannot predict.

Liquidity	is	essential	to	our	business.	Our	liquidity	could	be	substantially	negatively	affected	by	an	inability	to	obtain	

capital	in	the	long-term	or	short-term	debt	capital	markets	or	equity	capital	markets	or	an	inability	to	access	bank	
financing.	A	prolonged	credit	crisis,	including	the	sovereign	debt	crisis	in	Europe	and	related	turmoil	in	the	global	financial	
system,	could	materially	affect	our	liquidity,	business	and	financial	condition.	These	conditions	have	adversely	impacted	
financial	markets	and	have	created	substantial	volatility	and	uncertainty,	and	may	continue	to	do	so,	with	the	related	
negative	impact	on	global	economic	activity	and	the	financial	markets.	Negative	credit	market	conditions	could	materially	
affect	our	liquidity	and	may	inhibit	our	lenders	from	fully	funding	our	bank	credit	facility	or	cause	them	to	make	the	terms	
of	our	bank	credit	facility	more	costly	and	more	restrictive.	We	are	subject	to	semiannual	reviews,	as	well	as	unscheduled	
reviews,	of	our	borrowing	base	under	our	bank	credit	facility,	and	we	do	not	know	the	results	of	future	redeterminations	or	
the	effect	of	then-current	oil	and	natural	gas	prices	on	that	process.	The	economic	situation	could	also	adversely	affect	the	
collectability	of	our	trade	receivables	or	performance	by	our	suppliers	and	cause	our	commodity	hedging	arrangements	to	
be	ineffective	if	our	counterparties	are	unable	to	perform	their	obligations	or	seek	bankruptcy	protection.	Additionally,	
negative	economic	conditions	could	lead	to	reduced	demand	for	oil	and	natural	gas,	or	lower	prices	for	oil	and	natural	gas,	
which	could	have	a	negative	impact	on	our	revenues.

Our future performance depends upon our ability to find or acquire additional oil and natural gas reserves that 
are economically recoverable.

Unless	we	can	successfully	replace	the	reserves	that	we	produce,	our	reserves	will	decline,	resulting	eventually	in	a	
decrease	in	oil	and	natural	gas	production	and	lower	revenues	and	cash	flows	from	operations.	We	have	historically	
replaced	reserves	through	both	acquisitions	and	internal	organic	growth	activities.	In	the	future,	we	may	not	be	able	to	
continue	to	replace	reserves	at	acceptable	costs.	The	business	of	exploring	for,	developing	or	acquiring	reserves	is	
capital	intensive.	We	may	not	be	able	to	make	the	necessary	capital	investment	to	maintain	or	expand	our	oil	and	
natural	gas	reserves	if	our	cash	flows	from	operations	are	reduced,	due	to	lower	oil	or	natural	gas	prices	or	otherwise,	or	
if	external	sources	of	capital	become	limited	or	unavailable.	Further,	the	process	of	using	CO2	for	tertiary	recovery	and	
the	related	infrastructure	requires	significant	capital	investment,	up	to	four	or	five	years	prior	to	any	resulting	
production	and	cash	flows	from	these	projects,	heightening	potential	capital	constraints.	If	we	do	not	continue	to	make	
significant	capital	expenditures,	or	if	outside	capital	resources	become	limited,	we	may	not	be	able	to	maintain	our	
growth	rate	or	meet	expectations.

During	the	last	few	years,	we	have	acquired	several	fields	at	a	significant	cost	because	we	believe	that	they	have	significant	

additional	potential	through	tertiary	flooding;	we	paid	a	premium	price	for	these	properties	based	on	that	assumption.		
In	addition,	we	plan	to	continue	acquiring	other	oil	fields	that	we	believe	are	tertiary	flood	candidates.	We	are	investing	
significant	amounts	of	capital	as	part	of	this	strategy.	If	we	are	unable	to	successfully	develop	the	potential	oil	in	these	
acquired	fields,	it	would	negatively	affect	the	return	on	our	investment	on	these	acquisitions	and	could	severely	reduce	our	
ability	to	obtain	additional	capital	for	the	future,	fund	future	acquisitions,	and	negatively	affect	our	financial	results	to	a	
significant	degree.

Oil and natural gas drilling and producing operations involve various risks.

Drilling	activities	are	subject	to	many	risks,	including	the	risk	that	new	wells	drilled	by	us	will	not	discover	commercially	

productive	reservoirs	or	the	risk	that	we	will	not	recover	all	or	any	portion	of	our	investment	in	such	wells.	Drilling	for	oil	
and	natural	gas	may	involve	unprofitable	efforts,	not	only	from	dry	wells	but	also	from	wells	that	are	productive	but	do	
not	produce	sufficient	net	reserves	to	return	a	profit	after	deducting	drilling,	operating	and	other	costs.	The	cost	of	drilling,	
completing	and	operating	a	well	is	often	uncertain,	and	cost	factors	can	adversely	affect	the	economics	of	a	project.	
Further,	our	drilling	operations	may	be	curtailed,	delayed	or	canceled	as	a	result	of	numerous	factors,	including:

•	 unexpected	drilling	conditions;

•	

title	problems;

•	 pressure	or	irregularities	in	formations;

•	 equipment	failures	or	accidents;

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•	 adverse	weather	conditions,	including	hurricanes	and	tropical	storms	in	and	around	the	Gulf	of	Mexico	that	can	

damage	oil	and	natural	gas	facilities	and	delivery	systems	and	disrupt	operations,	and	winter	conditions	and	forest	
fires	in	the	Rocky	Mountain	region	that	can	delay	or	impede	operations;

•	 compliance	with	environmental	and	other	governmental	requirements;	and

•	 cost	of,	or	shortages	or	delays	in	the	availability	of,	drilling	rigs,	equipment,	pipelines	and	services.

Our	operations	are	subject	to	all	the	risks	normally	incident	to	the	operation	and	development	of	oil	and	natural	gas	
properties	and	the	drilling	of	oil	and	natural	gas	wells,	including	encountering	well	blowouts,	cratering	and	explosions,	
pipe	failure,	fires,	formations	with	abnormal	pressures,	uncontrollable	flows	of	oil,	natural	gas,	brine	or	well	fluids,	release	
of	contaminants	into	the	environment	and	other	environmental	hazards	and	risks.

The	nature	of	these	risks	is	such	that	some	liabilities	could	exceed	our	insurance	policy	limits,	or,	as	in	the	case	of	
environmental	fines	and	penalties,	cannot	be	insured.	We	could	incur	significant	costs	related	to	these	risks	that	could	
have	a	material	adverse	effect	on	our	results	of	operations,	financial	condition	and	cash	flows.

Our	CO2	tertiary	recovery	projects	require	a	significant	amount	of	electricity	to	operate	the	facilities.	If	these	costs	were	
to	increase	significantly,	it	could	have	an	adverse	effect	upon	the	profitability	of	these	operations.	Additionally,	a	portion	
of	our	production	activities	involve	CO2	injections	into	fields	with	wells	plugged	and	abandoned	by	prior	operators.	It	is	
often	difficult	to	determine	whether	a	well	has	been	properly	plugged	prior	to	commencing	injections	and	pressuring	the	
oil	reservoirs.	If	wells	have	not	been	properly	plugged,	we	will	have	to	modify	the	wells,	which	can	increase	costs,	delay	our	
operations	and	reduce	our	production.

Certain of our operations may be limited during certain periods due to severe weather conditions and  
other regulations.

Certain	of	our	operations	in	North	Dakota,	Montana	and	Wyoming	are	conducted	in	areas	subject	to	extreme	weather	

conditions	and	often	in	difficult	terrain.	As	a	result,	our	operations	may	be	delayed	because	of	cold,	snow	and	wet	
conditions,	and	certain	operations	may	be	practical	only	during	non-winter	months.	Unusually	severe	weather	could	delay	
certain	of	these	operations,	including	the	construction	of	CO2	pipelines,	the	drilling	of	new	wells	and	production	from	
existing	wells,	and	depending	on	the	severity	of	the	weather,	could	have	a	negative	effect	on	our	results	of	operations	in	
this	region.	Further,	certain	of	our	operations	are	limited	to	certain	time	periods	due	to	environmental	regulations,	which	
can	slow	down	our	operations,	cause	delays	and	have	a	negative	effect	on	our	results	of	operations.

Shortages of oil field equipment, services and qualified personnel could reduce our cash flow and adversely 
affect results of operations.

The	demand	for	qualified	and	experienced	field	personnel	to	drill	wells	and	conduct	field	operations,	geologists,	
geophysicists,	engineers	and	other	professionals	in	the	oil	and	natural	gas	industry	can	fluctuate	significantly,	often	in	
correlation	with	oil	and	natural	gas	prices,	causing	periodic	shortages	in	such	personnel.	In	recent	years,	the	competition	
for	qualified	technical	personnel	has	been	extensive	and	our	personnel	costs	have	been	escalating	at	a	rate	higher	than	
general	inflation.	During	periods	of	high	oil	and	natural	gas	prices,	we	have	experienced	shortages	of	equipment	used	in	
our	tertiary	facilities,	drilling	rigs	and	other	equipment,	as	demand	for	rigs	and	equipment	has	increased	along	with	higher	
commodity	prices.	Higher	oil	and	natural	gas	prices	generally	stimulate	increased	demand	and	result	in	increased	prices	
for	drilling	rigs,	crews	and	associated	supplies,	oilfield	equipment	and	services,	and	personnel	in	our	exploration	and	
production	operations.	These	types	of	shortages	or	price	increases	could	significantly	decrease	our	profit	margin,	cash	flow	
and	operating	results	and/or	restrict	or	delay	our	ability	to	drill	those	wells	and	conduct	those	operations	that	we	
currently	have	planned	and	budgeted,	causing	us	to	miss	our	forecasts	and	projections.

Governmental laws and regulations relating to environmental protection are costly and stringent.

Our	exploration,	production,	and	marketing	operations	are	subject	to	complex	and	stringent	federal,	state,	and	local	

laws	and	regulations	governing,	among	other	things,	the	discharge	of	substances	into	the	environment	or	otherwise	
relating	to	environmental	protection.	These	laws	and	regulations	affect	the	costs,	manner,	and	feasibility	of	our	operations	
and	require	us	to	make	significant	expenditures	in	our	efforts	to	comply.	Failure	to	comply	with	these	laws	and	regulations	
may	result	in	the	assessment	of	administrative,	civil,	and	criminal	penalties,	the	imposition	of	investigatory	and	
remedial	obligations,	and	the	issuance	of	injunctions	that	could	limit	or	prohibit	our	operations.	In	addition,	some	of	these	
laws	and	regulations	may	impose	joint	and	several,	strict	liability	for	contamination	resulting	from	spills,	discharges,	and	

 
 
 
 
 
releases	of	substances,	including	petroleum	hydrocarbons	and	other	wastes,	without	regard	to	fault	or	the	legality	of	the	
original	conduct.	Under	such	laws	and	regulations,	we	could	be	required	to	remove	or	remediate	previously	disposed	
substances	and	property	contamination,	including	wastes	disposed	or	released	by	prior	owners	or	operators.	Changes	in	or	
additions	to	environmental	laws	and	regulations	occur	frequently,	and	any	changes	or	additions	that	result	in	more	
stringent	and	costly	waste	handling,	storage,	transport,	disposal,	or	cleanup	or	other	environmental	protection	
requirements	could	have	a	material	adverse	effect	on	our	operations	and	financial	position.

Enactment of legislative or regulatory proposals under consideration could negatively affect our business.

Numerous	legislative	and	regulatory	proposals	affecting	the	oil	and	gas	industry	have	been	introduced,	are	anticipated	

to	be	introduced	or	are	otherwise	under	consideration	by	Congress	and	various	federal	agencies.	Among	these	proposals	
are:	(1)	climate	change/carbon	tax	legislation	introduced	in	Congress	and	EPA	regulations	to	reduce	greenhouse	gas	
emissions,	including	an	EPA	proposal	to	apply	New	Source	Performance	Standards	for	petroleum	refineries	expected	in	
2013;	(2)	proposals	contained	in	the	President’s	budget,	along	with	legislation	introduced	in	Congress,	none	of	which	have	
passed	Congress,	to	impose	new	taxes	on,	or	repeal	various	tax	deductions	available	to,	oil	and	gas	producers,	such	as	the	
current	tax	deductions	for	intangible	drilling	and	development	costs	and	qualified	tertiary	injectant	expenses	which,	if	
eliminated,	could	raise	the	cost	of	energy	production,	reduce	energy	investment	and	affect	the	economics	of	oil	and	gas	
exploration	and	production	activities;	(3)	legislation	previously	considered	by	Congress	(but	not	adopted)	that	would	
subject	the	process	of	hydraulic	fracturing	to	federal	regulation	under	the	Safe	Drinking	Water	Act	and	new	or	anticipated	
Department	of	Interior	and	EPA	regulations	to	require	disclosure	of	the	chemicals	used	in	the	fracturing	process;	and		
(4)	the	Pipeline	Safety,	Regulatory	Certainty,	and	Job	Creation	Act	enacted	in	2011,	which	increases	penalties,	grants	new	
authority	to	impose	damage	prevention	and	incident	notification	requirements,	and	directs	the	Department	of	
Transportation	to	prescribe	minimum	safety	standards	for	CO2	pipelines,	any	of	which	could	affect	our	operations,	and	the	
costs	thereof.	Generally,	any	future	laws	and	regulations	could	result	in	increased	costs	or	additional	operating	restrictions	
and	could	have	an	effect	on	demand	for	oil	and	natural	gas	or	prices	at	which	it	can	be	sold.	However,	until	such	legislation	
or	regulations	are	enacted	or	adopted	into	law	and	implemented,	it	is	not	possible	to	gauge	their	impact	on	our	future	
operations	or	our	results	of	operations	and	financial	condition.

Certain federal income tax deductions currently available with respect to natural gas and oil exploration  
and development may be eliminated, and additional state taxes on natural gas extraction may be imposed,  
as a result of future legislation.

In	recent	years,	legislation	has	been	proposed	that	would,	if	enacted	into	law,	make	significant	changes	to	U.S.	federal	
income	tax	laws,	including	the	elimination	of	certain	U.S.	federal	income	tax	benefits	and	deductions	currently	available	to	
oil	and	gas	companies.	Such	changes	include,	but	are	not	limited	to,	(1)	the	repeal	of	the	percentage	depletion	allowance	
for	oil	and	gas	properties,	(2)	the	increase	of	the	amortization	period	of	geological	and	geophysical	expenses,	(3)	the	
elimination	of	current	deductions	for	intangible	drilling	and	development	costs	and	qualified	tertiary	injectant	expenses,	
and	(4)	the	elimination	of	the	deduction	for	certain	U.S.	production	activities.	It	is	unclear	whether	any	such	proposals	will	
be	enacted	into	law	and,	if	so,	what	form	such	laws	might	possibly	take.	The	passage	of	such	legislation	or	any	other	
similar	change	in	U.S.	federal	income	tax	law	could	eliminate,	reduce	or	postpone	certain	tax	deductions	that	are	currently	
available	to	us,	and	any	such	change	could	negatively	affect	our	financial	condition	and	results	of	operations.

The recent adoption of derivatives legislation by the U.S. Congress could have an adverse effect on our ability to 
hedge risks associated with our business.

The	Dodd-Frank	Act	requires	the	Commodities	Futures	Trading	Commission,	and	the	SEC	to	promulgate	rules	and	

regulations	establishing	federal	oversight	and	regulation	of	the	over-the-counter	derivatives	market	and	entities	that	
participate	in	that	market.	These	new	rules	and	regulations	could	significantly	increase	the	cost	or	decrease	the	liquidity		
of	energy-related	derivatives	we	use	to	hedge	against	commodity	price	fluctuations.	Although	we	believe	the	derivative	
contracts	that	we	enter	into	should	not	be	materially	impacted	by	these	new	statutory	and	regulatory	requirements,	
because	derivatives	regulations	have	not	been	finalized,	final	regulations	could	negatively	affect	to	our	detriment	the	
economics	and	terms	of	derivative	instruments	available	from	counterparties	in	the	marketplace.

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The loss of more than one of our large oil and natural gas purchasers could have a material adverse effect on 
our operations.

For	the	year	ended	December	31,	2012,	two	purchasers	individually	accounted	for	10%	or	more	of	our	oil	and	natural	gas	
revenues	and,	in	the	aggregate,	for	56%	of	such	revenues.	The	loss	of	a	large	single	purchaser	could	potentially	reduce	the	
competition	for	our	oil	and	natural	gas	production,	which	in	turn	could	negatively	impact	the	prices	we	receive.

Estimating our reserves, production and future net cash flows is difficult to do with any certainty.

Estimating	quantities	of	proved	oil	and	natural	gas	reserves	is	a	complex	process.	It	requires	interpretations	of	available	

technical	data	and	various	assumptions,	including	assumptions	relating	to	economic	factors	such	as	future	commodity	
prices,	production	costs,	severance	and	excise	taxes,	capital	expenditures	and	workover	and	remedial	costs,	and	the	
assumed	effect	of	governmental	regulation.	There	are	numerous	uncertainties	about	when	a	property	may	have	proved	
reserves	as	compared	to	potential	or	probable	reserves,	particularly	relating	to	our	tertiary	recovery	operations.	
Forecasting	the	amount	of	oil	reserves	recoverable	from	tertiary	operations	and	the	production	rates	anticipated	
therefrom	requires	estimates,	one	of	the	most	significant	being	the	oil	recovery	factor.	Actual	results	most	likely	will	vary	
from	our	estimates.	Also,	the	use	of	a	10%	discount	factor	for	reporting	purposes,	as	prescribed	by	the	SEC,	may	not	
necessarily	represent	the	most	appropriate	discount	factor,	given	actual	interest	rates	and	risks	to	which	our	business	or	
the	oil	and	natural	gas	industry	in	general	are	subject.	Any	significant	inaccuracies	in	these	interpretations	or	assumptions	
or	changes	of	conditions	could	result	in	a	reduction	of	the	quantities	and	net	present	value	of	our	reserves.

The	reserve	data	included	in	documents	incorporated	by	reference	represent	only	estimates.	Quantities	of	proved	

reserves	are	estimated	based	on	economic	conditions,	including	first-day-of-the-month	average	oil	and	natural	gas	prices	
for	the	12-month	period	preceding	the	date	of	the	assessment.	Our	reserves	and	future	cash	flows	may	be	subject	to	
revisions	based	upon	changes	in	economic	conditions,	including	oil	and	natural	gas	prices,	as	well	as	due	to	production	
results,	results	of	future	development,	operating	and	development	costs,	and	other	factors.	Downward	revisions	of	our	
reserves	could	have	an	adverse	effect	on	our	financial	condition,	operating	results	and	cash	flows.	Actual	future	prices	and	
costs	may	be	materially	higher	or	lower	than	the	prices	and	cost	used	in	the	estimate.

As	of	December	31,	2012,	approximately	40%	of	our	estimated	proved	reserves	were	undeveloped.	Recovery	of	

undeveloped	reserves	requires	significant	capital	expenditures	and	may	require	successful	drilling	operations.	The	reserve	
data	assumes	that	we	can	and	will	make	these	expenditures	and	conduct	these	operations	successfully,	but	these	
assumptions	may	not	be	accurate,	and	these	expenditures	and	operations	may	not	occur.

Significant acquisitions or other transactions could require substantial external capital and could change our 
risk and property profile.

To	finance	acquisitions,	we	may	need	to	substantially	alter	or	increase	our	capitalization	through	the	use	of	our	bank	
credit	facility,	the	issuance	of	debt	or	equity	securities,	the	sale	of	production	payments,	or	by	other	means.	Such	changes	
in	capitalization	could	significantly	affect	our	risk	profile.	Additionally,	significant	acquisitions	or	other	transactions	can	
change	the	character	of	our	operations	and	business.	The	character	of	the	new	properties	may	be	substantially	different	in	
operating	or	geological	characteristics	or	geographic	location	from	that	of	our	existing	properties.

Our results of operations could be negatively affected as a result of goodwill impairments.

Goodwill	represents	the	excess	of	the	purchase	price	over	the	estimated	fair	value	of	the	net	assets	acquired	in	the	
acquisition	of	a	business.	At	December	31,	2012,	the	Company’s	goodwill	balance	totaled	$1.3	billion	and	represented	
approximately	11.5%	of	our	total	assets.	Goodwill	is	not	amortized;	rather	it	is	tested	for	impairment	annually	during	the	
fourth	quarter	and	when	facts	or	circumstances	indicate	that	the	carrying	value	of	the	Company’s	goodwill	may	be	
impaired,	requiring	an	estimate	of	the	fair	values	of	the	reporting	unit’s	assets	and	liabilities.	An	impairment	of	goodwill	
could	significantly	reduce	earnings	during	the	period	in	which	the	impairment	occurs	and	would	result	in	a	corresponding	
reduction	to	goodwill	and	equity.	See	Item	7	–	Management’s Discussion and Analysis of Financial Condition and Results  
of Operations – Critical Accounting Policies and Estimates – Impairment Assessment of Goodwill.

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We may lose executive officers or other key management personnel, which could endanger the future success of 
our operations.

Our	success	depends	to	a	significant	degree	upon	the	continued	contributions	of	our	executive	officers	and	other	key	
management	personnel.	Our	employees,	including	our	executive	officers,	are	employed	at	will	and	do	not	have	employment	
agreements.	If	one	or	more	members	of	our	management	team	dies,	becomes	disabled	or	voluntarily	terminates	
employment	with	us,	there	is	no	assurance	that	we	will	find	a	suitable	or	comparable	substitute.	We	believe	that	our	future	
success	depends,	in	large	part,	upon	our	ability	to	hire	and	retain	highly	skilled	managerial	personnel.	Competition	for	
persons	with	these	skills	is	intense,	and	we	cannot	assure	that	we	will	be	successful	in	attracting	and	retaining	such	skilled	
personnel.	The	loss	of	any	of	our	management	personnel	could	adversely	affect	our	operations.

A cyber incident could occur and result in information theft, data corruption, operational disruption, and/or 
financial loss.

Our	business	has	become	increasingly	dependent	on	digital	technologies	to	conduct	day-to-day	operations,	including	
certain	of	our	exploration,	development	and	production	activities.	We	depend	on	digital	technology	to	estimate	quantities	
of	oil	and	gas	reserves,	process	and	record	financial	and	operating	data,	analyze	seismic	and	drilling	information	and		
in	many	other	activities	related	to	our	business.	Our	technologies,	systems	and	networks	may	become	the	target	of	
cyber-attacks	or	information	security	breaches	that	could	result	in	the	disruption	of	our	business	operations.	For	example,	
unauthorized	access	to	our	seismic	data,	reserves	information	or	other	proprietary	information	could	lead	to	data	
corruption,	communication	interruption,	or	other	operational	disruptions	in	our	drilling	or	production	operations.

To	date	we	have	not	experienced	any	material	losses	relating	to	cyber-attacks,	however	there	can	be	no	assurance	that	
we	will	not	suffer	such	losses	in	the	future.	As	cyber	threats	continue	to	evolve,	we	may	be	required	to	expend	significant	
additional	resources	to	continue	to	modify	or	enhance	our	protective	measures	or	to	investigate	and	remediate	any	
cyber-vulnerabilities.

Item 1B. Unresolved Staff Comments

There	are	no	unresolved	written	SEC	staff	comments	regarding	our	periodic	or	current	reports	under	the	Securities	

Exchange	Act	of	1934	received	180	days	or	more	before	the	end	of	the	fiscal	year	to	which	this	annual	report	on	Form	
10-K	relates.

Item 2. Properties

Information	regarding	the	Company’s	properties	called	for	by	this	item	is	included	in	Item	1,	Business and Properties –  
Oil and Natural Gas Operations. We	also	have	various	operating	leases	for	rental	of	office	space,	office	and	field	equipment,	
and	vehicles.	See	Off-Balance Sheet Agreements – Commitments and Obligations	in	Management’s Discussion and 
Analysis of Financial Condition and Results of Operations,	and	Note	11,	Commitments and Contingencies,	to	the	Consolidated	
Financial	Statements	for	the	future	minimum	rental	payments.	Such	information	is	incorporated	herein	by	reference.

Item 3. Legal Proceedings

We	are	involved	in	various	lawsuits,	claims	and	regulatory	proceedings	incidental	to	our	businesses.	While	we	currently	
believe	that	the	ultimate	outcome	of	these	proceedings,	individually	and	in	the	aggregate,	will	not	have	a	material	adverse	
effect	on	our	financial	position	or	overall	trends	in	results	of	operations	or	cash	flows,	litigation	is	subject	to	inherent	
uncertainties.	If	an	unfavorable	ruling	in	one	of	these	lawsuits	were	to	occur,	there	exists	the	possibility	of	a	material	
adverse	impact	on	our	net	income	in	the	period	in	which	the	ruling	occurs.	We	provide	accruals	for	litigation	and	claims	if	
we	determine	that	we	may	have	a	range	of	legal	exposure	that	would	require	accrual.

Item 4. Mine Safety Disclosures

Not	applicable.

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Item 5. Market for Registrant’s Common Equity,  
Related Stockholder Matters and Issuer Purchases of Equity Securities

Common Stock Trading Summary

The	following	table	summarizes	the	high	and	low	reported	sales	prices	on	days	in	which	there	were	trades	of	Denbury’s	

common	stock	on	the	New	York	Stock	Exchange	(“NYSE”)	for	each	quarterly	period	for	the	last	two	fiscal	years.	As	of	
January	31,	2013,	based	on	information	from	the	Company’s	transfer	agent,	American	Stock	Transfer	and	Trust	Company,	
the	number	of	holders	of	record	of	Denbury’s	common	stock	was	1,643.	On	February	27,	2013,	the	last	reported	sale	price	of	
Denbury’s	common	stock,	as	reported	on	the	NYSE,	was	$17.99	per	share.

First	Quarter	 	
Second	Quarter	
Third	Quarter		
Fourth	Quarter	

2012 

2011 

High 

$	20.91	
	 19.50	
	 17.65	
	 16.76	

Low 

$	16.29	
	 13.46	
	 13.74	
	 14.32	

High 

$	24.56	
	 24.86	
	 20.85	
	 17.45	

Low

$	18.45
	 18.70
	 11.50
	 10.86

We	have	never	paid	any	dividends	on	our	common	stock.	Also,	our	bank	credit	facility	limits	the	aggregate	amount	of		
(i)	dividends	we	can	pay	on	our	common	stock	and	(ii)	our	common	stock	we	can	repurchase.	Under	our	bank	credit	facility,	
we	had	$679.0	million	available	as	of	February	21,	2013	that	can	be	used	to	pay	dividends	or	repurchase	shares	of	
Denbury’s	common	stock.	No	unregistered	securities	were	sold	by	the	Company	during	2012.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Month 

October	2012	 	
November	2012	
December	2012	
Total	

Total Number  
of Shares  
Purchased  

	 2,138,550	
	 6,052,120	
	 6,340,742	
	14,531,412	

Average 
Price Paid  Announced Plans  
per Share 

or Programs 

$	16.35	
	 15.03	
	 15.83	
	 15.57	

	 2,133,910	
	 6,018,276	
	 6,332,387	
	14,484,573	

or Programs
(in millions)(1)

$	228.8
	 409.5
	 309.3	(2)
	 309.3

Approximate
Dollar Value of
Shares that May
Total Number of 
Shares Purchased  Yet Be Purchased
as Part of Publicly  Under the Plans

(1)	 In	October	2011,	the	Company’s	Board	of	Directors	approved	a	common	stock	repurchase	program	for	up	to	$500	million	of	Denbury’s	common	stock,	which	

was	increased	by	an	additional	$271.2	million	in	early	November	2012.

(2)	 Amounts	shown	do	not	give	effect	to	the	repurchase	of	an	additional	3.5	million	shares	of	Denbury	common	stock	from	January	1,	2013	through	February	21,	

2013	under	the	share	repurchase	program	for	$59.1	million,	or	$16.73	per	share.

Between	early	October	2011,	when	we	announced	the	commencement	of	a	common	share	repurchase	program	for	up	to	

$500	million	of	Denbury	common	stock,	and	December	31,	2012,	we	repurchased	31,090,618	shares	of	Denbury	common	
stock	(approximately	7.7%	of	our	outstanding	shares	of	common	stock	at	September	30,	2011)	for	$461.9	million,	or	$14.86	
per	share.	The	program	was	increased	to	$771.2	million	in	2012,	has	no	pre-established	ending	date	and	may	be	suspended	
or	discontinued	at	any	time.	We	are	not	obligated	to	repurchase	any	dollar	amount	or	specific	number	of	shares	of	our	
common	stock	under	the	program.

All	other	repurchases	of	our	common	stock	during	the	fourth	quarter	of	2012	were	made	in	connection	with	delivery	by	
our	employees	of	shares	to	us	to	satisfy	their	tax	withholding	requirements	related	to	the	vesting	of	restricted	shares	and	
the	exercise	of	stock	appreciation	rights.

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Share Performance Graph

The following Performance Graph and related information shall not be deemed “soliciting material” or to be “filed” with 

the SEC, nor shall such information be incorporated by reference into any future filings under the Securities Act of 1933  

or Securities Exchange Act of 1934, each as amended, except to the extent that the Company specifically incorporates it by 

reference into such filings.

The	following	graph	illustrates	changes	over	the	five-year	period	ended	December	31,	2012,	in	cumulative	total	

stockholder	return	on	our	common	stock	as	measured	against	the	cumulative	total	return	of	the	S&P	500	Index	and	the	
Dow	Jones	U.S.	Exploration	and	Production	Index.	The	graph	tracks	the	performance	of	a	$100	investment	in	our		
common	stock	and	in	each	index	(with	the	reinvestment	of	all	dividends)	from	December	31,	2007	to	December	31,	2012.

COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN

$120

$100

$80

$60

$40

$20

$0

12/07

12/08

12/09

12/10

12/11

12/12

Denbury	Resources	Inc.
S&P	500
Dow	Jones	US	Exploration	and	Production

December 31,

2007 

2008 

2009 

2010 

2011 

2012

$	100.00	
	 100.00	
	 100.00	

$	36.71	
	 63.00	
	 59.88	

$	49.75	
	 79.67	
	 84.17	

$	64.17	
	 91.67	
	 98.26	

$	50.76	
	 93.61	
	 94.14	

$	 54.45	
	 108.59
	 99.62

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Item 6. Selected Financial Data

In thousands, except per share data 
or otherwise noted 

2012 

2011 

2010 (1) 

2009 

2008 

Year Ended December 31,

Consolidated Statements of Operations data:
Revenues	and	other	income:
	 Oil,	natural	gas,	and	related	product	sales	
	 Other	
	 Total	revenues	and	other	income	 	
Net	income	(loss)	attributable	to	Denbury		

$	 2,409,867	
46,605	
$	 2,456,472	

$	 2,269,151	
40,173	
$	 2,309,324	

$	1,793,292	
128,499	
$	1,921,791	

$	 866,709	
22,441	
$	 889,150	

$	1,347,010
24,046
$	1,371,056

stockholders	(2)	

525,360	

573,333	

271,723	

(75,156)	

388,396

Net	income	(loss)	per	common	share:
	 Basic	
	 Diluted	 	
Weighted	average	number	of	common	shares	
	 outstanding:
	 Basic	
	 Diluted	 	

Consolidated Statements of Cash Flows data:
Cash	provided	by	(used	by):
	 Operating	activities	
Investing	activities	
	 Financing	activities	

Production (average daily):
	 Oil	(Bbls)	
	 Natural	gas	(Mcf)	
	 BOE	(6:1)	

Unit sales prices –  
excluding impact of derivative settlements:
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

Unit sales prices –  
including impact of derivative settlements:
	 Oil	(per	Bbl)	
	 Natural	gas	(per	Mcf)	

Costs per BOE:
	 Lease	operating	expenses	
	 Taxes	other	than	income	
	 General	and	administrative	expenses	
	 Depletion,	depreciation	and	amortization	

Proved oil and natural gas reserves: (3)
	 Oil	(MBbls)		
	 Natural	gas	(MMcf)	
	 MBOE	(6:1)	 	

Proved carbon dioxide reserves:
	 Gulf	Coast	region	(MMcf)	(4)	
	 Rocky	Mountain	region	(MMcf)	(5)	 	

Proved helium reserves associated with  
Denbury’s production rights: (6)
	 Rocky	Mountain	region	(MMcf)	

Consolidated Balance Sheets data:
	 Total	assets	
	 Total	long-term	liabilities	
	 Stockholders’	equity	

1.36	
1.35	

1.45	
1.43	

0.73	
0.72	

(0.30)	
(0.30)	

1.59
1.54

385,205	
388,938	

396,023	
400,958	

370,876	
376,255	

246,917	
246,917	

243,935
252,530

$	 1,410,891	
(1,376,841)	
45,768	

$	 1,204,814	
(1,605,958)	
37,968	

$	 855,811	
(354,780)	
(139,753)	

$	 530,599	
(969,714)	
442,637	

$	 774,519
(994,659)
177,102

66,837	
29,109	
71,689	

97.18	
3.05	

96.77	
5.67	

20.29	
6.10	
5.49	
19.34	

$	

$	

$	

60,736	
29,542	
65,660	

100.03	
4.79	

98.90	
7.34	

21.17	
6.16	
5.24	
17.07	

$	

$	

$	

59,918	
78,057	
72,927	

36,951	
68,086	
48,299	

31,436
89,442
46,343

$	

$	

$	

75.97	
4.63	

71.69	
6.45	

17.67	
4.53	
5.04	
16.32	

$	

$	

$	

57.75	
3.54	

68.63	
3.54	

17.85	
2.45	
5.77	
13.52	

$	

$	

$	

92.73
8.56

90.04
7.74

17.71
3.06
3.36
13.08

329,124	
481,641	
409,398	

357,733	
625,208	
461,934	

338,276	
357,893	
397,925	

192,879	
87,975	
207,542	

179,126
427,955
250,452

	 6,073,175	
	 3,495,534	

	 6,685,412	
	 2,195,534	

	 7,085,131	
	 2,189,756	

	 6,302,836	
—	

	 5,612,167
—

12,712	

12,004	

7,159	

—	

—

$	11,139,342	
	 5,408,032	
	 5,114,889	

$	10,184,424	
	 4,716,659	
	 4,806,498	

$	9,065,063	
	 4,105,011	
	 4,380,707	

$	4,269,978	
	 1,903,951	
	 1,972,237	

$	3,589,674
	 1,363,539
	 1,840,068

 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
(1)	 On	March	9,	2010,	we	acquired	Encore	Acquisition	Company	(“Encore”).	We	consolidated	Encore’s	results	of	operations	beginning	March	9,	2010.	See	Note	2,	

Acquisitions and Divestitures,	to	the	Consolidated	Financial	Statements	for	further	discussion	of	this	transaction.

(2)	 During	2009,	we	had	a	pretax	charge	of	$236.2	million	associated	with	our	commodity	derivative	contracts.

(3)	 Estimated	proved	reserves	as	of	December	31,	2012	reflect	the	disposition	of	reserves	associated	with	our	Bakken	area	assets	sold	in	late	2012	(approximately	

109	MMBOE).	Year-end	2012	reserves	reflect	CCA	reserves	acquired	in	2010	as	part	of	the	Encore	Merger,	but	do	not	include	estimated	reserves	of	
approximately	42	MMBOE	related	to	the	Pending	CCA	Acquisition,	which	we	currently	expect	to	close	near	the	end	of	first	quarter	of	2013.

(4)	 Proved	CO2	reserves	in	the	Gulf	Coast	region	consist	of	reserves	from	our	reservoirs	at	Jackson	Dome	and	are	presented	on	a	gross	or	8/8ths	working	interest	

basis,	of	which	our	net	revenue	interest	was	approximately	4.8	Tcf,	5.3	Tcf,	5.6	Tcf,	5.0	Tcf	and	4.5	Tcf	at	December	31,	2012,	2011,	2010,	2009	and	2008,	
respectively,	and	include	reserves	dedicated	to	volumetric	production	payments	of	57.1	Bcf,	84.7	Bcf,	100.2	Bcf,	127.1	Bcf	and	153.8	Bcf	at	December	31,	2012,	
2011,	2010,	2009	and	2008,	respectively.	(See	Note	15,	Supplemental CO2 and Helium Disclosures (Unaudited), to	the	Consolidated	Financial	Statements.)

(5)	 Proved	CO2	reserves	in	the	Rocky	Mountain	region	consist	of	our	reserves	at	Riley	Ridge	(presented	on	a	gross	working	interest	basis)	and	our	overriding	
royalty	interest	in	LaBarge	Field,	of	which	our	net	revenue	interest	was	approximately	2.9	Tcf,	1.6	Tcf	and	0.9	Tcf	at	December	31,	2012,	2011,	and	2010	
respectively.

(6)	 Reserves	associated	with	helium	production	rights	include	helium	reserves	located	in	the	acreage	in	the	Rocky	Mountain	region	for	which	we	have	the	right	to	

extract	the	helium.	The	U.S.	government	retains	title	to	the	helium	reserves	and	we	retain	the	right	to	extract	and	sell	the	helium	on	behalf	of	the	government	
in	exchange	for	a	fee.	The	estimate	of	helium	reserves	is	reduced	to	reflect	the	related	fee	we	will	remit	to	the	U.S.	government.

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Item 7. Management’s Discussion and Analysis of Financial Condition  
and Results of Operations

The	following	discussion	and	analysis	should	be	read	in	conjunction	with	our	Consolidated	Financial	Statements	and	

Notes	thereto	included	in	Item	8, Financial Statements and Supplementary Data. Our	discussion	and	analysis	includes	
forward-looking	information	that	involves	risks	and	uncertainties	and	should	be	read	in	conjunction	with	Risk Factors 
under	Item	1A	of	this	Form	10-K,	along	with Forward-Looking Information	at	the	end	of	this	section	for	information	on	the	
risks	and	uncertainties	that	could	cause	our	actual	results	to	be	materially	different	than	our	forward-looking	statements.

OVERVIEW

Our	primary	focus	is	on	enhanced	oil	recovery	utilizing	CO2	and	our	operations	are	focused	in	two	key	operating	areas:	

the	Gulf	Coast	region	and	Rocky	Mountain	region.	We	are	the	largest	combined	oil	and	natural	gas	producer	in	both	
Mississippi	and	Montana,	and	we	own	the	largest	reserves	of	CO2	used	for	tertiary	oil	recovery	east	of	the	Mississippi	River.	
Our	goal	is	to	increase	the	value	of	acquired	properties	through	a	combination	of	exploitation,	drilling	and	proven	
engineering	extraction	practices,	with	the	most	significant	emphasis	relating	to	tertiary	recovery	operations.

Strategic and Value-Driven Transactions

Over	the	last	year,	we	completed	or	entered	into	agreements	on	several	strategic	and	tax	efficient	property	transactions	

which	not	only	add	value,	but	as	importantly,	make	us	a	nearly	pure	CO2	EOR	company.	These	asset	transactions,	which	
included	both	acquisitions	and	dispositions,	aggregated	(or	upon	completion	will	aggregate)	over	$4	billion	in	value,	and	
(1)	resulted	in	an	increase	in	our	unproven	potential	reserves,	which	we	believe	provides	us	a	better	opportunity	to	achieve	
a	higher	return	due	to	the	nature	of	the	acquired	properties	compared	to	the	sold	properties,	(2)	nearly	replaced	the	
production	of	the	sold	assets	with	that	from	the	acquired	or	to-be-acquired	assets,	(3)	exchanged	proved	reserves	with	a	
high	proved	undeveloped	component	for	reserves	that	are	nearly	all	proved	developed,	which	significantly	increases	our	
current	free	cash	flow,	(4)	increased	our	Rocky	Mountain	CO2	reserves	by	1.3	Tcf	and	up	to	115	MMcf/d	of	deliverability,	and	
(5)	positioned	us	to	execute	on	our	long-term	strategy	which	we	expect	will	increase	shareholder	value	for	many	years	to	
come.	A	summary	of	these	transactions	follows,	with	more	detail	on	each	significant	transaction	discussed	below	in	this	
overview	section.

•	 Bakken	Exchange	Transaction	–	Divested	our	Bakken	area	assets,	which	were	all	non-tertiary,	at	an	estimated	value	

of	approximately	$2.0	billion,	in	exchange	for	interests	in	two	future	potential	tertiary	oil	fields,	a	new	Rocky	
Mountain	region	CO2	source	and	$1.3	billion	of	cash.

•	 Pending	Cedar	Creek	Anticline	Acquisition	–	Entered	into	an	agreement	in	early	2013	to	purchase	additional	interests	
in	the	Cedar	Creek	Anticline	(“CCA”)	in	Montana	and	North	Dakota,	an	area	with	future	potential	tertiary	oil	upside,	
for	$1.05	billion,	which	will	be	funded	with	a	portion	of	the	cash	proceeds	from	the	Bakken	Exchange	Transaction.	We	
expect	to	complete	the	Pending	CCA	Acquisition	near	the	end	of	the	first	quarter	of	2013.

In	two	separate	transactions	earlier	in	2012,	which	were	also	structured	as	like-kind	exchanges	for	federal	income	tax	

purposes,	we	completed	the	following:

•	 Acquisition	of	Thompson	Field	–	Acquired	a	nearly	100%	working	interest	and	84.7%	net	revenue	interest	in	the	

Thompson	Field	in	south	Texas,	a	future	potential	tertiary	oil	field	approximately	18	miles	from	our	current	EOR	flood	
at	Hastings	Field,	for	$366.2	million.

•	 Sale	of	Non-core	Assets	–	Sold	our	interests	in	non-core	oil	and	natural	gas	fields	in	the	Paradox	Basin	of	Utah	and	in	

the	Gulf	Coast	region	for	$68.5	million	and	$141.8	million,	respectively.

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Bakken  Exchange  Transaction.	In	late	2012,	we	closed	a	sale	and	exchange	transaction	with	Exxon	Mobil	

Corporation	and	its	wholly-owned	subsidiary	XTO	Energy	Inc.	(collectively,	“ExxonMobil”)	under	which	we	sold	to	
ExxonMobil	our	Bakken	area	assets	in	North	Dakota	and	Montana	in	exchange	for	$1.3	billion	in	cash	(after	preliminary	
closing	adjustments)	and	EOR-related	assets	(the	“Bakken	Exchange	Transaction”).	By	exchanging	these	non-tertiary	
Bakken	area	assets	for	EOR	fields	and	CO2	assets,	we	are	able	to	more	purely	focus	our	attention	on	tertiary	recovery	
operations.	These	acquired	assets	include:

•	 operating	interests	in	the	Webster	Field,	a	planned	future	tertiary	field	located	in	southeastern	Texas,	made	up	of	a	

nearly	100%	working	interest	and	nearly	80%	net	revenue	interest.	The	field	is	located	approximately	eight	miles	from	
Denbury’s	Hastings	Field	which	is	currently	being	flooded	with	CO2,	and	which	is	the	current	terminus	of	the	Green	
Pipeline	which	transports	CO2	from	natural	sources	in	the	Jackson	Dome	area	of	Mississippi.	Webster	Field	is	similar	
to	Hastings	Field,	producing	oil	from	the	Frio	zone	at	similar	depths,	and	is	also	expected	to	be	an	ideal	candidate		
for	a	CO2	flood;

•	 operating	interests	in	the	Hartzog	Draw	Field,	a	planned	future	tertiary	field,	located	in	Wyoming,	consisting	of	an	

83%	working	interest	and	71%	net	revenue	interest	in	the	oil	producing	Shannon	Sandstone	zone,	and	a	67%	working	
interest	and	53%	net	revenue	interest	in	the	natural	gas	producing	Big	George	Coal	zone.	Hartzog	Draw	Field	is	
located	approximately	12	miles	from	the	recently	completed	initial	segment	of	our	Greencore	Pipeline	and	is	expected	
to	be	an	ideal	candidate	for	a	CO2	flood;	and

•	 an	overriding	royalty	interest	equivalent	to	an	approximate	one-third	ownership	interest	in	ExxonMobil’s	CO2	reserves	

in	LaBarge	Field	in	Wyoming	with	an	estimated	1.3	Tcf	of	proved	reserves	and	up	to	115	MMcf/d	of	deliverability.

The	proved	reserves	acquired	at	Webster	and	Hartzog	Draw	fields	total	approximately	9	MMBOE	at	December	31,	2012.	
We	did	not	record	a	gain	or	loss	on	the	Bakken	Exchange	Transaction	in	accordance	with	the	full	cost	method	of	accounting.	
The	Bakken	area	assets	had	approximately	109	MMBOE	of	proved	reserves	at	the	time	of	sale,	of	which	approximately	66%	
were	undeveloped	with	an	estimated	future	development	cost	of	more	than	$1.7	billion.	A	total	of	$1.05	billion	of	the	
cash	proceeds	from	the	Bakken	Exchange	Transaction	were	placed	into	a	qualifying	trust	account	with	a	third	party	and	
will	be	used	to	fund	the	pending	CCA	acquisition	discussed	below,	as	a	like-kind	exchange	for	federal	income	tax	purposes.

Pending  Cedar  Creek  Anticline  Acquisition.	On	January	14,	2013,	we	entered	into	an	agreement	to	acquire	

producing	assets	in	the	CCA	of	Montana	and	North	Dakota	from	a	wholly-owned	subsidiary	of	ConocoPhillips	for	$1.05	billion	
in	cash	(the	“Pending	CCA	Acquisition”),	before	standard	closing	adjustments	primarily	for	revenues	and	costs	of	the	
properties	to	be	purchased	from	the	January	1,	2013	effective	date	to	the	closing	date.	The	assets	we	plan	to	purchase	from	
ConocoPhillips	include	both	additional	interests	in	certain	of	our	existing	operated	fields	in	CCA	as	well	as	operating	
interests	in	other	CCA	fields.	We	currently	estimate	on	a	preliminary	basis	that,	as	of	December	31,	2012,	the	proved	
conventional	(non-tertiary)	reserves	associated	with	the	acquired	assets,	net	to	our	acquired	interests,	were	approximately	
42	MMBOE.	We	expect	the	Pending	CCA	Acquisition	to	close	near	the	end	of	the	first	quarter	of	2013,	and	we	plan	to	fund	
this	acquisition	with	a	portion	of	the	cash	proceeds	from	the	Bakken	Exchange	Transaction	(see	discussion	above),	of	which	
$1.05	billion	was	placed	in	qualifying	trust	accounts	in	order	to	qualify	this	acquisition	for	like-kind-exchange	treatment		
for	federal	income	tax	purposes.

Acquisition  of  Thompson  Field.  In	June	2012,	we	acquired	operating	interests	in	Thompson	Field	for	$366.2	million	
after	preliminary	closing	adjustments,	which	added	approximately	900	BOE/d	to	our	production	in	2012.	The	field	is	located	
approximately	18	miles	west	of	Denbury’s	Hastings	Field	which	is	currently	being	flooded	with	CO2,	and	which	is	the	current	
terminus	of	the	Green	Pipeline	which	transports	CO2	from	natural	sources	in	the	Jackson	Dome	area	of	Mississippi.	
Thompson	Field	is	similar	to	Hastings	Field,	producing	oil	from	the	Frio	zone	at	similar	depths,	and	is	a	planned	future	
tertiary	field.	We	funded	the	purchase	principally	with	cash	proceeds	from	property	sales	earlier	in	2012	and	the	remainder	
from	borrowings	under	our	bank	credit	facility.

Sale  of  Non-Core  Assets.  On	January	19,	2012,	we	sold	our	investment	in	Vanguard	Natural	Resources	LLC	common	
units	for	cash	consideration	of	$83.5	million,	net	of	related	transaction	fees.	On	February	29,	2012,	we	completed	the	sale	of	
certain	Gulf	Coast	assets	primarily	located	in	central	and	southern	Mississippi	and	in	southern	Louisiana	for	$155.0	million,	
realizing	net	proceeds	of	$141.8	million	after	final	closing	adjustments.	On	April	9,	2012,	we	completed	the	sale	of	
certain	non-operated	assets	in	the	Paradox	Basin	of	Utah	for	$75.0	million,	realizing	net	proceeds	of	$68.5	million	after	
final	closing	adjustments.

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2012 Highlights

2012  Operating  Highlights.  Our	net	income	was	$525.4	million,	or	$1.35	per	diluted	common	share,	during	2012,	

compared	to	net	income	of	$573.3	million,	or	$1.43	per	diluted	common	share,	during	2011.	Although	we	had	a	$140.7	million	
increase	in	oil	and	natural	gas	revenues	in	2012	compared	to	2011,	which	was	primarily	driven	by	higher	production,	this	
increase	in	revenues	was	more	than	offset	by	increases	in	other	expenses,	such	as	a	$63.2	million	non-cash	change	in	the	
fair	value	of	our	commodity	derivative	contracts	in	2012	compared	to	2011,	and	an	increase	of	$98.3	million	in	depletion,	
depreciation	and	amortization	and	$25.0	million	in	lease	operating	expenses,	largely	driven	by	increased	production.		
Our	cash	flow	from	operations	was	$1.4	billion	in	2012,	compared	to	$1.2	billion	in	2011,	with	the	increase	primarily	due	to	
the	increase	in	oil	revenues	and	changes	in	working	capital	items.

During	2012,	our	oil	and	natural	gas	production,	which	was	93%	oil	(as	was	the	case	in	2011),	averaged	71,689	BOE/d,	
compared	to	65,660	BOE/d	produced	during	2011.	The	increase	in	production	is	primarily	attributable	to	record	production	
from	our	tertiary	oil	properties	(an	increase	of	4,247	BOE/d,	or	14%	from	2011)	and	production	from	our	recently	disposed	
Bakken	area	assets	(an	increase	of	5,055	BOE/d,	or	54%	from	2011	levels).	See	Results of Operations – Operating Results – 
Production for	more	information.

The	average	oil	price	we	realized	during	2012,	excluding	the	impact	of	derivative	contracts,	was	$97.18	per	barrel,	or	
about	3%	lower	than	prices	realized	during	2011.	This	decrease	was	due	primarily	to	a	decrease	in	the	prices	we	receive	
relative	to	NYMEX	oil	prices,	which	we	refer	to	as	our	NYMEX	price	differential.	Our	Gulf	Coast	region	oil	prices	received	in	
2012	continued	to	be	favorably	impacted	by	a	positive	NYMEX	price	differential,	as	a	large	portion	of	that	crude	oil	is	sold	
under	Louisiana	Light	Sweet	(“LLS”)	pricing,	which	has	maintained	a	price	higher	than	NYMEX	throughout	the	last	two	
years;	however,	some	of	that	benefit	was	offset	by	wider	negative	NYMEX	price	differentials	in	the	Rocky	Mountain	region	
during	2012.	See	Results of Operations – Operating Results – Oil and Natural Gas Revenues below	for	more	information.

Proved  Oil  and  Natural  Gas  Reserves.	Our	estimated	proved	oil	and	gas	reserves	were	409.4	MMBOE	as	of		

December	31,	2012,	as	compared	to	461.9	MMBOE	at	December	31,	2011.	We	added	114.2	MMBOE	of	estimated	proved	reserves	
during	2012,	including	tertiary	reserves	of	69.5	MMBbls,	primarily	at	Hastings	and	Oyster	Bayou	fields	based	on	these		
fields’	responses	to	CO2	injections,	25.9	MMBOE	from	the	acquisition	of	interests	in	the	Thompson,	Webster	and	Hartzog	Draw	
fields,	and	11.5	MMBOE	from	our	Bakken	area	assets	prior	to	their	sale	in	the	fourth	quarter	of	2012.	These	increases	
were	offset	by	the	disposition	of	123.9	MMBOE	of	reserves	as	a	result	of	sales	of	our	Bakken	area	assets,	non-core	assets	in	
the	Gulf	Coast	region	and	the	Paradox	Basin	of	Utah.

2013 Debt Issuance and Tender Offers

On	February	5,	2013,	we	issued	$1.2	billion	of	4 5/8%	Senior	Subordinated	Notes	due	July	2023	(the	“2023	Notes”).	The	net	
proceeds	from	this	transaction	of	$1.18	billion	were	used	to	retire	a	portion	of	our	senior	subordinated	notes	and	to	pay	
down	amounts	outstanding	on	the	Company’s	bank	credit	facility.	As	part	of	this	refinancing,	we	(1)	completed	cash	tender	
offers	for	our	9¾%	Senior	Subordinated	Notes	due	2016	(the	“9¾%	Notes”)	and	our	9½%	Senior	Subordinated	Notes	due	
2016	(the	“9½%	Notes”),	(2)	purchased	a	total	of	$378.4	million	principal	amount	of	outstanding	notes	in	February	2013,	and	
(3)	subsequently	called	the	9¾%	Notes	for	redemption	effective	on	March	7,	2013.	Beginning	May	1,	2013,	the	remaining	
$38.2	million	of	9½%	Notes	become	redeemable	at	104.75%	of	par.

CAPITAL RESOURCES AND LIQUIDITY

Overview.  During	the	last	year,	we	have	completed	or	entered	into	agreements	for	several	significant	transactions	

(discussed	above),	with	the	purchase	transactions	funded	with	a	portion	of	the	cash	proceeds	from	asset	sales,	resulting	in	
a	slight	net	increase	in	our	cash	or	capital	resources.	We	also	purchased	$461.9	million	of	our	common	stock	between	early	
October	2011	and	December	31,	2012,	funded	by	planned	reduced	capital	expenditures	in	2012	(i.e.	cash	flow),	net	cash	from	
the	transactions	and	bank	debt	(see	stock	purchase	detail	below).	In	early	2013,	we	refinanced	two	of	our	high-rate	
subordinated	notes	with	ten-year	notes	carrying	an	interest	rate	of	45/8%,	lowering	our	interest	expense	and	reducing,	with	
a	portion	of	the	proceeds	of	our	newest	notes	offering,	our	outstanding	bank	borrowings.	As	a	result	of	these	transactions,	
our	current	debt	to	cash	flow	is	slightly	higher	than	normal.	Even	so,	we	are	comfortable	that	we	will	have	more	than	
adequate	capital	resources	and	liquidity	for	the	foreseeable	future	because	(i)	we	have	refinanced	our	bank	debt	with	

 
 
 
 
 
low-cost	subordinated	debt,	leaving	significant	borrowing	capacity	on	our	bank	line;	(ii)	we	have	extended	our	oil	hedges	by	
about	six	months,	hedging	a	substantial	portion	of	our	forecasted	proven	oil	production	for	two	years	with	a	floor	price	of	
$80,	(see	Note	9,	Derivative Instruments and Hedging Activities to	the	Consolidated	Financial	Statements	for	further	details	
regarding	the	prices	and	volumes	of	our	commodity	derivative	contracts);	(iii)	we	expect	to	fund	our	projected	capital	
expenditures	for	the	next	few	years	with	cash	flow	from	operations,	which	means	that	our	expected	growth	in	production	
and	cash	flow	will	gradually	reduce	our	leverage	(assuming	oil	prices	are	relatively	consistent	with	current	levels);	and		
(iv)	we	can	significantly	reduce	our	capital	expenditures	for	extended	periods	of	time	if	necessary	and	still	maintain	current	
production	levels	as	a	result	of	our	unique	EOR	operations.

We	plan	to	fund	the	Pending	CCA	Acquisition	with	a	portion	of	the	cash	proceeds	from	the	Bakken	Exchange	Transaction,	

of	which	$1.05	billion	was	placed	in	qualifying	trust	accounts	in	order	to	qualify	the	acquisition	for	like-kind-exchange	
treatment	for	federal	income	tax	purposes.	This	$1.05	billion	cash	was	classified	as	Restricted	Cash	in	our	December	31,	
2012	Balance	Sheet.	We	expect	the	Pending	CCA	Acquisition	to	close	near	the	end	of	the	first	quarter	of	2013.

2013  Capital  Spending.  We	currently	estimate	our	2013	capital	spending	will	be	approximately	$1.0	billion,	excluding	

acquisitions	and	$125	million	of	estimated	capitalized	costs	including	geological	and	geophysical,	overhead,	interest	and	
pre-production	start-up	costs	associated	with	new	tertiary	floods.	Our	current	2013	capital	budget	includes	the	following:

•	 $540	million	allocated	for	tertiary	oil	field	expenditures;

•	 $110	million	for	pipeline	construction;

•	 $200	million	to	be	spent	on	CO2	sources;	and

•	 $150	million	to	be	spent	in	all	other	areas.

Based	on	oil	and	natural	gas	commodity	futures	prices	in	early	February	2013	and	our	current	production	forecast	

(including	production	from	the	Pending	CCA	Acquisition),	we	estimate	that	our	anticipated	2013	cash	flow	from	operations	
should	be	adequate	to	cover	our	2013	capital	budget	(including	capitalized	costs	consisting	of	geological	and	geophysical,	
overhead,	interest	and	pre-production	start-up	costs	associated	with	new	tertiary	floods).	If	prices	were	to	decrease	or	
changes	in	operating	results	were	to	cause	us	to	have	a	significant	reduction	in	anticipated	2013	cash	flows,	we	have	ample	
availability	on	our	bank	credit	facility	to	cover	any	potential	shortfall,	and	we	also	have	the	ability	to	reduce	our	capital	
expenditures	if	desired.

We	continually	monitor	our	capital	spending	and	anticipated	cash	flows	and	believe	that	we	can	adjust	our	capital	

spending	up	or	down	depending	on	cash	flows;	however,	any	such	reduction	in	capital	spending	could	reduce	our	
anticipated	production	levels	in	future	years.	For	2013	and	some	future	years,	we	have	contracted	for	certain	capital	
expenditures;	therefore,	we	cannot	eliminate	all	of	our	capital	commitments	without	penalties	(see	Commitments and 
Obligations for	further	information	regarding	these	commitments).

Stock  Repurchase  Program.	Our	Board	of	Directors	has	approved	a	common	share	repurchase	program	for	up	to	
$771.2	million	of	Denbury	common	shares.	As	of	February	21,	2013,	we	had	repurchased	approximately	$521.0	million	of	our	
common	stock	under	this	program,	with	an	additional	$250.2	million	of	purchases	authorized.	See	Note	7,	Stockholders’ 
Equity	to	the	Consolidated	Financial	Statements	for	further	discussion.	Our	share	repurchases	will	be	determined	based	on	
various	parameters;	therefore,	our	share	repurchases	may	be	less	than	the	remaining	approved	balance	under	the	program	
and	there	is	no	set	expiration	date	for	our	program.	We	anticipate	that	repurchases	during	2013	will	be	primarily	funded	
with	excess	cash	flow	from	operations	or	with	borrowings	under	our	bank	credit	facility.

Bank  Credit  Facility.	Our	primary	sources	of	capital	are	our	cash	flow	from	operations	and	borrowings	under	our	bank	
credit	facility.	As	part	of	our	semiannual	bank	review	in	November	2012,	the	borrowing	base	for	our	bank	credit	facility	was	
reaffirmed	at	$1.6	billion.	Our	next	borrowing	base	redetermination	is	scheduled	on	or	around	May	1,	2013.	We	currently	do	
not	anticipate	any	reduction	in	our	borrowing	base	as	part	of	that	redetermination,	and	we	believe,	based	on	current	
commodity	prices	and	our	proved	asset	base,	that	we	could	obtain	lender	approval	to	significantly	increase	the	borrowing	
base	under	our	bank	credit	facility	above	the	current	$1.6	billion	level	if	we	desired	to	do	so.	As	of	February	21,	2013,	we		
had	no	amounts	outstanding	under	our	$1.6	billion	bank	credit	facility	and	estimated	cash	of	approximately	$90	million,	
leaving	us	significant	liquidity	to	fund	any	cash	shortfall	for	capital	expenditures.	On	a	pro	forma	basis	as	of	February	21,	
2013,	assuming	redemption	of	all	remaining	outstanding	9¾%	Notes	and	9½%	Notes,	we	anticipate	that	our	bank	debt,		
net	of	cash,	would	be	approximately	$200	million,	leaving	significant	availability	on	our	bank	credit	facility.

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Capital  Expenditure  Summary.	The	following	table	summarizes	our	capital	expenditures	by	project	area.	Amounts	

include	capitalized	tertiary	start-up	costs	and	accrued	capital	expenditures:

In thousands 

Capital	expenditures	by	project:
	 Tertiary	oil	fields	
	 Bakken	 	
	 CO2	pipelines	
	 CO2	sources	(1)	
	 Other	areas	

	 Capital	expenditures	before	acquisitions	and	capitalized	interest	

Less:	recoveries	from	sale/leaseback	transactions		

	 Net	capital	expenditures	excluding	acquisitions	and	capitalized	interest		

Acquisitions:
	 Property	acquisitions	(2)	
	 Consideration	for	Encore	Merger	(3)	
Capitalized	interest	

	 Capital	expenditures,	net	of	sale/leaseback	transactions	 	

(1)	 Includes	capital	expenditures	related	to	the	Riley	Ridge	gas	plant.

  Year Ended December 31,

2012 

2011 

2010

$	 468,328	
428,313	
181,873	
238,613	
159,606	
	 1,476,733	
(35,102)	
	 1,441,631	

942,359	
—	
77,432	
$	2,461,422	

$	 522,007	
435,159	
134,377	
103,541	
244,055	
	 1,439,139	
(70,332)	
	 1,368,807	

250,084	
—	
61,586	
$	1,680,477	

$	 371,274
108,363
171,511
73,316
156,076
880,540
(40,490)
840,050

157,929
	 2,952,515
66,815
$	4,017,309

(2)	 In	2012,	includes	capital	expenditures	of	$212.5	million	related	to	Thompson	Field	that	are	not	reflected	as	an	Investing	Activity	on	our	Consolidated	

Statement	of	Cash	Flows	due	to	the	movement	of	proceeds	through	a	qualified	intermediary	in	a	like-kind	exchange	transaction,	and	$571.6	million	
representing	the	aggregate	fair	value	of	net	assets	acquired,	excluding	cash,	in	the	Bakken	Exchange	Transaction.	See	Note	2, Acquisitions and Divestitures 	
to	the	Consolidated	Financial	Statements.

(3)	 Consideration	given	in	the	Encore	Merger	includes	$2.09	billion	for	the	fair	value	of	Denbury	common	stock	issued.

Our	2012	capital	expenditures	were	funded	primarily	with	$1.4	billion	of	cash	flow	from	operations,	and	our	property	

acquisitions	were	funded	with	proceeds	from	asset	sales	as	discussed	above.

Our	2011	capital	expenditures,	excluding	the	Riley	Ridge	acquisition,	were	funded	with	$1.2	billion	of	cash	flow	from	
operations	and	cash	on	hand	at	the	beginning	of	the	period.	The	Riley	Ridge	acquisition	was	funded	with	incremental	
bank	debt.

Our	2010	capital	expenditures,	excluding	the	Encore	acquisition,	were	funded	with	$855.8	million	of	cash	flow	from	
operations	and	incremental	cash	generated	from	the	sale	of	non-strategic	assets.	Net	cash	used	to	acquire	Encore	was	
approximately	$815	million,	which	was	funded	with	incremental	debt	drawn	under	our	bank	credit	facility.

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Commitments Obligations

A	summary	of	our	obligations	at	December	31,	2012,	is	presented	in	the	following	table:

In thousands 

2013 

2014 and 2015  2016 and 2017 

Thereafter 

Total

Payments Due by Period

Contractual obligations:
	 Bank	Credit	Agreement	(1)	
	 Estimated	interest	payments	on	bank	credit	

facility	and	subordinated	debt	(1)	

	 Subordinated	debt	(1)	
	 Pipeline	lease	obligations	(2)	
	 Operating	lease	obligations	
	 Capital	lease	obligations	
	 Other	obligations	(3)	
	 Derivative	liabilities	(4)	
	 Asset	retirement	obligations	(5)	

	 Total	contractual	obligations	

$	

—	

$	

—	

$	 700,000	

$	

—	

$	 700,000

	 188,011	
—	
	 30,817	
	 10,656	
	 35,429	
	 118,166	
2,842	
7,042	
$	392,963	

	 375,895	
1,557	
	 64,583	
	 23,752	
	 61,768	
	 159,262	
	 23,781	
3,745	
$	714,343	

235,459	
653,520	
61,911	
25,104	
50,090	
158,343	
—	
14,285	
$	1,898,712	

267,097	
	 1,396,273	
296,226	
80,562	
31,806	
864,260	
—	
293,798	
$	3,230,022	

	 1,066,462
	 2,051,350
453,537
140,074
179,093
	 1,300,031
26,623
318,870
$	6,236,040

(1)	 These	long-term	borrowings	and	related	interest	payments	are	further	discussed	in	Note	5,	Long-Term Debt, to	the	Consolidated	Financial	Statements.	This	
table	assumes	that	our	long-term	debt	is	held	until	maturity.	During	February	2013	we	issued	$1.2	billion	in	additional	senior	subordinated	notes	and	
refinanced	a	portion	of	our	outstanding	notes	and	paid	down	borrowings	under	our	bank	credit	facility,	which	2013	events	are	not	reflected	above.	See	Note	13, 
Subsequent Events,	to	the	Consolidated	Financial	Statements.

(2)	 Represents	estimated	future	cash	payments	under	a	long-term	transportation	service	agreement	for	the	Free	State	Pipeline	and	future	minimum	cash	

payments	in	a	20-year	financing	lease	for	the	NEJD	pipeline	system.	Both	transactions	were	entered	into	during	2008	and	are	being	accounted	for	as	financing	
leases.	The	payment	required	for	the	Free	State	Pipeline	is	variable	based	upon	the	amount	of	the	CO2	we	ship	through	the	pipeline,	and	the	commitment	
amounts	disclosed	above	for	that	financing	lease	are	computed	based	upon	our	internal	forecasts.	Approximately	$217.3	million	of	these	payments,	in	the	
aggregate,	represent	interest.	See	Note	5,	Long-Term Debt,	to	the	Consolidated	Financial	Statements.

(3)	 Represents	future	cash	commitments	under	contracts	in	place	as	of	December	31,	2012,	primarily	for	pipe,	anthropogenic	CO2	purchase	contracts,	drilling	rig	
services	and	well-related	costs.	As	is	common	in	our	industry,	we	commit	to	make	certain	expenditures	on	a	regular	basis	as	part	of	our	ongoing	development	
and	exploration	program.	These	commitments	generally	relate	to	projects	that	occur	during	the	subsequent	several	months	and	are	usually	part	of	our	
normal	operating	expenses	or	part	of	our	capital	budget,	which	for	2013	is	currently	set	at	$1.0	billion	(see	2013 Capital Spending	above).	In	certain	cases	we	
have	the	ability	to	terminate	contracts	for	equipment,	in	which	case	we	would	be	liable	only	for	the	cost	incurred	by	the	vendor	up	to	that	point;	however,	as	
we	currently	do	not	anticipate	canceling	those	contracts,	these	amounts	include	our	estimated	payments	under	those	contracts.	We	also	have	recurring	
expenditures	for	such	things	as	accounting,	engineering	and	legal	fees;	software	maintenance;	subscriptions;	and	other	overhead-type	items.	Normally	these	
expenditures	do	not	change	materially	on	an	aggregate	basis	from	year	to	year	and	are	part	of	our	general	and	administrative	expenses.	We	have	not	
attempted	to	estimate	the	amounts	of	these	types	of	recurring	expenditures	in	this	table,	as	most	could	be	quickly	canceled	with	regard	to	any	specific	
vendor,	even	though	the	expense	itself	may	be	required	for	our	ongoing	normal	operations.	Other	obligations	exclude	approximately	$1.3	billion	of	potential	
costs	to	be	incurred	after	2017	for	anthropogenic	CO2	purchase	contracts	for	which	plant	construction	has	not	yet	begun	and	therefore	it	is	uncertain	that	we	
will	be	obligated	to	incur	these	costs.

(4)	 Derivative	liabilities	represent	the	fair	value	of	our	derivatives	presented	as	liabilities	in	our	Consolidated	Balance	Sheet	as	of	December	31,	2012.	The	

ultimate	settlement	amounts	of	our	derivative	obligations	are	unknown	because	they	are	subject	to	continuing	market	risk.	See	further	discussion	of	our	
derivative	contracts	and	their	market	price	sensitivities	in	Market Risk Management	below	in	this	Management’s	Discussion	and	Analysis	of	Financial	
Condition	and	Results	of	Operations,	and	in	Note	9,	Derivative Instruments and Hedging Activities, to	the	Consolidated	Financial	Statements.

(5)	 Represents	the	estimated	future	asset	retirement	obligations	on	an	undiscounted	basis.	The	present	value	of	the	discounted	asset	retirement	obligation	is	

$106.4	million,	as	determined	under	the	Asset	Retirement	and	Environmental	Obligations	topic	of	the	FASC,	and	is	further	discussed	in	Note	3,	Asset Retirement 
Obligations,	to	the	Consolidated	Financial	Statements.

Off  Balance-Sheet  Arrangements.	We	have	several	operating	leases	relating	to	office	space	and	other	minor	

equipment	leases.	At	December	31,	2012,	we	had	a	total	of	$16.0	million	of	letters	of	credit	outstanding	under	our	bank	
credit	facility.	Additionally,	we	have	obligations	that	are	not	currently	recorded	on	our	balance	sheet	relating	to	various	
obligations	for	development	and	exploratory	expenditures	that	arise	from	our	normal	capital	expenditure	program	or	from	
other	transactions	common	to	our	industry.	In	addition,	in	order	to	recover	our	undeveloped	proved	reserves,	we	must		
also	fund	the	associated	future	development	costs	estimated	in	our	proved	reserve	reports.	For	a	further	discussion	of	our	
future	development	costs,	see	Note	14,	Supplemental Oil and Natural Gas Disclosures (Unaudited),	to	the	Consolidated	
Financial	Statements.

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RE SULTS OF OPERATIONS

As	discussed	in	Item	1,	Business and Properties – Oil and Natural Gas Operations – Enhanced Oil Recovery Overview 
above,	our	tertiary	operations	represent	a	significant	portion	of	our	overall	operations	and	have	become	our	primary	
strategic	focus.	The	economics	of	a	tertiary	field	and	the	related	impact	on	our	financial	statements	differ	from	a	
conventional	oil	and	gas	play	and	are	explained	further	below.

Financial Overview of Tertiary Operations

While	it	is	difficult	to	accurately	forecast	future	production,	we	believe	our	tertiary	recovery	operations	provide	

significant	long-term	production	growth	potential	at	reasonable	rates	of	return,	with	relatively	low	risk.	Our	rate	of	return	
from	our	tertiary	operations	has	generally	been	higher	than	our	rate	of	return	on	traditional	oil	and	gas	operations.	
Generally,	finding	and	development	costs	are	lower	and	operating	costs	are	higher	than	traditional	oil	and	gas	operations.	
We	have	been	developing	tertiary	oil	properties	for	over	13	years,	and	the	financial	impact	of	such	operations	is	reflected	
in	our	historical	financial	statements.	The	summary	below	highlights	our	observations	regarding	how	tertiary	operations	
have	impacted	our	financial	statements.

Finding  and  Development  Costs.  We	currently	expect	Finding	and	Development	Costs	(including	future	development	
and	abandonment	costs	but	excluding	CO2	pipeline	infrastructure	capital	expenditures	and	expenditures	on	fields	without	
proven	reserves)	over	the	life	of	each	field	to	be	lower	than	the	industry	average	costs	for	other	oil	properties.	See	the	
definition	of	Finding	and	Development	Costs	in	the	Glossary and Selected Abbreviations.

Timing  of  Capital  Costs.  There	is	a	significant	delay	between	the	initial	capital	expenditures	on	these	fields	and	the	

resulting	production	increases.	We	must	build	facilities,	and	often	a	CO2	pipeline	to	the	field,	before	CO2	flooding	can	
commence,	and	it	usually	takes	six	to	twelve	months	before	the	field	responds	to	the	injection	of	CO2	(i.e.,	oil	production	
commences).	Further,	we	may	spend	significant	amounts	of	capital	before	we	can	recognize	any	proven	reserves	from	fields	
we	flood	and,	even	after	a	field	has	proven	reserves,	there	will	usually	be	significant	amounts	of	additional	capital	required	
to	fully	develop	the	field.

Recognition  of  Proved  Reserves.  In	order	to	recognize	proved	tertiary	oil	reserves,	we	must	either	demonstrate	
production	resulting	from	the	tertiary	process	or	the	field	must	be	analogous	to	an	existing	tertiary	flood.	The	magnitude	
of	proven	reserves	that	we	can	book	in	any	given	year	will	depend	on	our	progress	with	new	floods,	the	timing	of	the	
production	response	from	new	floods	and	the	performance	of	our	existing	floods.

Production  Rates.	The	production	growth	rate	at	a	tertiary	flood	can	vary	from	quarter	to	quarter	as	a	tertiary	field’s	

production	may	increase	rapidly	when	wells	respond	to	the	CO2,	plateau	temporarily,	and	then	resume	its	growth	as	
additional	areas	of	the	field	are	developed.	During	a	tertiary	flood	life	cycle,	facility	capacity	is	increased	from	time	to	
time,	which	occasionally	requires	temporary	shutdowns	during	installation,	thereby	causing	temporary	declines	in	
production.	We	also	find	it	difficult	to	precisely	predict	when	any	given	well	will	respond	to	the	injected	CO2,	as	the	CO2	
seldom	travels	through	the	rock	consistently	due	to	heterogeneity	in	the	oil-bearing	formations.	We	find	all	of	these	
fluctuations	to	be	normal,	and	generally	expect	oil	production	at	a	tertiary	field	to	increase	over	time	until	the	entire	field	
is	developed,	albeit	sometimes	in	inconsistent	patterns.

Operating  Costs.  Tertiary	projects	may	be	more	expensive	to	operate	than	traditional	industry	operations	because	of	
the	cost	of	injecting	and	recycling	the	CO2	(primarily	due	to	the	cost	of	the	CO2	and	the	significant	energy	requirements	to	
re-compress	the	CO2	back	into	a	near-liquid	state	for	re-injection	purposes).	The	costs	of	our	CO2	and	the	electricity	required	
to	recycle	and	inject	this	CO2	comprise	almost	half	of	our	typical	tertiary	operating	expenses.	Since	these	costs	vary	along	
with	commodity	and	electrical	prices,	they	are	highly	variable	and	will	increase	in	a	high-commodity-price	environment	and	
decrease	in	a	low-price	environment.	Most	of	our	CO2	operating	costs	are	allocated	to	our	tertiary	oil	fields	and	recorded		
as	lease	operating	expenses	(following	the	commencement	of	tertiary	oil	production)	at	the	time	the	CO2	is	injected,	and	
these	costs	have	historically	represented	approximately	20%	to	25%	of	the	total	operating	costs	for	our	tertiary	
operations.	Since	we	expense	all	of	the	operating	costs	to	produce	and	inject	our	CO2	(following	the	commencement	of	
tertiary	oil	production),	the	operating	costs	per	barrel	will	be	higher	at	the	inception	of	CO2	injection	projects	because		
of	minimal	related	oil	production	at	that	time.

 
 
 
 
 
Operating Results

Certain	of	our	operating	results	and	statistics	for	each	of	the	last	three	years	are	included	in	the	following	table.

In thousands, except per share and unit data 

Operating results
	 Net	income	attributable	to	Denbury	stockholders	
	 Net	income	per	common	share	–	basic	
	 Net	income	per	common	share	–	diluted	
	 Net	cash	provided	by	operating	activities	

Average daily production volumes
	 Bbls/d	
	 Mcf/d	
	 BOE/d	

Operating revenues
	 Oil	sales	
	 Natural	gas	sales	

	 Total	oil	and	natural	gas	sales	 	

Commodity derivative contracts (2)
	 Cash	receipt	(payment)	on	settlement	of	commodity	derivative	contracts		
	 Non-cash	fair	value	adjustment	income	(expense)	

	 Total	income	from	commodity	derivative	contracts	

Unit prices – excluding impact of derivative settlements
	 Oil	price	per	Bbl	
	 Natural	gas	price	per	Mcf	

Unit prices – including impact of derivative settlements (2)
	 Oil	price	per	Bbl	
	 Natural	gas	price	per	Mcf	

Oil and natural gas operating expenses
	 Lease	operating	expenses	
	 Marketing	expenses	
	 Production	and	ad	valorem	taxes		

Oil and natural gas operating revenues and expenses per BOE
	 Oil	and	natural	gas	revenues	
	 Lease	operating	expenses	
	 Marketing	expenses,	net	of	third-party	purchases	
	 Production	and	ad	valorem	taxes		

CO2 sources – revenues and expenses
	 CO2	sales	and	transportation	fees		
	 CO2	discovery	and	operating	expenses	(3)	

	 CO2	revenue	and	expenses,	net	 	

Year Ended December 31,

2012 

2011 

2010 (1)

$	 525,360	
1.36	
1.35	
	 1,410,891	

$	 573,333	
1.45	
1.43	
	 1,204,814	

$	 271,723
0.73
0.72
855,811

66,837	
29,109	
71,689	

60,736	
29,542	
65,660	

59,918
78,057
72,927

$	2,377,337	
32,530	
$	2,409,867	

$	2,217,529	
51,622	
$	2,269,151	

$	1,661,380
131,912
$	1,793,292

$	

$	

$	

$	

17,880	
(13,046)	
4,834	

97.18	
3.05	

96.77	
5.67	

$	 532,359	
52,836	
149,919	

$	

91.85	
20.29	
1.60	
5.71	

$	

$	

$	

$	

2,377	
50,120	
52,497	

100.03	
4.79	

98.90	
7.34	

$	 507,397	
26,047	
139,170	

$	

94.68	
21.17	
1.09	
5.81	

$	

$	

$	

$	

(31,612)
53,026
21,414

75.97
4.63

71.69
6.45

$	 470,364
31,036
114,980

$	

67.37
17.67
1.17
4.32

$	

$	

26,453	
(14,694)	
11,759	

$	

$	

22,711	
(14,258)	
8,453	

$	

$	

19,204
(7,801)
11,403

(1)	 Includes	the	results	of	operations	of	Encore	and	ENP	from	March	9,	2010,	through	December	31,	2010.

(2)	 See	also Market Risk Management below	for	information	concerning	our	derivative	transactions.

(3)	 Includes	$9.5	million	and	$7.5	million	of	exploratory	costs	in	2012	and	2011,	respectively.	We	incurred	no	exploratory	costs	during	2010.

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Production

Average	daily	production	by	area	for	2012,	2011	and	2010,	and	for	each	of	the	quarters	of	2012,	is	shown	below:

Tertiary oil field 

Tertiary oil production
Gulf Coast region
	 Mature	properties:
	 Brookhaven	
	 Eucutta	 	
	 Mallalieu	
	 Other	mature	properties	(2)	

	 Delhi		
	 Hastings	
	 Heidelberg	 	
	 Oyster	Bayou	
	 Tinsley	

	 Total	tertiary	oil	production	

Non-tertiary oil and gas production
Gulf Coast region
	 Mississippi	 	
	 Texas	
	 Other	

	 Total	Gulf	Coast	region	

Rocky Mountain region
	 Cedar	Creek	Anticline	
	 Other	

	 Total	Rocky	Mountain	region	

	 Total	continuing	production	

Properties disposed:
	 Bakken	area	assets	(3)	
	 Non-core	asset	divestitures	(4)	
	 Legacy	Encore	properties	
	 ENP	

	 Total	production	

Average Daily Production (BOE/d)

2012 Quarters 

First 
Quarter 

Second 
Quarter 

Third 
Quarter 

Fourth 
Quarter 

Year Ended December 31, 

2012 

2011 

2010 (1)

3,014	
3,090	
2,585	
8,012	
4,181	
618	
3,583	
877	
7,297	
	 33,257	

4,573	
3,674	
1,281	
9,528	

8,496	
3,204	
	 11,700	
	 54,485	

	 15,285	
1,762	
—	
—	
	 71,532	

2,779	
2,870	
2,461	
7,867	
4,023	
1,913	
3,823	
1,304	
8,168	
	 35,208	

4,095	
4,573	
1,306	
9,974	

8,535	
3,060	
	 11,595	
	 56,777	

	 15,503	
57	
—	
—	
	 72,337	

	 2,460	
	 2,782	
	 2,181	
	 7,347	
	 3,813	
	 2,794	
	 3,716	
	 1,540	
	 8,153	
	 34,786	

	 3,401	
	 5,173	
	 1,137	
	 9,711	

	 8,490	
	 3,037	
	 11,527	
	 56,024	

	 16,752	
—	
—	
—	
	 72,776	

	 2,520	
	 2,730	
	 2,127	
	 7,605	
	 5,237	
	 3,409	
	 3,930	
	 1,826	
	 8,166	
	 37,550	

	 3,663	
	 5,513	
	 1,217	
	 10,393	

	 8,493	
	 3,616	
	 12,109	
	 60,052	

	 10,064	
—	
—	
—	
	 70,116	

	 2,692	
	 2,868	
	 2,338	
	 7,707	
	 4,315	
	 2,188	
	 3,763	
	 1,388	
	 7,947	
	 35,206	

	 3,930	
	 4,737	
	 1,235	
	 9,902	

	 8,503	
	 3,231	
	 11,734	
	 56,842	

	 14,395	
452	
—	
—	
	 71,689	

	 3,255	
	 3,121	
	 2,693	
	 8,955	
	 2,739	
—	
	 3,448	
5	
	 6,743	
	 30,959	

	 5,486	
	 4,133	
	 1,336	
	 10,955	

	 8,968	
	 2,968	
	 11,936	
	 53,850	

	 9,340	
	 2,470	
—	
—	
	 65,660	

	 3,429
	 3,495
	 3,377
	 10,240
483
—
	 2,454
—
	 5,584
	 29,062

	 6,505
	 4,941
	 1,559
	 13,005

	 7,930
	 2,673
	 10,603
	 52,670

	 4,315
	 2,288
	 6,556
	 7,098
	 72,927

(1)	 Includes	production	of	Encore	and	ENP	from	the	March	9,	2010	acquisition	date	through	December	31,	2010,	or	in	the	case	of	non-strategic	assets	disposed,	

through	the	date	the	asset	was	sold.

(2)	 Other	mature	properties	include	Cranfield,	Little	Creek,	Lockhart	Crossing,	Martinville,	McComb	and	Soso	fields.

(3)	 Includes	production	from	certain	Bakken	area	assets	sold	in	the	fourth	quarter	of	2012.

(4)	 Includes	production	from	certain	non-core	Gulf	Coast	assets	sold	in	late	February	2012	and	certain	non-operated	assets	in	the	Greater	Aneth	Field	in	the	

Paradox	Basin	of	Utah	sold	in	April	2012.

Total	Production

As	outlined	in	the	above	table,	continuing	production	increased	2,992	BOE/d	(6%)	between	2011	and	2012.	The	increases	

were	primarily	due	to	production	increases	from	our	tertiary	oil	fields,	which	reached	record	aggregate	production		
levels	in	2012,	offset	by	normal	declines	in	most	of	our	other	non-tertiary	properties.	The	year-over-year	9%	increase	in	total	
production	was	further	impacted	by	increases	in	production	from	our	Bakken	area	assets,	which	were	sold	late	in	the	
fourth	quarter	of	2012.

Continuing	production	increased	1,180	BOE/d	(2%)	between	2010	and	2011.	Increases	in	tertiary	production	and	Cedar	

Creek	Anticline	production	due	to	a	full	year	of	operations	were	offset	by	normal	declines	at	our	non-tertiary	fields.		
Total	production	decreased	10%	due	to	the	sale	of	non-strategic	legacy	Encore	and	ENP	properties	during	2010,	offset	by	a	
116%	increase	in	Bakken	area	production.

 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Our	production	during	2012	and	2011	was	93%	oil	compared	to	82%	during	2010.	The	increase	in	oil	production	

percentage	in	2011	is	due	to	the	sales	of	the	non-strategic	Encore	and	ENP	properties	during	2010,	which	had	a	higher	
percentage	of	natural	gas	production,	and	increases	in	our	tertiary	and	Bakken	production,	which	are	primarily	oil.

Tertiary	Production

Oil	production	from	our	tertiary	operations	increased	to	record	levels	during	2012	averaging	35,206	Bbls/d,	a	14%	

increase	over	our	2011	tertiary	production	level	of	30,959	Bbls/d,	primarily	due	to	production	growth	in	response	to	
continued	expansion	of	the	tertiary	floods	at	Tinsley	and	Delhi	fields	and	production	at	our	Oyster	Bayou	and	Hastings	
fields,	which	experienced	their	initial	tertiary	production	response	in	late	December	2011	and	early	January	2012,	
respectively.	Offsetting	2012	production	gains	were	production	declines	in	our	more	mature	tertiary	fields.	Tertiary	
production	during	the	fourth	quarter	of	2012	increased	8%	over	third	quarter	of	2012	levels,	largely	due	to	production	
increases	at	Delhi	and	Hastings	fields	resulting	from	the	expansion	of	the	tertiary	floods	at	these	fields.	Although	all		
of	our	tertiary	production	is	currently	in	the	Gulf	Coast	region,	during	2013	we	plan	to	initiate	our	first	tertiary	operations	
in	the	Rocky	Mountain	region	at	Bell	Creek	Field	and	estimate	initial	production	from	this	field	to	begin	in	the	second		
half	of	2013.

Oil	production	from	our	tertiary	operations	averaged	30,959	Bbls/d	during	2011,	a	7%	increase	over	our	2010	tertiary	

production	level	of	29,062	Bbls/d,	primarily	due	to	production	growth	in	response	to	continued	expansion	of	the	tertiary	
floods	in	Delhi,	Tinsley,	Cranfield	and	Heidelberg	fields.	Offsetting	2011	tertiary	production	gains	were	declines	in	our	more	
mature	fields.

Non-Tertiary	Production

With	the	exception	of	production	from	our	recently	sold	Bakken	area	assets	and	acquisitions	during	2012,	which		

have	increased	our	production	in	Texas,	production	from	our	other	non-tertiary	properties	generally	declined	during	2012	
and	2011.	Most	of	these	conventional	oil	production	declines	are	impacted	by	the	expansion	of	our	tertiary	floods	in		
those	areas.

Our	production	from	CCA	has	generally	declined	pending	further	development.	During	2013,	we	plan	to	improve	our	

waterflood	at	CCA	through	well	and	facility	work	and	recompletion	of	existing	wells,	as	a	result	of	which	we	expect	a	slight	
increase	in	production.	Additionally,	we	expect	CCA	volumes	to	increase	upon	the	close	of	our	Pending	CCA	Acquisition		
(see	Overview – Strategic and Value-Driven Transactions),	which	to-be-acquired	properties	we	estimate	will	add	approximately	
7,700	BOE/d	to	our	2013	annual	production.

Production	from	our	Bakken	area	assets	averaged	14,395	BOE/d	during	2012,	compared	to	9,340	BOE/d	during	2011	and	

4,315	BOE/d	during	2010.	Since	we	acquired	the	Bakken	area	properties	in	the	Encore	Merger,	we	have	grown	Bakken	area	
production	through	an	acceleration	of	drilling	activities	in	that	area,	as	we	increased	our	operated	drilling	rigs	from	two	at	
the	time	of	the	acquisition	in	March	2010,	to	five	at	the	beginning	of	2011	and	as	many	as	seven	during	the	latter	half	of	
2011.	During	2012,	we	reduced	the	rig	count	to	four,	and	late	in	the	fourth	quarter	of	2012,	we	sold	our	Bakken	area	assets	
in	the	Bakken	Exchange	Transaction.

Oil and Natural Gas Revenues

Oil	and	natural	gas	revenues	increased	between	2010	and	2011	and	again	between	2011	and	2012.	The	increase	in	oil	and	

natural	gas	revenues	in	2011	was	attributable	to	higher	realized	oil	prices,	whereas	the	increase	in	oil	and	natural	gas	
revenues	in	2012	was	the	result	of	increases	in	production	volumes.	The	changes	in	revenues	due	to	these	factors,	excluding	
any	impact	of	our	derivative	contracts,	are	reflected	in	the	following	table:

In thousands 

Change	in	revenues	due	to:

 Year Ended December 31,  
2012 vs. 2011 

 Year Ended December 31, 
2011 vs. 2010 

Increase 
(Decrease) in 
Revenues 

Percentage 
Increase 
(Decrease) in 
Revenues 

Increase 
(Decrease) in 
Revenues 

Percentage
Increase
(Decrease) in
Revenues

Increase	(decrease)	in	production		
Increase	(decrease)	in	commodity	prices	
	 Total	increase	in	oil	and	natural	gas	revenues	

$	215,150	
(74,434)	
$	140,716	

9%	
(3)%	
6%	

$	(178,709)	
	 654,568	
$	475,859	

(10)%
37%
27%

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Excluding	any	impact	of	our	derivative	contracts,	our	net	realized	commodity	prices	and	NYMEX	differentials	were	as	

follows	during	2012,	2011	and	2010:

Net realized prices:
	 Oil	price	per	Bbl	
	 Natural	gas	price	per	Mcf	
	 Price	per	BOE	

NYMEX differentials:
	 Oil	per	Bbl	 	
	 Natural	gas	per	Mcf	

Year Ended December 31,

2012 

2011 

2010

$	97.18	
	 3.05	
	 91.85	

$	 2.99	
	 0.23	

$	100.03	
4.79	
	 94.68	

$	 4.95	
0.76	

$	75.97
	 4.63
	 67.37

$	 (3.54)
	 0.23

As	reflected	in	the	table	above,	our	net	realized	oil	price	declined	3%	during	2012,	compared	to	prices	received	during	

2011,	largely	due	to	a	decline	in	our	oil	price	differentials	between	the	two	periods,	from	$4.95	per	Bbl	above	NYMEX		
in	2011	to	$2.99	above	NYMEX	in	2012.	The	net	differential	we	received	was	primarily	impacted	by	positive	differentials	in	
the	Gulf	Coast	region,	offset	by	unfavorable	differentials	in	the	Rocky	Mountain	region,	each	of	which	is	discussed	in	
further	detail	below.

We	received	favorable	NYMEX	differentials	in	the	Gulf	Coast	region	during	2012	and	2011,	primarily	due	to	the	favorable	

differential	for	crude	oil	sold	under	LLS	index	prices.	The	quarterly	average	LLS-to-NYMEX	differential	(on	a	trade-month	
basis)	ranged	from	a	positive	$12.55	per	Bbl	to	$20.08	per	Bbl	for	2012,	compared	to	a	positive	$9.28	per	Bbl	to	$23.36	per	Bbl	
during	2011.	During	2012,	we	sold	approximately	40%	of	our	crude	oil	at	prices	based	on	the	LLS	index	price	and	
approximately	22%	at	prices	partially	tied	to	the	LLS	index	price.	On	a	pro	forma	basis	excluding	Bakken	area	assets	sold	in	
2012,	we	sold	approximately	49%	of	our	crude	oil	at	prices	based	on	the	LLS	index	price	and	approximately	27%	at	prices	
partially	tied	to	the	LLS	index	price.	Prices	received	in	a	regional	market	can	differ	from	NYMEX	pricing	due	to	a	variety	of	
reasons,	including	supply	and/or	demand	factors	and	location	differentials.	While	this	differential	is	significant	in	the	
pricing	for	our	oil	production,	other	market	and	contractual	factors	may	prevent	us	from	realizing	the	full	differential.	As	
indicated	by	the	above	variations,	the	LLS-to-NYMEX	differential	is	volatile	and	has	been	at	historically	high	levels		
in	recent	periods,	which	may	not	continue	as	infrastructure	is	added	to	move	barrels	of	oil	from	the	U.S.	Mid-continent	
market	to	the	Gulf	Coast.

Our	production	in	the	Rocky	Mountain	region	has	generally	sold	at	a	discount	to	NYMEX	oil	prices.	Unfavorable	NYMEX	
differentials	in	the	Rocky	Mountain	region	are	largely	impacted	by	oil	production	from	our	Bakken	area	assets,	which	were	
sold	late	in	the	fourth	quarter	of	2012.	The	realized	oil	prices	for	these	sold	properties	averaged	$15.05	per	Bbl	below	
NYMEX	during	2012,	compared	to	an	average	differential	of	$8.86	per	Bbl	below	NYMEX	during	2011.	Our	oil	production	in	
the	Rocky	Mountain	region,	excluding	the	Bakken	area	assets	we	sold	in	the	fourth	quarter	of	2012,	also	sells	at	a	discount	
to	NYMEX	oil	prices.

Excluding	oil	prices	received	on	the	Bakken	area	assets	that	were	sold	late	in	the	fourth	quarter	of	2012,	our		

Company-wide	fourth	quarter	average	differential	was	$11.65	above	NYMEX.	Our	Company-wide	oil	NYMEX	differential	
improved	during	2011	over	our	differential	in	2010	primarily	due	to	the	favorable	price	differential	for	crude	oil	sold	
under	LLS	index	pricing.

Our	natural	gas	NYMEX	differentials	are	generally	caused	by	movement	in	the	NYMEX	natural	gas	prices	during	the	month,	

as	most	of	our	natural	gas	is	sold	on	an	index	price	that	is	set	near	the	first	of	each	month.	While	the	percentage	change		
in	NYMEX	natural	gas	differentials	can	be	quite	large,	these	differentials	are	very	seldom	more	than	a	dollar	above	or	below	
NYMEX	prices.

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Oil and Natural Gas Derivative Contracts

The	following	table	summarizes	the	impact	our	oil	and	natural	gas	derivative	contracts	had	on	our	operating	results	for	

2012,	2011	and	2010:

In thousands 

2012 

2011 

2010 

2012 

2011 

2010

Non-Cash Fair Value Gain/(Loss) 

Cash Settlements Receipt/(Payment) 

Crude oil derivative contracts:
	 First	quarter	
	 Second	quarter	
	 Third	quarter	
	 Fourth	quarter	
	 Full	Year	

Natural gas derivative contracts:
	 First	quarter	
	 Second	quarter	
	 Third	quarter	
	 Fourth	quarter	(1)	

	 Full	Year	

$	(42,445)	
	 140,923	
(60,726)	
(26,848)	
$	 10,904	

$	

(1,640)	
(9,096)	
(7,174)	
(6,040)	
$	(23,950)	

Total commodity derivative contracts:
	 First	quarter	
	 Second	quarter	
	 Third	quarter	
	 Fourth	quarter	
	 Full	Year	

$	(44,085)	
	 131,827	
(67,900)	
(32,888)	
$	(13,046)	

$	(167,064)	
	 187,194	
	 205,355	
	 (166,505)	
$	 58,980	

$	

$	

(5,274)	
(3,348)	
229	
(467)	
(8,860)	

$	(172,338)	
	 183,846	
	 205,584	
	 (166,972)	
$	 50,120	

$	 61,821	
	 145,099	
(62,450)	
	 (100,029)	
$	 44,441	

$	 39,018	
(19,909)	
19,933	
(30,457)	
8,585	

$	

$	100,839	
	 125,190	
(42,517)	
	 (130,486)	
$	 53,026	

$	(8,230)	
(709)	
(641)	
(411)	
$	(9,991)	

$	 7,040	
	 7,991	
	 6,910	
	 5,930	
$	27,871	

$	(1,190)	
	 7,282	
	 6,269	
	 5,519	
$	17,880	

$	 (5,028)	
	 (16,972)	
(1,857)	
(1,271)	
$	(25,128)	

$	 6,616	
6,030	
6,427	
8,432	
$	 27,505	

$	 1,588	
	 (10,942)	
4,570	
7,161	
$	 2,377	

$	(63,550)
	 (13,829)
(3,590)
	 (12,448)
$	(93,417)

$	 3,749
	 16,630
	 13,626
	 27,800
$	 61,805

$	(59,801)
2,801
	 10,036
	 15,352
$	(31,612)

(1)	 Natural	gas	derivative	settlements	for	the	fourth	quarter	of	2010	include	receipts	of	$10.0	million	related	to	the	monetization	of	natural	gas	swaps	that		

were	unwound	due	to	the	sale	of	our	Haynesville	and	East	Texas	assets.

Changes	in	commodity	prices	and	the	expiration	of	contracts	cause	fluctuations	in	the	estimated	fair	value	of	our	oil		
and	natural	gas	derivative	contracts.	Because	we	do	not	utilize	hedge	accounting	for	our	commodity	derivative	contracts,	
the	period-to-period	changes	in	the	fair	value	of	these	contracts,	as	outlined	above,	are	recognized	in	our	statements		
of	operations.

Our	current	derivative	contracts	for	2013	or	beyond	are	all	NYMEX	oil	contracts	given	that	our	current	and	forecasted	
production	is	primarily	oil	(93%	of	BOE	volumes	in	2012),	leading	us	to	use	oil	derivative	contracts	in	our	commodity	market	
risk	management	program.	The	detail	of	our	outstanding	commodity	derivative	contracts	at	December	31,	2012	is	included	
in	Note	9,	Derivative Instruments and Hedging Activities,	to	the	Consolidated	Financial	Statements.

Production Expenses

Lease	operating	expense

In thousands, except per BOE data 

Lease	operating	expense
	 Tertiary		
	 Non-tertiary	
Total	lease	operating	expense	

Lease	operating	expense	per	BOE
	 Tertiary		
	 Non-tertiary	
Total	lease	operating	expense	per	BOE	

  Year Ended December 31,

2012 

2011 

2010

$	307,686	
	 224,673	
$	532,359	

$	 23.88	
16.83	
$	 20.29	

$	272,066	
	 235,331	
$	507,397	

$	 24.08	
18.58	
$	 21.17	

$	229,940
	 240,424
$	470,364

$	 21.68
15.02
$	 17.67

The	5%	increase	in	lease	operating	expense	during	2012,	compared	to	2011,	is	due	to	the	expansion	of	our	tertiary	

operations	and	the	resultant	higher	production	volumes.	On	a	per-BOE	basis,	lease	operating	expense	declined	4%	between	
the	two	periods	due	primarily	to	lower	non-tertiary	operating	cost	per	barrel.	Lease	operating	expense	increased		
8%	between	2010	and	2011	on	an	absolute-dollar	basis	and	20%	on	a	per-BOE	basis.

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During	2012,	tertiary	lease	operating	expense	increased	13%	on	an	absolute-dollar	basis	compared	to	2011	levels,	but	
decreased	slightly	on	a	per-BOE	basis,	from	an	average	of	$24.08	per	Bbl	during	2011	to	an	average	of	$23.88	per	Bbl	during	
2012.	The	decrease	in	tertiary	operating	costs	per	barrel	is	due	to	the	14%	increase	in	tertiary	production,	which	more	than	
offset	the	higher	total	tertiary	operating	expenses	resulting	from	the	increase	in	the	number	of	our	active	tertiary	floods	
due	to	our	new	tertiary	floods	at	Hastings	and	Oyster	Bayou	fields.	For	any	specific	field,	we	expect	our	tertiary	lease	
operating	expense	per	barrel	to	be	high	initially,	as	we	experienced	early	in	2012	with	our	Oyster	Bayou	and	Hastings	
floods,	and	then	decrease	as	production	increases,	ultimately	leveling	off	until	production	begins	to	decline	in	the	later	life	
of	the	field,	when	lease	operating	expense	per	barrel	will	again	increase.

Our	higher	per-barrel	tertiary	lease	operating	expense	in	2011,	compared	to	2010,	was	due	primarily	to	higher	workover,	

power,	and	facility	and	compressor	repair	expenses,	plus	higher	CO2	expense,	which	is	primarily	due	to	higher	oil	prices.		
Our	single	highest	cost	for	our	tertiary	operations	is	our	cost	for	fuel	and	utilities,	averaging	$6.51	per	Bbl	in	2012,	$6.31	per	
Bbl	in	2011	and	$5.93	per	Bbl	in	2010,	which	has	increased	on	a	per-barrel	basis	due	to	the	higher	cost	of	these	items,	and	
the	continued	expansion	of	our	tertiary	floods.

Currently,	our	CO2	expense	comprises	approximately	one-fourth	of	our	typical	Gulf	Coast	tertiary	operating	expenses	and	

consists	of	our	CO2	production	expenses,	payment	to	CO2	royalty	owners	and	taxes	for	the	CO2	we	utilize	in	our	tertiary	
floods.	This	cost	for	produced	CO2,	which	excludes	depreciation	and	amortization	of	capital	expended	at	our	Jackson	Dome	
source	and	CO2	pipelines,	was	approximately	$0.26	per	Mcf	in	2012	and	2011,	compared	to	an	average	cost	of	$0.22	per	Mcf	
in	2010.	The	change	in	our	cost	of	CO2	is	primarily	directly	attributable	to	changes	in	oil	prices,	as	the	royalty	we	pay	to		
CO2	royalty	owners	is	directly	tied	to	oil	prices.	Including	the	cost	of	depreciation	and	amortization	expense	related	to	the	
Jackson	Dome	CO2	production	but	excluding	depreciation	of	our	CO2	pipelines,	our	cost	of	CO2	was	$0.33	per	Mcf	in	2012,	
$0.31	per	Mcf	in	2011	and	$0.30	per	Mcf	in	2010.

Non-tertiary	lease	operating	expense	decreased	5%	on	an	absolute-dollar	basis	and	decreased	9%	on	a	per-BOE	basis	
during	2012	compared	to	2011.	The	lower	operating	expense	per	BOE	was	largely	driven	by	increased	production	related	to	
our	Bakken	area	assets	which	had	lower	operating	costs	than	our	other	properties,	and	the	sale	of	certain	non-core	assets	
during	the	first	half	of	2012,	which	had	a	higher	operating	cost	per	BOE	compared	to	the	average	of	our	other	properties.	
We	sold	our	Bakken	area	assets	late	in	the	fourth	quarter	of	2012,	and	thus	expect	our	non-tertiary	operating	expense	per	
BOE	to	increase	during	2013.	Excluding	the	Bakken	area	assets,	our	pro	forma	lease	operating	expense	would	have	been	
$24.11	per	BOE	in	2012.

Non-tertiary	lease	operating	costs	declined	between	2010	and	2011	on	an	absolute-dollar	basis	primarily	due	to	the	sale	

of	non-strategic	Encore	assets	during	2010,	which	reduced	our	lease	operating	costs	by	$44.1	million,	partially	offset	by	
higher	operating	costs	in	our	Rocky	Mountain	region.	Increases	in	our	Rocky	Mountain	region	operating	expenses	are	
primarily	attributable	to:	(1)	the	2010	period	being	approximately	ten	months,	as	the	properties	were	acquired	in	early	
March	2010;	(2)	the	Cedar	Creek	Anticline,	where	we	experienced	higher	workover	costs	in	2011	compared	to	2010;	and		
(3)	the	Bakken,	where	production	increased	significantly	since	2010	due	to	new	wells.	Non-tertiary	lease	operating	expense	
per	BOE	increased	$3.56	(20%)	between	2010	and	2011,	primarily	due	to	the	sale	of	non-strategic	Encore	and	ENP	
properties	from	May	2010	through	December	2010,	which	were	primarily	natural	gas	properties	that	generally	had	a	lower	
operating	cost	per	BOE	than	Denbury’s	legacy	properties.

Taxes other than income

Taxes	other	than	income	includes	ad	valorem,	production	and	franchise	taxes.	On	a	per-BOE	basis,	taxes	remained	
relatively	steady	between	2012	and	2011	and	increased	by	36%	between	2010	and	2011.	The	change	in	each	period	is	
generally	aligned	with	fluctuations	in	oil	and	natural	gas	revenues.

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General and Administrative Expenses (“G&A”)

In thousands, except per BOE data and employees 

Gross	administrative	costs	
Gross	stock-based	compensation	
Operator	labor	and	overhead	recovery	charges	
Capitalized	exploration	and	development	costs	

	 Net	G&A	expense	

G&A	per	BOE:
	 Net	administrative	costs	
	 Net	stock-based	compensation	

	 Net	G&A	expense	

Employees	as	of	December	31	

  Year Ended December 31,

2012 

2011 

2010

$	296,696	
37,897	
	 (141,358)	
(49,216)	
$	144,019	

$	

$	

4.48	
1.01	
5.49	

1,432	

$	246,112	
39,875	
	 (125,466)	
(34,996)	
$	125,525	

$	

$	

3.98	
1.26	
5.24	

1,308	

$	231,280
35,075
	 (112,160)
(20,074)
$	134,121

$	

$	

3.95
1.09
5.04

1,195

Net	G&A	expense	increased	15%	between	2011	and	2012	and	decreased	6%	between	2010	and	2011	on	an	absolute-dollar	

basis	and	increased	5%	between	2011	and	2012	and	4%	between	2010	and	2011	on	a	per-BOE	basis.

Gross	administrative	costs	increased	$50.6	million,	or	21%,	between	2011	and	2012,	and	increased	$14.8	million,	or	6%,	

between	2010	and	2011.	The	increase	in	2012	compared	to	2011	is	due	to	higher	compensation-related	costs	both	from		
an	increase	in	headcount	from	year-end	2011	levels	(9%),	as	well	as	higher	salaries	and	employee	bonus	expense	in	2012,	
plus	an	increase	in	other	employee-related	costs	such	as	health	insurance.	The	annual	employee	bonus	was	paid	at		
105%	of	target	in	2012	as	compared	to	67%	of	target	in	2011.	The	increased	gross	administrative	cost	in	2011	compared	to	
2010	is	primarily	due	to	increased	expense	resulting	from	the	Encore	Merger,	as	the	2010	period	included	the	effect	of		
the	Encore	Merger	beginning	on	the	acquisition	date,	March	9,	2010.

Stock-based	compensation	costs	decreased	in	2012	as	compared	to	2011	due	to	a	shift	in	the	mix	of	compensation	

awarded	to	employees	during	2012	to	include	more	cash-based	compensation.	Stock-based	compensation	costs	increased	
during	2011	over	2010	levels	primarily	due	to	the	increased	number	of	employees	during	2011	compared	to	2010.	Stock-
based	compensation,	net	of	amounts	reclassified	to	field	operations	or	capitalized,	were	approximately	$26.5	million	in	
2012,	$30.3	million	in	2011	and	$27.9	million	in	2010.

Our	well	operating	agreements	allow	us,	when	we	are	the	operator,	to	charge	a	well	with	a	specified	overhead	rate	

during	the	drilling	phase	and	also	to	charge	a	monthly	fixed	overhead	rate	for	each	producing	well.	In	addition,	salaries	
associated	with	field	personnel	are	initially	recorded	as	gross	administrative	costs	and	subsequently	reclassified	to	lease	
operating	expenses	or	capitalized	to	field	development	costs	to	the	extent	those	individuals	are	dedicated	to	oil	and	gas	
production	and	development	activities.	As	a	result	of	additional	operated	wells	and	drilling	activities,	additional	tertiary	
operations	and	increased	compensation	expense,	the	amount	we	recovered	as	operator	labor	and	overhead	charges	
increased	by	13%	between	2011	and	2012	and	12%	between	2010	and	2011.	Capitalized	exploration	and	development	costs	
also	increased	between	the	periods,	primarily	due	to	increased	compensation	costs	subject	to	capitalization.

Interest and Financing Expenses

In thousands, except per BOE data and interest rates 

2012 

2011 

2010

  Year Ended December 31,

Cash	interest	expense	
Noncash	interest	expense	
Less:	Capitalized	interest	
Interest	expense,	net	

Interest	expense,	net	per	BOE	
Average	debt	outstanding	
Average	interest	rate	(1)	

$	 216,205	
14,808	
(77,432)	
$	 153,581	

$	
5.85	
$	2,935,485	

$	 207,727	
18,219	
(61,586)	
$	 164,360	

$	
6.86	
$	2,470,682	

$	 221,759
21,169
(66,815)
$	 176,113

$	
6.62
$	2,736,634

7.4%	

8.4%	

8.1%

(1)	 Includes	commitment	fees	but	excludes	debt	issue	costs	and	amortization	of	discount	or	premium.

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Interest	expense,	net	decreased	$10.8	million,	or	7%,	between	2012	and	2011,	and	decreased	$11.8	million,	or	7%,	between	

2010	and	2011.	The	decline	in	interest	expense	between	2011	and	2012	is	largely	due	to	higher	capitalized	interest,	offset		
in	part	by	higher	cash	interest	expense	resulting	from	an	increase	in	average	debt	outstanding	during	the	period.	
Capitalized	interest	increased	26%	during	2012	primarily	due	to	incremental	capitalized	interest	on	the	Riley	Ridge	plant	
and	Greencore	Pipeline	construction	projects.	We	expect	capitalized	interest	to	decline	in	2013	primarily	due	to	(1)	a	lower	
capitalization	rate	resulting	from	the	issuance	of	our	2023	Notes	and	(2)	the	anticipated	completion	of	a	number	of	
projects	during	2013,	including	the	Riley	Ridge	gas	plant	and	Bell	Creek	Field,	both	of	which	are	expected	to	be	placed	into	
service	during	the	first	half	or	mid-2013.

Interest	expense,	net	decreased	between	2010	and	2011	primarily	due	to	a	decrease	in	average	debt	outstanding.	Our	
debt	level	increased	in	early	2010	as	a	result	of	the	Encore	Merger	and	decreased	throughout	2010	and	in	early	2011,	as	we	
repaid	debt	with	proceeds	from	the	sale	of	non-strategic	legacy	Encore	assets	and	our	ENP	ownership	interests.	Also,	in	
early	2011	we	refinanced	$525	million	of	our	7½%	senior	subordinated	debt	with	$400	million	of	our	63/8%	senior	
subordinated	debt,	decreasing	our	debt	outstanding	and	interest	rate.	Capitalized	interest	decreased	8%	between	2010	and	
2011	due	to	a	reduction	in	capitalized	interest	on	the	Green	Pipeline,	which	was	placed	in	service	during	2010,	offset	by	
incremental	capitalized	interest	on	CO2	floods,	Riley	Ridge	and	the	Greencore	Pipeline.

See	Note	5, Long-Term Debt,	to	the	Consolidated	Financial	Statements	for	information	regarding	our	February	2013	debt	

issuance	and	tender	offer	to	refinance	certain	of	our	outstanding	debt	at	a	lower	interest	rate	and	for	a	longer	term.

Depletion, Depreciation and Amortization (“DD&A”)

In thousands, except per BOE data  

Depletion	and	depreciation	of	oil	and	natural	gas	properties	
Depletion	and	depreciation	of	CO2	properties	
Asset	retirement	obligations	
Depreciation	of	other	fixed	assets	
Cumulative	change	due	to	revision	in	policy	for	CO2	properties		

	 Total	DD&A	

DD&A	per	BOE:
	 Oil	and	natural	gas	properties	
	 CO2	and	other	fixed	assets	
	 Cumulative	change	due	to	revision	in	policy	for	CO2	properties	 	

	 Total	DD&A	cost	per	BOE	

  Year Ended December 31,

2012 

2011 

2010

$	420,094	
	 23,843	
7,228	
	 56,373	
—	
$	507,538	

$	 16.28	
3.06	
—	
$	 19.34	

$	362,788	
	 18,220	
6,287	
	 21,901	
—	
$	409,196	

$	 15.40	
1.67	
—	
$	 17.07	

$	394,957
	 20,665
6,443
	 21,860
(9,618)
$	434,307

$	 15.08
1.60
(0.36)
$	 16.32

We	adjust	our	DD&A	rate	each	quarter	for	significant	changes	in	our	estimates	of	oil	and	natural	gas	reserves	and	costs.	

In	addition,	under	full	cost	accounting	rules,	the	divestiture	of	oil	and	gas	properties	generally	does	not	result	in	gain	or	
loss	recognition;	instead,	the	proceeds	of	the	disposition	reduce	the	full	cost	pool.	As	such,	our	DD&A	rate	has	changed	
significantly	over	time,	and	it	may	continue	to	change	in	the	future.	Depletion	and	depreciation	of	oil	and	natural	gas	
properties	increased	between	2011	and	2012	on	both	an	absolute-dollar	basis	and	a	per-BOE	basis.	During	the	first	nine	
months	of	2012,	our	DD&A	rate	for	our	oil	and	natural	gas	properties	was	$16.90	per	BOE,	which	was	higher	than	2011	levels	
due	to	higher	finding	and	development	costs	related	to	our	Bakken	capital	program.	However,	in	the	fourth	quarter	of	2012,	
our	DD&A	rate	for	our	oil	and	natural	gas	properties	decreased	to	$14.39	per	BOE	due	to	the	Bakken	Exchange	Transaction.	
As	a	result	of	this	transaction,	there	was	a	decrease	in	capitalized	costs	relating	to	the	sales	proceeds	credited	to	the	full	
cost	pool	and	a	significant	reduction	in	future	development	costs	relating	to	the	sold	proved	reserves,	partially	offset	by	
the	reduction	in	total	proved	reserves.	Upon	the	completion	of	the	Pending	CCA	Acquisition	late	in	the	first	quarter	of	2013,	
we	expect	our	DD&A	rate	to	increase	from	the	fourth	quarter	of	2012	rate	due	to	our	expectation	that	the	CCA	acquisition	
will	be	recorded	at	a	rate	higher	than	our	current	DD&A	rate.	However,	since	the	value	at	which	CCA	is	recorded	is	partially	
dependent	upon	the	value	of	the	to-be-acquired	assets	as	of	the	closing	date	of	the	transaction	in	accordance	with	
generally	accepted	accounting	principles,	we	are	not	able	to	precisely	predict	the	DD&A	impact.

Depletion	and	depreciation	of	oil	and	natural	gas	properties	decreased	on	an	absolute-dollar	basis	during	2011	

compared	to	2010,	primarily	due	to	the	sale	of	non-strategic	legacy	Encore	assets	and	our	ownership	interests	in	ENP	during	
2010.	Depletion	and	depreciation	of	oil	and	gas	properties	increased	on	a	per-BOE	basis	during	2011	compared	to	2010,	

 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
primarily	due	to	higher	costs	per	barrel	associated	with	our	larger	2011	Bakken	capital	program	and	upward	revisions		
in	estimated	future	development	costs,	also	primarily	relating	to	the	Bakken	assets,	offset	in	part	by	natural	gas	reserves	
added	from	the	Riley	Ridge	acquisition,	which	were	purchased	at	a	low	cost	per	Mcf.

During	2012,	we	added	114.2	MMBOE	of	estimated	proved	reserves,	including	tertiary	reserves	of	69.5	MMBbls,	primarily	

at	Hastings	and	Oyster	Bayou	fields	based	on	these	fields’	responses	to	CO2	injections,	25.9	MMBOE	from	the	acquisition		
of	interests	in	the	Thompson,	Webster	and	Hartzog	Draw	fields,	and	11.5	MMBOE	from	our	Bakken	area	assets	prior	to	
their	sale	in	the	fourth	quarter	of	2012.	These	increases	were	offset	by	the	disposition	of	123.9	MMBOE	of	reserves	
associated	with	the	disposed	properties	including	our	Bakken	area	assets,	non-core	assets	in	the	Gulf	Coast	region	and	the	
Paradox	Basin	of	Utah.	We	reclassified	approximately	$430	million	from	unevaluated	properties	to	the	full	cost	pool	
relating	to	Hastings	and	Oyster	Bayou	fields,	representing	the	acquisition	costs	and	development	expenditures	incurred	on	
these	fields	prior	to	recognizing	proved	reserves.

Depletion	and	depreciation	of	our	CO2	properties	increased	on	an	absolute-dollar	and	BOE	basis	during	2012	from	2011	
levels	primarily	due	to	increased	drilling	activity	at	Jackson	Dome,	and	depreciation	of	other	fixed	assets	increased	during	
the	same	period	due	to	incremental	pipeline	depreciation	and	the	change	in	classification	of	our	equipment	leases	from	
operating	to	capital	during	the	second	quarter	of	2012.	See	Note	5, Long-Term Debt, to	the	Consolidated	Financial	
Statements	for	further	discussion.	Our	DD&A	expense	for	our	CO2	assets	decreased	in	2011	compared	to	2010	due	to	CO2	
reserve	increases	at	Jackson	Dome	at	the	end	of	2010.	On	a	per	BOE	basis,	DD&A	expense	for	our	CO2	assets	and	other	fixed	
assets	increased	in	2011	compared	to	that	in	the	prior	year	period	due	to	decreased	oil	and	natural	gas	production	
volumes	as	a	result	of	the	sale	of	non-strategic	Encore	properties	and	our	interests	in	ENP	during	2010.

During	the	third	quarter	of	2010,	we	changed	our	method	of	accounting	for	CO2	properties	and	recorded	a	one-time,	

non-cash	net	reduction	of	$9.6	million	($6.0	million	after	tax)	to	DD&A	expense	for	the	period,	which	reflects	the	cumulative	
impact	of	the	revised	accounting	policy	on	our	historical	financials.	See	Note	1,	Significant Accounting Policies, to	the	
Consolidated	Financial	Statements	for	additional	information	regarding	this	change.

Under	full	cost	accounting	rules,	we	are	required	each	quarter	to	perform	a	ceiling	test	calculation.	Under	these	rules,	
the	full	cost	ceiling	value	is	calculated	using	a	12-month	average	price	based	on	the	first-day	price	of	every	month	during	
the	period.	We	did	not	have	a	ceiling	test	write-down	during	2012,	2011	or	2010.	However,	if	oil	prices	were	to	decrease	
significantly	in	subsequent	periods,	we	may	be	required	to	record	write-downs	under	the	full	cost	pool	ceiling	test	in	the	
future.	The	possibility	and	amount	of	any	future	write-down	is	difficult	to	predict	and	will	depend	upon	oil	and	natural	gas	
prices,	the	incremental	proved	reserves	that	may	be	added	each	period,	revisions	to	previous	estimates	of	reserves	and	
future	capital	expenditures,	and	additional	capital	spent.

Encore Transaction and Other Costs and Impairment of Assets

The	FASC	Business Combinations topic	requires	that	all	transaction	costs	(advisory,	legal,	accounting,	due	diligence,	

integration,	third-party	fees,	etc.)	be	expensed	as	incurred.	We	recognized	a	total	of	$4.4	million	and	$92.3	million	of	
transaction	and	other	costs	during	2011	and	2010,	respectively,	associated	with	the	Encore	Merger,	including	$3.6	million	
and	$43.8	million	during	2011	and	2010,	respectively,	related	to	severance	costs.

During	2012,	we	recognized	$17.5	million	of	impairment	charges	primarily	related	to	our	investment	in	Faustina	

Hydrogen	Products	LLC,	an	entity	created	to	develop	a	proposed	plant	from	which	we	could	offtake	CO2,	as	a	result	of	the	
project	not	moving	forward.

Income Taxes

Amounts in thousands, except per BOE amounts and tax rates  

2012 

2011 

2010

  Year Ended December 31,

Current	income	tax	expense	
Deferred	income	tax	expense	
	 Total	income	tax	expense	

Average	income	tax	expense	per	BOE	
Effective	tax	rate	
Total	net	deferred	tax	liability	

$	

75,754	
255,743	
$	 331,497	

$	

8,249	
342,463	
$	 350,712	

$	

33,194
160,349
$	 193,543

$	

12.63	

$	

14.63	

$	

38.7%	

38.0%	

7.27
40.4%

$	2,124,296	

$	1,868,420	

$	1,520,538

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Our	income	tax	provision	for	2012	was	based	on	an	estimated	statutory	rate	of	approximately	38.5%,	while	2011	and	2010	

tax	provisions	were	based	on	an	estimated	statutory	rate	of	approximately	38%.	The	increase	in	our	statutory	rate	is	
partly	driven	by	a	shift	in	the	amount	of	revenues	we	earn	in	each	state	due	to	recent	acquisitions	and	divestitures.	Our	
effective	tax	rate	was	consistent	with	our	estimated	statutory	rates	in	2012	and	2011;	however,	our	2010	effective	tax		
rate	was	higher	than	the	estimated	statutory	rate	in	that	year	primarily	due	to	the	recognition	of	additional	net	tax	expense	
on	the	revaluation	of	our	deferred	taxes	at	the	date	of	the	Encore	Merger.

During	2012,	for	federal	income	tax	purposes,	we	structured	the	divestitures	of	our	Bakken	area	assets	and	certain	

non-core	assets	as	like-kind-exchange	transactions	for	interests	acquired	in	Thompson,	Webster,	Hartzog	Draw	and	
LaBarge	fields	and	assets	to	be	acquired	in	the	Pending	CCA	Acquisition,	thereby	deferring	the	majority	of	the	taxable	gain	
on	those	divestitures.	The	increase	in	current	income	tax	expense	during	2012	includes	$42	million	of	current	taxes	
resulting	from	the	taxable	gain	recognized	in	the	Bakken	Exchange	Transaction	that	we	were	unable	to	defer	through	a	
like-kind-exchange	transaction.	Current	income	tax	expense	during	2012,	2011	and	2010	also	includes	our	anticipated	
alternative	minimum	cash	taxes	that	we	cannot	offset	with	enhanced	oil	recovery	credits,	as	well	as	state	income	taxes.	
Our	current	income	tax	expense	during	2011	was	offset	by	a	net	benefit	due	to	the	change	in	treatment	for	certain	items	
between	our	2010	tax	provision	and	our	2010	filed	tax	return.	This	change	in	treatment	resulted	in	a	reclassification	of	
approximately	$16.9	million	from	current	to	deferred	taxes.

As	of	December	31,	2012,	we	had	an	estimated	$17.3	million	of	enhanced	oil	recovery	credits	to	carry	forward	that	can		
be	utilized	to	reduce	our	current	income	taxes	during	2013	or	future	years,	down	from	$53.4	million	in	2011	due	to	current	
year	utilization.	These	enhanced	oil	recovery	credits	do	not	begin	to	expire	until	2025.	Since	the	ability	to	earn	additional	
enhanced	oil	recovery	credits	is	based	upon	the	level	of	oil	prices,	we	would	not	currently	expect	to	earn	additional	
enhanced	oil	recovery	credits	unless	oil	prices	were	to	decrease	significantly	from	current	levels.

Per BOE Data

The	following	table	summarizes	our	cash	flow,	DD&A	and	results	of	operations	on	a	per	BOE	basis	for	the	comparative	

periods.	Each	of	the	individual	components	is	discussed	above.

Per BOE data 

Oil	and	natural	gas	revenues	
Gain	(loss)	on	settlements	of	derivative	contracts	 	
Lease	operating	expenses	
Production	and	ad	valorem	taxes	
Marketing	expenses,	net	of	third	party	purchases		
	 Production	netback	
CO2	sales,	net	of	operating	expenses		
General	and	administrative	expenses	
Transaction	costs	and	other	costs	related	to	the	Encore	Merger	
Interest	expense,	net	
Other	
Changes	in	assets	and	liabilities	relating	to	operations	
	 Cash	flow	from	operations	
DD&A	
Deferred	income	taxes	
Gain	on	sale	of	interests	in	Genesis	
Loss	on	early	extinguishment	of	debt	
Non-cash	commodity	derivative	adjustments	
Net	income	attributable	to	noncontrolling	interest	
Impairment	of	assets	
Other	non-cash	items	
	 Net	income	

Year Ended December 31,

2012 

2011 

2010

$	 91.85	
0.68	
	 (20.29)	
(5.71)	
(1.60)	
	 64.93	
0.45	
(5.49)	
	 —	
(5.85)	
(1.44)	
1.17	
	 53.77	
	 (19.34)	
(9.75)	
	 —	
	 —	
(0.50)	
	 —	
(0.67)	
(3.49)	
$	 20.02	

$	94.68	
0.10	
	 (21.17)	
(5.81)	
(1.09)	
	 66.71	
0.36	
(5.24)	
(0.18)	
(6.86)	
1.95	
(6.47)	
	 50.27	
	 (17.07)	
	 (14.29)	
	 —	
(0.67)	
2.09	
	 —	
(0.96)	
4.55	
$	23.92	

$	67.37
(1.19)
	 (17.67)
(4.32)
(1.17)
	 43.02
0.43
(5.04)
(3.47)
(6.62)
0.77
3.06
	 32.15
	 (16.32)
(6.02)
3.81
	 —
1.99
(0.52)
	 —
(4.88)
$	10.21

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Market Risk Management

Restricted Cash

Restricted	cash	on	our	Consolidated	Balance	Sheet	as	of	December	31,	2012	consists	of	proceeds	from	the	Bakken	

Exchange	Transaction	(see	Note	2,	Acquisitions and Divestitures,	to	the	Consolidated	Financial	Statements)	being	held	by	a	
qualified	intermediary	through	three	separate	financial	institutions	and	which	are	restricted	for	application	towards	
future	acquisitions	to	facilitate	an	anticipated	like-kind-exchange	transaction	for	federal	income	tax	purposes.	We	manage	
and	control	counterparty	credit	risk	related	to	this	restricted	cash	using	a	trust	agreement,	whereby	the	assets	held	in	
trust	must	be	segregated	from	the	financial	institution’s	assets,	and	in	the	event	of	its	bankruptcy,	the	funds	would	not	be	
subject	to	payments	to	the	creditors	of	the	financial	institution.

Debt

We	finance	some	of	our	acquisitions	and	other	expenditures	with	fixed	and	variable	rate	debt.	These	debt	agreements	

expose	us	to	market	risk	related	to	changes	in	interest	rates.	At	December	31,	2012,	we	had	$700	million	in	outstanding	
borrowings	on	our	bank	credit	facility.	None	of	our	existing	debt	has	any	triggers	or	covenants	regarding	our	debt	ratings	
with	rating	agencies,	although	under	the	NEJD	financing	lease,	in	the	event	of	significant	downgrades	of	our	corporate	
credit	rating	by	the	rating	agencies,	certain	credit	enhancements	can	be	required	from	us,	and	possibly	other	remedies	
made	available	under	the	lease.	The	fair	value	of	our	senior	subordinated	debt	is	based	on	quoted	market	prices.		
The	following	table	presents	the	principal	cash	flows	and	fair	values	of	our	outstanding	debt	at	December	31,	2012.

In thousands 

2014 

2015 

2016 

2017 

2020 

2021 

Total 

Fair
Value

Variable rate debt:
Bank	credit	facility	(weighted		
	 average	interest	rate	of	1.96%		
	 at	December	31,	2012)	

Fixed rate debt:
9½%	Senior	Subordinated	Notes	
	 due	2016	
9¾%	Senior	Subordinated	Notes	
	 due	2016	
8¼%	Senior	Subordinated	Notes	
	 due	2020	
63/8	%	Senior	Subordinated	Notes	
	 due	2021	
Other	Subordinated	Notes	

$	 —	

$	 —	

$	700,000	

$	 —	

$	

—	

$	 —	

$	700,000	

$	 700,000

	 —	

	 —	

	 224,920	

	 —	

	 —	

	 —	

	 426,350	

	 —	

—	

—	

—	

	 224,920	

	 240,372

—	

	 426,350	

	 451,931

	 —	

	 —	

—	

	 —	

	 996,273	

—	

	 996,273	

	 1,120,807

	 —	
	1,072	

	 —	
	 485	

—	
—	

	 —	
	 2,250	

—	
—	

	 400,000	
—	

	 400,000	
3,807	

	 440,000
3,807

See	Note	5,	Long-Term Debt,	to	the	Consolidated	Financial	Statements	for	details	regarding	our	long-term	debt,	including	
information	regarding	our	February	2013	debt	issuance	and	tender	offers	to	refinance	certain	of	our	outstanding	debt	at	a	
lower	interest	rate	and	for	a	longer	term.

Oil and Natural Gas Derivative Contracts

From	time	to	time,	we	enter	into	oil	and	natural	gas	derivative	contracts	to	provide	an	economic	hedge	of	our	exposure	

to	commodity	price	risk	associated	with	anticipated	future	oil	and	natural	gas	production.	These	contracts	have	consisted		
of	price	floors,	collars	and	fixed	price	swaps.	We	do	not	hold	or	issue	derivative	financial	instruments	for	trading	purposes.	
The	production	that	we	hedge	has	varied	from	year	to	year,	depending	on	our	levels	of	debt	and	financial	strength	and	
expectation	of	future	commodity	prices.	We	currently	employ	a	strategy	to	hedge	a	portion	of	our	forecasted	production	
for	approximately	two	years	in	the	future	from	the	current	quarter,	as	we	believe	it	is	important	to	protect	our	future	cash	
flow	for	a	short	period	of	time	in	order	to	give	us	time	to	adjust	to	commodity	price	fluctuations,	particularly	since	many		
of	our	expenditures	have	long	lead	times	(see	Capital Resources and Liquidity	above).	We	recently	extended	this	from		
a	period	closer	to	a	year	and	a	half	into	the	future,	due	in	part	to	slightly	higher	leverage.	We	do	not	have	any	natural	gas	
derivative	contracts	for	2013	or	beyond.	Because	our	current	and	forecasted	production	is	primarily	oil	(93%	of	BOE	
volumes	in	2012),	we	use	oil	derivative	contracts	in	our	commodity	market	risk	management	program.	See	Note	9,	
Derivative Instruments and Hedging Activities,	to	the	Consolidated	Financial	Statements	for	additional	information	
regarding	our	commodity	derivative	contracts.

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All	of	the	mark-to-market	valuations	used	for	our	oil	and	natural	gas	derivatives	are	provided	by	external	sources.	We	
manage	and	control	market	and	counterparty	credit	risk	through	established	internal	control	procedures	that	are	reviewed	
on	an	ongoing	basis.	We	attempt	to	minimize	credit	risk	exposure	to	counterparties	through	formal	credit	policies,	monitoring	
procedures	and	diversification.	All	of	our	commodity	derivative	contracts	are	with	parties	that	are	lenders	under	our	bank	
credit	facility.	We	have	included	an	estimate	of	nonperformance	risk	in	the	fair	value	measurement	of	our	oil	and	natural	gas	
derivative	contracts,	which	we	have	measured	for	nonperformance	risk	based	upon	credit	default	swaps	or	credit	spreads.

For	accounting	purposes,	we	do	not	apply	hedge	accounting	to	our	oil	and	natural	gas	derivative	contracts.	This	means	
that	any	changes	in	the	fair	value	of	these	derivative	contracts	will	be	charged	to	earnings	on	a	quarterly	basis	instead	of	
charging	the	effective	portion	to	other	comprehensive	income	and	the	ineffective	portion	to	earnings.

At	December	31,	2012,	our	derivative	contracts	were	recorded	at	their	fair	value,	which	was	a	net	liability	of	approximately	

$6.9	million,	a	$13.0	million	decrease	from	the	$6.1	million	net	asset	recorded	at	December	31,	2011.	This	change	is	
primarily	related	to	the	expiration	of	oil	and	natural	gas	derivative	contracts	during	2012	and	to	the	oil	futures	prices	as	of	
December	31,	2012,	in	relation	to	the	new	commodity	derivative	contracts	we	entered	into	during	2012	for	future	periods.

Commodity Derivative Sensitivity Analysis

Based	on	NYMEX	crude	oil	and	natural	gas	futures	prices	as	of	December	31,	2012,	and	assuming	both	a	10%	increase	
and	decrease	thereon,	we	would	expect	to	make	or	receive	payments	on	our	crude	oil	derivative	contracts	as	shown	in	the	
following	table:

In thousands 

Based	on:
	 NYMEX	futures	prices	as	of	December	31,	2012	

	 10%	increase	in	prices	
	 10%	decrease	in	prices	

Critical Accounting Policies and Estimates

Crude Oil
Derivative
Contracts

Receipt/
(Payment)

$	 —
	 (35,849)
—

The	preparation	of	financial	statements	in	accordance	with	generally	accepted	accounting	principles	requires	that	we	
select	certain	accounting	policies	and	make	certain	estimates	and	judgments	regarding	the	application	of	those	policies.	
Our	significant	accounting	policies	are	included	in	Note	1,	Significant Accounting Policies,	to	the	Consolidated	Financial	
Statements.	These	policies,	along	with	the	underlying	assumptions	and	judgments	by	our	management	in	their	application,	
have	a	significant	impact	on	our	consolidated	financial	statements.	Following	is	a	discussion	of	our	most	critical	
accounting	estimates,	judgments	and	uncertainties	that	are	inherent	in	the	preparation	of	our	financial	statements.

Full Cost Method of Accounting, Depletion and Depreciation and Oil and Natural Gas Properties

Businesses	involved	in	the	production	of	oil	and	natural	gas	are	required	to	follow	accounting	rules	that	are	unique	to	

the	oil	and	gas	industry.	We	apply	the	full	cost	method	of	accounting	for	our	oil	and	natural	gas	properties.	Another	
acceptable	method	of	accounting	for	oil	and	natural	gas	production	activities	is	the	successful	efforts	method	of	
accounting.	In	general,	the	primary	differences	between	the	two	methods	are	related	to	the	capitalization	of	costs	and	the	
evaluation	for	asset	impairment.	Under	the	full	cost	method,	all	geological	and	geophysical	costs,	exploratory	dry	holes	
and	delay	rentals	are	capitalized	to	the	full	cost	pool,	whereas	under	the	successful	efforts	method	such	costs	are	
expensed	as	incurred.	In	the	assessment	of	impairment	of	oil	and	natural	gas	properties,	the	successful	efforts	method	
follows	the	FASB	guidance	under	the	Accounting for the Impairment or Disposal of Long-Lived Assets topic	of	the	FASC,	
under	which	the	net	book	value	of	assets	is	measured	for	impairment	against	the	undiscounted	future	cash	flows	using	
commodity	prices	consistent	with	management	expectations.	Under	the	full	cost	method,	the	full	cost	pool	(net	book	value	
of	oil	and	natural	gas	properties)	is	measured	against	future	cash	flows	discounted	at	10%	using	the	average	first-day-of-
the-month	oil	and	natural	gas	price	for	each	month	during	the	12-month	period	ended	as	of	each	quarterly	reporting	
period.	The	financial	results	for	a	given	period	could	be	substantially	different	depending	on	the	method	of	accounting	that	
an	oil	and	gas	entity	applies.	Further,	we	do	not	designate	our	oil	and	natural	gas	derivative	contracts	as	hedge	
instruments	for	accounting	purposes	under	the Derivatives and Hedging topic	of	the	FASC	(see	below),	and	as	a	result,	
these	contracts	are	not	considered	in	the	full	cost	ceiling	test.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
We	make	significant	estimates	at	the	end	of	each	period	related	to	accruals	for	oil	and	natural	gas	revenues,	production,	

capitalized	costs	and	operating	expenses.	We	calculate	these	estimates	with	our	best	available	data,	which	includes,	
among	other	things,	production	reports,	price	posting,	information	compiled	from	daily	drilling	reports	and	other	internal	
tracking	devices,	and	analysis	of	historical	results	and	trends.	While	management	is	not	aware	of	any	required	revisions		
to	its	estimates,	there	will	likely	be	future	adjustments	resulting	from	such	things	as	changes	in	ownership	interests,	payouts,	
joint	venture	audits,	re-allocations	by	the	purchaser/pipeline,	or	other	corrections	and	adjustments	common	in	the	oil		
and	gas	industry,	many	of	which	will	require	retroactive	application.	These	types	of	adjustments	cannot	be	currently	
estimated	or	determined	and	will	be	recorded	in	the	period	during	which	the	adjustment	occurs.

Under	full	cost	accounting,	the	estimated	quantities	of	proved	oil	and	natural	gas	reserves	used	to	compute	depletion	
and	the	related	present	value	of	estimated	future	net	cash	flows	therefrom	used	to	perform	the	full	cost	ceiling	test	have	a	
significant	impact	on	the	underlying	financial	statements.	The	process	of	estimating	oil	and	natural	gas	reserves	is	very	
complex,	requiring	significant	decisions	in	the	evaluation	of	all	available	geological,	geophysical,	engineering	and	economic	
data.	The	data	for	a	given	field	may	also	change	substantially	over	time	as	a	result	of	numerous	factors,	including	
additional	development	activity,	evolving	production	history	and	continued	reassessment	of	the	viability	of	production	
under	varying	economic	conditions.	As	a	result,	material	revisions	to	existing	reserve	estimates	may	occur	from	time	to	
time.	Although	every	reasonable	effort	is	made	to	ensure	that	the	reported	reserve	estimates	represent	the	most	accurate	
assessments	possible,	including	the	hiring	of	independent	engineers	to	prepare	reported	estimates,	the	subjective	
decisions	and	variances	in	available	data	for	various	fields	make	these	estimates	generally	less	precise	than	other	estimates	
included	in	our	financial	statement	disclosures.	Over	the	last	four	years,	annual	revisions	to	our	reserve	estimates	have	
averaged	approximately	1.7%	of	the	previous	year’s	estimates	and	have	been	both	positive	and	negative.

Changes	in	commodity	prices	also	affect	our	reserve	quantities.	Between	2010	and	2011,	oil	prices	used	to	calculate	

reserve	quantities	in	our	year-end	proved	reserve	report	increased,	resulting	in	an	additional	increase	in	our	proved	
reserves	of	2.6	MMBOE.	Between	2011	and	2012,	oil	and	natural	gas	prices	used	to	calculate	year-end	proved	reserves	
decreased,	resulting	in	a	decrease	in	our	proved	reserves	of	6.7	MMBOE.	These	changes	in	quantities	affect	our	DD&A	rate,	
and	the	combined	effect	of	changes	in	quantities	and	commodity	prices	impacts	our	full	cost	ceiling	test	calculation.		
For	example,	we	estimate	that	a	5%	increase	in	our	estimate	of	proved	reserves	quantities	would	have	lowered	our	fourth	
quarter	2012	DD&A	rate	from	$18.20	per	BOE	to	approximately	$17.54	per	BOE,	and	a	5%	decrease	in	our	proved	reserve	
quantities	would	have	increased	our	DD&A	rate	to	approximately	$18.93	per	BOE.	Also,	reserve	quantities	and	their	
ultimate	values,	determined	solely	by	our	lenders,	are	the	primary	factors	in	determining	the	maximum	borrowing	base	
under	our	bank	credit	facility.

Under	full	cost	accounting	rules,	we	are	required	each	quarter	to	perform	a	ceiling	test	calculation.	The	net	capitalized	

costs	of	oil	and	natural	gas	properties	are	limited	to	the	lower	of	unamortized	cost	or	the	cost	center	ceiling.	The	cost	
center	ceiling	is	defined	as:	(1)	the	present	value	of	our	future	net	revenues	from	proved	reserves	before	future	
abandonment	costs	calculated	using	the	average	first-day-of-the-month	oil	and	natural	gas	price	for	each	month	during	the	
12-month	period	then	ended,	discounted	at	10%;	plus	(2)	the	cost	of	properties	not	being	amortized;	plus	(3)	the	lower	of	
cost	or	estimated	fair	value	of	unproved	properties	included	in	the	costs	being	amortized,	if	any;	less	(4)	related	income	tax	
effects.	Our	future	net	revenues	from	proved	reserves	are	not	reduced	for	development	costs	related	to	the	cost	of	drilling		
for	and	developing	CO2	reserves	nor	for	those	related	to	the	cost	of	constructing	CO2	pipelines,	as	those	costs	have	already	
been	incurred	by	the	Company.	Therefore,	we	include	in	the	ceiling	test,	as	a	reduction	of	future	net	revenues,	that		
portion	of	our	capitalized	CO2	costs	related	to	CO2	reserves	and	CO2	pipelines	that	we	estimate	will	be	consumed	in	the	
process	of	producing	our	proved	oil	and	natural	gas	reserves.	The	fair	value	of	our	oil	and	natural	gas	derivative	contracts	
is	not	included	in	the	ceiling	test,	as	we	do	not	designate	these	contracts	as	hedge	instruments	for	accounting	purposes.

We	did	not	have	a	full	cost	pool	ceiling	test	write-down	in	2012,	2011	or	2010.	Crude	oil	prices	increased	between	2010	and	

2011,	but	decreased	slightly	during	2012,	with	first-day-of-the-month	NYMEX	oil	prices	during	2012	averaging	$94.71	per	Bbl	
during	the	year.	First-day-of-the-month	unweighted	average	NYMEX	natural	gas	prices	during	2012	of	$2.85	per	Mcf	were	
lower	than	2011	levels	due	to	declining	prices	early	in	2012.	Natural	gas	prices	began	to	rise	later	in	2012,	ending	the	year	at	
$3.35	per	Mcf	at	December	31,	2012.	Commodity	prices	have	historically	been	volatile	and	are	expected	to	continue	to		
be	so	in	the	future.	If	oil	and	natural	gas	prices	should	decrease,	we	may	be	required	to	record	write-downs	due	to	the	
full	cost	ceiling	test.	The	amount	of	any	future	write-down	is	difficult	to	predict	and	will	depend	upon	the	oil	and	natural		
gas	prices	utilized	in	the	ceiling	test,	the	incremental	proved	reserves	that	might	be	added	during	each	period	and	
additional	capital	spent.

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Tertiary Injection Costs

Our	tertiary	operations	are	conducted	in	reservoirs	that	have	already	produced	significant	amounts	of	oil	over	many	

years;	however,	in	accordance	with	the	rules	for	recording	proved	reserves,	we	cannot	recognize	proved	reserves	associated	
with	enhanced	recovery	techniques	such	as	CO2	injection	until	we	can	demonstrate	production	resulting	from	the	tertiary	
process	or	unless	the	field	is	analogous	to	an	existing	flood.	Our	costs	associated	with	the	CO2	we	produce	(or	acquire)	and	
inject	are	principally	our	cash	out-of-pocket	costs	of	production,	transportation	and	acquisition,	and	to	pay	royalties.

We	capitalize,	as	a	development	cost,	injection	costs	in	fields	that	are	in	their	development	stage,	which	means	we	have	

not	yet	seen	incremental	oil	production	due	to	the	CO2	injections	(i.e.,	a	production	response).	These	capitalized	
development	costs	will	be	included	in	our	unevaluated	property	costs	if	there	are	not	already	proved	tertiary	reserves	in	
that	field.	After	we	see	a	production	response	to	the	CO2	injections	(i.e.,	the	production	stage),	injection	costs	will	be	
expensed	as	incurred,	and	any	previously	deferred	unevaluated	development	costs	will	become	subject	to	depletion	upon	
recognition	of	proved	tertiary	reserves.	During	2012,	2011	and	2010,	we	capitalized	$36.8	million,	$65.3	million	and	$20.5	million,	
respectively,	of	tertiary	injection	costs	associated	with	our	tertiary	projects.

Income Taxes

We	make	certain	estimates	and	judgments	in	determining	our	income	tax	expense	for	financial	reporting	purposes.	
These	estimates	and	judgments	occur	in	the	calculation	of	certain	tax	assets	and	liabilities	that	arise	from	differences	in	
the	timing	and	recognition	of	revenue	and	expense	for	tax	and	financial	reporting	purposes.	Our	federal	and	state	income	
tax	returns	are	generally	not	prepared	or	filed	before	the	consolidated	financial	statements	are	prepared;	therefore,	we	
estimate	the	tax	basis	of	our	assets	and	liabilities	at	the	end	of	each	period	as	well	as	the	effects	of	tax	rate	changes,	tax	
credits	and	net	operating	loss	carryforwards.	Adjustments	related	to	these	estimates	are	recorded	in	our	tax	provision	in	
the	period	in	which	we	finalize	our	income	tax	returns.	Further,	we	must	assess	the	likelihood	that	we	will	be	able	to	
recover	or	utilize	our	deferred	tax	assets	(primarily	our	enhanced	oil	recovery	credits	and	state	loss	carryforwards).	If	
recovery	is	not	likely,	we	must	record	a	valuation	allowance	against	such	deferred	tax	assets	for	the	amount	we	would	not	
expect	to	recover,	which	would	result	in	an	increase	to	our	income	tax	expense.	As	of	December	31,	2012,	we	believe	that	all	
of	our	deferred	tax	assets	recorded	on	our	Consolidated	Balance	Sheet	will	ultimately	be	recovered.	If	our	estimates	and	
judgments	change	regarding	our	ability	to	utilize	our	deferred	tax	assets,	our	tax	provision	would	increase	in	the	period	it	
is	determined	that	recovery	is	not	likely.	A	1%	increase	in	our	effective	tax	rate	would	have	increased	our	calculated	income	
tax	expense	by	approximately	$8.6	million,	$9.2	million	and	$4.8	million	for	the	years	ended	December	31,	2012,	2011	and	
2010,	respectively.	See	Note	6,	Income Taxes, to	the	Consolidated	Financial	Statements	and	see Income Taxes	above	for	
further	information	concerning	our	income	taxes.

Fair Value Estimates

The	FASC	defines	fair	value,	establishes	a	framework	for	measuring	fair	value	and	expands	disclosures	about	fair	value	

measurements.	It	does	not	require	us	to	make	any	new	fair	value	measurements,	but	rather	establishes	a	fair	value	
hierarchy	that	prioritizes	the	inputs	to	the	valuation	techniques	used	to	measure	fair	value.	Level	1	inputs	are	given	the	
highest	priority	in	the	fair	value	hierarchy,	as	they	represent	observable	inputs	that	reflect	unadjusted	quoted	prices	for	
identical	assets	or	liabilities	in	active	markets	as	of	the	reporting	date,	while	Level	3	inputs	are	given	the	lowest	priority,		
as	they	represent	unobservable	inputs	that	are	not	corroborated	by	market	data.	Valuation	techniques	that	maximize	the	
use	of	observable	inputs	are	favored.	See	Note	10,	Fair Value Measurements, to	the	Consolidated	Financial	Statements		
for	disclosures	regarding	our	recurring	fair	value	measurements.

Significant	uses	of	fair	value	measurements	include:

•	 allocation	of	the	purchase	price	paid	to	acquire	businesses	to	the	assets	acquired	and	liabilities	assumed	in	those	

acquisitions;

•	 assessment	of	impairment	of	long-lived	assets;

•	 assessment	of	impairment	of	goodwill;	and

•	

recorded	value	of	derivative	instruments.

 
 
 
 
 
Acquisitions

Under	the	acquisition	method	of	accounting	for	business	combinations,	the	purchase	price	paid	to	acquire	a	business	is	
allocated	to	its	assets	and	liabilities	based	on	the	estimated	fair	values	of	the	assets	acquired	and	liabilities	assumed	as	of	
the	date	of	acquisition.	The	FASC	Fair Value Measurements and Disclosures topic	defines	fair	value	as	the	price	that	would	
be	received	to	sell	an	asset	or	paid	to	transfer	a	liability	in	an	orderly	transaction	between	market	participants	at	the	
measurement	date	(often	referred	to	as	the	“exit	price”).	A	fair	value	measurement	is	based	on	the	assumptions	of	market	
participants	and	not	those	of	the	reporting	entity.	Therefore,	entity-specific	intentions	do	not	impact	the	measurement	of	
fair	value	unless	those	assumptions	are	consistent	with	market	participant	views.

The	excess	of	the	purchase	price	over	the	fair	value	of	the	net	tangible	and	identifiable	intangible	assets	acquired	is	

recorded	as	goodwill.	A	significant	amount	of	judgment	is	involved	in	estimating	the	individual	fair	values	involving	
long-term	tangible	assets,	identifiable	intangible	assets	and	long-term	asset	retirement	obligations.	We	use	all	available	
information	to	estimate	the	fair	values	of	assets	acquired	and	liabilities	assumed	in	an	acquisition	and	engage	a	third-
party	consultant	to	review	certain	assumptions	utilized	in	our	valuations.

Specifically,	the	valuation	of	oil	properties	recoverable	through	enhanced	oil	recovery	requires	us	to	estimate	the	cost	a	
third	party	market	participant	would	pay	for	CO2.	A	third	party’s	economics	and	access	to	CO2	is	substantially	different	in	
our	operating	regions	than	our	own,	as	CO2	is	limited	and	there	may	be	no	known	CO2	available	in	a	given	area	except	
through	our	own	sources.	These	factors	generally	result	in	our	estimation	of	the	cost	of	CO2	to	a	market	participant	being	
higher	than	our	cost.	Because	of	our	strategic	advantage	relating	to	CO2	supply	and	associated	infrastructure,	a	third	
party’s	economics	(the	required	basis	for	allocating	values)	for	a	potential	EOR	flood	will	be	less	than	ours.	Therefore,	we	
cannot	attribute	much,	if	any,	of	our	purchase	price	relating	to	the	future	EOR	flood	to	unevaluated	properties,	even	
though	we	may	have	attributed	value	to	the	future	flood	when	we	made	the	purchase	decision.	As	such,	we	must	attribute	
the	unallocated	purchase	price	to	goodwill,	which	has	resulted	in	our	recognition	of	more	goodwill	than	most	of	our	
industry	peers.

The	fair	values	used	to	allocate	the	purchase	price	of	an	acquisition	are	often	estimated	using	the	expected	present	
value	of	future	cash	flows	method,	which	requires	us	to	project	related	future	cash	inflows	and	outflows	and	apply	an	
appropriate	discount	rate.	The	estimates	used	in	determining	fair	values	are	based	on	assumptions	believed	to	be	
reasonable	but	that	are	inherently	uncertain.	Accordingly,	actual	results	may	differ	from	the	projected	results	used	to	
determine	fair	value.

Impairment Assessment of Goodwill

We	test	goodwill	for	impairment	annually	during	the	fourth	quarter,	or	between	annual	tests	if	an	event	occurs	or	

circumstances	change	that	would	more	likely	than	not	reduce	the	fair	value	of	a	reporting	unit	below	its	carrying	amount.	
The	need	to	test	for	impairment	can	be	based	on	several	indicators,	including	a	significant	reduction	in	prices	of	oil	or	
natural	gas,	a	full-cost	ceiling	write-down	of	oil	and	natural	gas	properties,	unfavorable	adjustments	to	reserves,	significant	
changes	in	the	expected	timing	of	production,	other	changes	to	contracts	or	changes	in	the	regulatory	environment.

Goodwill	is	tested	for	impairment	at	the	reporting	unit	level.	Denbury	applies	SEC	full	cost	accounting	rules,	under	which	
the	acquisition	cost	of	oil	and	gas	properties	is	recognized	on	a	cost	center	basis	(country),	of	which	Denbury	has	only	one	
cost	center	(United	States).	Goodwill	is	assigned	to	this	single	reporting	unit.

In	each	period	that	a	goodwill	impairment	test	is	performed,	we	have	the	option	to	assess	qualitative	factors	to	determine	

if	it	is	more	likely	than	not	that	our	reporting	unit’s	fair	value	is	less	than	its	carrying	amount.	The	following	events		
and	circumstances	are	certain	of	the	qualitative	factors	we	consider	in	evaluating	whether	it	is	more	likely	than	not	the	
fair	value	of	our	reporting	unit	is	less	than	its	carrying	amount:

•	 Macroeconomic	conditions,	such	as	deterioration	in	general	economic	conditions,	limitations	on	accessing	capital,	or	

other	developments	in	equity	and	credit	markets;

•	

Industry	and	market	conditions,	such	as	deterioration	in	the	environment	in	which	we	operate,	including	significant	
declines	in	oil	prices,	inability	to	access	oil	field	equipment	and/or	qualified	personnel	and	regulations	impacting	the	
oil	and	natural	gas	industry,	among	others;

•	 Cost	factors,	such	as	increases	in	power	and	labor	costs;

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•	 Overall	financial	performance,	such	as	negative	or	declining	cash	flows	or	a	decline	in	actual	or	forecasted	revenues	

or	earnings;

•	 Other	relevant	Company-specific	events,	such	as	material	changes	in	management	or	key	personnel,	a	change	in	

strategy	or	litigation;

•	 Material	events,	such	as	a	change	in	the	composition	or	carrying	amount	of	our	reporting	unit’s	net	assets,	including	

acquisitions	and	dispositions;	and

•	 Consideration	of	the	relationship	of	our	market	capitalization	to	our	book	value,	as	well	as	a	sustained	decrease	in	

our	share	price.

If	we	determine	that	it	is	more	likely	than	not	that	our	reporting	unit’s	fair	value	is	less	than	its	carrying	amount,	we	will	

proceed	to	step	1	of	the	2-step	quantitative	goodwill	assessment,	in	which	we	perform	a	calculation	to	compare	the	fair	
value	of	our	reporting	unit	to	its	carrying	cost.	In	any	given	period,	we	have	the	option	to	bypass	the	qualitative	
assessment	and	proceed	directly	to	step	1	of	the	2-step	quantitative	goodwill	impairment	test.

Fair	value	calculated	for	the	purpose	of	testing	for	impairment	of	our	goodwill	is	estimated	using	the	expected	present	

value	of	future	cash	flows	method,	and	comparative	market	prices	and	net	asset	value	when	appropriate.	The	Company	
also	takes	into	consideration	the	Company’s	market	capitalization,	including	a	control	premium.	A	significant	amount		
of	judgment	is	involved	in	performing	these	fair	value	estimates	for	goodwill,	since	the	results	are	based	on	forecasted	
assumptions.	Significant	assumptions	include	projections	of	future	oil	and	natural	gas	prices,	projections	of	estimated	
quantities	of	oil	and	natural	gas	reserves,	projections	of	future	rates	of	production,	timing	and	amount	of	future	
development	and	operating	costs,	projected	availability	and	cost	of	CO2,	projected	recovery	factors	of	tertiary	reserves	and	
risk-adjusted	discount	rates.	We	base	our	fair	value	estimates	on	projected	financial	information	that	we	believe	to	be	
reasonable.	However,	actual	results	may	differ	from	those	projections.

We	completed	our	goodwill	impairment	assessment	during	the	fourth	quarter	of	2012	and	did	not	record	any	goodwill	

impairment	during	2012,	nor	have	we	recorded	a	goodwill	impairment	historically.

Oil and Natural Gas Derivative Contracts

We	enter	into	oil	and	natural	gas	derivative	contracts	to	mitigate	our	exposure	to	commodity	price	risk	associated	with	
future	oil	and	natural	gas	production.	These	contracts	have	historically	consisted	of	options,	in	the	form	of	price	floors	or	
collars,	and	fixed	price	swaps.	We	do	not	designate	these	derivative	commodity	contracts	as	hedge	instruments	for	
accounting	purposes	under	the	FASC	Derivatives and Hedging	topic.	This	means	that	any	changes	in	the	fair	value	of	these	
derivative	contracts	will	be	charged	to	earnings	on	a	quarterly	basis	instead	of	charging	the	effective	portion	to	other	
comprehensive	income	and	the	balance	to	earnings.	While	we	may	experience	more	volatility	in	our	net	income	than	if	we	
were	to	apply	hedge	accounting	treatment	as	permitted	by	the	FASC	Derivatives and Hedging topic,	we	believe	that	for	us	
the	benefits	associated	with	applying	hedge	accounting	do	not	outweigh	the	cost,	time	and	effort	to	comply	with	hedge	
accounting.	During	2012,	2011	and	2010,	we	recognized	expense	(income)	of	$13.0	million,	$(50.1)	million	and	$(53.0)	million,	
respectively,	related	to	non-cash	changes	in	the	fair	market	value	of	our	derivative	contracts.

Use of Estimates

See	Note	1,	Significant Accounting Policies, to	the	Consolidated	Financial	Statements	for	a	discussion	of	our	use		

of	estimates.

Recent Accounting Pronouncements

See	Note	1,	Significant Accounting Policies, to	the	Consolidated	Financial	Statements	for	a	discussion	of	the	effects		

of	recently	issued	and	recently	adopted	accounting	pronouncements.

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FORWARD-LOOKING INFORMATION

The	statements	contained	in	this	Annual	Report	on	Form	10-K	that	are	not	historical	facts,	including,	but	not	limited	to,	

statements	found	in	the	sections	entitled	“Business”	and	“Management’s	Discussion	and	Analysis	of	Financial	Condition	
and	Results	of	Operations,”	are	forward-looking	statements,	as	that	term	is	defined	in	Section	21E	of	the	Securities	and	
Exchange	Act	of	1934,	as	amended,	that	involve	a	number	of	risks	and	uncertainties.	Such	forward-looking	statements	may	
be	or	may	concern,	among	other	things,	forecasted	capital	expenditures,	drilling	activity	or	methods	including	the	timing	
and	location	thereof,	completion	of	pending	acquisitions	and	the	hydrocarbon	reserves	and	production	attributable	to	
them,	timing	of	CO2	injections	and	initial	production	responses	in	tertiary	flooding	projects,	acquisition	plans	and	
proposals	and	dispositions,	development	activities,	finding	costs,	cost	savings,	capital	budgets,	production	rates	and	
volumes	or	forecasts	thereof,	hydrocarbon	reserve	quantities	and	values,	CO2	reserves,	helium	reserves,	potential	reserves,	
percentages	of	recoverable	original	oil	in	place,	hydrocarbon	prices,	pricing	or	cost	assumptions	based	on	current	and	
projected	oil	and	gas	prices,	liquidity,	cash	flows,	availability	of	capital,	borrowing	capacity,	regulatory	matters,	
prospective	legislation	affecting	the	oil	and	gas	industry,	mark-to-market	values,	competition,	long-term	forecasts	of	
production,	finding	costs,	rates	of	return,	estimated	costs,	or	changes	in	costs,	future	capital	expenditures	and	overall	
economics	and	other	variables	surrounding	our	operations	and	future	plans.	Such	forward-looking	statements	generally	
are	accompanied	by	words	such	as	“plan,”	“estimate,”	“expect,”	“predict,”	“anticipate,”	“projected,”	“should,”	“assume,”	
“believe,”	“target”	or	other	words	that	convey	the	uncertainty	of	future	events	or	outcomes.	Such	forward-looking	
information	is	based	upon	management’s	current	plans,	expectations,	estimates	and	assumptions	and	is	subject	to	a	
number	of	risks	and	uncertainties	that	could	significantly	affect	current	plans,	anticipated	actions,	the	timing	of	such	
actions	and	our	financial	condition	and	results	of	operations.	As	a	consequence,	actual	results	may	differ	materially	from	
expectations,	estimates	or	assumptions	expressed	in	or	implied	by	any	forward-looking	statements	made	by	us	or	on	our	
behalf.	Among	the	factors	that	could	cause	actual	results	to	differ	materially	are	fluctuations	of	the	prices	received	or	
demand	for	our	oil	and	natural	gas;	effects	of	our	indebtedness;	success	of	our	risk	management	techniques;	inaccurate	
cost	estimates;	availability	of	and	fluctuations	in	the	prices	of	goods	and	services;	the	uncertainty	of	drilling	results	and	
reserve	estimates;	operating	hazards;	disruption	of	operations	and	damages	from	hurricanes	or	tropical	storms;	acquisition	
risks;	requirements	for	capital	or	its	availability;	conditions	in	the	financial	and	credit	markets;	general	economic	
conditions;	competition	and	government	regulations;	and	unexpected	delays,	as	well	as	the	risks	and	uncertainties	
inherent	in	oil	and	gas	drilling	and	production	activities	or	that	are	otherwise	discussed	in	this	annual	report,	including,	
without	limitation,	the	portions	referenced	above,	and	the	uncertainties	set	forth	from	time	to	time	in	our	other	public	
reports,	filings	and	public	statements.

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Item 7A. Quantitative and Qualitative Disclosures About Market Risk

The	information	required	by	Item	7A	is	set	forth	under	Market Risk Management in	Management’s	Discussion	and	

Analysis	of	Financial	Condition	and	Results	of	Operations.

Item 8. Financial Statements and Supplementary Data

Report	of	Independent	Registered	Public	Accounting	Firm	...................................................................................................................	

Consolidated	Balance	Sheets	...............................................................................................................................................................................	

Consolidated	Statements	of	Operations	.........................................................................................................................................................	

Consolidated	Statements	of	Comprehensive	Operations	.......................................................................................................................	

Consolidated	Statements	of	Cash	Flows	.........................................................................................................................................................	

Consolidated	Statements	of	Changes	in	Stockholders’	Equity	.............................................................................................................	

Notes	to	Consolidated	Financial	Statements

1.	

2.	

3.	

4.	

5.	

6.	

7.	

8.	

9.	

10.	

11.	

12.	

13.	

14.	

15.	

16.	

	Significant	Accounting	Policies	......................................................................................................................................................	

	Acquisitions	and	Divestitures	.........................................................................................................................................................	

	Asset	Retirement	Obligations	.........................................................................................................................................................	

	Property	and	Equipment	..................................................................................................................................................................	

	Long-Term	Debt	.....................................................................................................................................................................................	

	Income	Taxes..........................................................................................................................................................................................	

	Stockholders’	Equity	...........................................................................................................................................................................	

	Stock	Compensation	Plans	..............................................................................................................................................................	

	Derivative	Instruments	and	Hedging	Activities	.....................................................................................................................	

	Fair	Value	Measurements	................................................................................................................................................................	

	Commitments	and	Contingencies	.................................................................................................................................................	

	Supplemental	Information	..............................................................................................................................................................	

	Subsequent	Events	..............................................................................................................................................................................	

	Supplemental	Oil	and	Natural	Gas	Disclosures	(Unaudited)	...........................................................................................	

	Supplemental	CO2	and	Helium	Disclosures	(Unaudited)	....................................................................................................	

	Unaudited	Quarterly	Information	................................................................................................................................................	

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To	the	Board	of	Directors	and	Stockholders	of	Denbury	Resources	Inc.:

In	our	opinion,	the	consolidated	financial	statements	listed	in	the	accompanying	index	present	fairly,	in	all	material	
respects,	the	financial	position	of	Denbury	Resources	Inc.	and	its	subsidiaries	at	December	31,	2012	and	2011,	and	the	
results	of	their	operations	and	their	cash	flows	for	each	of	the	three	years	in	the	period	ended	December	31,	2012	in	
conformity	with	accounting	principles	generally	accepted	in	the	United	States	of	America.	Also	in	our	opinion,	the	Company	
maintained,	in	all	material	respects,	effective	internal	control	over	financial	reporting	as	of	December	31,	2012,	based	on	
criteria	established	in Internal Control – Integrated Framework	issued	by	the	Committee	of	Sponsoring	Organizations	of	the	
Treadway	Commission	(COSO).	The	Company’s	management	is	responsible	for	these	financial	statements,	for	maintaining	
effective	internal	control	over	financial	reporting	and	for	its	assessment	of	the	effectiveness	of	internal	control	over	
financial	reporting,	included	in	Management’s	Report	on	Internal	Control	over	Financial	Reporting	appearing	under	Item	
9A.	Our	responsibility	is	to	express	opinions	on	these	financial	statements	and	on	the	Company’s	internal	control	over	
financial	reporting	based	on	our	integrated	audits.	We	conducted	our	audits	in	accordance	with	the	standards	of	the	
Public	Company	Accounting	Oversight	Board	(United	States).	Those	standards	require	that	we	plan	and	perform	the	audits	
to	obtain	reasonable	assurance	about	whether	the	financial	statements	are	free	of	material	misstatement	and	whether	
effective	internal	control	over	financial	reporting	was	maintained	in	all	material	respects.	Our	audits	of	the	financial	
statements	included	examining,	on	a	test	basis,	evidence	supporting	the	amounts	and	disclosures	in	the	financial	
statements,	assessing	the	accounting	principles	used	and	significant	estimates	made	by	management,	and	evaluating	the	
overall	financial	statement	presentation.	Our	audit	of	internal	control	over	financial	reporting	included	obtaining	an	
understanding	of	internal	control	over	financial	reporting,	assessing	the	risk	that	a	material	weakness	exists,	and	testing	
and	evaluating	the	design	and	operating	effectiveness	of	internal	control	based	on	the	assessed	risk.	Our	audits	also	
included	performing	such	other	procedures	as	we	considered	necessary	in	the	circumstances.	We	believe	that	our	audits	
provide	a	reasonable	basis	for	our	opinions.

A	company’s	internal	control	over	financial	reporting	is	a	process	designed	to	provide	reasonable	assurance	regarding	

the	reliability	of	financial	reporting	and	the	preparation	of	financial	statements	for	external	purposes	in	accordance		
with	generally	accepted	accounting	principles.	A	company’s	internal	control	over	financial	reporting	includes	those	policies	
and	procedures	that	(i)	pertain	to	the	maintenance	of	records	that,	in	reasonable	detail,	accurately	and	fairly	reflect	the	
transactions	and	dispositions	of	the	assets	of	the	company;	(ii)	provide	reasonable	assurance	that	transactions	are	
recorded	as	necessary	to	permit	preparation	of	financial	statements	in	accordance	with	generally	accepted	accounting	
principles,	and	that	receipts	and	expenditures	of	the	company	are	being	made	only	in	accordance	with	authorizations	of	
management	and	directors	of	the	company;	and	(iii)	provide	reasonable	assurance	regarding	prevention	or	timely	
detection	of	unauthorized	acquisition,	use,	or	disposition	of	the	company’s	assets	that	could	have	a	material	effect	on		
the	financial	statements.

Because	of	its	inherent	limitations,	internal	control	over	financial	reporting	may	not	prevent	or	detect	misstatements.	

Also,	projections	of	any	evaluation	of	effectiveness	to	future	periods	are	subject	to	the	risk	that	controls	may		
become	inadequate	because	of	changes	in	conditions,	or	that	the	degree	of	compliance	with	the	policies	or	procedures	
may	deteriorate.

PricewaterhouseCoopers LLP

Dallas,	Texas	
February	28,	2013

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Assets

December 31,

2012 

2011

CONSOLIDATED BALANCE SHEETS

In thousands, except par value and share data 

Current assets
	 Cash	and	cash	equivalents	
	 Restricted	cash	
	 Accrued	production	receivable	
	 Trade	and	other	receivables,	net	
	 Short-term	investments	
	 Derivative	assets	
	 Deferred	tax	assets	
	 Other	current	assets	

	 Total	current	assets	

Property and equipment
	 Oil	and	natural	gas	properties	(using	full	cost	accounting)

	 Proved	
	 Unevaluated	
	 CO2	properties	
	 Pipelines	and	plants	
	 Other	property	and	equipment	
	 Less	accumulated	depletion,	depreciation,	amortization	and	impairment	

	 Net	property	and	equipment	

Liabilities and Stockholders’ Equity

	 Derivative	assets	
	 Goodwill	
	 Other	assets	

	 Total	assets	

Current liabilities
	 Accounts	payable	and	accrued	liabilities	
	 Oil	and	gas	production	payable	
	 Derivative	liabilities	
	 Current	maturities	of	long-term	debt	

	 Total	current	liabilities	

Long-term liabilities
	 Long-term	debt,	net	of	current	portion	
	 Asset	retirement	obligations	
	 Derivative	liabilities	
	 Deferred	taxes	
	 Other	liabilities	

	 Total	long-term	liabilities	

$	
98,511	
	 1,050,015	
253,131	
81,971	
—	
19,477	
29,156	
10,493	
	 1,542,754	

	 6,963,211	
809,154	
	 1,032,653	
	 2,035,126	
417,207	
(3,180,241)	
	 8,077,110	
36	
	 1,283,590	
235,852	
$	11,139,342	

$	

414,668	
161,945	
2,842	
36,966	
616,421	

	 3,104,462	
102,730	
23,781	
	 2,153,452	
23,607	
	 5,408,032	

$	

18,693
—
294,689
164,446
86,682
47,402
50,156
22,045
684,113

	 7,026,579
	 1,157,106
596,003
	 1,701,756
157,674
(2,627,493)
	 8,011,625
29
	 1,236,318
252,339
$	10,184,424

$	

429,336
197,092
26,523
8,316
661,267

	 2,669,729
88,726
18,872
	 1,918,576
20,756
	 4,716,659

Commitments and contingencies (Note 11) 
Stockholders’ equity
	 Preferred	stock,	$.001	par	value,	25,000,000	shares	authorized,	none	issued	and	outstanding	 	
	 Common	stock,	$.001	par	value,	600,000,000	shares	authorized;	406,163,194	and	402,946,070	shares		

—	

—

issued,	respectively	

	 Paid-in	capital	in	excess	of	par	
	 Retained	earnings	
	 Accumulated	other	comprehensive	loss	
	 Treasury	stock,	at	cost,	30,601,262	and	13,965,673	shares,	respectively	

	 Total	stockholders’	equity	
	 Total	liabilities	and	stockholders’	equity	

See	accompanying	Notes	to	Consolidated	Financial	Statements.

406	
	 3,136,461	
	 2,434,835	
(348)	
(456,465)	
	 5,114,889	
$	11,139,342	

403
	 3,090,374
	 1,909,475
(418)
(193,336)
	 4,806,498
$	10,184,424

 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
CONSOLIDATED STATEMENTS OF OPERATIONS

In thousands, except per share data 

Revenues and other income
	 Oil,	natural	gas,	and	related	product	sales	
	 CO2	sales	and	transportation	fees		
	 Gain	on	sale	of	interests	in	Genesis	
Interest	income	and	other	income	
	 Total	revenues	and	other	income	

Expenses
	 Lease	operating	expenses	
	 Marketing	expenses	
	 CO2	discovery	and	operating	expenses	
	 Taxes	other	than	income	
	 General	and	administrative	expenses	

Interest,	net	of	amounts	capitalized	of	$77,432,	$61,586	and	$66,815,	respectively	

	 Depletion,	depreciation	and	amortization	
	 Derivatives	expense	(income)	
	 Loss	on	early	extinguishment	of	debt	
	 Transaction	and	other	costs	related	to	the	Encore	Merger	

Impairment	of	assets	

	 Other	expenses	

	 Total	expenses	

Income	before	income	taxes	
Income	tax	provision	
Consolidated	net	income	
	 Less:	net	income	attributable	to	noncontrolling	interest	
Net	income	attributable	to	Denbury	stockholders		

  Year Ended December 31,

 2012 

2011 

2010

$	2,409,867	
26,453	
—	
20,152	
	 2,456,472	

532,359	
52,836	
14,694	
160,016	
144,019	
153,581	
507,538	
(4,834)	
—	
—	
17,515	
21,891	
	 1,599,615	
856,857	
331,497	
525,360	
—	
$	 525,360	

$	2,269,151	
22,711	
—	
17,462	
	 2,309,324	

507,397	
26,047	
14,258	
147,534	
125,525	
164,360	
409,196	
(52,497)	
16,131	
4,377	
22,951	
—	
	 1,385,279	
924,045	
350,712	
573,333	
—	
$	 573,333	

$	1,793,292
19,204
101,537
7,758
	 1,921,791

470,364
31,036
7,801
120,541
134,121
176,113
434,307
(23,833)
—
92,271
—
—
	 1,442,721
479,070
193,543
285,527
(13,804)
$	 271,723

Net	income	per	common	share	–	basic	

$	

1.36	

$	

1.45	

$	

0.73

Net	income	per	common	share	–	diluted	

1.35	

1.43	

0.72

Weighted	average	common	shares	outstanding
	 Basic	
	 Diluted	 	

See	accompanying	Notes	to	Consolidated	Financial	Statements.

385,205	
388,938	

396,023	
400,958	

370,876
376,255

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE OPERATIONS

In thousands 

Consolidated net income 
  Other comprehensive income (loss), net of income tax:

Interest rate lock derivative contracts reclassified to income,  
  net of tax of $43, $43 and $43, respectively  

  Change in deferred hedge loss on interest rate swaps, net of tax benefit of $62 

  Total other comprehensive income (loss) 
Comprehensive income 
  Less: comprehensive income attributable to noncontrolling interest 
Comprehensive income attributable to Denbury stockholders 

Year Ended December 31,

 2012 

2011 

2010

$ 525,360 

$ 573,333 

$ 285,527

70 
— 
70 
  525,430 
— 
$ 525,430 

70 
— 
70 
  573,403 
— 
$ 573,403 

69
(83)
(14)
  285,513
(13,727)
$ 271,786

See	accompanying	Notes	to	Consolidated	Financial	Statements.

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CONSOLIDATED STATEMENTS OF CASH FLOWS

In thousands 

Cash flow from operating activities:
	 Consolidated	net	income	
	 Adjustments	to	reconcile	consolidated	net	income	to	cash	flow		

from	operating	activities:

	 Depletion,	depreciation	and	amortization	
	 Deferred	income	taxes	
	 Gain	on	sale	of	interests	in	Genesis	
	 Stock-based	compensation	
	 Noncash	fair	value	derivative	adjustments	
	 Loss	on	early	extinguishment	of	debt	
	 Amortization	of	debt	issuance	costs	and	discounts	

Impairment	of	assets	

	 Other,	net	

	 Changes	in	assets	and	liabilities,	net	of	effects	from	acquisitions:

	 Accrued	production	receivable	 	
	 Trade	and	other	receivables	
	 Other	current	and	long-term	assets	
	 Accounts	payable	and	accrued	liabilities	 	
	 Oil	and	natural	gas	production	payable	
	 Other	liabilities	

Net	cash	provided	by	operating	activities	

Cash flow used for investing activities:

	 Oil	and	natural	gas	capital	expenditures	 	
	 Acquisitions	of	oil	and	natural	gas	properties	
	 Cash	paid	in	Encore	Merger	and	Riley	Ridge	acquisitions	 	
	 Cash	received	in	Bakken	Exchange	Transaction	
	 CO2	capital	expenditures	
	 Pipelines	and	plants	capital	expenditures	
	 Purchases	of	other	assets	
	 Net	proceeds	from	sale	of	interests	in	Genesis	
	 Net	proceeds	from	sales	of	oil	and	natural	gas	properties	and	equipment		
	 Net	proceeds	from	sale	of	short-term	investments	
	 Other		

Net	cash	used	for	investing	activities	

Cash flow provided by (used for) financing activities:

	 Bank	repayments	
	 Bank	borrowings	
	 Repayment	of	senior	subordinated	notes	 	
	 Premium	paid	on	repayment	of	senior	subordinated	notes	
	 Net	proceeds	from	issuance	of	senior	subordinated	notes		
	 Costs	of	debt	financing	
	 ENP	distributions	to	noncontrolling	interest	 	
	 Common	stock	repurchase	program	
	 Other		

Net	cash	provided	by	(used	for)	financing	activities	
Net	increase	(decrease)	in	cash	and	cash	equivalents	
Cash	and	cash	equivalents	at	beginning	of	year	
Cash	and	cash	equivalents	at	end	of	year	

See	accompanying	Notes	to	Consolidated	Financial	Statements.

  Year Ended December 31,

 2012 

2011 

2010

$	 525,360	

$	

573,333	

$	 285,527

507,538	
255,743	
—	
29,310	
13,159	
—	
14,695	
17,515	
16,804	

36,234	
45,836	
7,688	
5,828	
(23,460)	
(41,359)	
	 1,410,891	

	 (1,122,615)	
(156,082)	
—	
281,669	
(131,043)	
(330,417)	
(25,765)	
—	
34,750	
83,545	
(10,883)	
	 (1,376,841)	

	 (1,555,000)	
	 1,870,000	
—	
—	
—	
(34)	
—	
(251,480)	
(17,718)	
45,768	
79,818	
18,693	
98,511	

$	

409,196	
342,463	
—	
33,190	
(50,008)	
16,131	
16,954	
22,951	
(4,302)	

(74,781)	
(55,470)	
(15,817)	
(35,462)	
54,391	
(27,955)	
	 1,204,814	

(1,082,853)	
(35,305)	
(199,263)	
—	
(84,789)	
(236,133)	
(28,838)	
—	
69,370	
—	
(8,147)	
(1,605,958)	

(330,000)	
715,000	
(525,000)	
(13,137)	
400,000	
(13,123)	
—	
(195,227)	
(545)	
37,968	
(363,176)	
381,869	
18,693	

$	

	 434,307
	 160,349
(101,537)
35,366
(55,445)
—
17,876
—
(2,144)

2,426
24,977
(4,119)
48,549
15,565
(5,886)
	 855,811

(671,574)
(25,672)
(947,241)
—
(93,556)
(207,536)
(28,684)
	 162,619
	 1,458,029
—
(1,165)
(354,780)

	(1,530,000)
	 1,114,000
(609,424)
(7,213)
	 1,000,000
(76,251)
(36,738)
—
5,873
(139,753)
	 361,278
20,591
$	 381,869

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4,868	

266	
	 2,085,681	
—	
1	
—	
—	
39,791	

—	

—	
—	
—	
—	
—	
—	
—	

—	
—	

—	

—	
—	
—	
—	
—	
—	
—	

—	
—	

4,603	
—	

—	
	 515,210	

4,603
515,210

—	
—	
—	
—	
78,524	
441,406	

—	
—	
—	
—	
(1,284)	
(9,683)	

—	
—	
69	
271,723	
	 4,380,707	
(9,683)	

(36,738)	
(492,193)	
(83)	
13,804	
—	
—	

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

Common Stock 
  ($.001 Par Value)   
Amount 

Shares  

Paid-In 
Capital in 
Excess of 
Par 

Accumulated 
Other 

Retained  Comprehensive 
Earnings 

Income (Loss)  Shares 

 Treasury Stock 
(at cost) 

Denbury 

  Stockholders’  Noncontrolling 

Amount  

Equity 

Interest 

	 261,929,292	
—	

$	262	
	 —	

$	 910,540	
—	

$	1,064,419	
—	

$	(557)	
	 —	

156,284	
413,869	

$	

(2,427)	
(6,729)	

$	1,972,237	
(6,729)	

$	

	 —	

(491,629)	

7,872	

8,197	

	 —	

	 —	
	 —	
	 —	
	 —	
	 —	
	 —	
	 —	

	 —	
	 —	

	 —	
	 —	
69	
	 —	
	 (488)	
	 —	

—	

—	

—	
—	
—	
—	
—	
—	
—	

—	
—	

—	
—	
—	
271,723	
	 1,336,142	
—	

—	
—	

—	

—	
—	
—	
—	
—	

Dollar amounts in thousands 

Balance	–	December	31,	2009	
Repurchase	of	common	stock	
Issued	pursuant	to	employee		

stock	purchase	plan	

—	

	 —	

325	

Issued	pursuant	to	employee		

stock	option	plan	

999,077	

1	

4,867	

Issued	pursuant	to	directors’		

compensation	plan	

16,118	
Issued	pursuant	to	Encore	Merger	 	 135,170,505	
1,070,686	
Encore	restricted	stock	grants	
960,597	
Restricted	stock	grants	
(301,735)	
Restricted	stock	grants	–	forfeited	 	
446,493	
Performance-based	shares	issued	 	
Stock-based	compensation	
—	
Income	tax	benefit	from	equity		

awards	

ENP	revaluation	at	Encore	Merger	
ENP	cash	distributions	to		
noncontrolling	interest	

Sale	of	ENP	
Derivative	contracts,	net	
Consolidated	net	income	
Balance	–	December	31,	2010	
Repurchase	of	common	stock	
Issued	pursuant	to	employee		

stock	purchase	plan	
Stock	Repurchase	Program	
Issued	pursuant	to	employee		

—	
—	

—	
—	
—	
—	
	 400,291,033	
—	

11,330	
—	

	 —	
	 135	
1	
1	
	 —	
	 —	
	 —	

	 —	
	 —	

	 —	
	 —	
	 —	
	 —	
	 400	
	 —	

	 —	
	 —	

266	
	 2,085,546	
(1)	
—	
—	
—	
39,791	

4,603	
—	

—	
—	
—	
—	
	 3,045,937	
—	

(1,623)	
—	

stock	option	plan	

1,200,759	

1	

4,685	

Issued	pursuant	to	directors’		

compensation	plan	
Restricted	stock	grants	
Restricted	stock	grants	–	forfeited	
Performance-based	shares	issued		
Stock-based	compensation	
Income	tax	benefit	from	equity		

19,745	
1,134,627	
(157,811)	
446,387	
—	

awards	

Derivative	contracts,	net	
Net	income	
Balance	–	December	31,	2011	
Repurchase	of	common	stock	
Issued	pursuant	to	employee		

stock	purchase	plan	
Stock	Repurchase	Program	
Issued	pursuant	to	employee		

—	
—	
—	
	 402,946,070	
—	

—	
—	

	 —	
1	
	 —	
1	
	 —	

	 —	
	 —	
	 —	
	 403	
	 —	

	 —	
	 —	

Issued	pursuant	to	directors’		

compensation	plan	
Restricted	stock	grants	
Restricted	stock	grants	–	forfeited	
Performance-based	shares	issued		
Stock-based	compensation	
Income	tax	benefit	from	equity		

19,648	
1,909,739	
(261,762)	
120,190	
—	

awards	

Derivative	contracts,	net	
Net	income	
Balance	–	December	31,	2012	

—	
—	
—	
	 406,163,194	

	 —	
2	
	 —	
	 —	
	 —	

	 —	
	 —	
	 —	
$	406	

309	
—	
—	
—	
40,187	

1,607	
—	

321	
(1)	
—	
—	
37,897	

stock	option	plan	

1,429,309	

1	

6,022	

See	accompanying	Notes	to	Consolidated	Financial	Statements.

879	
—	
—	
	 3,090,374	
—	

—	
—	
573,333	
	 1,909,475	
—	

	 —	
	 —	

(666,867)	
	 14,112,610	

12,858	
	 (195,227)	

11,235	
(195,227)	

	 —	

	 —	
	 —	
	 —	
	 —	
	 —	

	 —	
70	
	 —	
	 (418)	
	 —	

—	

—	
—	
—	
—	
—	

—	

—	
—	
—	
—	
—	

4,686	

309	
1	
—	
1	
40,187	

—	
—	
—	
	 13,965,673	
472,966	

—	
—	
—	
	 (193,336)	
(8,125)	

879	
70	
573,333	
	 4,806,498	
(8,125)	

—	
—	

—	

—	
—	
—	
—	
—	

	 —	
	 —	

(815,385)	
	 16,978,008	

11,653	
	 (266,657)	

13,260	
(266,657)	

	 —	

	 —	
	 —	
	 —	
	 —	
	 —	

—	

—	
—	
—	
—	
—	

—	

—	
—	
—	
—	
—	

6,023	

321	
1	
—	
—	
37,897	

241	
—	
—	
$	3,136,461	

—	
—	
525,360	
$	2,434,835	

	 —	
70	
	 —	
$	(348)	

—	
—	
—	
	 30,601,262	

—	
—	
—	
$	(456,465)	

241	
70	
525,360	
$	5,114,889	

$	

Total
Equity

$	1,972,237
(6,729)

8,197

4,868

266
	 2,085,681
—
1
—
—
39,791

(36,738)
(492,193)
(14)
285,527
	 4,380,707
(9,683)

11,235
(195,227)

4,686

309
1
—
1
40,187

879
70
573,333
	 4,806,498
(8,125)

13,260
(266,657)

6,023

321
1
—
—
37,897

241
70
525,360
$	5,114,889

—	
—	

—	

—	

—	
—	
—	
—	
—	
—	
—	

—	
—	

—	

—	
—	
—	
—	
—	

—	
—	
—	
—	
—	

—	
—	

—	

—	
—	
—	
—	
—	

—	
—	
—	
—	

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Note 1. Significant Accounting Policies

Organization and Nature of Operations

Denbury	Resources	Inc.,	a	Delaware	corporation,	is	a	growing	independent	oil	and	natural	gas	company.	We	are	the	

largest	combined	oil	and	natural	gas	producer	in	both	Mississippi	and	Montana,	own	the	largest	reserves	of	CO2	used	for	
tertiary	oil	recovery	east	of	the	Mississippi	River,	and	hold	significant	operating	acreage	in	the	Rocky	Mountain	and		
Gulf	Coast	regions.	Our	goal	is	to	increase	the	value	of	our	acquired	properties	through	a	combination	of	exploitation,	
drilling	and	proven	engineering	extraction	practices,	with	the	most	significant	emphasis	relating	to	CO2	tertiary	
recovery	operations.

Encore  Merger.  On	March	9,	2010,	we	acquired	Encore	Acquisition	Company	(“Encore”),	pursuant	to	an	Agreement	and	

Plan	of	Merger	(the	“Encore	Merger	Agreement”),	under	which	Encore	was	merged	with	and	into	Denbury	(the	“Encore	
Merger”),	with	Denbury	surviving	the	Encore	Merger	following	approval	by	the	stockholders	of	both	Denbury	and	Encore,	
closing	of	a	new	revolving	credit	facility	as	part	of	the	financing	for	the	Encore	Merger,	and	satisfaction	of	other	conditions	
precedent.	The	Encore	Merger	provided	Encore	stockholders	stock	and/or	cash	and	included	the	assumption	of	Encore’s	
debt	by	Denbury.	Denbury	has	consolidated	Encore’s	results	of	operations	since	the	March	9,	2010	acquisition	date.	See	
Note	2, Acquisitions and Divestitures,	for	more	information.

Principles of Reporting and Consolidation

The	consolidated	financial	statements	herein	have	been	prepared	in	accordance	with	accounting	principles	generally	
accepted	in	the	United	States	(“GAAP”)	and	include	the	accounts	of	Denbury	and	entities	in	which	we	hold	a	controlling	
financial	interest.	Undivided	interests	in	oil	and	gas	joint	ventures	are	consolidated	on	a	proportionate	basis.	Investments	
in	non-controlled	entities	over	which	we	exercise	significant	influence	are	accounted	for	under	the	equity	method.	Other	
investments	are	carried	at	cost.	All	intercompany	balances	and	transactions	have	been	eliminated.

From	March	9,	2010	through	December	31,	2010,	we	owned	approximately	46%	of	Encore	Energy	Partners	LP	(“ENP”)	
outstanding	common	units	and	100%	of	Encore	Energy	Partners	GP	LLC	(“ENP	GP	LLC”)	membership	interests,	which	was	
ENP’s	general	partner.	Considering	the	presumption	of	control	of	ENP	GP	LLC	in	accordance	with	the	Consolidation	topic	of	
the	Financial	Accounting	Standards	Board	Codification	(“FASC”),	the	results	of	operations	and	cash	flows	of	ENP	were	
consolidated	with	those	of	Denbury	for	this	period.	On	December	31,	2010,	we	sold	all	of	our	ownership	interests	in	ENP	
and	ENP	GP	LLC;	therefore,	we	did	not	consolidate	ENP	in	our	Consolidated	Balance	Sheet	as	of	December	31,	2010.	As	
presented	in	the	accompanying	Consolidated	Statement	of	Operations	for	the	year	ended	December	31,	2010,	“Net	income	
attributable	to	noncontrolling	interest”	of	$13.8	million	represents	ENP’s	results	of	operations	attributable	to	limited	
partners	other	than	Denbury	for	the	portion	of	the	year	for	which	we	consolidated	ENP.

Use of Estimates

The	preparation	of	financial	statements	in	conformity	with	GAAP	requires	management	to	make	estimates	and	
assumptions	that	affect	the	reported	amount	of	certain	assets	and	liabilities	and	disclosure	of	contingent	assets	and	
liabilities	at	the	date	of	the	financial	statements	and	the	reported	amounts	of	revenues	and	expenses	during	each	
reporting	period.	Management	believes	its	estimates	and	assumptions	are	reasonable;	however,	such	estimates	and	
assumptions	are	subject	to	a	number	of	risks	and	uncertainties	that	may	cause	actual	results	to	differ	materially	from	such	
estimates.	Significant	estimates	underlying	these	financial	statements	include:	(1)	the	fair	value	of	financial	derivative	
instruments;	(2)	the	estimated	quantities	of	proved	oil	and	natural	gas	reserves	used	to	compute	depletion	of	oil	and	
natural	gas	properties,	the	related	present	value	of	estimated	future	net	cash	flows	therefrom	and	the	ceiling	test;	(3)	the	
estimated	quantities	of	proved	and	probable	CO2	reserves	used	to	compute	depletion	of	CO2	properties;	(4)	accruals		
related	to	oil	and	natural	gas	sales	volumes	and	revenues,	capital	expenditures	and	lease	operating	expenses;	(5)	the	
estimated	costs	and	timing	of	future	asset	retirement	obligations;	(6)	estimates	made	in	the	calculation	of	income	taxes;	
and	(7)	estimates	made	in	determining	the	fair	values	for	purchase	price	allocations,	including	goodwill.	While	management	
is	not	aware	of	any	significant	revisions	to	any	of	its	estimates,	there	will	likely	be	future	revisions	to	its	estimates	
resulting	from	matters	such	as	revisions	in	estimated	oil	and	natural	gas	volumes,	changes	in	ownership	interests,	payouts,	
joint	venture	audits,	re-allocations	by	purchasers	or	pipelines,	or	other	corrections	and	adjustments	common	in	the	oil		
and	natural	gas	industry,	many	of	which	require	retroactive	application.	These	types	of	adjustments	cannot	be	currently	
estimated	and	will	be	recorded	in	the	period	in	which	the	adjustment	occurs.

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Reclassifications

Certain	prior	period	amounts	have	been	reclassified	to	conform	with	the	current	year	presentation.	Such	

reclassifications	had	no	impact	on	our	reported	net	income,	current	assets,	total	assets,	current	liabilities,	total	liabilities	
or	stockholders’	equity.

Cash Equivalents

We	consider	all	highly	liquid	investments	to	be	cash	equivalents	if	they	have	maturities	of	three	months	or	less	at	the	

date	of	purchase.

Restricte d Cash

Restricted	cash	at	December	31,	2012	consists	of	proceeds	from	the	exchange	of	oil	and	gas	properties	with	Exxon	Mobil	

Corporation	and	its	wholly-owned	subsidiary	XTO	Energy	Inc.	(see	Note	2,	Acquisitions and Divestitures)	being	held	by	a	
qualified	intermediary	through	three	separate	financial	institutions	and	which	are	restricted	for	application	towards	
future	potential	acquisitions	to	facilitate	an	anticipated	like-kind-exchange	transaction	for	federal	income	tax	purposes.	
We	manage	and	control	counterparty	credit	risk	related	to	this	restricted	cash	using	a	trust	agreement,	whereby	the	assets	
held	in	trust	must	be	segregated	from	the	financial	institution’s	assets,	and	in	the	event	of	a	bankruptcy,	the	funds	would	
not	be	subject	to	payments	to	the	creditors	of	the	financial	institution.

Short-term Investments

Short-term	investments	represent	available-for-sale	securities	recorded	at	fair	value	with	any	unrealized	gains	or	losses	

included	in	accumulated	other	comprehensive	income.	At	December	31,	2011,	short-term	investments	consisted	entirely		
of	our	investment	in	Vanguard	Natural	Resources	LLC	(“Vanguard”)	common	units	obtained	as	partial	consideration	for	the	
sale	of	our	interests	in	ENP	to	a	subsidiary	of	Vanguard	on	December	31,	2010	(see	Note	2, Acquisitions and Divestitures).	
Our	original	cost	basis	of	this	investment	was	$93.0	million.	We	received	distributions	of	$7.2	million	on	the	Vanguard	
common	units	we	owned	for	the	year	ended	December	31,	2011,	which	are	included	in	“Interest	income	and	other	income”	
on	our	Consolidated	Statements	of	Operations.	Due	to	the	decline	in	the	market	value	of	this	investment	and	the	
expectation	that	the	investment	would	not	recover	its	cost	basis	prior	to	the	time	of	sale,	we	recorded	a	$6.3	million	
“other-than-temporary”	impairment	loss	on	this	investment	for	the	year	ended	December	31,	2011,	which	is	included		
in	“Impairment	of	assets”	on	our	Consolidated	Statements	of	Operations.	During	January	2012,	we	sold	our	investment	in	
Vanguard	for	cash	consideration	of	$83.5	million,	net	of	related	transaction	fees.	The	Company	recognized	a	pretax	loss		
on	the	sale	of	$3.1	million,	which	is	included	in	“Other	expenses”	on	our	Consolidated	Statements	of	Operations	for	the	year	
ended	December	31,	2012.

Oil and Natural Gas Properties

Capitalized  Costs.  We	follow	the	full	cost	method	of	accounting	for	oil	and	natural	gas	properties.	Under	this	method,	

all	costs	related	to	acquisitions,	exploration	and	development	of	oil	and	natural	gas	reserves	are	capitalized	and	
accumulated	in	a	single	cost	center	representing	our	activities,	which	are	undertaken	exclusively	in	the	United	States.	Such	
costs	include	lease	acquisition	costs,	geological	and	geophysical	expenditures,	lease	rentals	on	undeveloped	properties,	
costs	of	drilling	both	productive	and	nonproductive	wells,	capitalized	interest	on	qualifying	projects,	and	general	and	
administrative	expenses	directly	related	to	exploration	and	development	activities,	and	do	not	include	any	costs	related	to	
production,	general	corporate	overhead	or	similar	activities.	We	assign	the	purchase	price	of	oil	and	natural	gas	properties	
we	acquire	to	proved	and	unevaluated	properties	based	on	the	estimated	fair	values	as	defined	in	the	FASC	Fair Value 
Measurements and Disclosures topic.	Proceeds	received	from	disposals	are	credited	against	accumulated	costs	except	
when	the	sale	represents	a	significant	disposal	of	reserves,	in	which	case	a	gain	or	loss	would	be	recognized.	A	disposal	of	
twenty-five	percent	or	more	of	our	proved	reserves	would	be	considered	significant.

Depletion  and  Depreciation.  The	costs	capitalized,	including	production	equipment	and	future	development	costs,	are	
depleted	or	depreciated	using	the	unit-of-production	method,	based	on	proved	oil	and	natural	gas	reserves	as	determined	
by	independent	petroleum	engineers.	Oil	and	natural	gas	reserves	are	converted	to	equivalent	units	on	a	basis	of	6,000	
cubic	feet	of	natural	gas	to	one	barrel	of	crude	oil.	The	depletion	and	depreciation	rate	per	BOE	associated	with	our	oil	and	
gas	producing	activities	was	$18.69	in	2012,	$16.42	in	2011	and	$15.82	in	2010.

Under	full	cost	accounting,	we	may	exclude	certain	unevaluated	costs	from	the	amortization	base	pending	

determination	of	whether	proved	reserves	can	be	assigned	to	such	properties.	The	costs	classified	as	unevaluated	are	
transferred	to	the	full	cost	amortization	base	as	the	properties	are	developed,	tested	and	evaluated.

 
 
 
 
 
Ceiling  Test.  The	net	capitalized	costs	of	oil	and	natural	gas	properties	are	limited	to	the	lower	of	unamortized	cost	or	

the	cost	center	ceiling.	The	cost	center	ceiling	is	defined	as:	(1)	the	present	value	of	estimated	future	net	revenues	from	
proved	reserves	before	future	abandonment	costs	(discounted	at	10%),	based	on	the	average	first-day-of-the-month	oil	and	
natural	gas	price	for	each	month	during	the	12-month	period	prior	to	the	end	of	a	particular	reporting	period;	plus	(2)	the	
cost	of	properties	not	being	amortized;	plus	(3)	the	lower	of	cost	or	estimated	fair	value	of	unproved	properties	included	in	
the	costs	being	amortized,	if	any;	less	(4)	related	income	tax	effects.	Our	future	net	revenues	from	proved	reserves	are		
not	reduced	for	development	costs	related	to	the	cost	of	drilling	for	and	developing	CO2	reserves	nor	those	related	to	the	
cost	of	constructing	CO2	pipelines,	as	those	costs	have	previously	been	incurred	by	the	Company.	Therefore,	we	include		
in	the	ceiling	test,	as	a	reduction	of	future	net	revenues,	that	portion	of	our	capitalized	CO2	costs	related	to	CO2	reserves	
and	CO2	pipelines	that	we	estimate	will	be	consumed	in	the	process	of	producing	our	proved	oil	and	natural	gas	reserves.	
The	fair	value	of	our	oil	and	natural	gas	derivative	contracts	is	not	included	in	the	ceiling	test,	as	we	do	not	designate	
these	contracts	as	hedge	instruments	for	accounting	purposes.	The	cost	center	ceiling	test	is	prepared	quarterly.	We	did	
not	have	a	ceiling	test	write-down	during	the	years	ended	December	31,	2012,	2011	or	2010.

Joint  Interest  Operations.  Substantially	all	of	our	oil	and	natural	gas	exploration	and	production	activities	are	

conducted	jointly	with	others.	These	financial	statements	reflect	only	our	proportionate	interest	in	such	activities,	and	any	
amounts	due	from	other	partners	are	included	in	trade	receivables.

Tertiary  Injection  Costs.  Our	tertiary	operations	are	conducted	in	reservoirs	that	have	already	produced	significant	
amounts	of	oil	over	many	years;	however,	in	accordance	with	the	SEC	rules	and	regulations	for	recording	proved	reserves,	
we	cannot	recognize	proved	reserves	associated	with	enhanced	recovery	techniques,	such	as	CO2	injection,	until	there	is	a	
production	response	to	the	injected	CO2,	or	unless	the	field	is	analogous	to	an	existing	flood.

We	capitalize,	as	a	development	cost,	injection	costs	in	fields	that	are	in	their	development	stage,	which	means	we	

have	not	yet	seen	incremental	oil	production	due	to	the	CO2	injections	(i.e.,	a	production	response).	These	capitalized	
development	costs	are	included	in	our	unevaluated	property	costs	if	there	are	not	already	proved	tertiary	reserves	in	that	
field.	After	we	see	a	production	response	to	the	CO2	injections	(i.e.,	the	production	stage),	injection	costs	are	expensed		
as	incurred,	and	once	proved	reserves	are	recognized,	previously	deferred	unevaluated	development	costs	become	subject	
to	depletion.

CO2 Properties

We	own	and	produce	CO2	reserves,	a	non-hydrocarbon	resource,	that	are	used	in	our	tertiary	oil	recovery	operations	on	

our	own	behalf	and	on	behalf	of	other	interest	owners	in	enhanced	recovery	fields,	with	a	portion	sold	to	third-party	
industrial	users.	We	record	revenue	from	our	sales	of	CO2	to	third	parties	when	it	is	produced	and	sold.	Expenses	related	to	
the	production	of	CO2	are	allocated	between	volumes	sold	to	third	parties	and	volumes	consumed	internally	that	are	
directly	related	to	our	tertiary	production.	The	expenses	related	to	third-party	sales	are	recorded	in	“CO2	discovery	and	
operating	expenses,”	and	the	expenses	related	to	internal	use	are	recorded	in	“Lease	operating	expenses”	in	the	
Consolidated	Statements	of	Operations,	or	are	capitalized	as	oil	and	gas	properties	in	our	Consolidated	Balance	Sheets,	
depending	on	the	status	of	floods	that	receive	the	CO2	(see	Tertiary Injection Costs	above	for	further	discussion).

During	2010	and	2011,	we	acquired	interests	in	the	Riley	Ridge	Federal	Unit	(“Riley	Ridge”),	in	which	helium	and	CO2	

(non-hydrocarbon	resources)	as	well	as	natural	gas	(a	hydrocarbon	resource)	are	present.	It	is	not	possible	to	separately	
identify	the	capitalized	costs	related	to	the	development	of	each	product	in	the	commingled	gas	stream;	thus,	these	costs	
are	allocated	to	each	product	based	on	the	relative	future	revenue	value	of	each	product	line	and	classified	accordingly		
on	the	Consolidated	Balance	Sheets.

During	2010,	we	revised	our	capitalization	policies	for	CO2	properties.	Previously,	we	accounted	for	our	CO2	source	

properties	in	a	manner	similar	to	our	method	of	accounting	for	oil	and	natural	gas	properties,	as	the	process	and	activities	
to	identify,	develop	and	produce	CO2	reserves	are	virtually	identical	to	those	used	to	identify,	develop	and	produce	oil		
and	natural	gas	reserves.	However,	because	CO2	is	not	a	hydrocarbon,	it	is	excluded	from	the	scope	of	FASC	Topic	932,	
Extractive Industries – Oil and Gas; therefore,	we	are	precluded	from	accounting	for	our	CO2	operations	in	accordance	with	
FASC	Topic	932.	Accordingly,	commencing	in	July	2010,	costs	incurred	to	search	for	CO2	are	expensed	as	incurred	until		
proved	or	probable	reserves	are	established.	Once	proved	or	probable	reserves	are	established,	costs	incurred	to	obtain	
those	reserves	are	capitalized	and	classified	as	“CO2	properties”	on	our	Consolidated	Balance	Sheets.	Capitalized	CO2	is	
aggregated	by	geologic	formation	and	depleted	on	a	unit-of-production	basis	over	proved	and	probable	reserves.	The	
impact	of	the	revised	accounting	policy	on	our	financial	statements	was	not	material	to	any	individual	year.	We	recognized	

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the	cumulative	impact	of	the	revised	accounting	policy	as	a	noncash	net	reduction	to	depletion,	depreciation	and	
amortization	during	the	year	ended	December	31,	2010,	resulting	in	a	pretax	credit	of	$9.6	million	($6.0	million	after	tax),	
which	reflected	a	reduction	to	“CO2	properties”	of	$26.1	million	offset	by	a	decrease	in	“Accumulated	depletion,	
depreciation	and	amortization”	of	$35.7	million.	The	cumulative	adjustment	did	not	have	an	impact	on	our	net	cash	flows.

The	portion	of	our	capitalized	CO2	costs	related	to	CO2	reserves	and	CO2	pipelines	that	we	estimate	will	be	consumed	in	

the	process	of	producing	our	proved	oil	reserves	is	included	in	the	ceiling	test	as	a	reduction	to	future	net	revenues.	The	
remaining	net	capitalized	CO2	properties,	equipment	and	pipelines	balance	is	evaluated	for	impairment	by	comparing	the	
net	carrying	costs	to	the	expected	future	net	revenues	from	(1)	the	production	of	our	probable	and	possible	tertiary	oil	
reserves	and	(2)	the	sale	of	CO2	to	third-party	industrial	users.

Pipelines and Plants

CO2	used	in	our	tertiary	floods	is	transported	to	our	fields	through	CO2	pipelines.	Costs	of	CO2	pipelines	under	

construction	are	not	depreciated	until	the	pipelines	are	placed	into	service.	Pipelines	are	depreciated	on	a	straight-line	
basis	over	their	estimated	useful	lives,	which	range	from	15	to	50	years.

Pipelines	and	plants	include	the	Riley	Ridge	gas	plant	in	southwestern	Wyoming,	which	is	currently	under	construction.	

The	plant	is	being	withheld	from	depreciation	until	it	is	placed	in	service,	which	we	currently	expect	to	occur	during	
mid-2013.

Property and Equipment – Other

Other	property	and	equipment,	which	includes	furniture	and	fixtures,	vehicles,	computer	equipment	and	software,	and	
capitalized	leases,	is	depreciated	principally	on	a	straight-line	basis	over	estimated	useful	lives.	Vehicles	and	furniture	and	
fixtures	are	generally	depreciated	over	a	useful	life	of	five	to	ten	years,	and	computer	equipment	and	software	are	
generally	depreciated	over	a	useful	life	of	three	to	five	years.	Leasehold	improvements	are	amortized	over	the	shorter	of	
the	estimated	useful	life	or	the	remaining	lease	term.

Leased	property	meeting	certain	capital	lease	criteria	is	capitalized,	and	the	present	value	of	the	related	lease	payments	

is	recorded	as	a	liability.	Amortization	of	capitalized	leased	assets	is	computed	using	the	straight-line	method	over	the	
shorter	of	the	estimated	useful	life	or	the	initial	lease	term.

Maintenance	and	repair	costs	that	do	not	extend	the	useful	lives	of	property	and	equipment	are	charged	to	expense	

as	incurred.

Asset Retirement Obligations

In	general,	our	future	asset	retirement	obligations	relate	to	future	costs	associated	with	plugging	and	abandoning	our	

oil,	natural	gas	and	CO2	wells,	removing	equipment	and	facilities	from	leased	acreage,	and	returning	land	to	its	original	
condition.	The	fair	value	of	a	liability	for	an	asset	retirement	obligation	is	recorded	in	the	period	in	which	it	is	incurred,	
discounted	to	its	present	value	using	our	credit-adjusted-risk-free	interest	rate,	and	a	corresponding	amount	capitalized	by	
increasing	the	carrying	amount	of	the	related	long-lived	asset.	The	liability	is	accreted	each	period,	and	the	capitalized	
cost	is	depreciated	over	the	useful	life	of	the	related	asset.	Revisions	to	estimated	retirement	obligations	will	result	in	an	
adjustment	to	the	related	capitalized	asset	and	corresponding	liability.	If	the	liability	is	settled	for	an	amount	other	than	
the	recorded	amount,	the	difference	is	recorded	to	the	full	cost	pool,	unless	significant.

Asset	retirement	obligations	are	estimated	at	the	present	value	of	expected	future	net	cash	flows	and	are	discounted	
using	our	credit-adjusted-risk-free	rate.	We	utilize	unobservable	inputs	in	the	estimation	of	asset	retirement	obligations	
that	include,	but	are	not	limited	to,	costs	of	labor,	costs	of	materials,	profits	on	costs	of	labor	and	materials,	the	effect	of	
inflation	on	estimated	costs,	and	the	discount	rate.	Accordingly,	asset	retirement	obligations	are	considered	a	Level	3	
measurement	under	the	FASC	Fair Value Measurements and Disclosures	topic.

Derivative Instruments and Hedging Activities

We	utilize	oil	and	natural	gas	derivative	contracts	to	mitigate	our	exposure	to	commodity	price	risk	associated	with	our	
future	oil	and	natural	gas	production.	These	derivative	contracts	have	historically	consisted	of	options,	in	the	form	of	price	
floors	or	collars,	and	fixed	price	swaps.	From	time	to	time,	we	have	also	used	interest	rate	lock	contracts	to	mitigate	our	
exposure	to	interest	rate	fluctuations	related	to	sale-leaseback	financing	of	certain	equipment	used	at	our	oilfield	
facilities.	Our	derivative	financial	instruments	are	recorded	on	the	balance	sheet	as	either	an	asset	or	a	liability	measured	

 
 
 
 
 
at	fair	value.	We	do	not	apply	hedge	accounting	to	our	oil	and	natural	gas	derivative	contracts;	accordingly,	the	changes	in	
the	fair	value	of	these	instruments	are	recognized	in	our	Consolidated	Statements	of	Operations	in	the	period	of	change.

Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk

Our	financial	instruments	that	are	exposed	to	concentrations	of	credit	risk	consist	primarily	of	cash	equivalents,	trade	

and	accrued	production	receivables,	and	the	derivative	instruments	discussed	above.	Our	cash	equivalents	represent	
high-quality	securities	placed	with	various	investment-grade	institutions.	This	investment	practice	limits	our	exposure	to	
concentrations	of	credit	risk.	Our	trade	and	accrued	production	receivables	are	dispersed	among	various	customers	and	
purchasers;	therefore,	concentrations	of	credit	risk	are	limited.	We	evaluate	the	credit	ratings	of	our	purchasers,	and		
if	customers	are	considered	a	credit	risk,	letters	of	credit	are	the	primary	security	obtained	to	support	lines	of	credit.	We	
attempt	to	minimize	our	credit	risk	exposure	to	the	counterparties	of	our	oil	and	natural	gas	derivative	contracts	
through	formal	credit	policies,	monitoring	procedures	and	diversification.	All	of	our	derivative	contracts	are	with	banks,	
which	are	part	of	the	syndicate	of	banks	in	our	bank	credit	facility,	or	with	their	affiliates.	There	are	no	margin	
requirements	with	the	counterparties	of	our	derivative	contracts.

Goodwill

Goodwill	represents	the	excess	of	the	purchase	price	over	the	estimated	fair	value	of	the	net	assets	acquired	in	the	
acquisition	of	a	business.	Goodwill	is	not	amortized;	rather,	it	is	tested	for	impairment	annually	during	the	fourth	quarter	
and	when	events	or	changes	in	circumstances	indicate	that	it	is	more	likely	than	not	the	fair	value	of	a	reporting	unit		
with	goodwill	has	been	reduced	below	its	carrying	value.	The	impairment	test	requires	allocating	goodwill	and	other	assets	
and	liabilities	to	reporting	units.	However,	we	have	only	one	reporting	unit.	To	assess	impairment,	we	have	the	option	to	
qualitatively	assess	if	it	is	more	likely	than	not	that	the	fair	value	of	the	reporting	unit	is	less	than	the	carrying	value.	
Absent	a	qualitative	assessment,	or,	through	the	qualitative	assessment,	if	we	determine	it	is	more	likely	than	not	that	the	
fair	value	of	the	reporting	unit	is	less	than	the	carrying	value,	a	quantitative	assessment	is	prepared	to	calculate	the		
fair	market	value	of	the	reporting	unit.	If	it	is	determined	that	the	fair	value	of	the	reporting	unit	is	less	than	the	carrying	
value,	the	recorded	goodwill	is	impaired	to	its	implied	fair	value	with	a	charge	to	operating	expense.	We	completed		
our	annual	goodwill	impairment	assessment	during	the	fourth	quarter	of	2012	and	did	not	record	any	goodwill	impairment	
during	2012,	nor	have	we	recorded	a	goodwill	impairment	historically.

The	following	table	summarizes	the	changes	in	goodwill	for	the	years	ended	December	31,	2012	and	2011:

In thousands 

Beginning	of	year	balance	
	 Goodwill	related	to	the	Riley	Ridge	acquisition		
	 Goodwill	related	to	the	Thompson	Field	acquisition	
End	of	year	balance	

Revenue Recognition

Year Ended December 31,

2012 

2011

$	1,236,318	
—	
47,272	
$	1,283,590	

$	1,232,418
3,900
—
$	1,236,318

Revenue	is	recognized	at	the	time	oil	and	natural	gas	is	produced	and	sold.	Any	amounts	due	from	purchasers	of	oil	and	

natural	gas	are	included	in	accrued	production	receivable.

We	follow	the	sales	method	of	accounting	for	our	oil	and	natural	gas	revenue,	whereby	we	recognize	revenue	on	all	oil	or	

natural	gas	sold	to	our	purchasers	regardless	of	whether	the	sales	are	proportionate	to	our	ownership	in	the	property.		
A	receivable	or	liability	is	recognized	only	to	the	extent	that	we	have	an	imbalance	on	a	specific	property	greater	than	the	
expected	remaining	proved	reserves.	As	of	December	31,	2012	and	2011,	our	aggregate	oil	and	natural	gas	imbalances	
were	not	material	to	our	consolidated	financial	statements.

We	recognize	revenue	and	expenses	of	purchased	producing	properties	at	the	time	we	assume	effective	control,	

commencing	from	either	the	closing	or	purchase	agreement	date,	depending	on	the	underlying	terms	and	agreements.	
We	follow	the	same	methodology	in	reverse	when	we	sell	properties	by	recognizing	revenue	and	expenses	of	the	sold	
properties	until	the	closing	date.

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Income Taxes

Income	taxes	are	accounted	for	using	the	asset	and	liability	method,	under	which	deferred	income	taxes	are	recognized	

for	the	future	tax	effects	of	temporary	differences	between	the	financial	statement	carrying	amounts	and	the	tax		
basis	of	existing	assets	and	liabilities	using	the	enacted	statutory	tax	rates	in	effect	at	year	end.	The	effect	on	deferred	
taxes	for	a	change	in	tax	rates	is	recognized	in	income	in	the	period	that	includes	the	enactment	date.	A	valuation	
allowance	for	deferred	tax	assets	is	recorded	when	it	is	more	likely	than	not	that	the	benefit	from	the	deferred	tax	asset	
will	not	be	realized.

We	recognize	the	tax	benefit	from	an	uncertain	tax	position	only	if	it	is	more	likely	than	not	that	the	tax	position	will	be	

sustained	upon	examination	by	the	taxing	authorities,	based	on	the	technical	merits	of	the	position.	The	tax	benefits	
recognized	in	the	financial	statements	from	such	a	position	are	measured	based	on	the	largest	benefit	that	has	a	greater	
than	50%	likelihood	of	being	realized	upon	ultimate	settlement.

Net Income Per Common Share

Basic	net	income	per	common	share	is	computed	by	dividing	the	net	income	attributable	to	common	stockholders	by	the	
weighted	average	number	of	shares	of	common	stock	outstanding	during	the	period.	Diluted	net	income	per	common	share	
is	calculated	in	the	same	manner,	but	includes	the	impact	of	potentially	dilutive	securities.	Potentially	dilutive	securities	
consist	of	stock	options,	stock	appreciation	rights	(“SARs”),	nonvested	restricted	stock	and	nonvested	performance	equity	
awards.	For	each	of	the	three	years	in	the	period	ended	December	31,	2012,	there	were	no	adjustments	to	net	income	for	
purposes	of	calculating	basic	and	diluted	net	income	per	common	share.

The	following	is	a	reconciliation	of	the	weighted	average	shares	used	in	the	basic	and	diluted	net	income	per	common	

share	calculations	for	the	periods	indicated:

In thousands 

Basic	weighted	average	common	shares	
Potentially	dilutive	securities:
	 Stock	options	and	SARs	
	 Performance	equity	awards	
	 Restricted	stock	
Diluted	weighted	average	common	shares	

  Year Ended December 31,

2012 

2011 

2010

385,205	

396,023	

370,876

2,584	
86	
1,063	
388,938	

3,539	
38	
1,358	
400,958	

3,844
319
1,216
376,255

Basic	weighted	average	common	shares	excludes	3.7	million,	3.4	million	and	3.2	million	shares	of	nonvested	restricted	

stock	during	the	year	ended	December	31,	2012,	2011	and	2010,	respectively.	As	these	restricted	shares	vest	or	become	
retirement	eligible,	they	will	be	included	in	the	shares	outstanding	used	to	calculate	basic	net	income	per	common	share	
(although	all	restricted	stock	is	issued	and	outstanding	upon	grant).	For	purposes	of	calculating	diluted	weighted	
average	common	shares,	the	nonvested	restricted	stock	is	included	in	the	computation	using	the	treasury	stock	method,	
with	the	deemed	proceeds	equal	to	the	average	unrecognized	compensation	during	the	period,	adjusted	for	any	
estimated	future	tax	consequences	recognized	directly	in	equity.

The	following	securities	could	potentially	dilute	earnings	per	share	in	the	future	but	were	not	included	in	the	

computation	of	diluted	net	income	per	share,	as	their	effect	would	have	been	antidilutive:

In thousands 

Stock	options	and	SARs	
Restricted	stock	

Recent Accounting Pronouncements

Year Ended December 31,

2012 

4,068	
47	

2011 

5,017	
104	

2010

3,671
17

Presentation  of  Comprehensive  Income.  In	June	2011,	the	Financial	Accounting	Standards	Board	(“FASB”)	issued	

Accounting	Standards	Update	(“ASU”)	2011-05,	Presentation of Comprehensive Income	(“ASU	2011-05”).	ASU	2011-05	requires	
the	presentation	of	comprehensive	income	in	either	(1)	a	continuous	statement	of	comprehensive	income	or	(2)	two	
separate	but	consecutive	statements.	ASU	2011-05	was	effective	for	Denbury	beginning	January	1,	2012.	Since	ASU	2011-05	
only	amended	presentation	requirements,	it	did	not	have	a	material	effect	on	our	consolidated	financial	statements.

 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Accumulated  Other  Comprehensive  Income  Reclassifications.	In	February	2013,	the	FASB	issued	ASU	2013-02,	

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income	(“ASU	2013-02”).	ASU	2013-02	requires	
disclosure	of	amounts	reclassified	out	of	accumulated	other	comprehensive	income	by	component.	In	addition,	an	entity	is	
required	to	present,	either	on	the	face	of	the	statement	where	net	income	is	presented	or	in	the	notes,	significant	amounts	
reclassified	out	of	accumulated	other	comprehensive	income	by	the	respective	line	items	of	net	income	but	only	if	the	
amount	reclassified	is	required	to	be	reclassified	to	net	income	in	its	entirety	in	the	same	reporting	period.	For	amounts	
not	reclassified	in	their	entirety	to	net	income,	an	entity	is	required	to	cross-reference	to	other	disclosures	that	provide	
additional	detail	about	those	amounts.	ASU	2013-02	is	effective	prospectively	for	our	fiscal	year	beginning	January	1,	2013.	
The	adoption	of	ASU	2013-02	will	not	have	a	material	effect	on	our	consolidated	financial	statements.

Fair  Value.	In	May	2011,	the	FASB	issued	ASU	2011-04,	Amendments to Achieve Common Fair Value Measurement and 
Disclosure Requirements in U.S. GAAP and IFRSs	(“ASU	2011-04”).	ASU	2011-04	amends	the	FASC	Fair Value Measurements	
topic	by	providing	a	consistent	definition	and	measurement	of	fair	value,	as	well	as	similar	disclosure	requirements	
between	U.S.	GAAP	and	International	Financial	Reporting	Standards.	ASU	2011-04	changes	certain	fair	value	measurement	
principles,	clarifies	the	application	of	existing	fair	value	measurements	and	expands	the	fair	value	disclosure	requirements,	
particularly	for	Level	3	fair	value	measurements.	ASU	2011-04	was	effective	for	Denbury	beginning	January	1,	2012.	The	
adoption	of	ASU	2011-04	did	not	have	a	material	effect	on	our	consolidated	financial	statements,	but	did	require	additional	
disclosures.	See	Note	10, Fair Value Measurements.

Balance  Sheet  Offsetting.  In	December	2011,	the	FASB	issued	ASU	2011-11,	Disclosure about Offsetting Assets and 

Liabilities	(“ASU	2011-11”).	ASU	2011-11	requires	an	entity	to	disclose	information	about	offsetting	and	related	arrangements	
to	enable	users	of	its	financial	statements	to	understand	the	effect	of	those	arrangements	on	its	financial	position.	In	
January	2013,	the	FASB	issued	ASU	2013-01,	Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities	(“ASU	
2013-01”).	The	update	clarifies	that	the	scope	of	ASU	2011-11	applies	to	derivatives	accounted	for	in	accordance	with	the	
Derivatives and Hedging topic	of	the	FASC,	including	bifurcated	embedded	derivatives,	repurchase	agreements	and	reverse	
repurchase	agreements,	and	securities	borrowing	and	securities	lending	transactions	that	are	either	offset	or	subject	to		
an	enforceable	master	netting	arrangement	or	similar	agreement.	ASU	2011-11	and	ASU	2013-01	are	effective	for	our	fiscal	
year	beginning	January	1,	2013	and	will	be	applied	retrospectively	for	all	comparative	periods	presented.	The	adoption		
of	ASU	2011-11	and	ASU	2013-01	will	not	have	a	material	effect	on	our	consolidated	financial	statements,	but	may	require	
additional	disclosures.

Note 2. Acquisitions and Divestitures

Acquisitions and Exchange Transaction

Fair  Value.	The	FASC Fair Value Measurements and Disclosures	topic	defines	fair	value	as	the	price	that	would	be	

received	to	sell	an	asset	or	paid	to	transfer	a	liability	in	an	orderly	transaction	between	market	participants	at	the	
measurement	date	(often	referred	to	as	the	“exit	price”).	The	fair	value	measurement	is	based	on	the	assumptions	of	
market	participants	and	not	those	of	the	reporting	entity.	Therefore,	entity-specific	intentions	do	not	impact	the	
measurement	of	fair	value	unless	those	assumptions	are	consistent	with	market	participant	views.

The	fair	value	of	oil	and	natural	gas	properties	is	based	on	significant	inputs	not	observable	in	the	market,	which	the	
FASC	Fair Value Measurements and Disclosures	topic	defines	as	Level	3	inputs.	Key	assumptions	may	include:	(1)	NYMEX	oil	
and	natural	gas	futures	(this	input	is	observable);	(2)	dollar-per-acre	values	of	recent	sale	transactions	(this	input	is	
observable);	(3)	projections	of	the	estimated	quantities	of	oil	and	natural	gas	reserves,	including	those	classified	as	proved,	
probable	and	possible;	(4)	estimated	oil	and	natural	gas	pricing	differentials;	(5)	projections	of	future	rates	of	production;		
(6)	timing	and	amount	of	future	development	and	operating	costs;	(7)	projected	costs	of	CO2	(to	a	market	participant);		
(8)	projected	reserve	recovery	factors;	and	(9)	risk-adjusted	discount	rates.

Bakken  Exchange  Transaction.	In	late	2012,	we	closed	a	sale	and	exchange	transaction	with	Exxon	Mobil	

Corporation	and	its	wholly-owned	subsidiary	XTO	Energy	Inc.	(collectively,	“ExxonMobil”)	under	which	we	sold	to	
ExxonMobil	our	Bakken	area	assets	in	North	Dakota	and	Montana	in	exchange	for	$1.3	billion	in	cash	(after	preliminary	
closing	adjustments)	and	the	following	assets:

•	 operating	interests	in	the	Webster	Field,	a	planned	future	tertiary	field,	located	in	southeastern	Texas,	made	up	of	a	

nearly	100%	working	interest	and	nearly	80%	revenue	interest;

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•	 operating	interests	in	the	Hartzog	Draw	Field,	a	planned	future	tertiary	field,	located	in	Wyoming,	consisting	of	an	

83%	working	interest	and	71%	net	revenue	interest	in	the	oil-producing	Shannon	Sandstone	zone	and	a	67%	working	
interest	and	53%	net	revenue	interest	in	the	natural	gas	producing	Big	George	Coal	zone;	and

•	 approximately	a	one-third	overriding	royalty	ownership	interest	in	ExxonMobil’s	CO2	reserves	in	LaBarge	Field		

in	Wyoming.

The	exchange	of	properties	closed	in	two	phases	on	November	30,	2012	and	December	21,	2012,	and	is	collectively	

referred	to	as	the	“Bakken	Exchange	Transaction”.

Our	acquisition	of	property	interests	constitutes	a	business	combination	under	the	FASC Business Combinations topic.	
Accordingly,	the	purchase	price	of	the	acquisition	is	measured	as	the	fair	value	of	consideration	transferred,	which	consists	
of	our	Bakken	area	assets.	The	fair	value	of	Bakken	area	net	assets	transferred	to	ExxonMobil	in	the	Bakken	Exchange	
Transaction	was	measured	using	a	discounted	future	net	cash	flow	model	for	developed	properties	and	a	market	dollar-
per-acre	value	for	undeveloped	properties.	The	fair	value	of	assets	transferred	in	the	Bakken	Exchange	Transaction	was	
measured	at	the	dates	control	was	transferred	to	ExxonMobil,	which	were	November	30,	2012	and	December	21,	2012	for	
82.5%	and	17.5%,	respectively,	of	our	interest	in	our	Bakken	area	assets.	The	fair	value	of	oil	and	gas	properties	received	
from	ExxonMobil	in	such	transaction	was	measured	using	a	discounted	future	net	cash	flow	model,	and	the	fair	value	of	
CO2	interests	received	was	measured	using	a	market-based	approach,	at	the	date	control	was	transferred	to	Denbury,	
which	was	November	30,	2012,	for	the	acquisition	of	interests	in	Webster	and	Hartzog	Draw	fields	and	December	21,	2012,	
for	the	acquisition	of	interests	in	LaBarge	Field.	We	did	not	record	a	gain	or	loss	on	the	exchange	in	accordance	with	the	
full	cost	method	of	accounting.

The	following	table	presents	a	summary	of	the	preliminary	fair	value	of	assets	acquired	and	liabilities	assumed	in	the	

Bakken	Exchange	Transaction:

In thousands 

Consideration:
	 Fair	value	of	net	assets	transferred	

Less: Fair value of assets acquired and liabilities assumed: (1)
	 Cash	(2)	
	 Oil	and	natural	gas	properties

	 Proved	
	 Unevaluated	
	 CO2	properties	
	 Other	assets	
	 Other	liabilities	
	 Asset	retirement	obligations	
Fair	value	of	net	assets	acquired	

$	1,903,280

	 1,331,684

201,301
98,635
314,505
477
(29,531)
(13,791)
$	1,903,280

(1)	 Fair	value	of	the	assets	acquired	and	liabilities	assumed	is	preliminary,	pending	final	closing	adjustments	and	further	evaluation	of	reserves	and	asset	

retirement	obligations.

(2)	 Cash	proceeds	include	preliminary	closing	adjustments	of	$41.7	million	primarily	representing	adjustments	for	net	revenues	and	capital	expenditures	of	the	
transferred	oil	and	natural	gas	property	assets	from	the	Bakken	Exchange	Transaction	effective	date	to	the	closing	dates.	Also	see	Note	12,	Supplemental 
Information and	Note	13,	Subsequent Events, for	additional	information	regarding	the	placement	of	$1.05	billion	of	the	proceeds	in	a	qualified	trust	to	
facilitate	an	anticipated	like-kind-exchange	transaction	for	federal	income	tax	purposes.

June  2012  Acquisition  of  Reserves  in  the  Gulf  Coast  region  at  Thompson  Field.	In	June	2012,	we	acquired	a	
nearly	100%	working	interest	and	84.7%	net	revenue	interest	in	Thompson	Field	for	$366.2	million	after	preliminary	closing	
adjustments.	The	field	is	located	approximately	18	miles	west	of	Hastings	Field,	which	is	an	enhanced	oil	recovery	field	that	
we	are	currently	flooding	with	CO2,	and	is	the	current	terminus	of	the	Green	Pipeline	which	transports	CO2	from	the	Jackson	
Dome,	located	near	Jackson,	Mississippi.	Thompson	Field	is	similar	to	Hastings	Field,	producing	oil	from	the	Frio	zone	at	
similar	depths,	and	is	also	a	planned	future	tertiary	field.	Under	the	terms	of	the	Thompson	Field	acquisition	agreement,	
the	seller	will	retain	approximately	a	5%	gross	revenue	interest	(less	severance	taxes)	once	average	monthly	oil	production	
exceeds	3,000	Bbls/d	after	the	initiation	of	CO2	injection.

This	acquisition	meets	the	definition	of	a	business	under	the	FASC	Business Combinations topic.	As	such,	we	estimated	

the	fair	value	of	assets	acquired	and	liabilities	assumed	as	of	June	1,	2012,	the	closing	date	of	the	acquisition	using	a	
discounted	future	net	cash	flow	model.	In	applying	these	accounting	principles,	we	estimated	the	fair	value	of	the	assets	

 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
acquired	less	liabilities	assumed	on	the	acquisition	date	to	be	approximately	$318.9	million.	This	measurement	resulted	in	
the	recognition	of	goodwill	of	approximately	$47.3	million,	which	represents	the	excess	of	the	cash	paid	to	acquire	the	field	
over	the	acquisition	date	estimated	fair	value.	This	resultant	goodwill	is	due	primarily	to	two	factors.	The	first	factor	is		
the	decrease	in	average	NYMEX	oil	futures	prices	between	the	date	of	signing	the	purchase	agreement	on	April	24,	2012	and	
closing	the	purchase	on	June	1,	2012.	The	second	factor	is	the	fair	value	assigned	to	the	estimated	oil	reserves	recoverable	
through	a	CO2	EOR	project.	By	building	an	18-mile	extension	of	the	Green	Pipeline,	we	will	have	access	to	CO2	reserves	at	
Jackson	Dome,	one	of	the	few	known	significant	natural	sources	of	CO2	in	the	United	States,	and	the	largest	known	source	
east	of	the	Mississippi	River,	allowing	us	to	carry	out	CO2	EOR	activities	in	this	field	at	a	lower	cost	than	other	market	
participants.	However,	the	FASC	Fair Value Measurements and Disclosures topic	does	not	allow	entity-specific	assumptions	
in	the	measurement	of	fair	value.	Therefore,	we	estimated	the	fair	value	of	the	oil	reserves	recoverable	through	CO2	EOR	
using	a	higher	estimated	cost	of	CO2	to	other	market	participants,	which	lowers	the	discounted	net	revenue	stream	used	in	
making	the	fair	value	estimate	related	to	this	field.	All	of	the	goodwill	associated	with	the	acquisition	is	deductible	for		
tax	purposes	as	property	cost.

The	fair	value	of	the	assets	acquired	and	liabilities	assumed	was	finalized	during	the	fourth	quarter	of	2012,	after	

consideration	of	final	closing	adjustments	and	evaluation	of	reserves	and	asset	retirement	obligations.	The	following	table	
presents	a	summary	of	the	fair	value	of	assets	acquired	and	liabilities	assumed	in	the	Thompson	Field	acquisition:

In thousands 

Consideration:
	 Cash	payment	(1)	

Less: Fair value of assets acquired and liabilities assumed:
	 Oil	and	natural	gas	properties

	 Proved	
	 Unevaluated	

	 Pipelines	and	plants	
	 Other	assets	
	 Asset	retirement	obligations	

Goodwill	

$	366,179

	 305,233
	 12,023
2,000
2,957
(3,306)
	 318,907
$	 47,272

(1)	 See	Note	6,	Income Taxes, for	additional	information	regarding	the	like-kind-exchange	transaction	utilized	to	fund	this	purchase	and	Note	12,	Supplemental 

Information, for	supplemental	cash	flow	information	regarding	the	cash	payment.

October  2010  and  August  2011  Riley  Ridge  Acquisitions.  In	October	2010,	we	acquired	a	42.5%	non-operated	
working	interest	in	Riley	Ridge,	located	in	southwestern	Wyoming,	for	$132.3	million	after	closing	adjustments.	Riley	Ridge	
contains	natural	gas	resources,	as	well	as	helium	and	CO2	resources.	The	purchase	included	a	42.5%	interest	in	a	gas	plant,	
currently	under	construction,	which	will	separate	the	helium	and	natural	gas	from	the	commingled	gas	stream,	and	
interests	in	certain	surrounding	properties.	On	August	1,	2011,	we	acquired	the	remaining	57.5%	working	interest	in	Riley	
Ridge	that	we	did	not	already	own,	the	remaining	57.5%	interest	in	the	gas	plant,	and	interests	in	certain	surrounding	
properties	for	$214.8	million	after	closing	adjustments.	As	a	result	of	the	transaction,	we	became	the	operator	of	both	
projects.	The	purchase	price	includes	a	$15	million	deferred	payment	to	be	made,	subject	to	the	terms	of	the	purchase	
agreement,	at	the	time	the	property’s	gas	plant	is	operational	and	meets	specific	performance	conditions.	This	deferred	
payment	is	measured	at	fair	value	on	a	quarterly	basis	using	management’s	expectation	of	future	cash	flows.	Because		
the	Riley	Ridge	plant	remains	under	construction,	current	production	at	the	field	is	negligible.	As	a	result,	pro	forma	
information	has	not	been	disclosed	due	to	the	immateriality	of	revenues	and	expenses	during	2011	and	2010.

Each	of	the	acquisitions	of	Riley	Ridge	meets	the	definition	of	a	business	under	the	FASC Business Combinations	topic.		
As	such,	we	estimated	the	fair	value	of	assets	acquired	and	liabilities	assumed	using	a	discounted	net	cash	flow	model.	
Goodwill	associated	with	the	acquisitions	is	deductible	for	income	tax	purposes.	The	fair	values	assigned	to	assets	
acquired	and	liabilities	assumed	in	the	August	2011	acquisition	have	been	finalized,	and	no	adjustments	have	been	made	

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to	fair	value	amounts	previously	disclosed	in	our	Form	10-K	for	the	period	ended	December	31,	2011.	The	following	table	
presents	a	summary	of	the	fair	value	of	assets	acquired	and	liabilities	assumed	in	the	August	2011	Riley	Ridge	acquisition:

In thousands 

Consideration:
	 Cash	payment	
	 Deferred	payment	

	 Total	consideration	

Less: Fair value of assets acquired and liabilities assumed:
	 Oil	and	natural	gas	properties

	 Proved	
	 Unproved	
	 CO2	properties	
	 Pipelines	and	plants	
	 Other	assets	(1)	
	 Asset	retirement	obligations	

Goodwill	

$	199,779
	 15,000
	 214,779

	 48,731
	 12,542
9,741
	 91,594
	 48,660
(389)
	 210,879
$	 3,900

(1)	 Other	assets	includes	helium	extraction	rights	of	$36.7	million.	Helium	reserves	at	Riley	Ridge	are	owned	by	the	U.S.	government.	The	fair	value	assigned	to	
helium	extraction	rights	was	calculated	using	the	income	approach	and	represents	the	discounted	future	net	revenues	associated	with	our	right	to	extract	
and	sell	the	helium	on	behalf	of	the	helium	resource	owners.	Upon	commencement	of	helium	production,	helium	extraction	rights	will	be	amortized	on	a	
unit-of-production	basis.

2010  Merger  with  Encore  Acquisition  Company.  On	March	9,	2010,	we	acquired	Encore	pursuant	to	the	Encore	
Merger	Agreement	entered	into	with	Encore	on	October	31,	2009.	The	Encore	Merger	Agreement	provided	for	a	stock	and	
cash	transaction	valued	at	approximately	$4.8	billion	at	the	acquisition	date,	including	the	assumption	of	debt	and		
the	value	of	the	noncontrolling	interest	in	ENP.	Under	the	Encore	Merger	Agreement,	Encore	was	merged	with	and	into	
Denbury,	with	Denbury	surviving	the	Encore	Merger.

In	the	Encore	Merger,	we	issued	approximately	135.2	million	shares	of	common	stock	and	paid	approximately		

$833.9	million	in	cash	to	Encore	stockholders.	The	Denbury	shares	issued	to	Encore	stockholders	represented	approximately	
34%	of	Denbury’s	common	stock	issued	and	outstanding	immediately	after	the	Encore	Merger.	The	total	fair	value	of	our	
common	stock	issued	to	Encore	stockholders	in	the	Encore	Merger	was	approximately	$2.1	billion	based	upon	our	closing	
price	of	$15.43	per	share	on	March	9,	2010.	The	Encore	Merger	was	financed	through	a	combination	of	issuing	$1.0	billion		
of	8¼%	Senior	Subordinated	Notes	due	2020,	which	we	issued	in	February	2010,	borrowings	under	a	new	$1.6	billion	
revolving	credit	agreement	entered	into	in	March	2010,	and	the	assumption	of	Encore’s	remaining	outstanding	senior	
subordinated	notes.

The	Encore	Merger	met	the	definition	of	a	business	combination	under	the	FASC Business Combinations topic.	As	such,	
we	estimated	the	fair	value	of	Encore	as	of	March	9,	2010,	the	acquisition	date,	which	was	the	date	on	which	we	obtained	
control	of	Encore.

For	the	period	from	March	9,	2010	to	December	31,	2010,	we	recognized	$623.4	million	of	oil,	natural	gas	and	related	

product	sales	related	to	properties	acquired	in	the	Encore	Merger.	For	the	period	from	March	9,	2010	to	December	31,	2010,	
we	recognized	$426.0	million	net	field	operating	income	(oil,	natural	gas	and	related	product	sales	less	lease	operating	
expenses	and	production	taxes	and	marketing	expenses)	related	to	properties	acquired	in	the	Encore	Merger.	Transaction	
and	other	costs	related	to	the	Encore	Merger	included	in	the	Consolidated	Statement	of	Operations	for	the	year	ended	
December	31,	2010	include	$48.5	million	of	third-party,	legal	and	accounting	fees,	which	have	been	expensed	as	incurred,	
and	$43.8	million	of	employee-related	severance	and	termination	costs,	which	were	accrued	over	the	employees’	service	
period.	Accrued	employee-related	severance	costs	totaled	$19.8	million	at	December	31,	2010,	of	which	$16.5	million	was	
classified	as	accounts	payable	and	accrued	liabilities	and	$3.3	million	was	classified	as	long-term	other	liabilities	on	our	
balance	sheet.	Transaction	and	other	costs	related	to	the	Encore	Merger	included	in	the	Consolidated	Statement	of	
Operations	for	the	year	ended	December	31,	2011,	include	$0.8	million	of	third-party,	legal	and	accounting	fees,	which	have	
been	expensed	as	incurred,	and	$3.6	million	of	employee-related	severance	and	termination	costs.

 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Unaudited  Pro  Forma  Acquisition  Information.	The	following	combined	pro	forma	total	revenues	and	other	income	

and	net	income	are	presented	as	if	the	Bakken	Exchange	Transaction	and	Thompson	Field	acquisition	had	occurred	on	
January	1,	2011:

In thousands, except per share data 

Pro	forma	total	revenues	and	other	income	
Pro	forma	net	income	
Pro	forma	net	income	per	common	share
	 Basic	
	 Diluted	 	

Year Ended December 31,

2012 

2011

$	2,203,703	
454,549	

$	2,184,507
523,227

$	

1.18	
1.17	

$	

1.32
1.30

The	following	combined	pro	forma	total	revenues	and	other	income	and	net	income	attributable	to	Denbury	

stockholders	are	presented	as	if	the	acquisition	of	Encore	occurred	on	January	1,	2010:

In thousands, except per share data 

Pro	forma	total	revenues	and	other	income	
Pro	forma	net	income	attributable	to	Denbury	stockholders	
Pro	forma	net	income	per	common	share
	 Basic	
	 Diluted	 	

Divestitures

Year Ended
December 31,
2010

$	2,098,241
286,891

$	

0.73
0.72

2012  Divestitures.	In	April	2012,	we	completed	the	sale	of	certain	non-operated	assets	in	the	Paradox	Basin	of	Utah	for	

$75.0	million.	The	sale	had	an	effective	date	of	January	1,	2012,	and	proceeds	received	after	consideration	of	final	closing	
adjustments	totaled	$68.5	million.	Closing	adjustments	included	operating	net	revenues	after	January	1,	2012,	net	of	capital	
and	lease	operating	expenditures,	along	with	other	purchase	price	adjustments.	We	did	not	record	a	gain	or	loss	on	the	
sale	in	accordance	with	the	full	cost	method	of	accounting.

In	February	2012,	we	completed	the	sale	of	certain	non-core	assets	primarily	located	in	central	and	southern	Mississippi	

and	in	southern	Louisiana	for	$155.0	million	to	a	privately	held	entity	in	which	a	member	of	our	Board	of	Directors	served		
as	chairman	of	the	board,	in	a	sale	for	which	there	was	a	competing	bid	contained	in	a	multi-property	purchase	proposal.	
We	realized	net	proceeds	of	$141.8	million,	after	final	closing	adjustments.	The	sale	had	an	effective	date	of	December	1,	
2011,	and	consequently,	operating	revenues	of	$13.5	million	after	the	effective	date,	net	of	capital	and	lease	operating	
expenditures,	along	with	any	other	purchase	price	adjustments,	were	adjustments	to	the	selling	price.	We	did	not	record	a	
gain	or	loss	on	the	sale	in	accordance	with	the	full	cost	method	of	accounting.

Certain	of	our	2012	divestitures	were	structured	as	like-kind-exchange	transactions	for	federal	income	tax	purposes.	

See	Note	6,	Income Taxes	for	further	details.

2010  Divestitures.  In	December	2010,	we	sold	our	ownership	interests	in	ENP,	which	consisted	of	our	100%	ownership	in	

ENP	GP	LLC,	ENP’s	general	partner,	and	20.9	million	ENP	common	units,	to	a	subsidiary	of	Vanguard	for	consideration	
consisting	of	$300.0	million	cash	and	3,137,255	Vanguard	common	units	valued	at	$93.0	million	at	the	time	of	closing.	In	
addition,	Vanguard	assumed	all	of	ENP’s	long-term	bank	debt	of	$234.0	million.	We	did	not	record	a	gain	or	loss	on	the		
sale	of	oil	and	gas	properties	in	accordance	with	the	full	cost	method	of	accounting,	nor	did	we	record	a	gain	or	loss	on	the	
remainder	of	the	net	assets	sold	as	the	book	value	approximated	fair	value.

Pursuant	to	our	plan	of	divesting	non-strategic	legacy	Encore	properties,	certain	oil	and	gas	properties	in	the	Permian	
Basin,	Mid-continent	area	and	East	Texas	Basin	were	sold	in	May	2010	for	consideration	of	$892.1	million	after	final	closing	
adjustments.	We	subsequently	divested	our	production	and	acreage	in	the	Cleveland	Sand	Play	of	western	Oklahoma	for	
consideration	of	$32.1	million	after	closing	adjustments	and	the	Haynesville	and	East	Texas	natural	gas	properties	for	
consideration	of	$213.8	million	after	closing	adjustments.	Together	with	the	sale	of	our	ownership	interest	in	ENP	and	
ENP	GP	LLC	discussed	above,	we	received	$1.5	billion	in	total	consideration	from	these	divestitures	in	2010.	For	all	Encore	
legacy	property	dispositions	during	2010,	we	reduced	our	full	cost	pool	by	the	amount	of	the	net	proceeds	and	did	not	
record	a	gain	or	loss	on	the	sale	in	accordance	with	the	full	cost	method	of	accounting.

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In	February	2010,	we	sold	our	interest	in	Genesis	Energy,	LLC,	the	general	partner	of	Genesis	Energy,	L.P.	(“Genesis”),		

for	net	proceeds	of	approximately	$84	million,	after	giving	effect	to	the	change	of	control	provision	of	the	incentive	
compensation	agreement	with	Genesis’	management,	which	was	triggered	and	under	which	we	paid	a	total	of	$14.9	million.	
In	March	2010,	we	sold	all	of	our	Genesis	common	units	in	a	secondary	public	offering	for	net	proceeds	of	approximately	
$79	million.	We	accounted	for	our	investment	in	Genesis	under	the	equity	method,	and	we	recognized	a	pre-tax	gain	of	
approximately	$101.5	million	($63.0	million	after	tax)	on	these	dispositions.

Note 3. Asset Retirement Obligations

The	following	table	summarizes	the	changes	in	our	asset	retirement	obligations	for	the	years	ended	December	31,	2012	

and	2011:

In thousands 

Beginning	asset	retirement	obligation	
	 Liabilities	incurred	and	assumed	during	period		
	 Revisions	in	estimated	retirement	obligations	
	 Liabilities	settled	and	sold	during	period	
	 Accretion	expense	
Ending	asset	retirement	obligation	
	 Less:	current	asset	retirement	obligation	(1)	
Long-term	asset	retirement	obligation	

Year Ended December 31,

2012 

2011

$	 93,468	
	 50,956	
5,334	
(50,556)	
7,228	
	 106,430	
(3,700)	
$	102,730	

$	85,744
	 12,477
	 12,217
	 (23,257)
6,287
	 93,468
(4,742)
$	88,726

(1)	 Included	in	“Accounts	payable	and	accrued	liabilities”	in	our	Consolidated	Balance	Sheets.

Liabilities	incurred	and	assumed	generally	relate	to	the	drilling	of	incremental	wells	and	liabilities	assumed	upon	the	
acquisition	of	Thompson,	Webster	and	Hartzog	Draw	fields	during	2012.	Liabilities	settled	include	the	plugging	of	old	wells	
in	the	Tinsley	Field	during	2012	and	2011.	Sales	of	properties	in	2012	primarily	represent	the	sale	of	non-core	assets	located	
in	the	Paradox	Basin	of	Utah,	Gulf	Coast	region	and	Bakken	area	assets	in	North	Dakota	and	Montana.

We	have	escrow	accounts	that	are	legally	restricted	for	certain	of	our	asset	retirement	obligations.	The	balances	of	these	

escrow	accounts	were	$35.2	million	and	$34.1	million	at	December	31,	2012	and	2011,	respectively.	These	balances	are	
recorded	at	amortized	cost	and	are	included	in	“Other	assets”	in	our	Consolidated	Balance	Sheets.	The	estimated	fair	
market	value	of	these	investments	approximate	cost	at	December	31,	2012	and	2011.

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Note 4. Property and Equipment

The	following	table	presents	a	summary	of	our	net	property	and	equipment	balances	as	of	December	31,	2012	and	2011:

In thousands 

Oil	and	natural	gas	properties
	 Proved	properties	
	 Unevaluated	properties	

	 Total	 	

	 Accumulated	depletion	and	depreciation	
	 Net	oil	and	natural	gas	properties	

CO2	properties
	 CO2	properties	
	 Accumulated	depletion	and	depreciation	

	 Net	CO2	properties	

Pipelines	and	plants
	 CO2	pipelines	(1)	
	 Plants	under	construction	(2)	

	 Total	 	

	 Accumulated	depletion	and	depreciation	

	 Net	plants	and	pipelines	
Other	property	and	equipment
	 Other	property	and	equipment	
	 Accumulated	depletion	and	depreciation	
	 Net	other	property	and	equipment	
	 Net	property	and	equipment	

December 31,

2012 

2011

	 $	6,963,211	
809,154	
	 7,772,365	
	 (2,827,256)	
	 4,945,109	

	 1,032,653	
(119,784)	
912,869	

	 1,632,255	
402,871	
	 2,035,126	
(99,185)	
	 1,935,941	

417,207	
(134,016)	
283,191	
	 $	8,077,110	

$	 7,026,579
	 1,157,106
	 8,183,685
	 (2,407,520)
	 5,776,165

596,003
(91,666)
504,337

	 1,432,646
269,110
	 1,701,756
(65,392)
	 1,636,364

157,674
(62,915)
94,759
$	 8,011,625

(1)	 Amounts	include	$346.5	million	of	CO2	pipelines	at	December	31,	2012	that	were	not	subject	to	depreciation	during	2012.

(2)	 Plants	under	construction	are	not	subject	to	depreciation.

A	summary	of	the	unevaluated	properties	excluded	from	oil	and	natural	gas	properties	being	amortized	at	December	31,	

2012,	and	the	year	in	which	they	were	incurred	follows:

In thousands 

Property	acquisition	costs	
Exploration	and	development	
Capitalized	interest	
	 Total		

December 31, 2012

  Costs Incurred During:

2012 

$	110,658	
	 106,075	
	 29,249	
$	245,982	

2011 

$	12,543	
	 40,152	
	 30,430	
$	83,125	

2010 

2009 and Prior 

Total

$	351,712	
3,155	
333	
$	355,200	

$	115,075	
8,390	
1,382	
$	124,847	

$	589,988
	 157,772
	 61,394
$	809,154

Our	2012	property	acquisition	costs	were	primarily	related	to	the	fair	value	allocated	to	our	Hartzog	Draw	and	
Thompson	fields.	Our	2010	property	acquisition	costs	were	primarily	related	to	the	fair	value	allocated	to	CO2	tertiary	
potential	at	our	Bell	Creek	and	Cedar	Creek	Anticline	properties,	acquired	as	part	of	the	Encore	Merger.	Property	
acquisition	costs	for	2009	and	prior	were	primarily	related	to	CO2	tertiary	potential	at	Conroe	Field.	Exploration	and	
development	costs	shown	as	unevaluated	properties	are	primarily	associated	with	our	tertiary	oil	fields	that	are	under	
development	but	did	not	have	proved	reserves	at	December	31,	2012.	The	most	significant	development	costs	incurred	
during	2012	and	2011	relate	to	development	in	preparation	for	upcoming	CO2	floods	at	Bell	Creek	and	Grieve	fields.	We	have	
not	yet	recognized	proved	reserves	in	these	fields.

During	2012,	we	established	proved	reserves	at	Hastings	and	Oyster	Bayou	fields	and,	as	a	result,	transferred		

$431.1	million	of	costs	incurred	on	these	projects	into	the	amortization	base.	Costs	are	transferred	into	the	amortization	
base	on	an	ongoing	basis	as	projects	are	evaluated	and	proved	reserves	established	or	impairment	determined.	We		
review	the	excluded	properties	for	impairment	at	least	annually.	We	currently	estimate	that	evaluation	of	most	of	these	
properties	and	the	inclusion	of	their	costs	in	the	amortization	base	is	expected	to	be	completed	within	five	years.	Until		
we	are	able	to	determine	whether	there	are	any	proved	reserves	attributable	to	the	above	costs,	we	are	not	able	to	assess	
the	future	impact	on	the	amortization	rate	of	the	full	cost	pool.

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Note 5. Long-Term Debt

The	following	long-term	debt	and	capital	lease	obligations	were	outstanding	as	of	December	31,	2012	and	2011:

In thousands 

December 31,

2012 

2011

Bank	Credit	Agreement	
9½%	Senior	Subordinated	Notes	due	2016,	including	premium	of	$9,118	and	$11,854,	respectively	
9¾%	Senior	Subordinated	Notes	due	2016,	including	discount	of	$13,569	and	$17,854,	respectively	
8¼%	Senior	Subordinated	Notes	due	2020	
63/8%	Senior	Subordinated	Notes	due	2021	
Other	Subordinated	Notes,	including	premium	of	$25	and	$33,	respectively	
Pipeline	financings	
Capital	lease	obligations	
	 Total		
Less:	current	obligations	
	 Long-term	debt	and	capital	lease	obligations	

$	 700,000	
234,038	
412,781	
996,273	
400,000	
3,832	
236,244	
158,260	
	 3,141,428	
(36,966)	
$	3,104,462	

$	 385,000
236,774
408,496
996,273
400,000
3,840
243,274
4,388
	 2,678,045
(8,316)
$	2,669,729

The	parent	company,	Denbury	Resources	Inc.	(“DRI”),	is	the	sole	issuer	of	all	of	our	outstanding	senior	subordinated	

notes.	DRI	has	no	independent	assets	or	operations.	Each	of	the	subsidiary	guarantors	of	such	notes	is	100%	owned,	
directly	or	indirectly,	by	DRI;	any	subsidiaries	of	DRI	other	than	the	subsidiary	guarantors	are	minor	subsidiaries,	and	the	
guarantees	of	the	notes	are	full	and	unconditional	and	joint	and	several.

February 2013 Issuance of 45/8% Senior Subordinated Notes due 2023

On	February	5,	2013,	we	issued	$1.2	billion	of	45/8%	Senior	Subordinated	Notes	due	2023	(the	“2023	Notes”).	The	2023	
Notes,	which	carry	a	coupon	rate	of	4.625%,	were	sold	at	par.	We	intend	to	use	the	net	proceeds	of	$1.18	billion	from	the	
issuance	of	the	2023	Notes	to	repurchase	or	redeem	our	9½%	Senior	Subordinated	Notes	due	2016	(the	“9½%	Notes”)		
and	our	9¾%	Senior	Subordinated	Notes	due	2016	(the	“9¾%	Notes”)	and	to	pay	down	a	portion	of	outstanding	borrowings	
on	our	Bank	Credit	Agreement.	See	Note	13,	Subsequent Events, for	more	information.

$1.6 Billion Revolving Credit Agreement

In	March	2010,	we	entered	into	a	$1.6	billion	revolving	credit	agreement	with	JPMorgan	Chase	Bank,	N.A.	(“JPMorgan”),	as	

administrative	agent,	and	other	lenders	party	thereto	(as	amended,	the	“Bank	Credit	Agreement”).	Availability	under	the	
Bank	Credit	Agreement	is	subject	to	a	borrowing	base,	which	is	redetermined	semi-annually	on	or	prior	to	May	1	and	
November	1	and	upon	requested	special	redeterminations.	The	borrowing	base	is	adjusted	at	the	banks’	discretion	and	is	
based	in	part	upon	external	factors	over	which	we	have	no	control.	If	the	borrowing	base	were	to	be	less	than	outstanding	
borrowings	under	the	Bank	Credit	Agreement,	we	would	be	required	to	repay	the	deficit	over	a	period	not	to	exceed	four	
months.	As	part	of	the	semi-annual	review	completed	in	September	2012	pursuant	to	the	terms	of	the	Bank	Credit	
Agreement,	our	borrowing	base	was	reaffirmed	at	$1.6	billion.	Loans	under	the	Bank	Credit	Agreement	mature	in	May	2016.

The	Bank	Credit	Agreement	is	secured	by	substantially	all	of	the	proved	oil	and	natural	gas	properties	of	our	restricted	

subsidiaries	and	by	the	equity	interests	of	our	restricted	subsidiaries.	In	addition,	our	obligations	under	the	Bank	Credit	
Agreement	are	guaranteed	jointly	and	severally	by	all	of	our	subsidiaries,	other	than	minor	subsidiaries.

The	Bank	Credit	Agreement	contains	several	restrictive	covenants	including,	among	others:

•	 a	limitation	on	the	ability	to	repurchase	Denbury	common	stock	and	to	pay	dividends	on	Denbury	common	stock,	in	
an	aggregate	amount	not	to	exceed	$1.2	billion	during	the	term	of	the	Bank	Credit	Agreement,	subject	to	certain	
restrictions;

•	 a	requirement	to	maintain	a	current	ratio,	as	determined	under	the	Bank	Credit	Agreement,	of	not	less	than	1.0	to	1.0;

•	 a	maximum	permitted	ratio	of	debt	to	adjusted	EBITDA	(as	defined	in	the	Bank	Credit	Agreement)	of	us	and	our	

restricted	subsidiaries	of	not	more	than	4.25	to	1.0;	and

•	 a	prohibition	against	incurring	debt,	subject	to	permitted	exceptions.

 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
The	Bank	Credit	Agreement	also	includes	a	limitation	on	the	aggregate	amount	of	forecasted	oil	and	natural	gas	

production	that	can	be	economically	hedged	with	oil	or	natural	gas	derivative	contracts.	During	2012,	we	received	a	
limited	waiver	of	any	oil	hedging	noncompliance	that	may	occur	as	a	result	of	the	Bakken	Exchange	Transaction	during		
the	period	commencing	on	the	closing	date	continuing	through	and	including	December	31,	2013	(see	Note	2,	Acquisitions 
and Divestitures).

Under	the	Bank	Credit	Agreement,	we	are	permitted	to	incur	capital	lease	obligations	in	an	aggregate	amount	

outstanding	at	any	time	not	to	exceed	$300	million,	and	are	also	permitted	to	incur	up	to	$40	million	of	other	unsecured	
debt	(which	include	capital	leases).	The	Bank	Credit	Agreement	was	amended	during	2012	concurrent	with	our	change		
in	classification	of	equipment	leases	from	operating	to	capital	(see	Capital Leases	below),	and	we	received	a	waiver	of	any	
applicable	violations	of	the	provisions	of	the	Bank	Credit	Agreement	resulting	from	such	correction	and	the	recording	of	
our	equipment	leases	as	debt.

Loans	under	the	Bank	Credit	Agreement	are	subject	to	varying	rates	of	interest	based	on	(1)	the	total	outstanding	

borrowings	in	relation	to	the	borrowing	base	and	(2)	whether	the	loan	is	a	Eurodollar	loan	or	a	base	rate	loan.	Eurodollar	
loans	bear	interest	at	the	Adjusted	Eurodollar	Rate	(as	defined	in	the	Bank	Credit	Agreement)	plus	the	applicable	margin	in	
a	range	from	1.5%	to	2.5%	based	on	the	ratio	of	outstanding	borrowings	to	the	borrowing	base,	and	base	rate	loans	bear	
interest	at	the	Base	Rate	(as	defined	in	the	Bank	Credit	Agreement)	plus	the	applicable	margin	in	a	range	from	0.5%	to	1.5%	
based	on	the	ratio	of	outstanding	borrowings	to	the	borrowing	base.	The	“Eurodollar	rate”	for	any	interest	period	(either	
one,	two,	three,	six,	nine	or	twelve	months,	as	selected	by	us)	is	the	rate	per	year	equal	to	LIBOR,	as	published	by	Reuters	or	
another	source	designated	by	JPMorgan,	for	deposits	in	dollars	for	a	similar	interest	period.	The	“base	rate”	is	calculated	
as	the	highest	of	(1)	the	annual	rate	of	interest	announced	by	JPMorgan	as	its	“prime	rate,”	(2)	the	federal	funds	effective	
rate	plus	0.5%,	and	(3)	the	Adjusted	Eurodollar	Rate	(as	defined	in	the	Bank	Credit	Agreement)	for	a	one-month	interest	
period	plus	1.0%.	We	incur	a	commitment	fee	of	either	0.375%	or	0.5%,	based	on	the	ratio	of	outstanding	borrowings	to	the	
borrowing	base,	on	the	unused	availability	under	the	Bank	Credit	Agreement.

2011 Redemption of our 2013 and 2015 Notes

Pursuant	to	cash	tender	offers,	during	March	2011,	we	repurchased	$169.6	million	in	principal	of	our	7½%	Senior	
Subordinated	Notes	due	2013	(the	“2013	Notes”)	at	100.625%	of	par,	and	$220.9	million	in	principal	of	our	7½%	Senior	
Subordinated	Notes	due	2015	(the	“2015	Notes”)	at	104.125%	of	par.	We	called	the	remaining	2013	and	2015	Notes,	
repurchasing	all	of	the	remaining	outstanding	2015	Notes	($79.1	million)	at	103.75%	of	par	on	March	21,	2011,	and	all	of	the	
remaining	outstanding	2013	Notes	($55.4	million)	at	par	on	April	1,	2011.	We	recognized	a	$16.1	million	loss	during	the		
year	ended	December	31,	2011	associated	with	the	debt	repurchases,	which	is	included	in	our	Consolidated	Statements	of	
Operations	under	the	caption	“Loss	on	early	extinguishment	of	debt”.

9½% Senior Subordinated Notes due 2016

As	a	result	of	the	Encore	Merger,	we	became	successor	in	interest	to	Encore	under	the	Encore	indenture	with	respect	to	
the	9½%	Notes	in	the	original	principal	amount	of	$225	million.	Interest	on	the	9½%	Notes	is	due	semi-annually,	on	May	1	
and	November	1,	at	a	rate	of	9½%.	The	9½%	Notes	mature	on	May	1,	2016.	We	may	redeem	the	9½%	Notes,	in	whole	or	in	
part	at	our	option	beginning	May	1,	2013,	at	the	following	redemption	prices:	104.75%	after	May	1,	2013;	102.375%	after	May	1,	
2014;	and	100%	after	May	1,	2015.	At	any	time	prior	to	May	1,	2013,	we	may	redeem	100%	of	the	principal	amount	of	the	
9½%	Notes	at	a	price	equal	to	100%	of	the	principal	amount	plus	a	“make-whole”	premium	and	accrued	and	unpaid	
interest.	The	indenture	governing	the	9½%	Notes	includes	various	covenants	and	restrictions,	including	providing	a	put	
right	by	holders	upon	a	change	of	control.	All	of	our	subsidiaries,	other	than	minor	subsidiaries,	guarantee	this	debt	jointly	
and	severally.	Pursuant	to	a	cash	tender	offer	commenced	during	January	2013,	during	February	2013	we	repurchased	
$186.7	million	principal	amount	of	our	9½%	Notes	at	106.87%	of	par,	and	the	indenture	governing	the	9½%	Notes	was	
amended	to	eliminate	most	of	its	restrictive	covenants	and	certain	events	of	default.	We	intend	to	use	a	portion	of	the	net	
proceeds	from	the	recent	issuance	of	our	2023	Notes	to	fund	the	redemption	of	the	remaining	outstanding	principal	
amount	of	our	9½%	Notes.	See	Note	13,	Subsequent Events,	for	more	information.

9¾% Senior Subordinated Notes due 2016

In	February	2009,	we	issued	$420.0	million	of	9¾%	Notes,	which	carry	a	coupon	rate	of	9.75%.	The	9¾%	Notes	were	sold	at	

a	discount	(92.816%	of	par),	which	equates	to	an	effective	yield	to	maturity	of	approximately	11.25%.	In	June	2009,	we	
issued	an	additional	$6.4	million	of	9¾%	Notes.

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The	9¾%	Notes	mature	on	March	1,	2016,	and	interest	on	the	9¾%	Notes	is	payable	March	1	and	September	1	of	each	

year.	The	indenture	governing	the	9¾%	Notes	contains	certain	restrictions	on	our	ability	to	incur	additional	debt,	pay	
dividends	on	our	common	stock,	make	investments,	create	liens	on	our	assets,	engage	in	transactions	with	our	affiliates,	
transfer	or	sell	assets,	consolidate	or	merge,	or	sell	substantially	all	of	our	assets.	The	9¾%	Notes	are	not	subject	to	any	
sinking	fund	requirements.	All	of	our	subsidiaries,	other	than	minor	subsidiaries,	guarantee	this	debt	jointly	and	severally.	
Pursuant	to	a	cash	tender	offer	commenced	during	January	2013,	during	February	2013	we	repurchased	$191.7	million	
principal	amount	of	our	9¾%	Notes	at	105.425%	of	par.	On	February	5,	2013,	we	called	the	remaining	9¾%	Notes	for	
redemption	on	March	7,	2013,	at	104.875%	of	par.	See	Note	13,	Subsequent Events, for	more	information.

8¼% Senior Subordinated Notes due 2020

In	February	2010,	we	issued	$1.0	billion	of	8¼%	Senior	Subordinated	Notes	due	2020	(the	“2020	Notes”),	for	net	proceeds	

after	underwriting	discounts	and	commissions	of	$980	million.	The	2020	Notes,	which	carry	a	coupon	rate	of	8.25%,	were	
sold	at	par.	We	subsequently	redeemed	$3.7	million	principal	amount	of	the	2020	Notes,	as	required	under	the	indenture	
governing	the	2020	Notes.

The	2020	Notes	mature	on	February	15,	2020,	and	interest	is	payable	on	February	15	and	August	15	of	each	year.	We	may	

redeem	the	2020	Notes	in	whole	or	in	part	at	our	option	beginning	February	15,	2015,	at	the	following	redemption	prices:	
104.125%	after	February	15,	2015;	102.75%	after	February	15,	2016;	101.375%	after	February	15,	2017;	and	100%	after	
February	15,	2018.	Prior	to	February	15,	2013,	we	may,	at	our	option,	redeem	up	to	an	aggregate	of	35%	of	the	principal	
amount	of	the	2020	Notes	at	a	price	of	108.25%	with	the	proceeds	of	certain	equity	offerings.	At	any	time	prior	to	February	15,	
2015,	we	may	redeem	100%	of	the	principal	amount	of	the	2020	Notes	at	a	price	equal	to	100%	of	the	principal	amount		
plus	a	“make-whole”	premium	and	accrued	and	unpaid	interest.	The	indenture	governing	the	2020	Notes	contains	certain	
restrictions	on	our	ability	to	incur	additional	debt,	pay	dividends	on	our	common	stock,	make	investments,	create	liens		
on	our	assets,	engage	in	transactions	with	our	affiliates,	transfer	or	sell	assets,	consolidate	or	merge,	or	sell	substantially	
all	of	our	assets.	The	2020	Notes	are	not	subject	to	any	sinking	fund	requirements.	All	of	our	subsidiaries,	other	than	minor	
subsidiaries,	guarantee	this	debt	jointly	and	severally.

6 3/8% Senior Subordinated Notes due 2021

In	February	2011,	we	issued	$400	million	of	63/8%	Senior	Subordinated	Notes	due	2021	(“2021	Notes”).	The	2021	Notes,	
which	carry	a	coupon	rate	of	6.375%,	were	sold	at	par.	The	net	proceeds	of	$393	million	were	used	to	repurchase	a	portion	
of	our	2013	Notes	and	2015	Notes	(see	Redemption of our 2013 and 2015 Notes above).	The	2021	Notes	mature	on	August	15,	
2021,	and	interest	is	payable	on	February	15	and	August	15	of	each	year.	We	may	redeem	the	2021	Notes	in	whole	or	in		
part	at	our	option	beginning	August	15,	2016	at	the	following	redemption	prices:	103.188%	on	or	after	August	15,	2016;	
102.125%	on	or	after	August	15,	2017;	101.062%	on	or	after	August	15,	2018;	and	100%	on	or	after	August	15,	2019.	Prior	to	
August	15,	2014,	we	may	at	our	option	redeem	up	to	an	aggregate	of	35%	of	the	principal	amount	of	the	2021	Notes	at	a	
price	of	106.375%	with	the	proceeds	of	certain	equity	offerings.	In	addition,	at	any	time	prior	to	August	15,	2016,	we	may	
redeem	100%	of	the	principal	amount	of	the	2021	Notes	at	a	price	equal	to	100%	of	the	principal	amount	plus	a	“make-
whole”	premium	and	accrued	and	unpaid	interest.	The	indenture	governing	the	2021	Notes	contains	certain	restrictions	on	
our	ability	to	incur	additional	debt,	pay	dividends	on	our	common	stock,	make	investments,	create	liens	on	our	assets,	
engage	in	transactions	with	our	affiliates,	transfer	or	sell	assets,	consolidate	or	merge,	or	sell	substantially	all	of	our	assets.	
The	2021	Notes	are	not	subject	to	any	sinking	fund	requirements.	All	of	our	subsidiaries,	other	than	minor	subsidiaries,	
guarantee	this	debt	jointly	and	severally.

Pipeline Financings

In	May	2008,	we	closed	two	transactions	with	Genesis	involving	two	of	our	pipelines.	The	NEJD	Pipeline	system	included	a	

20-year	financing	lease,	and	the	Free	State	Pipeline	included	a	long-term	transportation	service	agreement.	We	recorded	
both	of	these	transactions	as	financing	leases.

Debt Issuance Costs

In	connection	with	the	issuance	of	our	outstanding	long-term	debt,	we	have	incurred	debt	issuance	costs,	which	are	
being	amortized	to	interest	expense	using	the	effective	interest	method	over	the	term	of	each	related	facility.	Remaining	
unamortized	debt	issuance	costs	were	$56.5	million	and	$69.6	million	at	December	31,	2012	and	2011,	respectively.	These	
balances	are	included	in	“Other	assets”	in	our	Consolidated	Balance	Sheets.

 
 
 
 
 
Indebtedness Repayment Schedule

At	December	31,	2012,	our	indebtedness,	including	our	capital	and	financing	lease	obligations	but	excluding	the	discount	

and	premium	on	our	senior	subordinated	debt,	is	payable	over	the	next	five	years	and	thereafter	as	follows:

In thousands 

2013		
2014		
2015		
2016		
2017		
Thereafter		
	 Total	indebtedness	

Capital Lease Obligations

$	

36,966
38,481
39,113
	 1,388,592
34,965
	 1,607,737
$	3,145,854

During	the	second	quarter	of	2012,	we	corrected	the	accounting	for	our	equipment	leases	from	operating	leases	to	

capital	leases	to	comply	with	the	FASC	Leases	topic,	as	a	result	of	the	consideration	of	nonperformance-related	default	
covenants	included	in	our	equipment	lease	agreements.	We	recorded	a	cumulative	adjustment	to	establish	the	capital	
lease	assets	as	“Other	property	and	equipment”	($155.6	million)	and	the	capital	lease	obligations	as	“Long-term	debt”	
($138.9	million)	and	“Current	maturities	of	long-term	debt”	($25.1	million)	on	the	accompanying	Consolidated	Balance	Sheets	
for	the	year	ended	December	31,	2012.	We	also	recognized	the	cumulative	pre-tax	impact	of	$8.4	million	($5.2	million	after	
tax)	as	“Other	expenses”	on	the	accompanying	Consolidated	Statements	of	Operations	for	the	year	ended	December	31,	
2012.	Because	the	amounts	involved	were	not	material	to	our	financial	statements	in	any	individual	prior	period	and	the	
cumulative	impact	is	not	material	to	the	results	of	operations	for	the	year	ended	December	31,	2012,	we	recorded	the	
cumulative	effect	of	correcting	these	items	during	2012.

Note 6. Income Taxes

Our	income	tax	provision	(benefit)	is	as	follows:

In thousands 

Current	income	tax	expense	(benefit)
	 Federal	 	
	 State	

	 Total	current	income	tax	expense	

Deferred	income	tax	expense
	 Federal	 	
	 State	

	 Total	deferred	income	tax	expense	
Total	income	tax	expense	

Year Ended December 31,

2012 

2011 

2010

$	 57,720	
	 18,034	
	 75,754	

	 239,862	
	 15,881	
	 255,743	
$	331,497	

$	(12,552)	
	 20,801	
8,249	

	 329,715	
	 12,748	
	 342,463	
$	350,712	

$	 15,683
	 17,511
	 33,194

	 143,381
	 16,968
	 160,349
$	193,543

During	2012,	for	federal	income	tax	purposes,	we	structured	the	divestitures	of	our	Bakken	area	assets	and	certain	

non-core	assets	as	like-kind-exchange	transactions	for	interests	acquired	in	Thompson,	Webster,	Hartzog	Draw	and	LaBarge	
fields	and	assets	to	be	acquired	in	the	Pending	CCA	Acquisition	(See	Note	13, Subsequent Events),	thereby	deferring	the	
majority	of	the	taxable	gain	on	those	divestitures.	The	increase	in	current	taxes	during	2012	is	primarily	due	to	the	taxable	
gain	recognized	in	the	Bakken	Exchange	Transaction	that	we	were	unable	to	defer	through	a	like-kind-exchange	transaction.

At	December	31,	2012,	we	had	tax-effected	state	net	operating	loss	carryforwards	(“NOLs”)	totaling	$35.0	million,	an	

estimated	$17.3	million	of	enhanced	oil	recovery	credits	to	carry	forward	related	to	our	tertiary	operations,	and	$34.8	million	
of	alternative	minimum	tax	credits.	Our	state	NOLs	expire	in	various	years,	starting	in	2015,	although	most	do	not	begin	to	
expire	until	2024.	Our	enhanced	oil	recovery	credits	will	begin	to	expire	in	2025.

Deferred	income	taxes	reflect	the	available	tax	carryforwards	and	the	temporary	differences	based	on	tax	laws	and	
statutory	rates	in	effect	at	the	December	31,	2012	and	2011	balance	sheet	dates.	We	believe	that	we	will	be	able	to	realize	
all	of	our	deferred	tax	assets	at	December	31,	2012,	and	therefore,	have	provided	no	valuation	allowance	against	our	
deferred	tax	assets.

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Significant	components	of	our	deferred	tax	assets	and	liabilities	as	of	December	31,	2012	and	2011	are	as	follows:

In thousands 

Deferred tax assets:
	 Loss	carryforwards	–	federal	
	 Loss	carryforwards	–	state	
	 Tax	credit	carryover	
	 Derivative	contracts	
	 Enhanced	oil	recovery	credit	carryforwards	 	
	 Stock	based	compensation	
	 Other	

	 Total	deferred	tax	assets	

Deferred tax liabilities:
	 Property	and	equipment	
	 Other	

	 Total	deferred	tax	liabilities	

Total	net	deferred	tax	liability	

December 31,

2012 

2011

$	

—	
35,007	
34,837	
7,252	
17,346	
28,387	
37,226	
160,055	

$	

13,970
41,960
34,829
3,551
53,381
32,566
35,279
215,536

	 (2,277,388)	
(6,963)	
	 (2,284,351)	
$	(2,124,296)	

	 (2,078,143)
(5,813)
	 (2,083,956)
$	(1,868,420)

Our	reconciliation	of	income	tax	expense	computed	by	applying	the	U.S.	federal	statutory	rate	and	the	reported	effective	

tax	rate	on	income	from	continuing	operations	is	as	follows:

In thousands 

Income	tax	provision	calculated	using	the	federal	statutory	income	tax	rate	
State	income	taxes,	net	of	federal	income	tax	benefit	
Effect	of	statutory	rate	change	
Other	
	 Total	income	tax	expense	

Year Ended December 31,

2012 

2011 

2010

$	299,900	
	 30,955	
(429)	
1,071	
$	331,497	

$	323,416	
	 29,555	
(578)	
(1,681)	
$	350,712	

$	167,674
	 13,087
	 11,502
1,280
$	193,543

In	the	third	quarter	of	2008,	we	obtained	approval	from	the	National	Office	of	the	Internal	Revenue	Service	(“IRS”)	to	
change	our	method	of	tax	accounting	for	certain	assets	used	in	our	tertiary	oilfield	recovery	operations.	As	a	result	of	the	
approved	change	in	method	of	tax	accounting,	beginning	with	the	2007	tax	year	we	began	to	deduct,	rather	than	
capitalize,	such	costs	for	tax	purposes	and	applied	for	tax	refunds	associated	with	such	change	for	our	2004	and	2006	tax	
years.	Notwithstanding	its	consent	to	our	change	in	tax	accounting	in	2008,	the	IRS	exercised	its	prerogative	to	challenge	
the	tax	accounting	method	we	used.	In	late	January	2011,	we	received	a	Technical	Advice	Memorandum	(“TAM”)	issued		
by	the	IRS	National	Office	disapproving	our	method	of	accounting	and	revoking	its	consent	to	our	change,	on	a	prospective	
basis	only,	commencing	January	1,	2011.	Beginning	with	the	2011	tax	year,	we	returned	to	capitalizing	and	depreciating	
the	costs	of	these	assets	for	tax	purposes.	In	December	2011,	we	received	notification	from	the	IRS	that	the	review	
process	was	completed	and	that	all	issues	related	to	the	TAM	were	settled	without	further	adjustments.	As	a	result	of	the	
prospective	nature	of	the	IRS’s	determination,	there	was	no	change	in	our	position	with	respect	to	the	deductibility		
of	these	costs	for	2007,	2008,	2009	and	2010.	Refund	claims	of	$10.6	million	for	tax	years	through	2006	were	received,	plus	
accrued	interest,	in	2012.

We	file	consolidated	and	separate	income	tax	returns	in	the	U.S.	federal	jurisdiction	and	in	many	state	jurisdictions.	

The	IRS	concluded	its	examination	of	our	2006,	2007	and	2008	tax	years	during	the	fourth	quarter	of	2011	with	no	
adjustments.	During	the	third	quarter	of	2012,	the	IRS	concluded	its	audit	of	Encore	Acquisition	Company	for	the	tax	
years	2008,	2009	and	2010	and	Encore	Operating	LP	for	the	tax	years	2008	and	2009,	with	no	significant	adjustments.	
During	the	fourth	quarter	of	2012,	the	state	of	Mississippi	concluded	its	audit	of	Denbury	for	the	tax	years	2004,	2005,	
2006,	and	2007,	with	no	significant	adjustments.	Our	income	tax	returns	for	tax	years	ending	2009	through	2011	currently	
remain	subject	to	examination	by	the	appropriate	taxing	authorities.	We	have	not	paid	any	significant	interest	or	
penalties	associated	with	our	income	taxes.

 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Note 7. Stockholders’ Equity

Stock Repurchase Program

In	October	2011,	we	commenced	a	common	share	repurchase	program	for	up	to	$500	million	of	Denbury	common	shares,	

as	approved	by	the	Company’s	Board	of	Directors.	During	2012,	the	Board	of	Directors	increased	the	dollar	amount	of	
Denbury	common	shares	that	can	be	purchased	under	the	program	to	an	aggregate	of	$771.2	million.	The	program	has	no	
pre-established	ending	date	and	may	be	suspended	or	discontinued	at	any	time.	We	are	not	obligated	to	repurchase	any	
dollar	amount	or	specific	number	of	shares	of	our	common	stock	under	the	program.	During	2012,	we	repurchased		
17.0	million	shares	of	Denbury	common	stock	for	$266.7	million,	or	$15.71	per	share,	and	during	2011,	we	repurchased	
14.1	million	shares	of	Denbury	common	stock	for	$195.2	million,	or	$13.83	per	share	under	this	share	repurchase	program.	
From	the	time	the	share	repurchase	program	commenced	in	October	2011	through	December	31,	2012,	we	have	purchased	
31.1	million	shares	of	Denbury	common	stock	(approximately	7.7%	of	our	outstanding	shares	of	common	stock	at	
September	30,	2011)	at	a	cost	of	$461.9	million,	and	at	that	date,	we	were	authorized	to	spend	an	additional	$309.3	million	
under	this	repurchase	program.	We	account	for	treasury	stock	using	the	cost	method	and	include	treasury	stock	as	a	
component	of	stockholders’	equity.	See	Note	13,	Subsequent Events,	for	additional	information.

Other	share	repurchases	during	2012	and	2011,	and	all	of	our	share	repurchases	during	2010	were	from	our	employees	
who	surrendered	shares	to	the	Company	to	satisfy	their	minimum	tax	withholding	requirements	as	provided	for	under	our	
stock	compensation	plans	and	were	not	part	of	a	formal	stock	repurchase	plan.

Employee Stock Purchase Plan

We	have	an	Employee	Stock	Purchase	Plan	that	is	authorized	to	issue	up	to	9,900,000	shares	of	common	stock.	As	of	
December	31,	2012,	there	were	462,131	authorized	shares	remaining	to	be	issued	under	the	plan.	In	accordance	with	the	
plan,	eligible	employees	may	contribute	up	to	10%	of	their	base	salary,	and	we	match	75%	of	their	contribution.	The	
combined	funds	are	used	to	purchase	previously	unissued	Denbury	common	stock	or	treasury	stock	that	we	purchased	in	
the	open	market	for	that	purpose,	in	either	case,	based	on	the	market	value	of	our	common	stock	at	the	end	of	each	
quarter.	We	recognize	compensation	expense	for	the	75%	Company	match	portion,	which	totaled	$5.7	million,	$4.8	million	
and	$3.5	million	for	the	years	ended	December	31,	2012,	2011	and	2010,	respectively.	This	plan	is	administered	by	the	
Compensation	Committee	of	our	Board	of	Directors.

401(k) Plan

We	offer	a	401(k)	plan	to	which	employees	may	contribute	tax-deferred	earnings	subject	to	IRS	limitations.	We	match	

100%	of	an	employee’s	contribution,	up	to	6%	of	compensation,	as	defined	by	the	plan,	which	is	vested	immediately.		
During	2012,	2011	and	2010,	our	matching	contributions	to	the	401(k)	Plan	were	approximately	$8.0	million,	$7.1	million	and	
$5.7	million,	respectively.

Note 8. Stock Compensation Plans

Stock Incentive Plans

We	have	two	stock	compensation	plans.	The	first	plan	(providing	only	for	the	issuance	of	stock	options)	has	been	in	
existence	since	1995	(the	“1995	Plan”)	and	expired	in	August	2005	(although	options	granted	under	the	1995	Plan	prior	to	
that	time	can	remain	outstanding	for	up	to	10	years).	The	second	plan,	the	2004	Omnibus	Stock	and	Incentive	Plan	(the	
“2004	Plan”),	has	a	10-year	term	and	was	approved	by	the	stockholders	in	May	2004.	The	2004	Plan	provides	for	the	
issuance	of	incentive	and	non-qualified	stock	options,	restricted	stock	awards,	restricted	stock	units,	SARs	settled	in	stock,	
and	performance	awards	that	may	be	issued	to	officers,	employees,	directors	and	consultants.	Awards	covering	a	total		
of	29.5	million	shares	of	common	stock	have	been	authorized	for	issuance	pursuant	to	the	2004	Plan.	At	December	31,	2012,	
11.3	million	shares	were	available	under	the	2004	Plan	for	future	issuance	of	awards,	all	of	which	could	be	issued	in		
the	form	of	restricted	stock	or	performance	vesting	awards.	Our	incentive	compensation	program	is	administered	by	the	
Compensation	Committee	of	our	Board	of	Directors.

Prior	to	January	1,	2006,	we	granted	incentive	and	non-qualified	stock	options	to	our	employees.	Effective	January	1,	
2006,	we	completely	replaced	the	use	of	stock	options	for	employees	with	SARs	settled	in	stock,	as	SARs	are	less	dilutive	to	
our	stockholders	while	providing	an	employee	with	essentially	the	same	economic	benefits	as	stock	options.	The	stock	

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options	and	SARs	generally	become	exercisable	over	a	three-	or	four-year	vesting	period,	with	the	specific	terms	of	vesting	
determined	at	the	time	of	grant	based	on	guidelines	established	by	the	Compensation	Committee	of	the	Board	of	Directors.	
The	stock	options	and	SARs	expire	over	terms	not	to	exceed	10	years	from	the	date	of	grant,	90	days	after	termination	of	
employment,	90	days	or	one	year	after	permanent	disability,	depending	on	the	plan,	or	one	year	after	the	death	of	the	
optionee.	The	stock	options	and	SARs	are	granted	at	the	fair	market	value	at	the	time	of	grant,	which	is	defined	in	the	2004	
Plan	as	the	closing	price	on	the	NYSE	on	the	date	of	grant.

Holders	of	restricted	stock	awards	have	the	rights	and	privileges	of	owning	the	shares	(including	voting	rights)	except	

that	the	holders	are	not	entitled	to	delivery	of	a	portion	thereof	until	certain	requirements	are	met.	Restricted	stock	
awards	vest	over	three-to-four-year	vesting	periods,	with	the	specific	terms	of	vesting	determined	at	the	time	of	grant.

Annually,	the	Board	of	Directors	grants	performance-based	equity	awards	to	officers	of	Denbury.	These	performance-
based	awards	vest	over	1.25	to	3.25	years	and	the	number	of	performance-based	shares	earned	(and	eligible	to	vest)	during	
the	performance	period	will	depend	upon	two	sets	of	factors:	(1)	our	level	of	success	in	achieving	four	specifically	identified	
performance	targets	(“Performance-based	Operational	Awards”)	and	(2)	relative	performance	of	our	stock	to	that	of		
a	designated	peer	group	(“Performance-based	TSR	Awards”).	Generally,	one-half	of	the	maximum	number	of	shares	that	
could	be	earned	under	the	performance-based	awards	will	be	earned	for	performance	at	the	designated	target	levels	
(100%	target	vesting	levels)	or	upon	any	earlier	change	of	control,	and	twice	the	number	of	shares	will	be	earned	if	the	
higher	maximum	target	levels	are	met.	If	performance	is	below	the	designated	minimum	levels	for	all	performance	targets,	
no	performance-based	shares	will	be	earned.	Performance-based	Operational	Awards	are	valued	using	the	fair	market	
value	of	Denbury	stock	on	the	grant	date	and	Performance-based	TSR	Awards	are	valued	using	a	Monte	Carlo	simulation.

Stock-based	compensation	expense	associated	with	our	field	employees	is	included	in	“Lease	operating	expense,”	while	

such	expense	associated	with	non-field	employees	is	included	in	“General	and	administrative	expenses”	in	the	
Consolidated	Statements	of	Operations.	Stock-based	compensation	associated	with	Encore	Merger	transition	employees	is	
included	in	“Transaction	and	other	costs	related	to	the	Encore	Merger”	in	the	Consolidated	Statements	of	Operations.	
Stock-based	compensation	associated	with	our	employees	involved	in	exploration	and	drilling	activities	is	capitalized	as	
part	of	“Oil	and	natural	gas	properties”	in	the	Consolidated	Balance	Sheets.

Stock-based	compensation	costs	for	the	years	ended	December	31,	2012,	2011	and	2010,	are	as	follows:

In thousands 

Stock-based	compensation	expensed:
	 General	and	administrative	expenses	
	 Lease	operating	expenses	
	 Transaction	and	other	costs	related	to	the	Encore	Merger	

	 Total	stock-based	compensation	expensed	

Stock-based	compensation	capitalized	

	 Total	cost	of	stock-based	compensation	arrangements	

Income	tax	benefit	realized	for	stock-based	compensation	arrangements	

Stock Options and SARs

Year Ended December 31,

2012 

2011 

2010

$	26,463	
	 2,847	
—	
	 29,310	
	 8,587	
$	37,897	

$	15,131	

$	30,256	
	 2,621	
313	
	 33,190	
	 6,998	
$	40,188	

$	18,383	

$	28,169
	 2,056
	 5,866
	 36,091
	 3,702
$	39,793

$	 8,462

The	fair	value	of	each	SARs	award	is	estimated	on	the	date	of	grant	using	the	Black-Scholes	option	pricing	model	with	
the	assumptions	noted	in	the	following	table.	The	risk-free	rate	for	periods	within	the	contractual	life	of	the	option	is	based	
on	the	U.S.	Treasury	yield	curve	in	effect	at	the	time	of	grant.	The	expected	life	of	stock	options	and	SARs	granted	was	
derived	from	examination	of	our	historical	option	grants	and	subsequent	exercises.	The	contractual	terms	(cliff	vesting	and	
graded	vesting)	are	evaluated	separately	for	the	expected	life,	as	the	exercise	behavior	for	each	is	different.	Expected	
volatilities	are	based	on	the	historical	volatility	of	our	common	stock.	Implied	volatility	was	not	used	in	this	analysis,	as	
our	tradable	call	option	terms	are	short	and	the	trading	volume	is	low.	Our	dividend	yield	is	zero,	as	we	have	historically	
not	paid	dividends.

Weighted	average	fair	value	of	SARs	granted	
Risk-free interest rate 
Expected life   
Expected volatility 
Dividend	yield	

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$	8.90	

0.79% 

2011 

$	9.68	

1.74% 

2010

$ 8.45

2.19%

  4.0 to 5.0 years 

 4.0 to 5.0 years 

  4.0 to 4.3 years

64.9% 
—	

63.3%	
—	

65.0%
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The	following	is	a	summary	of	our	stock	option	and	SARs	activity:

Outstanding	at	December	31,	2011	
Granted	
Exercised	 	
Forfeited	or	expired	
Outstanding	at	December	31,	2012	

Exercisable	at	end	of	period	

Weighted 
Average 
Remaining 
Contractual 
Life 
(in years) 

Aggregate
Intrinsic
Value
(in thousands)

Weighted 
Average 
Exercise Price 

$	13.56
	 17.14
	 8.03
	 18.34
	 14.75	

$	13.81	

3.7	

3.2	

$	31,861

$	30,031

Number  
of Awards 

	 11,949,610	
1,066,294	
(2,029,570)	
(541,199)	
	 10,445,135	

7,115,744	

The	following	is	a	summary	of	the	total	intrinsic	value	of	stock	options	and	SARs	exercised	and	grant-date	fair	value	of	

stock	options	and	SARs	vested:

In thousands 

Intrinsic	value	of	stock	options	exercised	
Grant-date	fair	value	of	stock	options	and	SARs	vested	

Year Ended December 31,

2012 

$	17,315	
	 26,391	

2011 

$	20,463	
	 11,416	

2010

$	12,670
	 8,689

As	of	December	31,	2012,	there	was	$13.8	million	of	total	compensation	cost	to	be	recognized	in	future	periods	related		
to	nonvested	stock	option	and	SARs	share-based	compensation	arrangements.	The	cost	is	expected	to	be	recognized	over	a	
weighted-average	period	of	2.0	years.	The	following	is	a	summary	of	cash	received	from	stock	option	exercises	under	
share-based	payment	arrangements	and	tax	benefits	realized	from	the	exercises	of	stock	options	and	SARs:

In thousands 

Cash	received	from	stock	option	exercises	
Tax	benefit	realized	for	the	exercises	of	stock	options	and	SARs	

Restricted Stock – 2004 Plan

Year Ended December 31,

2012 

$	6,022	
241	

2011 

$	4,685	
879	

2010

$	4,867
	 4,603

As	of	December	31,	2012,	there	was	$29.0	million	of	unrecognized	compensation	expense	related	to	nonvested	restricted	

stock	grants.	This	unrecognized	compensation	cost	is	expected	to	be	recognized	over	a	weighted-average	period		
of	2.61	years.	The	following	is	a	summary	of	the	total	vesting	date	fair	value	of	restricted	stock	under	the	2004	Plan:

In thousands 

Fair	value	of	restricted	stock	vested		

Year Ended December 31,

2012 

$	22,332	

2011 

2010

$	12,355	

$	12,731

A	summary	of	the	status	of	our	nonvested	restricted	stock	grants	issued	under	our	2004	Plan	and	the	changes	during	

the	year	ended	December	31,	2012	is	presented	below:

Nonvested	at	December	31,	2011	
Granted	
Vested	 	
Forfeited	
Nonvested	at	December	31,	2012	

  Number 
of Shares 

3,131,435	
1,909,739	
(1,378,496)	
(256,471)	
3,406,207	

Weighted
Average
Grant-Date
Fair Value

$	14.82
	 16.94
	 15.38
	 17.08
	 15.60

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In	February	2010,	prior	to	the	consummation	of	the	Encore	Merger,	Encore	issued	a	restricted	stock	grant	to	its	employees	

under	the	Encore	Acquisition	Company	2008	Incentive	Stock	Plan	(“Encore	Plan”).	At	the	time	of	the	Encore	Merger,	the	
shares	were	converted	to	shares	of	Denbury	restricted	stock.	The	shares	vest	ratably	over	a	four-year	graded	vesting	
period;	however,	legacy	Encore	employees	who	terminate	their	employment	for	Good	Reason,	as	defined	by	Encore’s	legacy	
Employee	Severance	Protection	Plan,	will	automatically	vest	in	their	awards	upon	termination.	Encore	employees	who	did	
not	accept	permanent	positions	with	Denbury	but	who	continued	their	employment	through	a	predefined	transition	period	
were	considered	to	have	terminated	for	Good	Reason	and,	accordingly,	vested	in	their	awards	upon	termination.	As	of	
December	31,	2012,	there	was	$0.5	million	of	unrecognized	compensation	expense	related	to	non-vested	restricted	stock	
issued	under	the	Encore	Plan,	which	is	expected	to	be	recognized	over	a	weighted-average	period	of	1.1	years.	The	
following	is	a	summary	of	the	total	vesting	date	fair	value	of	restricted	stock	under	the	Encore	Plan:

In thousands 

Fair	value	of	restricted	stock	vested		

Year Ended December 31,

2012 

$	584	

2011 

$	2,259	

2010

$	6,571

A	summary	of	the	status	of	the	non-vested	restricted	stock	grants	under	the	Encore	Plan	and	the	changes	during	the	

year	ended	December	31,	2012	is	presented	below:

Nonvested	at	December	31,	2011	
Vested	 	
Forfeited	
Nonvested	at	December	31,	2012	

Performance-Based Equity Awards

Weighted
Average
Grant-Date
Fair Value

$	15.43
	 15.43
	 15.43
	 15.43

Shares 

103,043	
(36,049)	
(10,736)	
56,258	

During	2012,	we	granted	Performance-based	Operational	Awards	and	Performance-based	TSR	Awards	to	our	officers.		

The	range	of	assumptions	used	in	the	Monte	Carlo	simulation	valuation	approach	for	Performance-based	TSR	Awards,	
which	were	granted	for	the	first	time	during	2012,	are	as	follows:

Weighted	average	fair	value	of	Performance-based	TSR	Award	granted	
Risk-free	interest	rate	
Expected	life	 	
Expected	volatility	
Dividend	yield	

2012

$	24.68

0.42%

2.81	years

45.2%
—

A	summary	of	the	status	of	the	nonvested	performance-based	equity	awards	(presented	at	the	target	level)	during	the	

year	ended	December	31,	2012	is	as	follows:

Nonvested	at	December	31,	2011	
Granted	
Vested	(1)	
Forfeited	
Nonvested	at	December	31,	2012	

Performance-based  
Operational Awards 

Performance-based 
TSR Awards 

Number  
of Awards 

214,627	
110,615	
(214,627)	
(10,422)	
	 100,193	

Weighted 
Average 
Grant-Date 
Fair Value 

$	18.71	
	 17.27	
	 18.71	
	 17.27	
	 17.27	

Number 
of Awards 

	 —	
	96,325	
	 —	
	(9,408)	
	86,917	

Weighted
Average
Grant-Date
Fair Value

$	 —
	 24.68
	 —
	 24.68
	 24.68

(1)	 During	2012,	the	2011	annual	Performance-based	Operational	Awards	vested,	and	award	holders	received	shares	equivalent	to	56%	of	the	number	of	

target-level	shares.

 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
The	following	is	a	summary	of	the	total	vesting	date	fair	value	of	performance-based	equity	awards:

In thousands 

Vesting	date	fair	value	of	Performance-based	Operational	Awards	

Year Ended December 31,

2012 

$	2,191	

2011 

$	10,892	

2010

$	7,532

Note 9. Derivative Instruments and Hedging Activities

Oil and Natural Gas Derivative Contracts

We	do	not	apply	hedge	accounting	treatment	to	our	oil	and	natural	gas	derivative	contracts;	therefore,	the	changes	in	
the	fair	values	of	these	instruments	are	recognized	in	income	in	the	period	of	change.	These	fair	value	changes,	along	with	
the	cash	settlements	of	expired	contracts,	are	shown	under	“Derivatives	expense	(income)”	in	our	Consolidated	Statements	
of	Operations.

From	time	to	time,	we	enter	into	various	oil	and	natural	gas	derivative	contracts	to	provide	an	economic	hedge	of	our	

exposure	to	commodity	price	risk	associated	with	anticipated	future	oil	and	natural	gas	production.	We	do	not	hold	or	
issue	derivative	financial	instruments	for	trading	purposes.	These	contracts	have	consisted	of	price	floors,	collars	and	fixed	
price	swaps.	The	production	that	we	hedge	has	varied	from	year	to	year	depending	on	our	levels	of	debt	and	financial	
strength	and	expectation	of	future	commodity	prices.	We	currently	employ	a	strategy	to	hedge	a	portion	of	our	forecasted	
production	approximately	two	years	in	the	future	from	the	current	quarter,	as	we	believe	it	is	important	to	protect	our	
future	cash	flow	to	provide	a	level	of	assurance	for	our	capital	spending	in	those	future	periods	in	light	of	current	
worldwide	economic	uncertainties	and	commodity	price	volatility.	We	do	not	have	any	natural	gas	derivative	contracts	for	
2013	or	beyond.	Because	our	current	and	forecasted	production	is	primarily	oil,	we	currently	use	only	oil	derivative	
contracts	in	our	commodity	market	risk	management	program.

The	following	is	a	summary	of	“Derivatives	expense	(income)”	included	in	our	Consolidated	Statements	of	Operations:

In thousands 

Oil
	 Payment	on	settlements	of	derivative	contracts	
	 Fair	value	adjustments	to	derivative	contracts	–	income	

	 Total	derivatives	expense	(income)	–	oil	

Natural gas
	 Receipt	on	settlements	of	derivative	contracts	 	
	 Fair	value	adjustments	to	derivative	contracts	–	expense	(income)	

	 Total	derivatives	expense	(income)	–	natural	gas	
Ineffectiveness	on	interest	rate	swaps	
	 Derivatives	expense	(income)	

  Year Ended December 31,

2012 

2011 

2010

$	 9,991	
	 (10,904)	
(913)	

	 (27,871)	
	 23,950	
(3,921)	
—	
$	 (4,834)	

$	 25,128	
	 (58,980)	
	 (33,852)	

	 (27,505)	
8,860	
	 (18,645)	
—	
$	(52,497)	

$	 93,417
	 (44,441)
	 48,976

	 (61,805)
(8,585)
	 (70,390)
(2,419)
$	(23,833)

Commodity Derivative Contracts Not Classified as Hedging Instruments

Year 

Months 

Type of 
Contract 

Volume 
(Barrels per day) 

Range 

 Weighted Average Price 
Ceiling
Floor 

Contract Prices per Barrel  

Oil contracts:
2013	

2014	

Jan	–	Mar	
Apr 	–	June	
July	–	Sept	
Oct	–	Dec	

Jan	–	Mar	
Apr	–	June	
July	–	Sept	
Oct	–	Dec	

	 Collar	
	 Collar	
	 Collar	
	 Collar	

	 Collar	
	 Collar	
	 Collar	
	 Collar	

	 55,000	
	 56,000	
	 56,000	
	 54,000	

	 52,000	
	 52,000	
	 48,000	
	 48,000	

$	70.00		–	113.00		
	 75.00		–	121.50		
	 75.00		–	133.10		
	 80.00		–	127.50		

$	80.00		–	104.50		
	 80.00		–	104.50		
	 80.00		–		 98.80	
	 80.00		–		 98.80	

$	78.91	
	 79.64	
	 79.64	
	 80.00	

$	80.00	
	 80.00	
	 80.00	
	 80.00	

$	108.01
	 108.61
	 109.15
	 117.53

$	102.44
	 102.44
	 97.46
	 97.46

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Additional Disclosures about Derivative Instruments:

At	December	31,	2012	and	2011,	we	had	derivative	financial	instruments	recorded	in	our	Consolidated	Balance	Sheets		

as	follows:

Type of Contract 

Balance Sheet Location 

Derivatives not designated as hedging instruments:
  Derivative assets

  Crude oil contracts 
  Natural gas contracts 
  Crude oil contracts 

  Derivative liabilities

  Crude oil contracts 
  Deferred premiums	(1) 
  Crude oil contracts 
  Deferred premiums	(1) 

 Derivative assets – current 
Derivative assets – current 
 Derivative assets – long-term 

 Derivative liabilities – current 
 Derivative liabilities – current 
 Derivative liabilities – long-term 
 Derivative liabilities – long-term 

  Total derivatives not designated as hedging instruments   

(1)	 Deferred	premiums	payable	relate	to	various	oil	floor	contracts	and	are	payable	on	a	monthly	basis	through	January	2013.

Note 10. Fair Value Measurements

  Estimated Fair Value

Asset (Liability) 
December 31, 

2012 

2011

In thousands

$ 19,477 
— 
36 

(2,659) 
(183) 
  (23,781) 
— 
$  (7,110) 

$ 23,452
  23,950
29

  (22,610)
(3,913)
  (18,702)
(170)
$  2,036

The	FASC	Fair	Value	Measurements	and	Disclosures	topic	defines	fair	value	as	the	price	that	would	be	received	to	sell	an	

asset	or	would	be	paid	to	transfer	a	liability	in	an	orderly	transaction	between	market	participants	at	the	measurement	
date	(exit	price).	We	utilize	market	data	or	assumptions	that	market	participants	would	use	in	pricing	the	asset	or	liability,	
including	assumptions	about	risk	and	the	risks	inherent	in	the	inputs	to	the	valuation	technique.	These	inputs	can	be	
readily	observable,	market	corroborated	or	generally	unobservable.	We	primarily	apply	the	market	approach	for	recurring	
fair	value	measurements	and	endeavor	to	utilize	the	best	available	information.	Accordingly,	we	utilize	valuation	
techniques	that	maximize	the	use	of	observable	inputs	and	minimize	the	use	of	unobservable	inputs.	We	are	able	to	
classify	fair	value	balances	based	on	the	observability	of	those	inputs.	The	FASC	establishes	a	fair	value	hierarchy		
that	prioritizes	the	inputs	used	to	measure	fair	value.	The	hierarchy	gives	the	highest	priority	to	unadjusted	quoted	prices	
in	active	markets	for	identical	assets	or	liabilities	(Level	1	measurement)	and	the	lowest	priority	to	unobservable	inputs	
(Level	3	measurement).	The	three	levels	of	the	fair	value	hierarchy	are	as	follows:

•	 Level	1	—	Quoted	prices	in	active	markets	for	identical	assets	or	liabilities	as	of	the	reporting	date.

•	 Level	2	—	Pricing	inputs	are	other	than	quoted	prices	in	active	markets	included	in	Level	1,	which	are	either	directly	
or	indirectly	observable	as	of	the	reported	date.	Level	2	includes	those	financial	instruments	that	are	valued	using	
models	or	other	valuation	methodologies.	Instruments	in	this	category	include	non-exchange-traded	oil	and	natural	
gas	derivatives	that	are	based	on	NYMEX	pricing.	Our	costless	collars	are	valued	using	the	Black-Scholes	model,	an	
industry	standard	option	valuation	model,	that	takes	into	account	inputs	such	as	contractual	prices	for	the	
underlying	instruments,	including	maturity,	quoted	forward	prices	for	commodities,	interest	rates,	volatility	factors	
and	credit	worthiness,	as	well	as	other	relevant	economic	measures.	Substantially	all	of	these	assumptions	are	
observable	in	the	marketplace	throughout	the	full	term	of	the	instrument,	can	be	derived	from	observable	data	or	are	
supported	by	observable	levels	at	which	transactions	are	executed	in	the	marketplace.

•	 Level	3	—	Pricing	inputs	include	significant	inputs	that	are	generally	less	observable	from	objective	sources.	These	

inputs	may	be	used	with	internally	developed	methodologies	that	result	in	management’s	best	estimate	of	fair	value.	
At	December	31,	2011,	instruments	in	this	category	also	included	non-exchange-traded	natural	gas	derivatives	swaps	
that	were	based	on	regional	pricing	other	than	NYMEX	(i.e.,	Houston	Ship	Channel).	Our	basis	swaps	were	estimated	
using	discounted	cash	flow	calculations	based	upon	forward	commodity	price	curves.

We	adjust	the	valuations	from	the	valuation	model	for	nonperformance	risk,	using	our	estimate	of	the	counterparty’s	
credit	quality	for	asset	positions	and	our	credit	quality	for	liability	positions.	We	use	multiple	sources	of	third-party	credit	
data	in	determining	counterparty	nonperformance	risk,	including	credit	default	swaps.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The	following	table	sets	forth	by	level	within	the	fair	value	hierarchy	our	financial	assets	and	liabilities	that	were	

accounted	for	at	fair	value	on	a	recurring	basis	as	of	December	31,	2012	and	2011:

In thousands 

December 31, 2012
Assets:
	 Oil	derivative	contracts	
Liabilities:
	 Oil	derivative	contracts	

	 Total	 	

December 31, 2011
Assets:
	 Short-term	investments	
	 Oil	and	natural	gas	derivative	contracts	
Liabilities
	 Oil	and	natural	gas	derivative	contracts	

	 Total	 	

Fair Value Measurements Using:

Quoted Prices 
in Active 
Markets 
(Level 1) 

Significant 

Significant 

Other Observable  Unobservable 

Inputs 
(Level 2) 

Inputs 
(Level 3) 

Total

$	 —	

$	 19,513	

$	 —	

$	 19,513

—	
$	 —	

(26,440)	
(6,927)	

$	

—	
$	 —	

(26,440)
(6,927)

$	

$	86,682	
—	

—	
$	86,682	

$	
—	
	 23,481	

$	 —	
	 23,950	

$	 86,682
	 47,431

(41,312)	
$	(17,831)	

—	
$	23,950	

(41,312)
$	 92,801

The	following	table	summarizes	the	changes	in	the	fair	value	of	our	Level	3	assets	and	liabilities	for	the	years	ended	

December	31,	2012	and	2011:

In thousands 

Fair	value	of	Level	3	instruments,	beginning	of	year	
	 Unrealized	gains	on	commodity	derivative	contracts	included	in	earnings	
	 Receipts	on	settlement	of	commodity	derivative	contracts	
Fair	value	of	Level	3	instruments,	end	of	year	

December 31,

2012 

2011

$	 23,950	
3,921	
	 (27,871)	
$	 —	

$	16,478
	 13,384
(5,912)
$	23,950

The	amount	of	total	gains	for	the	period	included	in	earnings	attributable	to	the	change		

in	unrealized	gains	relating	to	assets	still	held	at	the	reporting	date	

$	 —	

$	13,384

Since	we	do	not	use	hedge	accounting	for	our	commodity	derivative	contracts,	any	gains	and	losses	on	our	assets	and	

liabilities	are	included	in	“Derivatives	expense	(income)”	in	the	accompanying	Consolidated	Statements	of	Operations.	
Management’s	estimate	of	the	fair	market	value	of	contingent	consideration	has	not	changed	from	the	acquisition	date		
to	December	31,	2012;	therefore,	there	has	been	no	impact	on	the	Consolidated	Statements	of	Operations	for	the	years	
ended	December	31,	2012	and	2011.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During	2012,	we	recorded	a	$15.1	million	impairment	charge	for	an	investment	in	the	preferred	stock	of	an	entity	that	

was	created	to	develop	a	gasification	plant	(in	which	we	would	offtake	its	CO2	to	use	in	our	tertiary	oil	operations)		
as	a	result	of	this	project	not	moving	forward.	This	charge	is	classified	as	“Impairment	of	assets”	in	the	Consolidated	
Statement	of	Operations	for	the	year	ended	December	31,	2012.

Other Fair Value Measurements

The	carrying	value	of	our	revolving	bank	credit	facility	approximates	fair	value,	as	it	is	subject	to	short-term	floating	

interest	rates	that	approximate	the	rates	available	to	us	for	those	periods.	We	use	a	market	approach	to	determine	fair	
value	of	our	fixed-rate	debt	using	observable	market	data.	The	fair	values	of	our	senior	subordinated	notes	are	based	on	
quoted	market	prices.	The	estimated	fair	value	of	our	total	long-term	debt	as	of	December	31,	2012	and	2011,	excluding	
pipeline	financing	and	capital	lease	obligations,	is	$2,956.9	million	and	$2,638.2	million,	respectively.	We	have	other	financial	
instruments	consisting	primarily	of	cash,	cash	equivalents,	short-term	receivables	and	payables	that	approximate	fair	
value	due	to	the	nature	of	the	instrument	and	the	relatively	short	maturities.

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Note 11. Commitments and Contingencies

Leases

We	lease	office	space,	equipment	and	vehicles	that	have	non-cancelable	lease	terms.	Leases	entered	into	during	2012	
have	terms	up	to	thirteen	years.	Lease	payments	associated	with	operating	leases	were	$33.6	million,	$52.3	million	and	
$42.4	million	in	2012,	2011	and	2010,	respectively.	We	have	subleased	part	of	the	office	space	included	in	our	operating	
leases	for	which	we	received	approximately	$2.7	million,	$2.4	million	and	$0.5	million	in	2012,	2011	and	2010,	respectively.	In	
addition,	we	expect	to	receive	approximately	$3.6	million	for	2013	through	2016	under	these	sublease	agreements.

The	following	table	summarizes	by	year	the	remaining	non-cancelable	future	payments	under	these	leases	as	of	

December	31,	2012:

In thousands 

2013		
2014		
2015		
2016		
2017		
Thereafter		
	 Total	minimum	lease	payments	
	 Less:	Amount	representing	interest	

	 Present	value	of	minimum	lease	payments	

Commitments

Pipeline 
Financing 
Leases 

$	 30,817	
31,992	
32,591	
31,233	
30,678	
	 296,226	
	 453,537	
	 (217,293)	
$	236,244	

Capital 
Leases 

Operating
Leases

$	 10,656
	 11,452
	 12,300
	 12,384
	 12,720
	 80,562
$	140,074

$	 35,429	
	 31,629	
	 30,139	
	 28,038	
	 22,052	
	 31,806	
	 179,093	
(20,833)
$	158,260

We	have	entered	into	long-term	commitments	to	purchase	CO2	that	are	either	non-cancelable	or	cancelable	only	upon	
the	occurrence	of	specified	future	events.	The	commitments	continue	for	up	to	20	years.	The	price	we	will	pay	for	CO2	varies	
depending	on	the	amount	of	CO2	delivered	and	the	price	of	oil.	We	anticipate	the	contracts	will	provide	us	with	
approximately	335	MMcf/d	to	675	MMcf/d	of	CO2	at	a	cost	of	approximately	$95	million	to	$190	million	per	year,	assuming	a	
$100	per	Bbl	NYMEX	oil	price.

We	are	party	to	long-term	contracts	that	require	us	to	deliver	CO2	to	our	industrial	CO2	customers	at	various	contracted	

prices,	plus	we	have	a	CO2	delivery	obligation	to	Genesis	related	to	three	CO2	volumetric	production	payments	(“VPPs”).	
Based	upon	the	maximum	amounts	deliverable	as	stated	in	the	industrial	contracts	and	the	VPPs,	we	estimate	that	we	
may	be	obligated	to	deliver	up	to	327	Bcf	of	CO2	to	these	customers	over	the	next	14	years.	The	maximum	volume	required	
in	any	given	year	is	approximately	109	MMcf/d.	Given	the	size	of	our	Jackson	Dome	proven	CO2	reserves	at	December	31,	
2012,	our	current	production	capabilities	and	our	projected	levels	of	CO2	usage	for	our	own	tertiary	flooding	program,	we	
believe	that	we	can	meet	these	contractual	delivery	obligations.

In	conjunction	with	the	August	1,	2011	Riley	Ridge	acquisition,	we	assumed	the	20-year	helium	supply	contract	under	

which	the	original	participants	in	Riley	Ridge	agreed	to	supply	helium	to	a	third-party	purchaser.	After	the	
commencement	date,	the	contract	provides	for	the	delivery	of	a	minimum	contracted	quantity	of	helium,	subject	to	
adjustment	after	start-up	of	the	Riley	Ridge	Plant,	which	if	not	supplied	in	accordance	with	the	terms	of	the	contract,	may	
obligate	us	to	compensate	the	third-party	helium	purchaser	for	the	amount	of	the	shortfall	in	an	amount	not	to	exceed	
$8.0	million	per	year.

Litigation

We	are	involved	in	various	lawsuits,	claims	and	regulatory	proceedings	incidental	to	our	businesses.	While	we	currently	
believe	that	the	ultimate	outcome	of	these	proceedings,	individually	and	in	the	aggregate,	will	not	have	a	material	adverse	
effect	on	our	financial	position	or	overall	trends	in	results	of	operations	or	cash	flows,	litigation	is	subject	to	inherent	
uncertainties.	If	an	unfavorable	ruling	were	to	occur,	there	exists	the	possibility	of	a	material	adverse	impact	on	our	net	
income	in	the	period	in	which	the	ruling	occurs.	We	provide	accruals	for	litigation	and	claims	if	we	determine	that	a	loss	is	
probable	and	the	amount	can	be	reasonably	estimated.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Other Contingencies

We	are	subject	to	audits	in	the	various	states	in	which	we	operate	for	sales	and	use	taxes	and	severance	taxes,	and	from	

time	to	time	receive	assessments	for	potential	taxes	that	we	may	owe.	In	the	past,	settlement	of	these	matters	has	not	
had	a	material	adverse	financial	impact	on	us,	and	currently	we	have	no	material	assessments	for	potential	taxes.

We	are	subject	to	various	possible	contingencies	that	arise	primarily	from	interpretation	of	federal	and	state	laws	and	
regulations	affecting	the	oil	and	natural	gas	industry.	Such	contingencies	include	differing	interpretations	as	to	the	prices	
at	which	oil	and	natural	gas	sales	may	be	made,	the	prices	at	which	royalty	owners	may	be	paid	for	production	from	their	
leases,	environmental	issues	and	other	matters.	Although	we	believe	that	we	have	complied	with	the	various	laws	and	
regulations,	administrative	rulings	and	interpretations	thereof,	adjustments	could	be	required	as	new	interpretations	and	
regulations	are	issued.	In	addition,	production	rates,	marketing	and	environmental	matters	are	subject	to	regulation	by	
various	federal	and	state	agencies.

Note 12. Supplemental Information

Significant Oil and Natural Gas Purchasers

Oil	and	natural	gas	sales	are	made	on	a	day-to-day	basis	or	under	short-term	contracts	at	the	current	area	market	price.	

We	do	not	expect	that	the	loss	of	any	purchaser	would	have	a	material	adverse	effect	upon	our	operations.	For	the	years	
ended	December	31,	2012,	2011	and	2010,	two	purchasers	accounted	for	10%	or	more	of	our	oil	and	natural	gas	revenues:	
Marathon	Petroleum	Company	LLC	(39%,	43%	and	46%	in	2012,	2011	and	2010,	respectively)	and	Plains	Marketing	LP	(17%,	
16%	and	14%	in	2012,	2011	and	2010,	respectively).

Allowance for Doubtful Accounts

We	record	an	allowance	for	doubtful	accounts	for	receivables	that	we	determine	to	be	uncollectible	based	on	the	

specific	identification	basis.	The	allowance	for	doubtful	accounts,	which	is	netted	against	“Trade	and	other	receivables”		
on	the	Consolidated	Balance	Sheets,	was	$0.3	million	at	December	31,	2012	and	2011.

Accounts Payable and Accrued Liabilities

In thousands 

Accrued	exploration	and	development	costs	
Accounts	payable	
Accrued	interest	
Accrued	compensation	
Accrued	lease	operating	expenses	
Taxes	payable	
Other	
	 Total		

December 31,

2012 

2011

$	109,939	
	 86,051	
	 60,698	
	 48,451	
	 23,862	
	 27,523	
	 58,144	
$	414,668	

$	141,868
	 99,444
	 60,923
	 35,861
	 24,185
	 13,455
	 53,600
$	429,336

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Supplemental Cash Flow Information

In thousands 

Supplemental	cash	flow	information:
	 Cash	paid	for	interest,	expensed	
	 Cash	paid	for	interest,	capitalized	
	 Cash	paid	for	income	taxes	
	 Cash	received	from	income	tax	refunds	
Non-cash	investing	activities:

Increase	in	asset	retirement	obligations	
Increase	(decrease)	in	liabilities	for	capital	expenditures	

	 Sale	of	non-core	assets	(1)	
	 Purchase	of	Thompson	Field	(1)	
	 Sale	of	Bakken	area	assets	in	Bakken	Exchange	Transaction	(2)	
	 Purchase	of	properties	in	Bakken	Exchange	Transaction	(2)	

Issuance	of	Denbury	common	stock	in	connection	with	the	Encore	Merger	

	 Vanguard	common	units	received	as	consideration	for	sale	of	ENP	

Year Ended December 31,

2012 

2011 

2010

$	 137,950	
77,432	
99,194	
(38,004)	

56,290	
(26,882)	
(212,544)	
212,544	
	 (1,621,611)	
571,596	
—	
—	

$	137,259	
	 60,540	
	 45,912	
(24,677)	

	 24,694	
	 74,697	
—	
—	
—	
—	
—	
—	

$	 151,831
66,815
17,960
(15,107)

53,579
(237)
—
—
—
—
	 2,085,681
93,020

(1)	 During	2012,	$212.5	million	of	proceeds	from	the	sale	of	certain	non-core	assets	were	paid	by	the	purchaser	directly	to	a	qualified	intermediary	to	facilitate	a	
like-kind-exchange	transaction	for	federal	income	tax	purposes.	The	qualified	intermediary	subsequently	released	the	funds	to	the	previous	owner	of	the	
Thompson	Field	to	fund	our	acquisition	of	Thompson	Field.

(2)	 During	2012,	we	sold	our	Bakken	area	assets	with	a	fair	value	as	determined	in	accordance	with	FASC	rules	of	$1.9	billion	to	ExxonMobil	in	exchange	for	a	

combination	of	cash	and	various	property	interests	valued	in	accordance	with	FASC	rules	at	$571.6	million.	ExxonMobil	paid	a	portion	of	the	cash	proceeds	
($1.05	billion)	directly	to	a	qualified	intermediary	to	facilitate	a	like-kind-exchange	transaction	under	federal	income	tax	rules	under	which	we	expect	our	
Pending	CCA	Acquisition	to	qualify	(see	Note	13,	Subsequent Events).	The	remaining	$281.7	million	in	cash	proceeds	are	reported	as	an	investing	activity	on	our	
Statement	of	Cash	Flows	for	the	year	ending	December	31,	2012.

Note 13. Subsequent Events

Pending CCA Acquisition

In	January	2013,	we	entered	into	an	agreement	to	acquire	producing	assets	in	the	Cedar	Creek	Anticline	(“CCA”)	of	
Montana	and	North	Dakota	from	a	wholly-owned	subsidiary	of	ConocoPhillips	for	$1.05	billion	in	cash,	before	standard	
closing	adjustments	primarily	for	revenues	and	costs	of	the	properties	to	be	purchased	from	the	January	1,	2013	effective	
date	to	the	closing	date.	We	plan	to	fund	the	acquisition	out	of	a	portion	of	the	cash	proceeds	from	the	Bakken	Exchange	
Transaction	in	order	to	qualify	the	acquisition	for	like-kind-exchange	treatment	under	federal	income	tax	rules.	We	expect	
the	acquisition	to	close	near	the	end	of	the	first	quarter	of	2013.

New Senior Subordinated Notes

On	February	5,	2013,	we	issued	the	2023	Notes,	which	carry	a	coupon	rate	of	4.625%,	and	were	sold	at	par.	The	net	

proceeds	of	$1.18	billion	have	been	used	to	repurchase	a	portion	of,	or	are	intended	to	be	used	to	redeem	the	remainder	of,	
our	outstanding	9½%	Notes	and	9¾%	Notes	and	to	reduce	borrowings	under	our	credit	facility.

The	2023	Notes	mature	on	July	15,	2023,	and	interest	is	payable	on	January	15	and	July	15	of	each	year,	commencing	July	15,	

2013.	We	may	redeem	the	2023	Notes	in	whole	or	in	part	at	our	option	beginning	January	15,	2018,	at	the	following	
redemption	prices:	102.313%	on	or	after	January	15,	2018;	101.542%	on	or	after	January	15,	2019;	100.771%	on	or	after	
January	15,	2020;	and	100%	on	or	after	January	15,	2021.	Prior	to	July	15,	2016,	we	may	at	our	option	redeem	up	to	an	
aggregate	of	35%	of	the	principal	amount	of	the	2023	Notes	at	a	price	of	104.625%	with	the	proceeds	of	certain	equity	
offerings.	In	addition,	at	any	time	prior	to	July	15,	2018,	we	may	redeem	100%	of	the	principal	amount	of	the	2023	Notes	at	a	
price	equal	to	100%	of	the	principal	amounts	plus	a	“make	whole”	premium	and	accrued	and	unpaid	interest.	The	
indenture	contains	certain	restrictions	on	our	ability	to:	(1)	incur	additional	debt;	(2)	pay	dividends	on	our	common	stock	or	
redeem,	repurchase	or	retire	such	capital	stock	or	subordinated	debt	unless	certain	leverage	ratios	are	met;	(3)	make	
investments;	(4)	create	liens	on	our	assets;	(5)	create	restrictions	on	the	ability	of	our	restricted	subsidiaries	to	pay	
dividends	or	make	other	payments	to	the	Company;	(6)	engage	in	transactions	with	our	affiliates;	(7)	transfer	or	sell	assets;	
and	(8)	consolidate,	merge	or	transfer	all	or	substantially	all	of	our	assets	and	the	assets	of	our	subsidiaries.	All	of	our	
significant	subsidiaries	fully	and	unconditionally	guaranteed	this	debt.

 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Tender Offers

On	January	22,	2013,	we	commenced	cash	tender	offers	to	purchase	$426.4	million	principal	amount	of	our	9¾%	Notes	

and	$224.9	million	principal	amount	of	our	9½%	Notes.	During	February	2013,	we	accepted	for	purchase	$191.7	million	
principal	amount	of	the	outstanding	9¾%	Notes	and	$186.7	million	principal	amount	of	the	outstanding	9½%	Notes.	We	
received	sufficient	consents	in	the	solicitation	to	amend	the	indenture	governing	the	9½%	Notes	by	entering	into	a	
supplemental	indenture,	which	eliminated	most	of	the	restrictive	covenants	and	certain	events	of	default.	The	purchases	
under	these	tender	offers	were	funded	by	the	proceeds	from	the	sale	of	our	2023	Notes.	The	tender	offers	expired		
on	February	19,	2013.	On	February	5,	2013,	we	issued	a	notice	of	redemption	for	all	remaining	outstanding	9¾%	Notes	
at	104.875%	of	par	with	a	redemption	date	of	March	7,	2013	and	intend	to	call	the	9½%	Notes	for	redemption	on	or	
about	May	1,	2013.

Stock Repurchase Program

Between	January	1,	2013	and	February	21,	2013,	the	Company	repurchased	an	additional	3.5	million	shares	of	Denbury	

common	stock	under	the	share	repurchase	program	for	$59.1	million,	or	$16.73	per	share.	From	the	time	the	share	
repurchase	program	commenced	in	October	2011	through	February	21,	2013,	we	have	repurchased	a	total	of	$521.0	million	
of	common	stock	under	the	program,	and	are	authorized	to	spend	an	additional	$250.2	million	under	this	repurchase	
program.	See	Note	7,	Stockholders’ Equity, for	additional	information.

Equity Award Grant

In	January	2013,	we	granted	equity	incentive	awards	to	our	employees	under	the	2004	Plan.	The	grant	included	1,545,077	
shares	of	restricted	stock	valued	at	$16.77	per	share	(the	closing	price	of	Denbury’s	common	stock	on	January	4,	2013)	and	
605,802	SARs	with	an	exercise	price	of	$16.77	and	a	weighted	average	grant	date	fair	value	ranging	between	$5.42	and	$8.72	
per	unit.	The	awards	generally	vest	33%	per	year	over	a	three-year	period.

Note 14. Supplemental Oil and Natural Gas Disclosures (Unaudited)

Costs Incurred

The	following	table	summarizes	costs	incurred	and	capitalized	in	oil	and	natural	gas	property	acquisition,	exploration	

and	development	activities.	Property	acquisition	costs	are	those	costs	incurred	to	purchase,	lease	or	otherwise	acquire	
property,	including	both	undeveloped	leasehold	and	the	purchase	of	reserves	in	place.	Exploration	costs	include	costs	of	
identifying	areas	that	may	warrant	examination	and	examining	specific	areas	that	are	considered	to	have	prospects	
containing	oil	and	natural	gas	reserves,	including	costs	of	drilling	exploratory	wells,	geological	and	geophysical	costs,	and	
carrying	costs	on	undeveloped	properties.	Development	costs	are	incurred	to	obtain	access	to	proved	reserve	costs,	
including	the	cost	of	drilling	development	wells,	and	to	provide	facilities	for	extracting,	treating,	gathering	and	storing	the	
oil	and	natural	gas,	and	the	cost	of	improved	recovery	systems.

We	capitalize	interest	on	unevaluated	oil	and	natural	gas	properties	that	have	ongoing	development	activities.	Included	

in	costs	incurred	in	the	table	below	is	capitalized	interest	of	$36.5	million	in	2012,	$44.9	million	in	2011	and	$32.6	million	in	
2010.	Costs	incurred	also	include	new	asset	retirement	obligations	established,	as	well	as	changes	to	asset	retirement	
obligations	resulting	from	revisions	in	cost	estimates	or	abandonment	dates.	Asset	retirement	obligations	included	in	the	
table	below	were	$38.8	million	in	2012,	$24.2	million	in	2011	and	$45.1	million	in	2010.	See	Note	3,	Asset Retirement 
Obligations,	for	additional	information.

Costs	incurred	in	oil	and	natural	gas	activities	were	as	follows:

In thousands 

Property	acquisitions:
	 Proved	 	
	 Unevaluated	
Exploration	
Development		
	 Total	costs	incurred	(1)	

Year Ended December 31,

2012 

2011 

2010

$	 491,041	
115,270	
12,019	
	 1,111,314	
$	1,729,644	

$	

86,465	
17,858	
31,483	
	 1,144,243	
$	1,280,049	

$	3,373,450
	 1,297,695
8,728
658,758
$	5,338,631

(1)	 Capitalized	general	and	administrative	costs	that	directly	relate	to	exploration	and	development	activities	were	$49.2	million,	$35.0	million	and	$20.1	million	

for	the	years	ended	December	31,	2012,	2011	and	2010,	respectively.

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Oil and Natural Gas Operating Results

Results	of	operations	from	oil	and	natural	gas	producing	activities,	excluding	corporate	overhead	and	interest	costs,	

were	as	follows:

In thousands, except per BOE data 

Oil,	natural	gas,	and	related	product	sales	
Lease	operating	costs	
Marketing	expenses	
Taxes	other	than	income	
Depletion,	depreciation	and	amortization	
CO2	properties	and	pipelines	depletion	and	depreciation	(1)	
Commodity	derivatives	expense	(income)	
	 Net	operating	income	
Income	tax	provision	
	 Results	of	operations	from	oil	and	natural	gas	producing	activities	

Year Ended December 31,

2012 

2011 

2010

$	2,409,867	
532,359	
52,836	
149,919	
448,424	
42,064	
(4,834)	
	 1,189,099	
457,803	
$	 731,296	

$	2,269,151	
507,397	
26,047	
138,419	
369,075	
24,460	
(52,497)	
	 1,256,250	
477,375	
$	 778,875	

$	1,793,292
470,364
31,036
114,569
391,782
29,206
(21,414)
777,749
295,545
$	 482,204

Depletion,	depreciation	and	amortization	per	BOE	

$	

18.69	

$	

16.42	

$	

15.82

(1)	 Represents	an	allocation	of	the	depletion,	depreciation	and	amortization	of	our	CO2	properties	and	pipelines	associated	with	our	tertiary	oil		

producing	activities.

Oil and Natural Gas Reserves

Net	proved	oil	and	natural	gas	reserve	estimates	for	all	years	presented	were	prepared	by	DeGolyer	and	MacNaughton,	

independent	petroleum	engineers	located	in	Dallas,	Texas.	These	oil	and	natural	gas	reserve	estimates	do	not	include		
any	value	for	probable	or	possible	reserves	that	may	exist,	nor	do	they	include	any	value	for	undeveloped	acreage.	The	
reserve	estimates	represent	our	net	revenue	interest	in	our	properties.	See	Standardized Measure of Discounted Future  
Net Cash Flows and Changes Therein Relating to Proved Oil and Natural Gas Reserves below	for	a	discussion	of	the	effect	
of	the	different	prices	on	reserve	quantities	and	values.	Operating	costs,	production	and	ad	valorem	taxes,	and	future	
development	costs	were	based	on	current	costs.

There	are	numerous	uncertainties	inherent	in	estimating	quantities	of	proved	reserves	and	in	projecting	the	future	rates	

of	production	and	timing	of	development	expenditures.	The	following	reserve	data	represents	estimates	only	and	should	
not	be	construed	as	being	exact.	Moreover,	the	present	values	should	not	be	construed	as	the	current	market	value	of		
our	oil	and	natural	gas	reserves	or	the	costs	that	would	be	incurred	to	obtain	equivalent	reserves.	Estimates	of	reserves	as	
of	year-end	2012,	2011	and	2010	were	prepared	using	an	average	price	equal	to	the	unweighted	arithmetic	average	of	
hydrocarbon	prices	received	on	a	field-by-field	basis	on	the	first	day	of	each	month	within	the	applicable	fiscal	12-month	
period.	All	of	our	reserves	are	located	in	the	United	States.

Estimated Quantities of Proved Reserves

2012 

Oil 
(MBbl) 

Gas 
(MMcf)  

Total 
(MBOE) 

Oil 
(MBbl) 

2011 

Gas 
(MMcf) 

2010 

Total 
(MBOE) 

Oil 
(MBbl) 

Gas 
(MMcf) 

Total
(MBOE)

Year Ended December 31, 

Balance	at	beginning	of	year	

	 357,733	

	 625,208	

	 461,934	

	 338,276	

	 357,893	

	 397,925	

	 192,879	

	 87,975	

	 207,542

Revisions	of	previous	estimates	 	

(7,099)	

	 (16,720)	

Revisions	due	to	price	changes	

(401)	

	 (37,969)	

(9,886)	

(6,729)	

(4,478)	

	 (14,058)	

2,558	

485	

(6,821)	

2,639	

3,538	

2,780	

	 16,171	

811	

6,233

2,915

Extensions	and	discoveries	
Improved	recovery	(1)	
Production		

	 14,910	

	 10,005	

	 16,579	

	 42,936	

52,339	

	 51,658	

26,313	

	 130,245	

	 48,021

	 69,543	

—	

	 69,543	

264	

—	

264	

30,173	

—	

	 30,173

(24,462)	

	 (10,654)	

	 (26,238)	

	 (22,169)	

	 (10,783)	

	 (23,966)	

(21,870)	

	 (28,491)	

(26,619)

Acquisition	of	minerals	in	place	

	 24,677	

	 20,598	

	 28,110	

346	

	 239,332	

	 40,235	

	 155,021	

	 622,984	

	 258,852

Sales	of	minerals	in	place	

	 (105,777)	

	(108,827)	

	(123,915)	

—	

—	

—	

(50,558)	

	(471,802)	

	 (129,192)

Balance	at	end	of	year	

	 329,124	

	 481,641	

	 409,398	

	 357,733	

	 625,208	

	 461,934	

	 338,276	

	 357,893	

	 397,925

Proved	Developed	Reserves:

	 Balance	at	beginning	of	year	

	 239,741	

	 125,970	

	 260,736	

	 219,077	

	 110,516	

	 237,496	

	 116,192	

	 69,513	

	 127,778

	 Balance	at	end	of	year	

	 236,009	

	 64,191	

	 246,708	

	 239,741	

	 125,970	

	 260,736	

	 219,077	

	 110,516	

	 237,496

(1)	 Improved	recovery	reflects	reserve	additions	which	result	from	the	application	of	secondary	recovery	methods	such	as	water	flooding,	or	tertiary	recovery	

methods	such	as	CO2	flooding.	In	order	to	recognize	proved	tertiary	oil	reserves,	we	must	either	have	an	oil	production	response	to	CO2	injections	or	the	field	
must	be	analogous	to	an	existing	tertiary	flood.	The	magnitude	of	proved	reserves	that	we	can	book	in	any	given	year	will	depend	on	our	progress	with	new	
floods	and	the	timing	of	the	production	response.

 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
 
 
 
 
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
We	added	114.2	MMBOE	of	estimated	proved	reserves	during	2012,	including	tertiary	reserves	of	69.5	MMBbls,	primarily	

at	Hastings	and	Oyster	Bayou	fields,	25.9	MMBOE	from	the	acquisition	of	interests	in	the	Thompson,	Webster	and	
Hartzog	Draw	fields	and	11.5	MMBOE	from	our	Bakken	area	assets	prior	to	their	sale	in	the	fourth	quarter	of	2012.	These	
increases	were	offset	by	the	disposition	of	123.9	MMBOE	of	reserves	associated	with	disposed	properties,	including	our	
Bakken	area	assets,	and	non-core	assets	in	the	Gulf	Coast	region	and	Paradox	Basin	in	Utah.

Acquisitions	of	minerals	in	place	during	2011	were	primarily	related	to	the	acquisition	of	the	remaining	interest	in		

Riley	Ridge.	Extensions	and	discoveries	primarily	include	proved	undeveloped	reserves	and	were	added	primarily	through	
additional	drilling	in	the	Bakken.

Acquisitions	of	minerals	in	place	during	2010	were	primarily	from	the	Encore	Merger	and	the	initial	acquisition	of	
interests	at	Riley	Ridge.	The	sales	of	minerals	in	place	during	2010	were	primarily	due	to	the	sale	of	the	non-strategic	
Encore	properties	and	our	ownership	interests	in	ENP.	Extensions	and	discoveries	primarily	include	reserves	added		
at	our	Bakken	and	Haynesville	fields.	We	added	39.4	MMBbls	of	tertiary	proved	oil	reserves	during	2010,	primarily	initial	
proved	tertiary	oil	reserves	at	Delhi	Field,	plus	upward	revisions	to	reserves	in	other	tertiary	floods.

Standardized Measure of Discounted Future Net Cash Flows and Changes Therein Relating to Proved Oil and 
Natural Gas Reserves

The	Standardized	Measure	of	Discounted	Future	Net	Cash	Flows	and	Changes	Therein	Relating	to	Proved	Oil	and	Natural	

Gas	Reserves	(“Standardized	Measure”)	does	not	purport	to	present	the	fair	market	value	of	our	oil	and	natural	gas	
properties.	An	estimate	of	such	value	should	consider,	among	other	factors,	anticipated	future	prices	of	oil	and	natural	gas,	
the	probability	of	recoveries	in	excess	of	existing	proved	reserves,	the	value	of	probable	reserves	and	acreage	prospects,	
and	perhaps	different	discount	rates.	It	should	be	noted	that	estimates	of	reserve	quantities,	especially	from	new	
discoveries,	are	inherently	imprecise	and	subject	to	substantial	revision.

Under	the	Standardized	Measure,	future	cash	inflows	were	estimated	by	applying	a	first-day-of-the-month	12-month	
average	price	to	the	estimated	future	production	of	year-end	proved	reserves.	The	product	prices	used	in	calculating	these	
reserves	have	varied	widely	during	the	three-year	period.	These	prices	have	a	significant	impact	on	both	the	quantities	and	
value	of	the	proved	reserves,	as	reductions	in	oil	and	natural	gas	prices	can	cause	wells	to	reach	the	end	of	their	economic	
life	much	sooner	and	can	make	certain	proved	undeveloped	locations	uneconomical,	both	of	which	reduce	the	reserves.	
The	following	representative	oil	and	natural	gas	prices	were	used	in	the	Standardized	Measure.	These	prices	were	adjusted	
by	field	to	arrive	at	the	appropriate	corporate	net	price.

Oil	(NYMEX)	
Natural	Gas	(Henry	Hub)	

December 31,

2012 

$	94.71	
	 2.85	

2011 

$	96.19	
	 4.16	

2010

$	79.43
	 4.40

Future	cash	inflows	were	reduced	by	estimated	future	production,	development	and	abandonment	costs	based	on	
current	cost,	with	no	escalation	to	determine	pre-tax	cash	inflows.	Our	future	net	inflows	do	not	include	a	reduction	for	
cash	previously	expended	on	our	capitalized	CO2	assets	that	will	be	consumed	in	the	production	of	proved	tertiary	
reserves.	Future	income	taxes	were	computed	by	applying	the	statutory	tax	rate	to	the	excess	of	net	cash	inflows	over	our	
tax	basis	in	the	associated	proved	oil	and	natural	gas	properties.	Tax	credits	and	net	operating	loss	carryforwards	were		
also	considered	in	the	future	income	tax	calculation.	Future	net	cash	inflows	after	income	taxes	were	discounted	using	a	
10%	annual	discount	rate	to	arrive	at	the	Standardized	Measure.

In thousands 

Future	cash	inflows	
Future	production	costs	
Future	development	costs	
Future	income	taxes	
	 Future	net	cash	flows	
10%	annual	discount	for	estimated	timing	of	cash	flows	
	 Standardized	measure	of	discounted	future	net	cash	flows	

December 31,

2012 

2011 

2010

$	 34,779,549	
	 (13,114,740)	
(2,034,174)	
(6,672,857)	
	 12,957,778	
(6,543,398)	
$	 6,414,380	

$	38,165,122	
	 (12,570,015)	
(3,026,898)	
(7,379,972)	
	 15,188,237	
(8,180,632)	
$	 7,007,605	

$	26,698,819
	 (9,702,896)
	 (1,912,457)
	 (4,700,023)
	 10,383,443
	 (5,465,516)
$	 4,917,927

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The	following	table	sets	forth	an	analysis	of	changes	in	the	Standardized	Measure	of	Discounted	Future	Net	Cash	Flows	

from	proved	oil	and	natural	gas	reserves:

In thousands 

Beginning	of	year	
Sales	of	oil	and	natural	gas	produced,	net	of	production	costs	
Net	changes	in	sales	prices	
Extensions	and	discoveries,	less	applicable	future	development	and		
	 production	costs	
Improved	recovery	(1)	
Previously	estimated	development	costs	incurred	
Revisions	of	previous	estimates,	including	revised	estimates	of		
	 development	costs,	reserves	and	rates	of	production	
Accretion	of	discount	
Acquisition	of	minerals	in	place	
Sales	of	minerals	in	place	
Net	change	in	income	taxes	
End	of	year	

Year Ended December 31,

2012 

2011 

2010

$	 7,007,605	
	 (1,673,253)	
(584,526)	

291,558	
	 1,901,109	
376,199	

(797,975)	
875,383	
767,267	
	 (1,805,309)	
56,322	
$	 6,414,380	

$	 4,917,927	
	 (1,597,288)	
	 4,646,086	

$	 2,457,385
	 (1,177,322)
	 2,062,181

762,370	
15,708	
354,228	

	 (1,673,283)	
729,234	
29,737	
—	
	 (1,177,114)	
$	 7,007,605	

295,074
623,622
193,947

(285,158)
307,546
	 3,671,439
	 (1,474,443)
	 (1,756,344)
$	 4,917,927

(1)	 Improved	recovery	additions	result	from	the	application	of	secondary	recovery	methods	such	as	water	flooding	or	tertiary	recovery	methods	such	as		

CO2	flooding.

Note 15. Supplemental CO2 and Helium Disclosures (Unaudited)

Based	on	engineering	reports	prepared	by	DeGolyer	and	MacNaughton,	proved	CO2	reserves,	and	helium	reserves	

associated	with	our	helium	production	rights,	were	estimated	as	follows	(in	MMcf):

CO2 reserves
Gulf	Coast	region	(1)	
Rocky	Mountain	region	(2)	

Year Ended December 31,

2012 

2011 

2010

	 6,073,175	
	 3,495,534	

	 6,685,412	
	 2,195,534	

	 7,085,131
	 2,189,756

Helium reserves associated with Denbury’s production rights
Rocky	Mountain	region	(3)	

12,712	

12,004	

7,159

(1)	 Proved	CO2	reserves	in	the	Gulf	Coast	region	consist	of	reserves	from	our	reservoirs	at	Jackson	Dome	and	are	presented	on	a	gross	working	interest	(8/8ths)	
basis,	of	which	our	net	revenue	interest	was	approximately	4.8	Tcf,	5.3	Tcf	and	5.6	Tcf	at	December	31,	2012,	2011	and	2010,	respectively,	and	include	reserves	
dedicated	to	volumetric	production	payments	of	57.1	Bcf,	84.7	Bcf	and	100.2	Bcf	at	December	31,	2012,	2011	and	2010,	respectively.

(2)	 Proved	CO2	reserves	in	the	Rocky	Mountain	region	consist	of	our	reserves	at	Riley	Ridge	(presented	on	a	gross	working	interest	(8/8ths)	basis)	and	our	

overriding	royalty	interest	in	LaBarge	Field,	of	which	our	net	revenue	interest	was	approximately	2.9	Tcf,	1.6	Tcf	and	0.9	Tcf	at	December	31,	2012,	2011	and	
2010,	respectively.

(3)	 Reserves	associated	with	helium	production	rights	include	helium	reserves	located	in	acreage	in	the	Rocky	Mountain	region	for	which	we	have	the	right	to	

extract	the	helium.	The	U.S.	government	retains	title	to	the	helium	reserves	and	we	retain	the	right	to	extract	and	sell	the	helium	on	behalf	of	the	government	
in	exchange	for	a	fee.	The	helium	reserves	are	presented	net	of	the	fee	we	will	remit	to	the	U.S.	government.

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Note 16. Unaudited Quarterly Information

In thousands, except per share amounts 

March 31 

June 30 

September 30  December 31

2012
Revenues	and	other	income	
Derivatives	expense	(income)	
Other	expenses	
Net	income	
Net	income	per	share:
	 Basic	
	 Diluted	 	
Cash	flow	provided	by	operating	activities	
Cash	flow	used	for	investing	activities	
Cash	flow	provided	by	(used	for)	financing	activities	

2011
Revenues	and	other	income	
Derivatives	expense	(income)	
Other	expenses	
Net	income	(loss)	
Net	income	(loss)	per	share:
	 Basic	
	 Diluted	 	
Cash	flow	provided	by	operating	activities	
Cash	flow	used	for	investing	activities	
Cash	flow	provided	by	(used	for)	financing	activities	

$	645,116	
45,275	
	 420,529	
	 113,467	

0.29	
0.29	
	 291,654	
	 (288,883)	
55,902	

$	514,165	
	 170,750	
	 366,361	
(14,190)	

(0.04)	
(0.04)	
	 124,832	
	 (285,043)	
(93,801)	

$	601,781	
	 (139,109)	
	 398,089	
	 211,865	

0.55	
0.54	
	 440,966	
	 (560,341)	
70,122	

$	601,397	
	 (172,904)	
	 350,499	
	 259,246	

0.65	
0.64	
	 398,521	
	 (347,797)	
(56,789)	

$	600,371	
61,631	
	 399,361	
85,367	

0.22	
0.22	
	 293,506	
	 (388,748)	
91,163	

$	576,505	
	 (210,154)	
	 343,339	
	 275,670	

0.69	
0.68	
	 315,739	
	 (525,412)	
	 112,244	

$	609,204
27,369
	 386,470
	 114,661

0.30
0.30
	 384,765
	 (138,869)
	 (118,676)

$	617,257
	 159,811
	 377,577
52,607

0.14
0.13
	 365,722
	 (447,706)
76,314

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Item 9. Changes in and Disagreements with Accountants  
on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

As	of	the	end	of	the	period	covered	by	this	report,	an	evaluation	of	the	effectiveness	of	the	design	and	operation	of	our	

disclosure	controls	and	procedures	(as	defined	in	Rule	13a-15(e)	under	the	Exchange	Act)	was	performed	under	the	
supervision	and	with	the	participation	of	management,	including	our	Chief	Executive	Officer	and	our	Chief	Financial	Officer.	
Based	on	that	evaluation,	our	Chief	Executive	Officer	and	Chief	Financial	Officer	concluded	that	our	disclosure	controls		
and	procedures	were	effective	as	of	December	31,	2012,	to	ensure:	that	information	that	is	required	to	be	disclosed	in	the	
reports	the	Company	files	and	submits	under	the	Securities	Exchange	Act	of	1934	is	recorded,	that	is	processed,	
summarized	and	reported	within	the	time	periods	specified	in	the	SEC’s	rules	and	forms;	and	that	information	that	is	
required	to	be	disclosed	under	the	Exchange	Act	is	accumulated	and	communicated	to	management,	including	our	Chief	
Executive	Officer	and	our	Chief	Financial	Officer,	as	appropriate	to	allow	timely	decisions	regarding	required	disclosure.

Evaluation of Changes in Internal Control over Financial Reporting

Under	the	supervision	and	with	the	participation	of	our	management,	including	our	Chief	Executive	Officer	and	our		

Chief	Financial	Officer,	we	have	determined	that,	during	the	fourth	quarter	of	fiscal	2012,	there	were	no	changes	in		
our	internal	control	over	financial	reporting	that	have	materially	affected,	or	are	reasonably	likely	to	materially	affect,	
our	internal	control	over	financial	reporting.

Management’s Report on Internal Control over Financial Reporting

Our	management	is	responsible	for	establishing	and	maintaining	adequate	internal	control	over	financial	reporting	as	
defined	in	Rules	13a-15(f)	and	15d-15(f)	of	the	Securities	Exchange	Act	of	1934,	as	amended.	Under	the	supervision	and	with	
the	participation	of	our	management,	including	our	Chief	Executive	Officer	and	our	Chief	Financial	Officer,	we	assessed		
the	effectiveness	of	our	internal	control	over	financial	reporting	as	of	the	end	of	the	period	covered	by	this	report	based	on	
the	framework	in	“Internal	Control	–	Integrated	Framework”	issued	by	the	Committee	of	Sponsoring	Organizations	of	the	
Treadway	Commission.	Based	on	that	assessment,	our	Chief	Executive	Officer	and	our	Chief	Financial	Officer	concluded	
that	our	internal	control	over	financial	reporting	was	effective	to	provide	reasonable	assurance	regarding	the	reliability	of	
our	financial	reporting	and	the	preparation	of	our	financial	statements	for	external	purposes	in	accordance	with	U.S.	
generally	accepted	accounting	principles.

The	effectiveness	of	our	internal	control	over	financial	reporting	as	of	December	31,	2012,	has	been	audited	by	

PricewaterhouseCoopers	LLP,	an	independent	registered	public	accounting	firm,	as	stated	in	the	report	that	appears	herein.

Important Considerations

The	effectiveness	of	our	disclosure	controls	and	procedures	and	our	internal	control	over	financial	reporting	is	subject	to	

various	inherent	limitations,	including	cost	limitations,	judgments	used	in	decision	making,	assumptions	about	the	
likelihood	of	future	events,	the	soundness	of	our	systems,	the	possibility	of	human	error,	and	the	risk	of	fraud.	Moreover,	
projections	of	any	evaluation	of	effectiveness	to	future	periods	are	subject	to	the	risk	that	controls	may	become	
inadequate	because	of	changes	in	conditions	and	the	risk	that	the	degree	of	compliance	with	policies	or	procedures	may	
deteriorate	over	time.	Because	of	these	limitations,	there	can	be	no	assurance	that	any	system	of	disclosure	controls		
and	procedures	or	internal	control	over	financial	reporting	will	be	successful	in	preventing	all	errors	or	fraud	or	in	making	
all	material	information	known	in	a	timely	manner	to	the	appropriate	levels	of	management.

Item 9B. Other Information

None.

 
 
 
 
 
Item 10. Directors, Executive Officers and Corporate Governance

Except	as	disclosed	below,	information	as	to	Item	10	will	be	set	forth	in	the	Proxy	Statement	(“Proxy	Statement”)	for		
the	Annual	Meeting	of	Shareholders	to	be	held	May	22,	2013	(“Annual	Meeting”)	and	is	incorporated	herein	by	reference.

Code of Ethics

We	have	adopted	a	Code	of	Ethics	for	Senior	Financial	Officers	and	the	Principal	Executive	Officer.	This	Code	of	Ethics,	

including	any	amendments	or	waivers,	is	posted	on	our	website	at	www.denbury.com.

Item 11. Executive Compensation

Information	as	to	Item	11	will	be	set	forth	in	the	Proxy	Statement	for	the	Annual	Meeting	and	is	incorporated	herein		

by	reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and 
Related Stockholder Matters

Information	as	to	Item	12	will	be	set	forth	in	the	Proxy	Statement	for	the	Annual	Meeting	and	is	incorporated	herein		

by	reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence

Information	as	to	Item	13	will	be	set	forth	in	the	Proxy	Statement	for	the	Annual	Meeting	and	is	incorporated	herein		

by	reference.

Item 14. Principal Accountant Fees and Services

Information	as	to	Item	14	will	be	set	forth	in	the	Proxy	Statement	for	the	Annual	Meeting	and	is	incorporated	herein		

by	reference.

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Item 15. Exhibits and Financial Statement Schedules

Financial  Statements  and  Schedules.	Financial	statements	and	schedules	filed	as	a	part	of	this	report	are	
presented	on	page	60.	All	financial	statement	schedules	have	been	omitted	because	they	are	not	applicable,	or	the	
required	information	is	presented	in	the	financial	statements	or	the	notes	to	consolidated	financial	statements.

Exhibits.	The	following	exhibits	are	included	as	part	of	this	report.

Exhibit No.  Exhibit

2(a)	

2(b)	

2(c)	

2(d)	

2(e)	

3(a)	

3(b)	

4(a)	

4(b)	

4(c)**	

4(d)	

4(e)	

4(f)	

Agreement	and	Plan	of	Merger,	dated	as	of	October	31,	2009,	by	and	between	Encore	Acquisition	Company	
and	Denbury	Resources	Inc.	(incorporated	by	reference	to	Exhibit	2.1	of	Form	8-K	filed	by	the	Company	on	
November	5,	2009,	File	No.	001-12935).

Exchange	Agreement,	dated	as	of	September	19,	2012,	by	and	among	Denbury	Onshore,	LLC,	XTO	Energy	
Inc.,	and	Exxon	Mobil	Corporation	(incorporated	by	reference	to	Exhibit	2.1	of	Form	8-K	filed	by	the	
Company	on	September	25,	2012,	File	No.	001-12935).

Closing	Agreement	and	Amendment,	dated	as	of	November	30,	2012,	by	and	among	Denbury	Onshore,	LLC,	
XTO	Energy	Inc.,	and	Exxon	Mobil	Corporation	(incorporated	by	reference	to	Exhibit	2.2	of	Form	8-K	filed	
by	the	Company	on	December	6,	2012,	File	No.	001-12935).

Second	Closing	Agreement	and	Amendment,	dated	as	of	December	21,	2012,	by	and	among	Denbury	
Onshore,	LLC,	XTO	Energy	Inc.,	and	Exxon	Mobil	Corporation	(incorporated	by	reference	to	Exhibit	2.1	of	
Form	8-K	filed	by	the	Company	on	December	26,	2012,	File	No.	001-12935).

Purchase	and	Sale	Agreement,	dated	as	of	January	14,	2013,	by	and	between	Burlington	Resources	Oil	&	
Gas	Company	LP	and	Denbury	Onshore,	LLC	(incorporated	by	reference	to	Exhibit	2.1	of	Form	8-K	filed	by	
the	Company	on	January	15,	2013,	File	No.	001-12935).

Second	Restated	Certificate	of	Incorporation	of	Denbury	Resources	Inc.	filed	with	the	Delaware	Secretary	
of	State	on	August	21,	2012	(incorporated	by	reference	to	Exhibit	3(a)	of	Form	10-Q	filed	by	the	Company	
on	November	8,	2012,	File	No.	001-12935).

Amended	and	Restated	Bylaws	of	Denbury	Resources	Inc.	as	of	May	15,	2012	(incorporated	by	reference	
to	Exhibit	3.2	of	Form	8-K	filed	by	the	Company	on	May	21,	2012,	File	No.	001-12935).

Indenture	for	9.75%	Senior	Subordinated	Notes	due	2016,	dated	as	of	February	13,	2009,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	The	Bank	of	New	York	Mellon	Trust	Company,	N.A.,	
as	Trustee	(incorporated	by	reference	to	Exhibit	4.1	of	Form	8-K	filed	by	the	Company	on	February	17,	2009,	
File	No.	001-12935).

First	Supplemental	Indenture	for	9.75%	Senior	Subordinated	Notes	due	2016,	dated	as	of	June	30,	2009,	by	
and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	The	Bank	of	New	York	Mellon	Trust	
Company,	N.A.,	as	Trustee	(incorporated	by	reference	to	Exhibit	4(h)	of	Form	10-K	filed	by	the	Company	on	
March	1,	2010,	File	No.	001-12935).

9.75%	Senior	Subordinated	Note	due	2016	issued	on	June	30,	2009	to	Gareth	Roberts	(incorporated	by	
reference	to	Exhibit	10.2	of	Form	8-K	filed	by	the	Company	on	July	7,	2009,	File	No.	001-12935).

Second	Supplemental	Indenture	for	9.75%	Senior	Subordinated	Notes	due	2016,	dated	as	of	March	9,	2010,	
by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	The	Bank	of	New	York	Mellon	Trust	
Company,	N.A.,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.6	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Third	Supplemental	Indenture	for	9.75%	Senior	Subordinated	Notes	due	2016,	dated	as	of	February	3,	2011,	
by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	The	Bank	of	New	York	Mellon	Trust	
Company,	N.A.,	as	Trustee	(incorporated	by	reference	to	Exhibit	4(p)	of	Form	10-K	filed	by	the	Company	on	
March	1,	2011,	File	No.	001-12935).

Indenture	for	8¼%	Senior	Subordinated	Notes	due	2020,	dated	as	of	February	10,	2010,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as	Trustee	
(incorporated	by	reference	to	Exhibit	4.1	of	Form	8-K	filed	by	the	Company	on	February	12,	2010,	File		
No.	001-12935).

 
 
 
 
 
Exhibit No.  Exhibit

4(g)	

4(h)	

4(i)	

4(j)	

4(k)	

4(l)	

4(m)	

4(n)	

4(o)	

4(p)	

4(q)	

4(r)	

First	Supplemental	Indenture	for	8¼%	Senior	Subordinated	Notes	due	2020,	dated	as	of	March	9,	2010,		
by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.7	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Second	Supplemental	Indenture	for	8¼%	Senior	Subordinated	Notes	due	2020,	dated	as	of	February	3,	
2011,	by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4(s)	of	Form	10-K	filed	by	the	Company	on	
March	1,	2011,	File	No.	001-12935).

Indenture	for	6.25%	Senior	Subordinated	Notes	Due	2014,	dated	as	of	April	2,	2004,	by	and	among	Encore	
Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as		
Trustee	(incorporated	by	reference	to	Exhibit	4.1.1	of	Form	8-K	filed	by	the	Company	on	March	12,	2010,	
File	No.	001-12935).

First	Supplemental	Indenture	for	6.25%	Senior	Subordinated	Notes	Due	2014,	dated	as	of	January	2,	2008,	
by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.1.2	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Second	Supplemental	Indenture	for	6.25%	Senior	Subordinated	Notes	Due	2014,	dated	as	of	January	27,	
2010,	by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	
National	Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.1.3	of	Form	8-K	filed	by	the	
Company	on	March	12,	2010,	File	No.	001-12935).

Third	Supplemental	Indenture	for	6.25%	Senior	Subordinated	Notes	Due	2014,	dated	as	of	March	10,	2010,	
by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.1.4	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Fourth	Supplemental	Indenture	for	6.25%	Senior	Subordinated	Notes	Due	2014,	dated	as	of	February	3,	
2011,	by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4(x)	of	Form	10-K	filed	by	the	Company	on	
March	1,	2011,	File	No.	001-12935).

Indenture	for	6.0%	Senior	Subordinated	Notes	due	2015,	dated	as	of	July	13,	2005,	by	and	among	Encore	
Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as		
Trustee	(incorporated	by	reference	to	Exhibit	4.2.1	of	Form	8-K	filed	by	the	Company	on	March	12,	2010,	
File	No.	001-12935).

First	Supplemental	Indenture	for	6.0%	Senior	Subordinated	Notes	due	2015,	dated	as	of	January	2,	2008,	
by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,		
National	Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.2.2	of	Form	8-K	filed	by	the	
Company	on	March	12,	2010,	File	No.	001-12935).

Second	Supplemental	Indenture	for	6.0%	Senior	Subordinated	Notes	due	2015,	dated	as	of	January	27,	
2010,	by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	
National	Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.2.3	of	Form	8-K	filed	by	the	
Company	on	March	12,	2010,	File	No.	001-12935).

Third	Supplemental	Indenture	for	6.0%	Senior	Subordinated	Notes	due	2015,	dated	as	of	March	10,	2010,	
by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.2.4	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Fourth	Supplemental	Indenture	for	6.0%	Senior	Subordinated	Notes	due	2015,	dated	as	of	February	3,	
2011,	by	and	among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4(cc)	of	Form	10-K	filed	by	the	Company	on	
March	1,	2011,	File	No.	001-12935).

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Exhibit No.  Exhibit

4(s)	

4(t)	

4(u)	

4(v)	

4(w)	

4(x)	

4(y)	

4(z)	

4(aa)	

4(bb)	

10(a)	

10(b)	

Indenture	for	Subordinated	Debt	Securities,	dated	as	of	November	16,	2005,	by	and	among	Encore	
Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as	Trustee	
(incorporated	by	reference	to	Exhibit	4.3.1	of	Form	8-K	filed	by	the	Company	on	March	12,	2010,	File		
No.	001-12935).

First	Supplemental	Indenture	for	7.25%	Senior	Subordinated	Notes	due	2017,	dated	as	of	November	23,	
2005,	by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	
National	Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.3.2	of	Form	8-K	filed	by	the	
Company	on	March	12,	2010,	File	No.	001-12935).

Second	Supplemental	Indenture	for	7.25%	Senior	Subordinated	Notes	due	2017,	dated	as	of	January	2,	
2008,	by	and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	
National	Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.3.3	of	Form	8-K	filed	by	the	
Company	on	March	12,	2010,	File	No.	001-12935).

Third	Supplemental	Indenture	for	9.5%	Senior	Subordinated	Notes	due	2016,	dated	as	of	April	27,	2009,	by	
and	among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.3.4	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Fourth	Supplemental	Indenture	for	Senior	Subordinated	Notes,	dated	as	of	January	27,	2010,	by	and	
among	Encore	Acquisition	Company,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	
Association,	as	Trustee	(incorporated	by	reference	to	Exhibit	4.3.5	of	Form	8-K	filed	by	the	Company	on	
March	12,	2010,	File	No.	001-12935).

Fifth	Supplemental	Indenture	for	Senior	Subordinated	Notes,	dated	as	of	March	10,	2010,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as		
Trustee	(incorporated	by	reference	to	Exhibit	4.3.6	of	Form	8-K	filed	by	the	Company	on	March	12,	2010,	
File	No.	001-12935).

Sixth	Supplemental	Indenture	for	Senior	Subordinated	Notes,	dated	as	of	February	3,	2011,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as		
Trustee	(incorporated	by	reference	to	Exhibit	4(jj)	of	Form	10-K	filed	by	the	Company	on	March	1,	2011,	File	
No.	001-12935).

Seventh	Supplemental	Indenture	for	Senior	Subordinated	Notes,	dated	as	of	February	5,	2013,	by	and	
among	Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as	
Trustee	(incorporated	by	reference	to	Exhibit	4.2	of	Form	8-K	filed	by	the	Company	on	February	5,	2013,	
File	No.	001-12935).

Indenture	for	63/8%	Senior	Subordinated	Notes	due	2021,	dated	as	of	February	17,	2011,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as	
Trustee,	(incorporated	by	reference	to	Exhibit	4.1	of	Form	8-K	filed	by	the	Company	on	February	22,	2011,	
File	No.	001-12935).

Indenture	for	4 5/8%	Senior	Subordinated	Notes	due	2023,	dated	as	of	February	5,	2013,	by	and	among	
Denbury	Resources	Inc.,	certain	of	its	subsidiaries,	and	Wells	Fargo	Bank,	National	Association,	as		
Trustee	(incorporated	by	reference	to	Exhibit	4.1	of	Form	8-K	filed	by	the	Company	on	February	5,	2013,	
File	No.	001-12935).

Credit	Agreement,	dated	as	of	March	9,	2010,	by	and	among	Denbury	Resources	Inc.,	as	Borrower,	
JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	party	thereto	
(incorporated	by	reference	to	Exhibit	10.1	of	Form	8-K	filed	by	the	Company	on	March	12,	2010,		
File	No.	001-12935).

First	Amendment	to	Credit	Agreement,	dated	as	of	May	13,	2010,	by	and	among	Denbury	Resources	Inc.,	
as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	party	
thereto	(incorporated	by	reference	to	Exhibit	10.1	of	Form	8-K	filed	by	the	Company	on	May	19,	2010,		
File	No.	001-12935).

 
 
 
 
 
Exhibit No.  Exhibit

10(c)	

10(d)	

10(e)	

10(f)	

10(g)	

10(h)	

10(i)	

10(j)	

10(k)*	

10(l)	

10(m)	

10(n)	

Second	Amendment	to	Credit	Agreement,	dated	as	of	September	30,	2010,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	party	
thereto	(incorporated	by	reference	to	Exhibit	10.1	of	Form	10-Q	filed	by	the	Company	on	November	9,	2010,	
File	No.	001-12935).

Third	Amendment	to	Credit	Agreement,	dated	as	of	December	17,	2010,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto	(incorporated	by	reference	to	Exhibit	10(d)	of	Form	10-K	filed	by	the	Company	on	March	1,	
2011,	File	No.	001-12935).

Fourth	Amendment	to	Credit	Agreement,	dated	as	of	February	1,	2011,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto	(incorporated	by	reference	to	Exhibit	10(e)	of	Form	10-K	filed	by	the	Company	on	March	1,	
2011,	File	No.	001-12935).

Fifth	Amendment	to	Credit	Agreement,	dated	as	of	May	19,	2011,	by	and	among	Denbury	Resources	Inc.,	
as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	party	
thereto	(incorporated	by	reference	to	Exhibit	99.1	of	Form	8-K	filed	by	the	Company	on	May	20,	2011,	File	
No.	001-12935).

Sixth	Amendment	to	Credit	Agreement,	dated	as	of	September	1,	2011,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto	(incorporated	by	reference	to	Exhibit	10.1	of	Form	8-K	filed	by	the	Company	on	September	8,	
2011,	File	No.	001-12935).

Seventh	Amendment	to	Credit	Agreement,	dated	as	of	April	11,	2012,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto	(incorporated	by	reference	to	Exhibit	4(a)	of	Form	10-Q	filed	by	the	Company	on	May	10,	
2012,	File	No.	001-12935).

Eighth	Amendment	to	Credit	Agreement,	dated	as	of	July	26,	2012,	by	and	among	Denbury	Resources	Inc.,	
as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	party	
thereto	(incorporated	by	reference	to	Exhibit	4(a)	of	Form	10-Q	filed	by	the	Company	on	August	8,	2012,	
File	No.	001-12935).

Ninth	Amendment	to	Credit	Agreement,	dated	as	of	November	2,	2012,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto	(incorporated	by	reference	to	Exhibit	10(a)	of	Form	10-Q	filed	by	the	Company	on	November	8,	
2012,	File	No.	001-12935).

Tenth	Amendment	to	Credit	Agreement,	dated	as	of	January	18,	2013,	by	and	among	Denbury	Resources	
Inc.,	as	Borrower,	JPMorgan	Chase	Bank,	N.A.,	as	Administrative	Agent,	and	the	financial	institutions	
party	thereto.

Pipeline	Financing	Lease	Agreement,	dated	as	of	May	30,	2008,	by	and	between	Genesis	NEJD	Pipeline,	
LLC,	as	Lessor,	and	Denbury	Onshore,	LLC,	as	Lessee	(incorporated	by	reference	to	Exhibit	99.1	of	Form	8-K	
filed	by	the	Company	on	June	5,	2008,	File	No.	001-12935).

Transportation	Services	Agreement,	dated	as	of	May	30,	2008,	by	and	between	Genesis	Free	State	
Pipeline,	LLC	and	Denbury	Onshore,	LLC	(incorporated	by	reference	to	Exhibit	99.2	of	Form	8-K	filed	by	the	
Company	on	June	5,	2008,	File	No.	001-12935).

Purchase	and	Sale	Agreement,	dated	as	of	March	31,	2010,	effective	as	of	May	1,	2010,	by	and	between	
Encore	Operating,	L.P.,	as	Seller,	and	Quantum	Resources	Management,	LLC,	as	Buyer	(incorporated	by	
reference	to	Exhibit	10.6	of	Form	10-Q	filed	by	the	Company	on	May	10,	2010,	File	No.	001-12935).

10(o)**	

Denbury	Resources	Inc.	Amended	and	Restated	Stock	Option	Plan,	effective	as	of	December	5,	2007	
(incorporated	by	reference	to	Exhibit	99.2	of	Form	8-K	filed	by	the	Company	on	December	11,	2007,	 	
File	No.	001-12935).

105

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106

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Exhibit No.  Exhibit

10(p)**	

10(q)**	

10(r)**	

10(s)**	

10(t)**	

Denbury	Resources	Inc.	Amended	and	Restated	Employee	Stock	Purchase	Plan,	effective	as	of		
December	5,	2007	(incorporated	by	reference	to	Exhibit	99.4	of	Form	8-K	filed	by	the	Company	on	
December	11,	2007,	File	No.	001-12935).

Denbury	Resources	Inc.	Amendment	to	Amended	and	Restated	Employee	Stock	Purchase	Plan	
(incorporated	by	reference	to	Exhibit	4.2	of	Registration	Statement	on	Form	S-8	filed	by	the	Company	on	
June	23,	2009,	File	No.	333-160178).

Denbury	Resources	Inc.	Amendment	to	Amended	and	Restated	Employee	Stock	Purchase	Plan	
(incorporated	by	reference	to	Exhibit	4.2	of	Post-Effective	Amendment	No.	1	to	Form	S-8	filed	by	the	
Company	on	September	9,	2009,	File	No.	333-160178).

Denbury	Resources	Inc.	Amendment	to	Amended	and	Restated	Employee	Stock	Purchase	Plan,		
effective	as	of	May	18,	2011	(incorporated	by	reference	to	Exhibit	4.1	of	Registration	Statement	on		
Form	S-8	filed	by	the	Company	on	June	30,	2011,	File	No.	333-175273).

Form	of	Indemnification	Agreement,	dated	as	of	July	28,	1999,	by	and	between	Denbury	Resources	Inc.	and	
its	officers	and	directors	(incorporated	by	reference	to	Exhibit	10	of	Form	10-Q	filed	by	the	Company	on	
August	11,	1999,	File	No.	001-12935).

10(u)*	**	

Denbury	Resources	Inc.	Director	Deferred	Compensation	Plan,	as	amended	and	restated	effective	as	of	
December	13,	2012.

10(v)*	 **	

Denbury	Resources	Inc.	Severance	Protection	Plan,	as	amended	and	restated	effective	as	of		
December	13,	2012.

10(w)*	**	

Denbury	Resources	Inc.	2004	Omnibus	Stock	and	Incentive	Plan,	as	amended	and	restated	on		
December	13,	2012.

10(x)**	

10(y)**	

10(z)**	

10(aa)**	

10(bb)**	

10(cc)**	

10(dd)**	

10(ee)**	

2004	Form	of	Restricted	Stock	Award	that	vests	on	retirement	for	grants	to	officers	pursuant	to	the		
2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	reference	to		
Exhibit	10(l)	of	Form	10-K	filed	by	the	Company	on	March	15,	2005,	File	No.	001-12935).

2009	Form	of	Restricted	Stock	Award	to	certain	officers	that	cliff	vests	on	March	31,	2012,	pursuant		
to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	reference	to	
Exhibit	10(b)	of	Form	10-Q	filed	by	the	Company	on	May	11,	2009,	File	No.	001-12935).

2009	Form	of	Restricted	Stock	Award	without	change	of	control	vesting	to	certain	officers	that	cliff		
vests	on	March	31,	2012,	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	
Inc.	(incorporated	by	reference	to	Exhibit	10(c)	of	Form	10-Q	filed	by	the	Company	on	May	11,	2009,		
File	No.	001-12935).

2009	Form	of	Performance	Stock	Award	to	certain	officers	pursuant	to	the	2004	Omnibus	Stock	and	
Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	reference	to	Exhibit	10(d)	of	Form	10-Q	filed	by	
the	Company	on	May	11,	2009,	File	No.	001-12935).

2009	Form	of	Performance	Stock	Award	without	change	of	control	vesting	to	certain	officers	pursuant		
to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	reference	to	
Exhibit	10(e)	of	Form	10-Q	filed	by	the	Company	on	May	11,	2009,	File	No.	001-12935).

2009	Form	of	Stock	Appreciation	Rights	Agreement	to	certain	officers	that	cliff	vests	on	March	31,	2012	
pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	
reference	to	Exhibit	10(f)	of	Form	10-Q	filed	by	the	Company	on	May	11,	2009,	File	No.	001-12935).

2009	Form	of	Stock	Appreciation	Rights	Agreement	without	change	of	control	vesting	pursuant	to		
the	2004	Omnibus	Stock	and	Incentive	Plan	for	Denbury	Resources	Inc.	(incorporated	by	reference	to	
Exhibit	10(g)	of	Form	10-Q	filed	by	the	Company	on	May	11,	2009,	File	No.	001-12935).

2010	Form	of	Performance	Stock	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	
Denbury	Resources	Inc.	(incorporated	by	reference	to	Exhibit	99.2	of	Form	8-K	filed	by	the	Company	on	
May	25,	2010,	File	No.	001-12935).

 
 
 
 
 
Exhibit No.  Exhibit

10(ff)**	

10(gg)**	

10(hh)**	

10(ii)**	

10(jj)**	

10(kk)**	

10(ll)**	

2010	Form	of	Performance	Cash	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	for	
Denbury	Resources	Inc.	(incorporated	by	reference	to	Exhibit	99.3	of	Form	8-K	filed	by	the	Company	on	
May	25,	2010,	File	No.	001-12935).

Founder’s	Retirement	Agreement,	effective	as	of	June	30,	2009,	by	and	between	Denbury	Resources	Inc.	
and	Gareth	Roberts	(incorporated	by	reference	to	Exhibit	10.1	of	Form	8-K	filed	by	the	Company	on	July	7,	
2009,	File	No.	001-12935).

Amendment	to	Founder’s	Retirement	Agreement,	effective	as	of	October	6,	2010,	by	and	between		
Denbury	Resources	Inc.	and	Gareth	Roberts	(incorporated	by	reference	to	Form	8-K	filed	by	the	Company	
on	October	12,	2010,	File	No.	001-12935).

2011	Form	of	Performance	Stock	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	(incorporated	
by	reference	to	Exhibit	10(a)	to	Form	10-Q	filed	by	the	Company	on	May	10,	2011,		
File	No.	001-12935).

2011	Form	of	Performance	Cash	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	(incorporated	
by	reference	to	Exhibit	10(b)	to	Form	10-Q	filed	by	the	Company	on	May	10,	2011,		
File	No.	001-12935).

Officer	Resignation	Agreement,	effective	as	of	October	7,	2011,	by	and	between	Denbury	Resources	Inc.	
and	Ronald	T.	Evans	(incorporated	by	reference	to	Exhibit	10.1	of	Form	10-Q	filed	by	the	Company	on	
November	8,	2011,	File	No.	001-12935).

2012	Form	of	Performance	Stock	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	(incorporated	
by	reference	to	Exhibit	10(a)	of	Form	10-Q	filed	by	the	Company	on	May	10,	2012,		
File	No.	001-12935).

10(mm)**	

2012	Form	of	Performance	Cash	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	(incorporated	
by	reference	to	Exhibit	10(b)	of	Form	10-Q	filed	by	the	Company	on	May	10,	2012,		
File	No.	001-12935).

10(nn)**	

2012	Form	of	TSR	Performance	Award	pursuant	to	the	2004	Omnibus	Stock	and	Incentive	Plan	(incorporated	
by	reference	to	Exhibit	10(c)	of	Form	10-Q	filed	by	the	Company	on	May	10,	2012,		
File	No.	001-12935).

21*	

List	of	subsidiaries	of	Denbury	Resources	Inc.

23(a)*	

Consent	of	PricewaterhouseCoopers	LLP.

23(b)*	

Consent	of	DeGolyer	and	MacNaughton.

31(a)*	

Certification	of	Chief	Executive	Officer	Pursuant	to	Section	302	of	Sarbanes-Oxley	Act	of	2002.

31(b)*	

Certification	of	Chief	Financial	Officer	Pursuant	to	Section	302	of	Sarbanes-Oxley	Act	of	2002.

32*	

99*	

Certification	of	Chief	Executive	Officer	and	Chief	Financial	Officer	Pursuant	to	Section	906	of	the	
Sarbanes-Oxley	Act	of	2002.

The	summary	of	DeGolyer	and	MacNaughton’s	Report	as	of	December	31,	2012,	on	oil	and	gas	reserves	
(SEC	Case)	dated	January	31,	2013.

	 *		 Filed	herewith.

**		 Compensation	arrangements.

Copies	of	the	above	exhibits	not	contained	herein	are	available	to	any	security	holder	upon	request	to	the	Secretary,	Denbury	Resources	Inc.,	

5320	Legacy	Drive,	Plano,	Texas	75024.

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Exhibit 21

LIST OF SUBSIDIARIES

Name Of Subsidiary 

Jurisdiction Of Organization

Denbury	Operating	Company	

Denbury	Onshore,	LLC	

Denbury	Pipeline	Holdings,	LLC	

Denbury	Holdings,	Inc.	

Denbury	Green	Pipeline	–	Texas,	LLC	

Greencore	Pipeline	Company,	LLC	

Denbury	Gulf	Coast	Pipelines,	LLC	

Delaware

Delaware

Delaware

Delaware

Delaware

Delaware

Delaware

108

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SIGNATURES

Pursuant	to	the	requirements	of	Section	13	or	15(d)	of	the	Securities	Exchange	Act	of	1934,	Denbury	Resources	Inc.	has	

duly	caused	this	report	to	be	signed	on	its	behalf	by	the	undersigned,	thereunto	duly	authorized.

DENBURY RESOURCES INC.

/s/	Mark	C.	Allen	

February	28,	2013

/s/	Alan	Rhoades	

February	28,	2013

Mark	C.	Allen
Sr.	Vice	President	and	Chief	Financial	Officer

Alan	Rhoades
Vice	President	and	Chief	Accounting	Officer

Pursuant	to	the	requirements	of	the	Securities	Exchange	Act	of	1934,	this	report	has	been	signed	below	by	the	following	

persons	on	behalf	of	Denbury	Resources	Inc.	and	in	the	capacities	and	on	the	dates	indicated.

/s/	Phil	Rykhoek	

February	28,	2013

/s/	Ron	Greene	

February	28,	2013

Phil	Rykhoek
Director,	President	and	Chief	Executive	Officer
(Principal	Executive	Officer)

Ron	Greene
Director

/s/	Mark	C.	Allen	

February	28,	2013

/s/	Greg	McMichael	

February	28,	2013

Mark	C.	Allen
Sr.	Vice	President	and	Chief	Financial	Officer
(Principal	Financial	Officer)

Greg	McMichael
Director

/s/	Alan	Rhoades	

February	28,	2013

/s/	Kevin	Meyers	

February	28,	2013

Alan	Rhoades
Vice	President	and	Chief	Accounting	Officer
(Principal	Accounting	Officer)

Kevin	Meyers

Director

/s/	Wieland	Wettstein	

February	28,	2013

/s/	Randy	Stein	

February	28,	2013

Wieland	Wettstein
Director

Randy	Stein

Director

/s/	Michael	Beatty	

February	28,	2013

/s/	Laura	Sugg	

February	28,	2013

Michael	Beatty
Director

Laura	Sugg
Director

/s/	Michael	Decker	

February	28,	2013

Michael	Decker
Director

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Exhibit 23(a)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We	hereby	consent	to	the	incorporation	by	reference	in	the	Registration	Statements	on	Form	S-8	(Nos.	333-01006,	
333-27995,	333-55999,	333-70485,	333-39172,	333-39218,	333-39224,	333-63198,	333-90398,	333-106253,	333-116249,	333-143848,	
333-160178,	333-167480	and	333-175273)	and	Form	S-3	(No.	333-186112)	of	Denbury	Resources	Inc.	of	our	report	dated	
February	28,	2013	relating	to	the	consolidated	financial	statements	and	the	effectiveness	of	internal	control	over	financial	
reporting,	which	appears	in	this	Form	10-K.

/s/	PricewaterhouseCoopers	LLP

PricewaterhouseCoopers	LLP
Dallas,	Texas
February	28,	2013

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Exhibit 23(b)

DEGOLYER AND MACNAUGHTON
5001	Spring	Valley	Road
Suite	800	East
Dallas,	Texas	75244

February	27,	2013

DE NBURY RESOURCES INC.
5320	Legacy	Drive
Plano,	Texas	75024

Ladies	and	Gentlemen:

We	hereby	consent	to	the	use	of	the	name	DeGolyer	and	MacNaughton,	to	references	to	DeGolyer	and	MacNaughton,	to	
the	inclusion	of	our	Letter	Report	dated	January	31,	2013,	regarding	the	proved	reserves	of	Denbury	Resources,	and	to	the	
inclusion	of	information	taken	from	our	“Appraisal	Report	as	of	December	31,	2012	on	Certain	Properties	owned	by	Denbury	
Resources	Inc.	SEC	Case”,	“Appraisal	Report	as	of	December	31,	2011	on	Certain	Properties	owned	by	Denbury	Resources	
Inc.	SEC	Case”,	and	“Appraisal	Report	as	of	December	31,	2010	on	Certain	Properties	owned	by	Denbury	Resources	Inc.	SEC	
Case”,	in	the	Annual	Report	on	Form	10-K	of	Denbury	Resources	Inc.	for	the	year	ended	December	31,	2012.

Very	truly	yours,

/s/	DeGolyer	and	MacNaughton

DeGolyer	and	MacNaughton	
Texas	Registered	Engineering	Firm	F-716

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Exhibit 31(a) 

CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I,	Phil	Rykhoek,	certify	that:

1.	

2.	

	 I	have	reviewed	this	report	on	Form	10-K	of	Denbury	Resources	Inc.	(the	registrant);

	 Based	on	my	knowledge,	this	report	does	not	contain	any	untrue	statement	of	a	material	fact	or	omit	to	state	a	

material	fact	necessary	to	make	the	statements	made,	in	light	of	the	circumstances	under	which	such	statements	
were	made,	not	misleading	with	respect	to	the	period	covered	by	this	report;

3.	

	 Based	on	my	knowledge,	the	financial	statements,	and	other	financial	information	included	in	this	report,	fairly	

present	in	all	material	respects	the	financial	condition,	results	of	operations	and	cash	flows	of	the	registrant	as	of,	
and	for,	the	periods	presented	in	this	report;

4.	

	 The	registrant’s	other	certifying	officers	and	I	are	responsible	for	establishing	and	maintaining	disclosure	controls	

and	procedures	(as	defined	in	Exchange	Act	Rules	13a-15(e)	and	15d-15(e))	and	internal	control	over	financial	
reporting	(as	defined	in	Exchange	Act	Rules	13a-15(f)	and	15d-15(f))	for	the	registrant	and	have:

(a)		 Designed	such	disclosure	controls	and	procedures,	or	caused	such	disclosure	controls	and	procedures	to	be	
designed	under	our	supervision,	to	ensure	that	material	information	relating	to	the	registrant,	including	its	
consolidated	subsidiaries,	is	made	known	to	us	by	others	within	those	entities,	particularly	during	the	period	in	
which	this	report	is	being	prepared;

(b)		 Designed	such	internal	control	over	financial	reporting,	or	caused	such	internal	control	over	financial	reporting	
to	be	designed	under	our	supervision,	to	provide	reasonable	assurance	regarding	the	reliability	of	financial	
reporting	and	the	preparation	of	financial	statements	for	external	purposes	in	accordance	with	generally	
accepted	accounting	principles;

(c)		 Evaluated	the	effectiveness	of	the	registrant’s	disclosure	controls	and	procedures	and	presented	in	this	report	
our	conclusions	about	the	effectiveness	of	the	disclosure	controls	and	procedures,	as	of	the	end	of	the	period	
covered	by	this	report	based	on	such	evaluation;	and

(d)		 Disclosed	in	this	report	any	change	in	the	registrant’s	internal	control	over	financial	reporting	that	occurred	

during	the	registrant’s	most	recent	fiscal	quarter	(the	registrant’s	fourth	fiscal	quarter	in	the	case	of	an	annual	
report)	that	has	materially	affected,	or	is	reasonably	likely	to	materially	affect,	the	registrant’s	internal	
control	over	financial	reporting;	and

5.	

	 The	registrant’s	other	certifying	officers	and	I	have	disclosed,	based	on	our	most	recent	evaluation	of	internal	

control	over	financial	reporting,	to	the	registrant’s	auditors	and	the	audit	committee	of	the	registrant’s	board	of	
directors	(or	persons	performing	the	equivalent	functions):

(a)		 All	significant	deficiencies	and	material	weaknesses	in	the	design	or	operation	of	internal	control	over	financial	

reporting	which	are	reasonably	likely	to	adversely	affect	the	registrant’s	ability	to	record,	process,	summarize	
and	report	financial	information;	and

(b)		

	Any	fraud,	whether	or	not	material,	that	involves	management	or	other	employees	who	have	a	significant	role	
in	the	registrant’s	internal	control	over	financial	reporting.

/s/	Phil	Rykhoek	

February	28,	2013	

Phil	Rykhoek
President	and	Chief	Executive	Officer

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Exhibit 31(b) 

CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 

I,	Mark	C.	Allen,	certify	that:

1.	

2.	

	 I	have	reviewed	this	report	on	Form	10-K	of	Denbury	Resources	Inc.	(the	registrant);

	 Based	on	my	knowledge,	this	report	does	not	contain	any	untrue	statement	of	a	material	fact	or	omit	to	state	a	

material	fact	necessary	to	make	the	statements	made,	in	light	of	the	circumstances	under	which	such	statements	
were	made,	not	misleading	with	respect	to	the	period	covered	by	this	report;

3.	

	 Based	on	my	knowledge,	the	financial	statements,	and	other	financial	information	included	in	this	report,	fairly	

present	in	all	material	respects	the	financial	condition,	results	of	operations	and	cash	flows	of	the	registrant	as	of,	
and	for,	the	periods	presented	in	this	report;

4.	

	 The	registrant’s	other	certifying	officers	and	I	are	responsible	for	establishing	and	maintaining	disclosure	controls	

and	procedures	(as	defined	in	Exchange	Act	Rules	13a-15(e)	and	15d-15(e))	and	internal	control	over	financial	
reporting	(as	defined	in	Exchange	Act	Rules	13a-15(f)	and	15d-15(f))	for	the	registrant	and	have:

(a)		 Designed	such	disclosure	controls	and	procedures,	or	caused	such	disclosure	controls	and	procedures	to	be	
designed	under	our	supervision,	to	ensure	that	material	information	relating	to	the	registrant,	including	its	
consolidated	subsidiaries,	is	made	known	to	us	by	others	within	those	entities,	particularly	during	the	period	in	
which	this	report	is	being	prepared;

(b)		 Designed	such	internal	control	over	financial	reporting,	or	caused	such	internal	control	over	financial	reporting	
to	be	designed	under	our	supervision,	to	provide	reasonable	assurance	regarding	the	reliability	of	financial	
reporting	and	the	preparation	of	financial	statements	for	external	purposes	in	accordance	with	generally	
accepted	accounting	principles;

(c)		 Evaluated	the	effectiveness	of	the	registrant’s	disclosure	controls	and	procedures	and	presented	in	this	report	
our	conclusions	about	the	effectiveness	of	the	disclosure	controls	and	procedures,	as	of	the	end	of	the	period	
covered	by	this	report	based	on	such	evaluation;	and

(d)		 Disclosed	in	this	report	any	change	in	the	registrant’s	internal	control	over	financial	reporting	that	occurred	

during	the	registrant’s	most	recent	fiscal	quarter	(the	registrant’s	fourth	fiscal	quarter	in	the	case	of	an	annual	
report)	that	has	materially	affected,	or	is	reasonably	likely	to	materially	affect,	the	registrant’s	internal	control	
over	financial	reporting;	and

5.	

	 The	registrant’s	other	certifying	officers	and	I	have	disclosed,	based	on	our	most	recent	evaluation	of	internal	

control	over	financial	reporting,	to	the	registrant’s	auditors	and	the	audit	committee	of	the	registrant’s	board	of	
directors	(or	persons	performing	the	equivalent	functions):

(a)		 All	significant	deficiencies	and	material	weaknesses	in	the	design	or	operation	of	internal	control	over	financial	

reporting	which	are	reasonably	likely	to	adversely	affect	the	registrant’s	ability	to	record,	process,	summarize	
and	report	financial	information;	and

	(b)		 Any	fraud,	whether	or	not	material,	that	involves	management	or	other	employees	who	have	a	significant	role	in	

the	registrant’s	internal	control	over	financial	reporting.

s/	Mark	C.	Allen	

February	28,	2013	

Mark	C.	Allen
Senior	Vice	President,	Chief	Financial	Officer,	Treasurer,		
and	Assistant	Secretary

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Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In	connection	with	the	accompanying	Annual	Report	on	Form	10-K	for	the	year	ended	December	31,	2012	(the	Report)	of	

Denbury	Resources	Inc.	(Denbury)	as	filed	with	the	Securities	and	Exchange	Commission,	each	of	the	undersigned,	in	his	
capacity	as	an	officer	of	Denbury,	hereby	certifies	pursuant	to	18	U.S.C.	Section	1350,	as	adopted	pursuant	to	Section	906	of	
the	Sarbanes-Oxley	Act	of	2002,	that	to	his	knowledge:

1.	

	 The	Report	fully	complies	with	the	requirements	of	Section	13(a)	or	15(d)	of	the	Securities	Exchange	Act	of	1934,	as	

amended;	and

2.	

	 The	information	contained	in	the	Report	fairly	presents,	in	all	material	respects,	the	financial	condition	and	results	

of	operations	of	Denbury.

/s/	Phil	Rykhoek	

February	28,	2013	

Phil	Rykhoek
President	and	Chief	Executive	Officer

/s/	Mark	C.	Allen	

February	28,	2013	

Mark	C.	Allen
Senior	Vice	President,	Chief	Financial	Officer,	Treasurer,		
and	Assistant	Secretary

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COrpOraTe InfOrmaTIOn

stock exchange listing

financial Information requests

New York Stock Exchange (“NYSE”) 

For additional information and to receive 

Ticker Symbol: DNR

Corporate Headquarters

Denbury Resources Inc. 

5320 Legacy Drive 

Plano, Texas 75024 

972. 673. 2000 

www.denbury.com

stock Transfer agent & registrar

For questions concerning stock certificates, 

transfer procedures or address changes, 

please contact:

American Stock Transfer and Trust 

Company 

6201 15th Avenue 

Brooklyn, NY 11219 

800. 937. 5449 

Email: info@amstock.com 

www.amstock.com

Investor Inquiries

Phil Rykhoek 

President & Chief Executive Officer 

972. 673. 2000

Mark Allen 

Senior Vice President &  

Chief Financial Officer 

972. 673. 2000

Jack Collins 

Executive Director, Investor Relations 

972. 673. 2028 

Email: jack.collins@denbury.com

additional copies of the Annual Report on 

Form 10-K as filed with the Securities and 

Exchange Commission (“SEC”) or to obtain 

other Denbury public documents, please 

contact: 

Denbury Resources Inc. 

Investor Relations 

5320 Legacy Drive 

Plano, Texas 75024 

972. 673. 2000 

Email: ir@denbury.com 

Our Form 10-K filed with the SEC is 

included herein, excluding all exhibits 

other than our Section 302, 404 and 906 

certifications by the CEO and CFO. We will 

send shareholders our Form 10-K exhibits 

and any of our corporate governance 

documents, without charge, upon request. 

These documents are also available on our 

website at www.denbury.com.

annual meeting

The Annual Meeting of Stockholders will be 
held on Wednesday, May 22, 2013, at 3:00 P.M. 

CDT at The Westin Stonebriar Hotel, 1549 

Legacy Drive, Frisco, Texas 75034. A proxy 

statement and notice of the Annual Meeting 

has been sent to shareholders of record as 

of March 28, 2013.

legal Counsel

Baker & Hostetler LLP

bankers

annual Certifications

J.P. Morgan (Agent)

During 2012, our Chief Financial Officer 

certified to the NYSE that he is not  

aware of any violation by the Company  

of the NYSE’s corporate governance  

listing standards.

auditors

PricewaterhouseCoopers LLP

reserve engineers

DeGolyer and MacNaughton

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Denbury Resources Inc.

5320 Legacy Drive   |   Plano, Texas 75024   |   972.673.2000   |   www.denbury.com