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o | p | q | r | s | t | u | v | w | x | y | z

A
Addax Petroleum
AGIP
American Coastal Energy
American Exploration Company
Aminex USA, Inc.
Anadarko
Apache Corporation
Apex Oil & Gas
Aquila Energy
ATP Oil & Gas
Areana
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B
BHP Petroleum
Brechtel Energy Corporation
BP
Brass Exploration
Burlington Resources

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C
Cabot
Cairn Energy, USA
Calpine Natural Gas Company
Chateau Oil & Gas
Chatwins Group
Cheniere Energy, Inc.
ChevronTexaco
Clayton Williams Energy, Inc.
Contract Energy
Cypress E&P Corporation

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D
D&C Energy
Dan A. Hughes Company
Davis Petroleum
Delmar Operating
Denbury Resources
Devon Energy

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E
El Paso Production
Encap Investment LC
ENI Petroleum
Energy Partners
ExxonMobil
Equitable Resources
Exceltec, SA

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F
Fairways, Inc.
Flash Oil and Gas Southwest
FMC
Forcenergy
Fortune Petroleum

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G
Global Natural Resources

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H
Hess
Houston Energy and Development
Hunt Oil
Husky Oil

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K
KCS Resources, Inc.
Kerr-McGee
Kinder Morgan
Kuwait Oil

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M
Magnum Hunter
Mariner Energy
McMoran Oil & Gas
Meridian Resources Corporation
Murphy Exploration & Production

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N
Newfield Exploration
Nexen

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P
Pan-Canadian
PDVSA
Petro-Guard Exploration
Petrogulf Company
Phillips Petroleum
Pierce Junction Petroleum

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S
Samedan Oil Corporation
Santos USA Corporation
Shell Oil Company
Spinneker
Sumitomo

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T
Talon Development
TEPPCO

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U
Unocal Oil & Gas Corporation

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V
V&M Tubes
Valence Operating
Valero
Vintage Petroleum

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W
William G. Helis Corporation

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