Gas Production for OCS Operators in CY 2006 - Ranked by Volume (The volumes here are subject to change as additional production reports are processed) OCS Pacific OCS Alaska OCS TOTAL OCS Natural Gas Casinghead Natural Casinghead Natural Casinghead OPERATOR Rank Gas Gas Gas Gas Gas (mcf) (mcf) (mcf) (mcf) (mcf) (mcf) (mcf)

1 Shell Offshore Inc. 188,505,018 181,319,506 369,824,524 2 Chevron U.S.A. Inc. 177,525,875 57,755,858 235,281,733 3 Kerr-McGee Oil & Gas Corporation 148,907,524 70,205,226 219,112,750 4 Apache Corporation 161,837,488 22,739,613 184,577,101 5 Exxon Mobil Corporation 125,637,461 17,857,017 0 33,189,450 0 0 176,683,928 6 BP Exploration & Production Inc. 81,806,055 89,027,613 170,833,668 7 Newfield Exploration Company 95,305,826 2,568,322 97,874,148 8 Dominion Exploration & Production, Inc 81,514,387 13,323,833 94,838,220 9 Union Oil Company of California 63,186,059 1,494,725 64,680,784 10 Energy Partners, Ltd. 50,159,807 1,291,120 51,450,927

Subtotal 1,174,385,500 457,582,833 0 33,189,450 0 0 1,665,157,783

11 Walter Oil & Gas Corporation 45,242,496 3,115,388 48,357,884 12 Noble Energy, Inc. 35,591,474 12,134,601 47,726,075 13 W & T Offshore, Inc. 41,937,859 4,261,894 46,199,753 14 LLOG Exploration Offshore, Inc. 45,599,443 0 45,599,443 15 Mariner Energy, Inc. 36,138,488 1,430,903 37,569,391 16 31,500,955 3,992,355 35,493,310 17 Stone Energy Corporation 30,929,772 3,901,468 34,831,240 18 GOM Shelf LLC 33,117,292 897,011 34,014,303 19 ATP Oil & Gas Corporation 26,365,698 7,388,452 33,754,150

Devon Energy Production Company, L.P. 20 33,637,880 23,784 33,661,664

Subtotal 360,061,357 37,145,856 0 0 0 0 397,207,213

21 Mariner Gulf of Mexico LLC 33,438,493 161,021 33,599,514 22 Bois d'Arc Offshore Ltd. 31,032,958 1,435,534 32,468,492 MOBIL OIL EXPLORATION & 23 PRODUCING SOUTHEAST INC 30,183,285 2,002,641 32,185,926 24 ConocoPhillips Company 1,649,609 29,745,752 31,395,361 25 Remington Oil and Gas Corporation 28,531,959 2,202,908 30,734,867 26 Eni Co. Inc. 9,272,336 17,652,588 26,924,924 27 Merit Energy Company 22,138,093 4,177,564 26,315,657 28 Marubeni Oil & Gas (USA) Inc. 26,194,235 0 26,194,235 29 Nexen Petroleum U.S.A. Inc. 22,117,357 3,860,495 25,977,852 30 Gryphon Exploration Company 25,762,982 16,226 25,779,208

Subtotal 230,321,307 61,254,729 0 0 0 0 291,576,036

31 BHP Billiton Petroleum (Americas) Inc 25,276,013 0 25,276,013 32 Forest Oil Corporation 24,322,174 445,381 24,767,555 33 TOTAL E&P USA, INC. 21,002,246 1,967,581 22,969,827 34 Energy Resource Technology, Inc. 18,673,612 3,046,951 21,720,563 35 Arena Offshore, LLC 19,163,275 2,089,929 21,253,204 36 Helis Oil & Gas Company, L.L.C. 21,110,431 0 21,110,431 37 Hunt Petroleum (AEC), Inc. 18,822,085 1,318,876 20,140,961 38 Shell Gulf of Mexico Inc. 415,502 18,627,782 19,043,284 39 Tana Exploration Company LLC 18,634,668 244,985 18,879,653 40 Pioneer Natural Resources USA, Inc. 16,931,176 1,449,428 18,380,604

Subtotal 184,351,182 29,190,913 0 0 0 0 213,542,095

41 El Paso Production GOM Inc. 16,585,120 116,181 16,701,301 El Paso Exploration & Production 42 Management 15,556,282 306,467 15,862,749 Gulf of Mexico OCS Pacific OCS Alaska OCS TOTAL OCS Natural Gas Casinghead Natural Casinghead Natural Casinghead OPERATOR Rank Gas Gas Gas Gas Gas (mcf) (mcf) (mcf) (mcf) (mcf) (mcf) (mcf) Murphy Exploration & Production 43 Company 773,629 14,950,540 15,724,169 44 El Paso Production Company 15,441,003 0 15,441,003

Tarpon Operating & Development, L.L.C 45 12,857,248 1,089,484 13,946,732 46 Seneca Resources Corporation 13,115,487 384,405 13,499,892 47 The Exploration Company 10,517,002 2,263,055 12,780,057 48 Nippon Oil Exploration U.S.A. Limited 12,183,374 526,184 12,709,558 49 Petsec Energy Inc. 12,531,971 0 12,531,971 50 Hunt Oil Company 12,400,482 0 12,400,482

Subtotal 121,961,598 19,636,316 0 0 0 0 141,597,914

Century Exploration New Orleans, Inc. 51 11,996,437 268,278 12,264,715 52 Pogo Producing Company 7,669,784 4,379,982 12,049,766 53 EOG Resources, Inc. 11,856,679 0 11,856,679 54 SPN Resources, LLC 7,359,918 4,096,133 11,456,051 55 El Paso E&P Company, L.P. 10,176,373 468,707 10,645,080 56 Callon Petroleum Operating Company 10,227,235 0 10,227,235 57 Maritech Resources, Inc. 9,091,831 1,034,983 10,126,814 58 BP America Production Company 7,161,833 2,951,346 10,113,179 59 Apex Oil & Gas, Inc. 9,785,671 0 9,785,671 60 Offshore Shelf LLC 7,935,354 1,444,682 9,380,036

Subtotal 93,261,115 14,644,111 0 0 0 0 107,905,226

61 Prime Offshore L.L.C. 8,846,903 0 8,846,903 62 Marathon Oil Company 2,142,514 6,168,444 8,310,958 63 Taylor Energy Company LLC 5,757,500 2,553,096 8,310,596 64 PetroQuest Energy, L.L.C. 6,913,937 411,180 7,325,117 65 Anadarko Petroleum Corporation 0 6,890,134 6,890,134 66 Taylor Energy Company 5,560,749 1,292,337 6,853,086 67 Arguello Inc. 0 0 0 6176993 0 0 6,176,993 68 Magnum Hunter Production, Inc. 5,944,571 0 5,944,571 69 Energy XXI GOM, LLC 1,391,689 3,777,208 5,168,897 70 McMoRan Oil & Gas LLC 4,832,055 211,320 5,043,375

Subtotal 41,389,918 21,303,719 0 6,176,993 0 0 68,870,630

71 Medco Energi US LLC 4,589,892 285,654 4,875,546 72 Beryl Oil and Gas LP 4,325,096 226,672 4,551,768 73 East Cameron Partners, LP 4,302,569 0 4,302,569

LLOG Exploration & Production Company 74 4,272,130 0 4,272,130 75 Offshore Energy II LLC 4,248,222 0 4,248,222 76 DCOR, L.L.C. 0 0 1190793 2703167 0 0 3,893,960 77 Northstar GOM, LLC 3,401,151 215,786 3,616,937 78 Gulf of Mexico Oil and Gas Properties 2,829,564 736,032 3,565,596 79 Sojitz Energy Venture, Inc. 2,729,179 0 2,729,179 80 Fairways Offshore Exploration, Inc. 2,686,515 0 2,686,515

Subtotal 33,384,318 1,464,144 1,190,793 2,703,167 0 0 38,742,422

81 Virgin Offshore U.S.A., Inc. 2,683,921 0 2,683,921 82 Badger Oil Corporation 2,479,340 0 2,479,340 83 Devon Louisiana Corporation 657,517 1,798,548 2,456,065 84 Linder Oil Company, A Partnership 2,290,634 0 2,290,634 85 Vintage Petroleum, Inc. 2,280,623 0 2,280,623 86 AMCO Energy, Inc. 1,797,734 0 1,797,734 87 Ridgelake Energy, Inc. 1,781,246 0 1,781,246 Gulf of Mexico OCS Pacific OCS Alaska OCS TOTAL OCS Natural Gas Casinghead Natural Casinghead Natural Casinghead OPERATOR Rank Gas Gas Gas Gas Gas (mcf) (mcf) (mcf) (mcf) (mcf) (mcf) (mcf) Plains Exploration and Production 88 Company 0 0 0 1714071 0 0 1,714,071 89 TDC Energy LLC 1,587,756 7,111 1,594,867 90 Veneco, Inc. 0 0 742625 833685 0 0 1,576,310

Subtotal 15,558,771 1,805,659 742,625 2,547,756 0 0 20,654,811

91 Rosetta Resources Offshore, LLC 1,475,515 0 1,475,515 92 Anglo-Suisse Offshore Partners, LLC 58,050 1,341,888 1,399,938 93 Louis Dreyfus Natural Gas Corp. 1,386,982 0 1,386,982 94 Manti Operating Company 1,290,420 0 1,290,420 95 Petro Ventures, Inc. 1,284,208 0 1,284,208 Anglo-Suisse Texas Offshore Partners, 96 LLC 1,196,043 0 1,196,043 97 Palace Operating Company 1,143,069 0 1,143,069 98 PXP Gulf Coast Inc. 1,067,395 0 1,067,395 99 Marlin Coastal, L.L.C. 965,437 4,955 970,392 100 Peregrine Oil & Gas, LP 895,791 0 895,791

Subtotal 10,762,910 1,346,843 0 0 0 0 12,109,753

101 Legacy Resources Co., L.P. 884,884 0 884,884 102 Samson Contour Energy E&P, LLC 884,297 0 884,297 103 Sterling Energy, Inc. 822,563 0 822,563 104 Burlington Resources Offshore Inc. 790,607 0 790,607 105 Monforte Exploration L.L.C. 759,547 0 759,547 106 PANACO, INC. 349,037 373,120 722,157 107 Mission Resources Corporation 696,448 0 696,448 108 Conn Energy, Inc. 671,219 0 671,219

Flextrend Development Company, L.L.C. 109 369,608 267,947 637,555 The Louisiana Land and Exploration 110 Company 463,831 0 463,831

Subtotal 6,692,041 641,067 0 0 0 0 7,333,108

111 Petrohawk Energy Corporation 418,201 0 418,201 112 Pacific Operators Offshore, LLC 0 0 0 418145 0 418,145 113 Explore Enterprises of Louisiana LLC 370,976 0 370,976 114 NCX Company, L.L.C. 0 367,479 367,479 115 J. M. Huber Corporation 324,127 0 324,127 116 MCX Gulf of Mexico, LLC 0 295,100 295,100 117 Calpine Natural Gas Company 223,795 0 223,795 118 Tarpon Offshore Ventures, LP 204,214 0 204,214 119 Aera Energy LLC 0 0 0 184936 0 184,936 120 Freeport-McMoRan Energy LLC 0 139,547 139,547

Subtotal 1,541,313 802,126 0 603,081 0 0 2,946,520

121 HC Resources, LLC 69,798 0 69,798 122 St. Mary Energy Company 0 60,811 60,811 123 Millennium Offshore Group, Inc. 47,486 0 47,486 124 Offshore Energy I LLC 0 26,674 26,674 125 Prime Natural Resources, Inc. 23,252 0 23,252 126 Signal Oil & Gas Company 78 0 78

Subtotal 140,614 87,485 0 0 0 0 228,099

TOTAL 2,273,811,944 646,905,801 1,933,418 45,220,447 0 0 2,967,871,610