Royal Dutch Shell
Global oil and gas corp
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Member
Schlumberger N.V.
The world's largest oil services company
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Member
Plains All American Pipeline, L.P.
Engages in the transportation, storage, terminalling, and marketing of crude oil, natural gas liquids, natural gas and refined products. Revenues are $33 billion
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Member
Pioneer Natural Resources Company
Company created by merger of Mesa, Inc. and Parker & Parsley Petroleum Company
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Member
Occidental Petroleum Corporation
NYSE: OXY California-based oil and gas exploration and production company
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Member
Halliburton Company
parent organization
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Member
ExxonMobil
Oil and gas exploration, production, and marketing
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Member
EOG Resources
Formerly Enron; produces crude oil and natural gas. Revenues are $16 billion.
Endeavor Energy
Permian basin oil driller
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Member
