Member Operators

ANGLO-SUISSE OFFSHORE PARTNERS, LLC
ATLAS ENERGY, L.P.
BENNU OIL & GAS, LLC
(FORMERLY ATP OIL & GAS)
BHP BILLITON
BOIS D’ARC
BP LUBRICANTS
BP NORTH AMERICAN GAS
CARRIZO OIL & GAS
COBALT INTERNATIONAL ENERGY, INC.
CONTANGO
CONTINENTAL RESOURCES
CRESTWOOD MIDSTREAM PARTNERS LP
DEEP GULF ENERGY L.P.
DYNAMIC OFFSHORE RESOURCES, LLC
EPL OIL & GAS, INC.
EXXONMOBIL DEVELOPMENT COMPANY – DRILLING
EXXONMOBIL USP
FAIRWAYS OFFSHORE EXPLORATION, INC.
GULF COAST ENERGY RESOURCES
HELIS OIL & GAS COMPANY, L.L.C.
HIGHMOUNT EXPLORATION & PRODUCTION
KNIGHT RESOURCES, LLC
LINDER OIL COMPANY, A PARTNERSHIP
MARATHON PETROLEUM COMPANY LP
MARLIN ENERGY
MARUBENI OIL & GAS (USA) INC.
MC OFFSHORE PETROLEUM, L.L.C.
MD AMERICA ENERGY
MEDCO ENERGI US LLC
MILLER COORS
MOSBACHER ENERGY
NOBLE DRILLING
OASIS PETROLEUM LLC
PETROBRAS AMERICA, INC.
QEP Resources, Inc.
RESOLUTE ENERGY CORPORATION
RIDGELAKE ENERGY, INC.
ST. PAUL PARK REFINING CO., LLC
TAMMANY OIL & GAS, LLC
TANA EXPLORATION
TETRA TECHNOLOGIES INC-CORP
VIRGIN OFFSHORE USA, INC
WHISTLER ENERGY II
ZEPHYR GAS SERVICE