Alamo Resources Energy XXI Mormaer Exploration
Anadarko Petroleum Corporation Eni US Operating MP Gulf of Mexico
Apache Corporation Eni Mexico Murphy Exploration
Apache Suriname Enron Newfield Exploration
APEX Oil & Gas Enstor Operating Nexen Petroleum
Arena Offshore Enven Energy Noble Energy
Aries Resources EOG Resources ORX Exploration
ATP Oil & Gas Escondido Resources OXY
Badger Oil Corporation EXCO Resources Peles
Basin Exploration Extex Operating Perdido Energy
Bass Enterprises Felice Exploration Peregrine O & G
Bennu O & G Fieldwood Energy Petsec Energy
BEPCO Fire Wheel Energy Pioneer Natural Resources
Beryl Oil & Gas Flex Energy Plains Exploration
Block "T" Foundation Energy Management Planet Operating
BOPCO Freeport-McMoran O & G Range Energy Ventures
Boss E & P Frostwood Energy Renaissance Petroleum
BP Geostock-Sandia Reunion Resources
Breton Energy Gold King Operating Ridgelake Energy
Burlington Resources GOM Shelf Samson Contour Energy
Castex Offshore  Gulf Coast Energy Resources Samson Lone Star
Centurion Exploration Hallwood Petroleum Sanchez O & G
Century Exploration Helix Energy Solutions Group SandRidge Energy
Chesapeake Energy HESS Corporation Services & Consulting International
Chevron Hilcorp Energy Shell Oil
Cheyenne Petroleum Hunt Petroleum Shoreline Southeast
Cimarex Energy Jordan O & G Southwestern Energy
Cinco O & G Kerr-McGee China SPN Resources
Clovelly Oil Company Kerr-McGee O & G St. Mary Land & Exploration
CNG Resources Kitty-Hawk Stone Energy Corporation
ConocoPhillips Kosmos Energy Summit Energy
Cornerstone E&P Lamar O & G Sunnyside Resources
Cox Operating Layline Petroleum Swift Energy Company
CSL Exploration LEED Petroleum Talos Energy
Deep Gulf Energy LLOG Exploration TANA Exploration
Devon Energy Mack Energy Texas Petroleum Investments
Dominion E & P Maersk Oil Toce Operating
Drive Petroleum Manti Operating Tullow Ghana Limited
Dune Operating Mariner Energy Ultra Petroleum
Dunn Exploration Maritech Resources Unit Petroleum
Dynamic Offshore Resources Marlin Coastal US Liquids
Eagle Oil Marquis Resources VENOCO
Edge Petroleum McMoran O & G W & T Operating
EnCana O & G Medco Energy US Whitney O & G
Endeavor Natural Gas Merit Energy Woodside Energy
Energy Partners MidStates Petroleum Company XTO Energy
Energy Resource Technology Moon Hines Tigrett Operating Company Zone Energy

 

 

 

 

 

 

 

 

 

 

 

 
   
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