top 100 Oil and Gas operators.pdf

 

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009

The operator of an oil or gas field is the company responsible for the field’s management and day-to-day operation. Operators in the United States are obligated to submit to EIA EIA annual estimates of proved reserves for each field they operate. operate. In 2009, the largest 100 operators (as determined by total operated reserves) accounted for nearly 90 percent of proved oil and natural gas reserves but less than one percent of all operato operators rs (which numbered over 14,000, based on 1 The top ten accounted for 54 percent of data collected by EIA for the 2009 reporting year). proved oil reserves and 48 percent of proved wet natural gas reserves.   EIA data release policy does not allow company-specific proved reserves estimates, as publishing these volumes could compromise proprietary data. Figure 1 and accompanying Tables 1 and 2 show the cumulative operated proved reserves of the top 100 operators arranged in ten groups of ten in descending volumetric order. For comparison purposes, the Tables also include the owned proved reserves estimates and production data that most of these companies 2 submitted to the Securities and Exchange Commission (SEC). While there is some overlap, it is useful to distinguish between the proved reserves a company operates and those it actually owns. Figure 1. Cumulative Cumulative Prov ed Reserves o f the Top 100 Operators, Operators, 2009 22 20   e    t 18   a   s   n   e    d   ) 16   n   l   s   o   r   e    C   r   e   a 14   s   B   a   e   n   o 12    L   i    l    l    +   i    l    i    B    O   ( 10   e    d   u   r 8    C

275 250

Oil: 20 Billi on Barrels (89% of U.S. Total )

225 200 175

Natural Gas: 252 Tcf  (89% of U.S. Total )

150 125

W  e  t   N  a  t    u r   a l    G  a  s   (   T   c  f    )  

100

Total Operators: Rough ly 14,000 14,000

6 4

75 50

01-10

11-20

21-30

31-40

41-50

51-60

61-70

Operator Opera tor Size Grouping s Source: U.S. Energy Information Administration

71-80

81-90

91-100

 

  For EIA reporting, a company estimates its operated  proved reserves on an individual field basis, including 100 percent of each operated field’s proved reserves; fields in which it has ownership but does not no operate proved are notreserves, included. which For filings withonly the its SEC, the of company (if publicly-traded) estimates itst owned includes share proved reserves; all fields in which it has an ownership are included (cumulatively rather than individually). EIA reporting, therefore, accounts for the entirety of a field’s proved reserves and production productio n, while SEC filings 3 include only those volumes owned by companies required to file with the SEC.   For example, ExxonMobil currently holds an approximate one-third interest in the Prudhoe Bay Field in Alaska, the country’s largest crude oil field. Because it is not the field’s operator, ExxonMobil does not report its proved reserves or production to EIA. For its filing with the SEC, however, the company would include its one-third share of Prudhoe Bay’s total proved reserves 1

  The top 100 operators include both U.S. and foreign companies; their share of total proved reserves is relatively unconcentrated by the standards of many industries. 2  In estimating field-level proved reserves, operators add lease condensate to crude oil (as oil) and plant liquids to natural gas (as “wet” natural gas). 3  The SEC requires companies with more than $10 million in assets whose securities are held by more than 500 owners to file annual and other periodic reports. For 2009, this requirement applied to 60 of the Top 100 operators ranked by liquids proved reserves and 72 of the Top 100 operators ranked by wet gas proved reserves.

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 1

 

and production. Operator BP’s EIA submission, on the o other ther hand, would include all of the field’s proved reserves and production, while its SEC filing would be limited to its ownership share. For EIA and SEC purposes, proved reserves are defined as those volumes of oil and natural gas that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions.

Summary Table: Top Operators Ranked by Proved Reserves

Top 100 U.S. Total % U.S. Total

2009

2008

Oil (million barrels) Operated (EIA) Owned (SEC (SEC))

Oil (million barrels) Operated (EIA) Owned (SEC)

Reserves

Product ion

Reserves

Product ion

Reserves

Product ion

Reserves

Product ion

19,844 22,315 88.9%

1,571 1,929 81.4%

17,168 22,315 76.9%

1,447 1,929 75.0%

18,123 20,554 88.2%

1,469 1,845 79.6%

14,941 20,554 72.7%

1,291 1,845 70.0%

Natural Gas (billion cubic fee feet) t) Operated (EIA) Owned (SEC (SEC))

Top 100 U.S. Total % U.S. Total

Natural Gas (billion cubic fee feet) t) Operated (EIA) Owned (SEC)

Reserves

Product ion

Reserves

Product ion

Reserves

Product ion

Reserves

Product ion

251,694 283,879 88.7%

17,966 22,537 79.7%

163,906 283,879 57.7%

12,582 22,537 55.8%

228,019 255,035 89.4%

17,385 21,415 81.2%

158,588 255,035 62.2%

11,833 21,415 55.3%

Operated: Form EIA-23. Owned: SEC Forms 10-K, 20-F, and 40-F.

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 2

 

Table 1. Top 100 Operators Ranked by 2009 Crude Oil and Lease Condensate Proved Reserves (Million Barrels) Ran k

Operated (EIA) Res er er v ve es Pr o od du uc c ti ti on on

Co mp mp a an n y Nam e  

1 BP PLC PLC

(w)

2 OCCIDENTAL PETROLEUM CORP

 

3 CHEVRON CHEVRON CO CORP RP

 

4 CONOCOPHILLIPS CONOCOPHILLIPS CO

   

5 SHELL SHELL OIL CO 6 AERA ENERGY ENERGY LLC

 

7 ANADARKO ANADARKO PETROLEUM CORP

 

8 APACHE APACHE CORP CORP

 

 

12 CONTINENTAL RESOURC RESOURCES ES INC

237.0

93.7

1,606.0

99.0

(w)

173.5

1,361.0

177.0

(w)

121.7

1,905.0

153.0

(w)

94.9

422.0

71.0

(w)

58.1

-

-

42.7

760.0

63.0

39.9

524.2

34.8

(w) (w)

33.2 7.9

1,616.0 472.4

112.0 16.5

12,051.4 (w)

974.6

11,739.6

963.3

28.9

249.0

26.0

 

13 XTO ENERGY ENERGY INC

3,073.0

(w)  

1-10 Subtotal

11 AMERADA HESS C CORP ORP

309.0

(w)

(w)

 

9 EXXONMOBIL EXXONMOBIL CORP   10 PIONEER NATURAL NATURAL RESOURCES RESOURCES USA INC

Owned (SEC) (SEC) Res er ve ves Pr o od du uc c t io io n

 

(w)

12.8

173.3

10.0

(w)

23.8

387.6

31.7

24.3

279.9

25.7

14 E O G RESOURCES RESOURCES INC

 

(w)

15 C O G OPERATING OPERATING LLC LLC

 

(w)

13.0

142.0

7.3

(w)

15.7

192.9

13.5

16 DENBURY RESOURCE RESOURCES S INC

 

17 SANDRIDGE ENERGY INC

 

18 WHITING PETROLEUM PETROLEUM CORP

 

19 PLAINS EXPLORATION EXPLORATION & PRODUCTION PRODUCTION CO

 

20 MERIT ENERGY ENERGY CO

 

21 NOBLE ENERGY INC

11-20 Subtotal  

22 ENCORE ACQUISITION CO

 

23 CITATION OIL & GAS C CORP ORP 24 NEWFIELD EXPLORATION EXPLORATION CO

 

25 CHESAPEAKE CHESAPEAKE OPERA OPERATING TING INC

 

 

10.2

105.3

2.9

15.9

223.8

15.4

(w)

18.0

214.0

17.6

(w)

14.1

-

-

2,762.2 (w)

176.9

1,967.8

150.1

15.7

209.0

17.0

(w)

10.1

147.1

10.0

(w) (w)

11.0 8.8

137.0

8.0

   

26 MARATHON OIL C CORP ORP

(w) (w)

(w)

15.9

124.0

11.8

(w)

16.8

170.0

23.0 43.0

27 DEVON ENERGY ENERGY CORP

 

(w)

15.0

559.0

28 BERRY PETROLEUM CO

 

(w)

6.4

129.9

7.2

29 ENCANA OIL & GAS GAS INC

 

(w)

5.2

41.2

4.1

30 KINDER MORGAN MORGAN ENERGY PARTNE PARTNERS RS 31 LINN ENERGY ENERGY LLC

   

21-30 Subtotal  

(w)

20.9

86.8

15.7

1,722.0 (w)

125.7

1,604.0

139.8

3.9

156.0

5.7

32 CITY OF LONG BEACH BEACH

 

(w)

9.9

-

-

33 HILCORP ENERGY CO

 

(w)

11.5

-

-

(w)

5.8

108.2

6.5

34 ENERGEN RESOURCE RESOURCES S CORP

 

35 SHERIDAN PRODUCTION C CO O LLC

 

36 EL PASO PASO E ENERGY NERGY

(w)

3.0

-

-

(w)

5.5

61.2

5.5

(w)

8.2

-

-

(w) (w)

36.7 3.5

274.4 -

44.1 -

(w)

13.8

153.0

26.0

1,027.9 (w)

101.8

752.8

87.8

3.1

59.7

2.0

(w)

2.7

55.2

6.4

(w)

0.5

7.3

0.7

(w)

1.0

-

-

 

37 ENDEAVOR ENDEAVOR ENERGY RESOURCES RESOURCES LP

 

38 BHP BILLITON BILLITON   39 RESOLUTE NATURAL NATURAL RESOURCE RESOURCES S CO LLC 40 ENI PETROLEUM PETROLEUM CO INC

 

  31-40 Subtotal

41 ARENA RESOURCES RESOURCES INC

 

 

42 FOREST FOREST OIL CO CORP RP

 

43 PETROBRAS AMERICA INC

 

44 ENERQUEST ENERQUEST OIL & G GAS AS LTD

 

45 CIMAREX ENERGY CO

 

(w)

10.4

58.0

8.5

46 MARINER ENERGY INC

 

(w)

4.4

86.0

6.0

(w)

6.7

53.8

6.3

 

(w)

4.9

52.4

3.3

(w)

0.7

-

-

(w)

4.4

38.8

3.0

682.2

38.7

411.2

36.2  

47 SM ENERGY ENERGY IN INC C 48 A T P OIL & GAS C CORP ORP

 

49 WINDSOR ENERGY GROUP LLC LLC 50 BREITBURN ENERGY ENERGY C CO O LP

    41-50 Subtotal

 

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 3

 

Table 1. Top 100 Operators Operators Ranked by 20 2009 09 C Crude rude Oil and Lease Condensate Proved Rese Reserves rves (M (Milli illi on Barre Barrels) ls) Ran k

Op er at ed (EIA ) Res e err v ve es Pr o od d uc uc ti ti on on

Co m mp pa an n y Nam e

51 SWIFT ENE ENERGY RGY CO

 

(w)

52 STEPHE STEPHENS NS & JOHNSON OPERA OPERATING TING CO 53 MURP MURPHY HY OIL CORP CORP

 

57 VEN VENOCO OCO INC INC

-

-

26.4

6.2

(w)

3.3

-

-

(w)

6.5

47.5

4.2

(w)

1.7

-

-

(w)

3.2

52.0

3.4

(w)

3.4

-

-

(w) (w)

4.0 3.7

37.0 46.6

3.5 3.4

527.3 (w)

45.8

274.0

26.2

3.4

85.7

4.7

(w)

1.7

29.2

1.3

(w)

5.5

-

-

(w)

3.3

29.7

2.7

 

 

59 QUESTA QUESTAR RC CORP ORP 60 NATION NATIONAL AL FUEL GAS 61 RANGE RE RESOURC SOURCES ES CORP

1.7

 

58 BASA RE RESOURC SOURCES ES INC  

   

51-60 Subtotal  

62 ULTRA PE PETROLEU TROLEUM M INC

 

63 WALTER OIL & GAS C CORP ORP

 

64 CALDI CALDIVE VE INTERNATIONAL INTERNATIONAL INC

5.5

12.9

 

56 E&B NATURAL R RESOURCES ESOURCES MGM MGMT T CORP

64.5

(w)  

55 ENERGY X XXI XI GOM LLC

5.5

(w)

 

54 TEXAS PETROLEUM INVESTMENT CO

Ow n ed (SEC) Res er er ve ves Pr o od d uc uc ti ti on on

 

65 DCO DCOR R LL LLC C

 

(w)

3.1

-

-

66 BOP BOPCO CO LP LP

 

(w)

3.3

-

-

(w)

0.8

-

-

(w)

7.6

32.3

6.2

(w)

4.0

25.6

3.0

67 GREKA OIL & GAS

 

68 STONE EN ENERGY ERGY CORP

 

69 ENERPLUS RESOURCES USA CORP

 

70 W & T OFFS OFFSHORE HORE INC INC 71 BRIGH BRIGHAM AM EXPLORATION EXPLORATION CO

   

61-70 Subtotal  

72 ANKOR E ENERGY NERGY LLC LLC

(w)

6.9

34.2

7.2

400.9 (w)

39.5

236.7

25.2

 

1.0

16.6

0.8

(w)

3.6

71.0

8.0

73 TEXL TEXLAND AND PETROLE PETROLEUM UM LP

 

(w)

2.1

-

-

74 FASKE FASKEN N OIL & RANCH LTD

 

(w)

2.2

-

-

75 MACP MACPHERSON HERSON O OIL IL CO

 

76 ENERV ENERVEST EST LTD

 

77 SAMS SAMSON ON RESOUR RESOURCES CES CO

 

78 PETRO HUNT L LLC LC

 

79 LEGACY RESERVES OPERATING OPERATING LP

 

80 LLOG EX EXPLORA PLORATION TION CO 81 HELIS O OIL IL & GAS CO LLC

   

71-80 Subtotal  

82 RAM E ENERGY NERGY INC

-

-

-

(w)

7.1

-

-

(w)

3.1

-

-

(w)

2.1

26.7

2.2

3.8

-

-

29.5

114.3

11.0

2.7

-

-

(w)

1.8

19.1

1.5

(w)

 

85 WAPITI ENE ENERGY RGY LLC

-

2.7

(w)

 

84 ENERG ENERGY Y PARTN PARTNERS ERS LTD

1.9

(w)

276.8 (w)

 

83 PARAL PARALLEL LEL PETROLE PETROLEUM UM CORP

(w)

 

0.6

-

-

(w)

1.8

19.9

2.0

(w)

1.0

-

-

86 TIDELA TIDELANDS NDS OIL PRODU PRODUCTION CTION CO

 

(w)

2.4

-

-

87 SLAWSON EX EXPLORA PLORATION TION CO INC

 

(w)

2.6

-

-

(w)

1.6

-

-

(w)

4.2

-

-

88 JETTA OPE OPERATING RATING C CO O INC

 

89 HUN HUNT T OIL C CO O

 

90 ABRAX ABRAXAS AS PETROLEU PETROLEUM M CORP

   

81-90 Subtotal

91 VESS OIL CORP CORP

 

(w)

0.6

8.8

0.6

223.6 (w)

19.3

47.8

4.1

1.7

-

3.0

92 MCM MCMORAN ORAN OIL & GA GAS S LLC

 

(w)

3.9

15.5

93 YATES PE PETROLEU TROLEUM M CORP

 

(w)

2.3

-

-

(w)

3.5

-

-

94 MARB MARBOB OB ENERGY C CORP ORP

 

95 CRIMSON RESOURCE MANAGEMENT MANAGEMENT CORP

 

96 TEXAS AM AMERICAN ERICAN RESOURCES CO

 

97 E R G RESO RESOURCES URCES LLC LLC

 

(w)

1.2

4.6

0.8

(w)

0.5

-

-

(w)

0.7

-

-

98 KERNS OIL & GAS IINC NC

 

(w)

0.2

-

-

99 MEWBOUR MEWBOURNE NE OIL CO

 

(w)

1.9

-

-

(w)

3.0

-

-

169.2

18.8

20.1

3.7

Top 100 Subtotal

19,843.5

1,570.6

17,168.2

1,447.4

Total U.S.

22,315.0

1,929.0

-

-

100 WOLVERIN WOLVERINE E GAS & OIL CORP

  91-100 Subtotal

 

Operated: Form EIA-23. Ownership : SEC Forms 10-K, 20-F and 40-F. (w) = withheld. Note: Form EIA-23 proved reserves are are the sum of ten companies due to confidentiality. - = N/A.

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 4

 

 

Table 2. Top 100 Operator s Ranked by 200 2009 9 We Wett Natur al Gas Proved Reserves (Billion Cubic Feet) Ran k

Operated (EIA) Res er v ve es Pr o od du uc c ti ti on on

Co m mp pa an n y Nam e  

1 BP PLC PLC 2 CHESAPEAKE CHESAPEAKE OPE OPERATING RATING INC

 

3 XTO ENERG ENERGY Y INC

 

4 ENCANA OIL & GAS GAS INC

   

5 CONOCOPHILLIPS CONOCOPHILLIPS CO 6 DEVON ENERGY CORP

 

7 EXXONMOBIL EXXONMOBIL CORP

 

 

12 THE WILLIAMS COMPANIES INC

835.0

(w)

1,097.3

12,501.7

855.0

(w)

801.6

5,713.0

590.0

(w)

1,208.1

10,742.0

850.0

8,469.0

743.0

11,688.0

566.0

(w)

576.7

6,350.1

422.3

(w) (w)

1,027.9 228.7

7,764.0 3,736.6

817.0 172.2

135,323.4 (w)

8,682.4

95,690.4

6,757.5

337.6

2,525.0

168.7

(w)

547.0

4,255.0

435.0

(w)

425.2

3,650.3

299.7

 

13 SOUTHWESTERN ENERGY ENERGY PRODU PRODUCTION CTION CO

907.0

13,510.0

969.0

  1-10 Subtotal

15,216.0

1,235.1

521.4

 

11 QUESTAR QUESTAR COR CORP P

1,016.6

(w)

(w)  

9 ANADARKO ANADARKO PETROLEUM PETROLEUM CORP 10 ULTRA PETROLEUM PETROLEUM INC

(w)

(w)

 

8 E O G RESOURCES RESOURCES INC

Owned (SEC (SEC)) Res er er ve ves Pr o od du c ctt io io n

 

14 EQUITABLE RESOURCE RESOURCES S INC

 

(w)

138.1

4,056.1

104.3

15 NEWFIELD EXPLORATION EXPLORATION CO

 

(w)

246.1

2,605.0

172.0

16 PETROHAWK OPERATING OPERATING CO

 

(w)

244.1

2,700.0

174.0

(w)

325.0

2,799.0

232.0

(w)

215.9

2,450.1

147.5 243.6

17 OCCIDENTAL PETROLEUM CORP

 

18 PIONEER NATURAL NATURAL RESOURCES RESOURCES USA INC

 

19 APACHE APACHE CORP CORP

 

(w)

355.7

2,440.3

20 SHELL SHELL OIL CO

 

(w)

495.9

2,258.0

399.0

43,189.2 43 (w)

3,330.5

29,738.8

2,375.8

624.1

2,698.0

511.0

(w)

314.4

2,052.0

215.0

(w) (w)

148.6 146.9

680.1 2,614.7

87.5 130.6

(w)

99.7

1,556.0

61.6

(w)

117.2

2,013.2

97.9

21 CHEVRON CHEVRON COR CORP P

11-20 Subtotal  

22 EL PASO PASO ENER ENERGY GY

 

 

23 SANDRIDGE ENERGY INC 24 RANGE RESOURCES RESOURCES CORP

   

25 QUICKSILVER QUICKSILVER RESOURCES RESOURCES INC

 

26 CABOT OIL & GAS CO CORP RP

 

27 HIGHMOUNT HIGHMOUNT EXPLOR & PROD TEXAS LLC LLC 28 NOBLE ENERGY INC

 

 

(w)

117.4

1,521.0

77.0

(w)

192.4

1,534.0

145.0

29 C N X GAS CO LLC

 

(w)

105.4

1,911.4

94.4

30 FOREST FOREST OIL COR CORP P

 

(w)

163.9

1,415.4

116.0

25,092.6 25 (w)

2,029.8

17,995.8

1,536.0

294.4

-

-

(w)

157.9

925.7

118.7

(w)

150.1

1,186.6

118.0

(w)

120.5

897.5

72.3

(w)

36.6

-

-

(w)

28.4

-

-

(w)

87.1

-

-

(w) (w)

70.0 58.5

774.0 1,170.4

45.6 41.0

31 SAMSON RESOURCES RESOURCES CO

21-30 Subtotal  

32 EXCO RESOURCES RESOURCES INC

 

 

33 CIMAREX ENERGY CO

 

34 ENERGEN RESOURCES RESOURCES CORP

 

35 ANTERO RESOURCES RESOURCES CORP

 

36 NFR ENERGY ENERGY LLC

 

37 MERIT ENERGY ENERGY CO

 

38 LINN ENERGY ENERGY LLC 39 DOMINION RESOURCE RESOURCES S INC

 

40 BILL BARRETT CORP

   

31-40 Subtotal

41 CONTINENTAL RESOURCE RESOURCES S INC

 

 

42 MARATHON OIL C CORP ORP

(w)

119.1

918.1

85.5

15,309.8 (w)

1,122.6

5,872.3

481.2

37.0

504.1

21.6

(w)

188.5

820.0

146.0

48.9

776.7

43.3

 

43 PENN VIRGINIA CORP

 

(w)

44 J - W OPERATING OPERATING CO

 

(w)

75.8

-

-

45 HILCORP ENERGY CO

 

(w)

94.9

-

-

(w)

104.0

-

-

(w)

46 ENERVEST ENERVEST L LTD TD

 

47 BERRY PETROLEUM CO

 

38.5

632.2

22.7

48 COMSTOCK RESOURCE RESOURCES S INC

 

(w)

80.0

682.4

60.8

49 CONTANGO OPERATORS INC

 

(w)

72.9

280.6

20.5

50 D T E ENERGY ENERGY CORP

  41-50 Subtotal

 

(w)

31.2

234.0

10,271.7

771.6

3,930.0

5.0 320.0  

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 5

 

Table 2. Top 100 Operators Ranked by 2009 Wet Natural Gas Proved Reserves (Billion Cubic Fee Feet) t) Ran k

Co m p an y Nam e

Op er at ed (EIA ) Res er v es Pr o d u c t i o n

Ow n ed (SEC) Res er v es Pr o d u c t i o n

51 DELTA PETROLEUM PETROLEUM C CORP ORP

(w)

17.5

126.7

17.6

52 MARINER MARINER ENERGY ENERGY INC

(w)

132.5

571.4

90.8

53 BREITBURN BREITBURN ENERGY ENERGY CO LP

(w)

29.5

434.7

21.2

54 LEWIS PETRO PROPERTIE PROPERTIES S INC

(w)

25.3

-

-

55 ENERGY ENERGY CORP OF AMERICA AMERICA

(w)

18.2

-

-

56 CALDIVE CALDIVE INTERNATIONAL INTERNATIONAL INC

(w)

31.0

387.3

27.1

57 C O G OPERATING OPERATING LL LLC C

(w)

36.1

416.9

21.6

58 CARRIZO CARRIZO OIL & GAS INC INC

(w)

43.9

216.2

30.0

59 UNI UNIT T CORP 60 TALISMAN TALISMAN ENERGY INC INC

(w) (w)

64.5 19.1

419.1 566.2

44.1 26.2

7,901.6 (w)

417.6

3,138.5

278.5

76.0

306.0

39.0 -

51-60 Subtotal 61 AMERADA AMERADA HESS CO CORP RP 62 MEWBOURNE MEWBOURNE OIL CO

(w)

61.3

-

63 YATES PETROLEUM PETROLEUM CORP CORP

(w)

123.1

-

-

64 SM ENERGY ENERGY INC INC

(w)

80.3

449.5

71.1

65 WHITING PETROLEUM PETROLEUM CORP CORP

(w)

47.0

307.4

29.3

66 FIDELITY EXPLORATION EXPLORATION & PROD CO

(w)

62.2

448.4

56.6

67 LAREDO LAREDO PETROLEUM PETROLEUM INC

(w)

29.0

-

-

68 G M X RESOURCES RESOURCES IN INC C

(w)

12.8

333.2

12.9

69 GOODRICH GOODRICH PETROLEUM PETROLEUM CORP

(w)

30.5

415.3

28.9

70 ATLAS ENERGY ENERGY IN INC C

(w)

36.2

486.7

35.8

5,218.0 (w)

558.5

2,746.5

273.6

30.4

290.6

21.2

72 KAISER KAISER - FRANCIS OIL CO

(w)

41.6

-

-

73 PLAINS EXPLORATION EXPLORATION & PR PRODUCTION ODUCTION CO

(w)

63.1

873.1

78.2

74 PETROLEUM DEVELOPMENT CORP

(w)

55.4

608.9

35.5

75 VENOCO VENOCO IINC NC

(w)

35.2

278.1

24.7

76 SHERIDAN SHERIDAN PRODU PRODUCTION CTION CO LLC

(w)

13.4

-

-

77 ENDEAVOR ENERGY RESOURCES LP

(w)

30.7

-

-

78 ENCORE ENCORE ACQUISITION ACQUISITION CO

(w)

25.2

439.1

33.9

79 BOPCO BOPCO LP

(w)

37.1

-

-

80 ROSETTA RESOURCE RESOURCES S INC

(w)

48.9

297.0

44.0

3,874.8 (w)

381.0

2,786.8

237.5

4.6

-

-

82 SEDNA ENERGY ENERGY IINC NC

(w)

8.8

-

-

83 PHILLIPS PHILLIPS RESOUR RESOURCES CES INC

(w)

17.7

-

-

84 APPROACH APPROACH RESOUR RESOURCES CES INC

(w)

12.6

168.3

6.3

85 A T P OIL & GAS GAS CORP

(w)

18.5

233.0

12.0

86 RED WILLOW PRODUCTION PRODUCTION CO CO

(w)

52.6

-

-

87 LLOG EXPLORA EXPLORATION TION CO

(w)

64.7

-

-

88 HUNT HUNT OIL CO

(w)

66.5

-

-

89 NEW DOMINION DOMINION L LLC LC

(w)

25.3

-

-

90 WALTER OIL & GAS GAS CORP

(w)

62.8

-

-

3,076.6 (w)

334.0

401.3

18.3

51.5

216.7

41.3

92 ENERGY XXI XXI GOM LLC

(w)

14.2

168.8

17.5

93 AERA ENERGY ENERGY L LLC LC

(w)

16.6

-

-

94 NATIONAL NATIONAL FUEL GAS

(w)

20.3

249.0

22.3

95 BELDEN BELDEN & BLAKE CO CORP RP

(w)

15.4

163.0

12.0

96 ENI PETROLEUM PETROLEUM CO CO INC

(w)

110.7

629.0

155.0

61-70 Subtotal 71 SWIFT ENERGY ENERGY CO CO

71-80 Subtotal 81 GRANITE GRANITE OPERATING OPERATING CO

81-90 Subtotal 91 STONE ENERGY ENERGY CORP CORP

97 MCMORAN MCMORAN OIL & GAS LLC

(w)

61.9

178.8

55.8

98 VALENCE VALENCE OPERA OPERATING TING CO

(w)

37.8

-

-

99 KERNS OIL OIL & GAS INC

(w)

0.9

-

-

(w)

8.1

-

-

100 CAMTERRA CAMTERRA RESOURC RESOURCES ES INC

2,436.8

337.3

1,605.3

304.0

Top 100 Subtotal

91-100 Subtotal

251,694.4

17,965.5

163,905.7

12,582.4

Total U.S.

283,879.0

22,537.0

-

-

Operated: For m EIA-23. Ownershi Ownershi p: SEC For ms 10-K, 20-F and 40-F. (w) = withheld. Note: Form EIA-23 proved reserves are the sum of ten companies due to confidentiality. confidenti ality. - = N/A.

 

Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 6