| Lamamco Drilling Co. |
Oklahoma Oil Properties |
| St. Mary Land & Exploration |
Various Properties |
| ExL Petroleum |
Wolfberry Trend, Upton, Midland and Ector Counties, Texas |
| Fairplay Midstream, L.P. |
Oak Hill Gathering System, Rusk, Panola and Harrison Counties, East Texas |
| Undisclosed Sellers |
Fayetteville Shale, Arkansas |
| Tamarack Petroleum Company, Inc. |
Spraberry Trend, Permian Basin, Texas |
| Winn Exploration Co., Inc. |
DeWitt and Jefferson Counties, Texas |
| Camterra Resources Partners Ltd., et al |
Elm Grove Field, North Louisiana |
| Stone Energy |
Offshore Gulf of Mexico |
| Toreador Resources Corporation |
Various Properties |
| Encore Acquisition Company |
Anadarko & Western Oklahoma, Verden Field, Newark
East Field, and Arkoma Basin |
| Layton Enterprises, Inc. |
New Mexico and West Texas |
| RBE, L.L.C. |
Barnett Shale, Wise County, Texas |
| Five States Energy Company |
Permian Basin, North Texas |
| Orion Energy Resources |
Arkoma Basin Properties |
| Five States Energy Company |
Mid-Continent, East Texas/North Louisiana, Gulf Coast |
| Longhorn Properties, LLC |
Barnett Shale Royalty Interests |
| Kestrel (PCI Drilling, L.P.) |
Cotton Valley, Rusk and Panola Counties, East Texas |
| Tensas Delta Exploration Company |
Carthage Field, Cotton Valley and Travis Peak Production |
| Dan A. Hughes Company |
Caliente Field, Karnes County, Texas |
| Tsar Energy II, LLC |
Corporate Sale Illinois Basin |
| Dale Resources, L.L.C. |
Barnett Shale, Tarrant County, Texas |
| JTD Resources, Inc. |
House Field, Lea County, New Mexico |
| Rio Petroleum, Inc. |
Bitterweed, Algerita & Pinon Fields, Pecos County,
West Texas |
| Carneros Energy, Inc. |
Kern County, California, San Joaquin Valley |
MBR Resources, Inc.,
Summit Exploration, L.L.C. and
Red River Production,
L.L.C. |
Texas, Oklahoma, New Mexico, Kansas |
Nielson & Associates, Inc. and
Nucor Oil & Gas , Inc. |
McCallum Field, Jackson County, Colorado |
| Compass Oil & Gas, L.P. |
Jameson Field, Coke County, Texas |
| Tensas Delta Exploration Company |
Elm Grove Field, Louisiana |
| Fairplay Midstream , L.P. |
Oak Hill Gathering System, East Texas |
| Winwell Resources, Inc. and Nemours Energy |
Elm Grove & Caspians Fields, Bossier, Caddo & DeSoto
Parishes, LA |
| Mize Family, L.P. |
Johnson County, TX, Barnett Shale Royalty Interests |
| Kaiser-Francis Oil Company |
Various Fields: ND, MN, CO, UT, NM, IL, OH |
| White Eagle Resources Corp. |
Central Kansas Properties |
| Longhorn Properties, L.L.C. |
Johnson County, Texas, Barnett Shale, Working Interest |
| Dale Operating Company |
Overton Field, Cherokee County, Texas |
| Sooner Exploration (SEDCO) |
Oklahoma Properties |
| Valence Operating Company |
Oklahoma Properties |
| Continental Resources, Inc. |
Lustre Field, Valley & Roosevelt Counties, MT |
| Dale Operating Company |
Oak Hill & Blocker Fields, TX |
| Undisclosed Sellers |
Emery County, UT |
| Thorp Petroleum Corporation |
Samano & Bloomberg Fields, Starr and Hidalgo Counties,
TX |
| Virtex Petroleum Company, Inc. |
North Gold River Field, Olmos Trend, Webb County, TX |
| Hallwood Energy Corporation |
Barnett Shale, Johnson County, TX |
| Pine Mountain Oil and Gas, Inc. |
Virginia Coalbed Methane |
| Dale Operating Company |
Overton Field, Smith County, TX |
| GeoMet Operating Company, Inc. |
CBM, Black Warrior Basin, White Oak Creek Field |
| Kaiser-Francis Oil Company |
DJ Basin, Wattenberg Field |
| Newfield Exploration Mid-Continent Inc. |
Oklahoma, Kansas |
| CamWest Limited Partnership |
Lander & Winkleman Dome Fields, Fremont County, WY |
| Nexen Oil & Gas USA |
Williston Basin, Flat Lake Field |
| TECO Coalbed Methane |
Black Warrior Basin, Alabama |
| Southwestern Production Corp. |
Wattenberg Field, Weld County, CO |
| Southwestern Energy Production Co. |
Sooner Trend/Anadarko Basin, Sho-Vel-Tum, OK |
| Niagara Oil Company, L.P. |
Illinois Basin |
| EnCana (Pancanadian Energy) |
Anadarko Basin |
| Westport Oil & Gas |
Rockies, Texas, Mid-Continent |
| Tri-Union Development Corporation |
Lousiana |
| Westchester Gas Company |
E. TX and N. LA, Producing Properties and Midstream Assets |
| Phoenix Energy, Inc. |
Uinta Basin, Utah |
| FMI Weld LLC |
Wattenberg Field, Colorado |
| Choctaw Corporation |
Northern Rocky Mountain Region |
| Prime Natural Resources, Inc. |
Gulf of Mexico, Federal Waters |
| Petro-Guard Company, Inc. |
Grass Island Field, Espiritu Santo Bay, Texas |
| Chilton Energy |
Greta Field, Refugio County, Texas |
| 3TEC Energy Corporation |
Oklahoma and Kansas |
| 3TEC Energy Corporation |
Texas and New Mexico |
| Aries Resources, L.L.C. |
Oklahoma |
| Aries Resources, L.L.C. |
Michigan |
| Bluegrass Energy, Inc. |
Oklahoma, Texas Panhandle |
JN Resources, Inc. and
The William G. Helis Company, L.L.C.
(2000/2001 Sale)
|
Rockies, Mid-Continent, Gulf Coast, Federal Offshore, Michigan Basin,
Permian Basin |
