• Access Energy, LLC

• Agrosil Energy, LLC

• Aspect Energy, LLC

• Belize Natural Energy Limited

• Browning Oil Company, Inc.

• Canacol Energy, Ltd.

• Centerra Energy Corporation

• CHx Capital, LLC

• Comet Ridge Limited

• CORE Energy, LLC

• Crown Energy Company

• e2B Business Services

• Earth Energy Reserves, Inc.

• Explorer Investments, LLC

• Family Tree Oil and Gas Corporation

• Green Rock, LLC

• GT Gas, LLC

• Jurasin Oil & Gas, Inc.

• K&G Stores

• LUCA Technologies, LLC

• Manti Resources, Inc.

• Marquez Energy, LLC

• Maurel & Prom

• Meritage Energy Company, LLC

• Meritage Energy Partners, LLC

• Miramar Hydrocarbons Ltd.

• Patriot Resources, LLC

• Rampart Energy Company

• Resource Strategies, LLC

• Sputnick Resources, LC

• Stevens & Tull Development, LLC

• Sunbelt Energy Limited

• The Investment Company

• Tipperary Corporation

• Tiway Oil AS

• Tracker Resource Development, LLC

• Tri-C Resources, Inc.

• Venoco, Inc.

• Walter Oil & Gas