| Aduro Resources Ltd. | AltaCanada Energy Corp. |
| Anderson Energy Ltd. | Andes Petroleum Ecuador Ltd. |
| Angle Energy Inc | Apache Canada Ltd. |
| Arawak Energy Ltd. | ARC Resources Ltd. |
| Arcan Resources Ltd. | Argosy Energy Inc. |
| Artemis Exploration Inc. | Athabasca Oil Sands Corp. |
| Baccalieu Energy Inc. | Barrick Energy Inc. |
| Bellamont Exploration Ltd. | Bellatrix Exploration Ltd. |
| Black Shire Energy | BLZ Energy Ltd. |
| Bolivar Energy Corp. | Bonavista Energy Corporation |
| Bountiful Resources Inc. | Bow Valley Energy Ltd. |
| Bowood Energy Inc. | Bulldog Oil & Gas Inc. |
| Caltex Energy Inc. | Canacol Energy Ltd. |
| Canadian Natural Resources Limited | Canadian Oil Sands Limited |
| Canadian Phoenix Resources Corp. | Canbriam Energy Inc. |
| Cedar Energy Partnership | Cenovus Energy Inc. |
| Central European Petroleum Ltd. | Cequence Energy Ltd. |
| Chinook Energy Inc. | Cinch Energy Corp. |
| Cirrus Energy Corporation | City Of Medicine Hat |
| CNOOC International Ltd. | CNPC International |
| Compton Petroleum Corporation | Connacher Oil and Gas Limited |
| Connaught Oil & Gas Ltd. | ConocoPhillips Canada |
| Contact Exploration Inc. | Corridor Resources Inc. |
| Cougar Energy Inc. | Crescent Point Energy Corp. |
| Crew Energy Inc. | Crocotta Energy Inc. |
| Cutpick Energy Inc. | Daylight Resources Trust |
| Dejour Energy (Alberta) Ltd. | Delphi Energy Corp. |
| Eagle Energy Inc | Echoex Ltd. |
| Encana Corporation | Enerplus Resources Fund |
| ExAlta Energy Inc. | Exoro Energy Inc |
| Fairborne Energy | Focus Energy Trust |
| Franco-Nevada Corporation | Galleon Energy Inc. |
| Gear Energy | Glenogle Energy Inc. |
| Gran Tierra Energy Inc. | Grand Petroleum Inc. |
| Great Plains Exploration Inc. | Greenfields Petroleum Corporation |
| Griffiths Energy International Inc. | Grizzly Oil Sands |
| Grizzly Resources Ltd. | Halfway River First Nations |
| Harvest Operations Corp. | Hawk Exploration Ltd. |
| Huron Energy Corporation | Husky Energy Inc. |
| Insignia Energy Ltd. | InterOil Corporation |
| Ironhorse Oil & Gas Inc. | Ivanhoe Energy Inc. |
| Kereco Energy Ltd. | Ki Exploration Inc. |
| Kinnear Financial Ltd. | Kootenay Energy Inc. |
| Korea Gas Corporation (KOGAS) | Korea National Oil Corporation |
| Laricina Energy Ltd. | Legacy Oil & Gas Inc. |
| Mancal Energy Inc. | Marathon Oil Canada Corporation |
| Maritimes & Northeast Pipeline LP | Maurel et Prom Colombia B.V. |
| MEG Energy Corp. | MegaWest Energy Corp. |
| Midnight Oil Exploration Ltd. | Midway Energy Ltd. |
| Miller Thomson LLP | Mitsubishi Corporation |
| Molopo Energy Canada Ltd. | Monterey Exploration Ltd. |
| Morichal Energy Corp. | Mosaic Energy Ltd. |
| Native American Resource Partners | New Range Resources Ltd. |
| Northern Hunter Energy Inc. | Northpoint Energy Ltd. |
| NuVista Energy Ltd. | ONGC Videsh Ltd. |
| Open Range Energy Corp. | Orion Oil & Gas Corporation |
| OSUM Oil Sands Corp. | Painted Pony Petroleum Ltd. |
| Palliser Oil & Gas Corporation | Pan-China Resources |
| Parex Resources Inc. | Pengrowth Energy Corporation |
| Penn West Petroleum Ltd. | Petro Andina Resources Inc. |
| Petroamerica Oil Corp. | Petrolifera Petroleum Limited |
| Plains Midstream Canada | Plains Midstream Canada |
| Plenty Energy Ltd. | Potash Corporation of Saskatchewan Inc. |
| Power Play Resources Ltd. | Progress Energy Resources Corp. |
| ProspEX Resources Ltd. | Questerre Energy Corporation |
| Reliance Industries Limited | Reviso Energy Ltd. |
| Ripper Oil and Gas Inc. | Rock Energy Inc. |
| Rock Well Petroleum Inc. | Rondo Petroleum Inc. |
| Sabre Energy Ltd. | Saulteau First Nations |
| Scollard Energy Inc. | Second Wave Petroleum Inc. |
| Sedna Oil and Gas Ltd. | Shell Canada Limited |
| Sifton Energy Inc. | Sirius Energy Inc. |
| Skana Exploration Ltd. | Solara Exploration Ltd. |
| Sonde Resources Corp. | Southern Pacific Energy Limited |
| Spitfire Energy Ltd. | SPO Partners |
| Spry Energy Ltd. | Spur Resources Ltd. |
| Statoil Ltd. | Stetson Oil & Gas Ltd. |
| Strategic Oil & Gas Ltd. | Suncor Energy Inc. |
| Sunshine Oil Sands Ltd. | Suroco Energy Inc. |
| Sword Energy Inc. | Talisman Energy Inc. |
| TAQA North Ltd. | Terra Energy Corp. |
| Terrex Energy Inc. | Thunder Energy Trust Inc |
| Tourmaline Oil Corp. | Trafina Energy Ltd. |
| Transgas Limited | Tundra Oil & Gas Limited |
| Tusk Energy Corporation | Unconventional Gas Resources Ltd. |
| Underground Energy Inc. | Valeura Energy Inc. |
| Value Creation Inc. | Venturion Natural Resources Limited |
| Vermilion Energy Trust | Villanova Resources Inc. |
| Waldron Energy Corporation | Wallington Investment Holdings Ltd. |
| West Energy Ltd. | West Moberly First Nations |
| Westfire Energy Ltd. | Whitecap Resources Inc. |
| Winchester Oil & Gas Ltd. | Yacimientos Petroliferos Fiscales Bolivianos |
| YoHo Resources Inc. | |