Établissements Maurel & Prom

A.I.S. Resources Limited
A2D Technologies
Abbot Group plc
Abington Ventures Inc.
Abraxas Energy Partners, L.P.
Abu Dhabi National Oil Company
Action Energy Inc.
Aera Energy LLC
Afren plc
AKITA Drilling Ltd. [AKTAF.PK]
AltaCanada Energy Corp.
American Natural Energy Corporation [ANRUF.PK]
Amerisur Resources PLC
Aminex PLC
Anadarko Algeria Company, LLC
Analytical Surveys, Inc. [ANLT.OB]
Antrim Energy Inc.
Apache North Sea Limited
Apex Resources Group, Inc. [APXR.PK]
Approach Resources Inc. [AREX]
Arcis Corporation
Arena Resources, Inc. [ARD]
Aspen Group Resources Corporation [ASRPF.PK]
Atlas America, Inc. [ATLS]
Atlas Energy Resources, LLC [ATN]
Atlas Pipeline Holdings, L.P. [AHD]
Atwood Oceanics, Inc. [ATW]
Aurado Energy Inc.
Austral Pacific Energy Ltd.
Avalon Oil & Gas, Inc. [AOGN.OB]

Belden & Blake Corporation
BG Group plc [BRGYY.PK]
Big Sky Energy Corporation [BSKO.PK]
Bill Barrett Corporation [BBG]
Birchcliff Energy Ltd.
Black Rock Oil & Gas Plc
Blue Ridge Group, Inc.
Bois d'Arc Energy, Inc. [BDE]
Bolt Technology Corporation
Bonavista Energy Trust
Bow Valley Energy Ltd.
BP (China) Holdings Limited
BP Brasil Ltda
BP Exploration Operating Company Limited
BP NGL
BP Sakhalin
BPI Energy Holdings, Inc. [BPG]
BPZ Energy, Inc. [BZP]
BreitBurn Energy Partners L.P. [BBEP]
Bridge Resources Corp.
Bronco Drilling Company, Inc. [BRNC]
BUE Marine Limited
Buffalo Resources Corp.
Burren Energy plc

C & C Technologies, Inc.
Caddo International, Inc. [CADD.PK]
Cairn Energy PLC
Calfrac Well Services Ltd.
CAMAC International Corporation
Canadex Resources Limited
Canadian Oil Sands Trust [COSWF.PK]
Canadian Superior Energy Inc. [SNG]
Cano Petroleum, Inc. [CFW]
Celtic Exploration Ltd.
Centurion Energy International Inc.
Century Energy Ltd.
CEP International Petroleum Ltd.
Chaparral Energy, Inc.
Cheniere Energy, Inc. [LNG]
Chevron U.K. Ltd
Cheyenne Energy Inc.
China National Petroleum Corporation
China North East Petroleum Holdings, Limited [CNEH.OB]
Chugach Alaska Corporation
CityView Corporation Limited [CTVWF.OB]
CNPC (Hong Kong) Limited [CKKHF.PK]
CNX Gas Corporation [CXG]
Cobra Venture Corporation
Compton Petroleum Corporation [CMZ]
Concho Resources Inc. [CXO]
Connacher Oil and Gas Limited
ConocoPhillips Alaska, Inc.
Consolidated Beacon Resources Ltd.
Constellation Energy Partners LLC [CEP]
Continental Resources, Inc. [CLR]
Corridor Resources Inc.
Crescent Point Energy Trust
Crusader Energy Group Inc. [KRU]
Curlew Lake Resources Inc. [CWLXF.PK]
Cygam Energy Inc.
Cyries Energy Inc.

Dakota Gasification Company
Dana Petroleum plc
Deep Well Oil & Gas, Inc. [DWOG.PK]
Deer Creek Energy Limited
Derek Oil & Gas Corporation [DRKOF.PK]
Desire Petroleum plc
Destiny Resource Services Corp.
Diamond Offshore Drilling, Inc. [DO]
Diaz Resources Ltd.
Dolphin Drilling Ltd.
Doyon, Limited
Dragon Oil PLC
Dune Energy, Inc. [DNE]
Duvernay Oil Corp.

Eden Energy Corp. [EDNE.OB]
Ellora Energy Inc.
Emerald Energy Plc
EnCana Oil & Gas (USA) Inc.
Encore Energy Partners LP [ENP]
EnCore Oil plc
Endev Energy Inc.
Energy Corporation of America
Energy Exploration Technologies Inc. [ENXTF.OB]
EnerJex Resources, Inc. [EJXR.OB]
Enerplus Resources Fund [ERF]
ENSCO International Incorporated [ESV]
Ensign Energy Services Inc. [ESVIF.PK]
Ensign United States Drilling Inc.
Enterra Energy Trust [ENT]
Equus Energy Corporation
Eurogas Corporation
EV Energy Partners, L.P. [EVEP]
Excelsior Energy Limited
EXCO Partners, LP
Exxel Energy Corp.

Fairborne Energy Ltd.
FairWest Energy Corporation
Falcon Oil & Gas Ltd.
Faroe Petroleum plc
First Calgary Petroleums Ltd.
Flagship Energy Inc. [FGSPF.PK]
Flint Hills Resources, LP
Fortress Energy Inc.
Fred. Olsen Energy ASA
Fugro N.V.
FX Energy, Inc. [FXEN]

Galaxy Energy Corporation
Gary-Williams Energy Corporation
Gastar Exploration Ltd. [GST]
GE Oil & Gas
Gemini Energy Corp.
Gentry Resources Ltd.
GEOCAN Energy Inc.
GeoGlobal Resources Inc. [GGR]
GeoMet, Inc. [GMET]
GeoTomo LLC
GGS-Spectrum Limited
Global Energy Development PLC
Global Geophysical Services, Inc.
Grant Geophysical, Inc.
Great Plains Exploration Inc.
Grey Wolf, Inc. [GW]
GSV, Inc. [GSVI.OB]
Guardian Exploration Inc.
Gulf Island Fabrication, Inc. [GIFI]
Gulfside Minerals Ltd.

Habanero Resources Inc.
Hardy Oil and Gas plc
Helmerich & Payne International Drilling Co.
Helmerich & Payne, Inc. [HP]
Hercules Offshore, Inc. [HERO]
Heritage Oil Corporation
Hess Limited
Highpine Oil & Gas Limited
Hiland Holdings GP, LP [HPGP]
Hiland Partners, LP [HLND]
Hilcorp Energy Company
HK Energy Partners LP
Howard Energy Corp.
Hunt Consolidated Inc.
Hunt Oil Company
Husky Energy Inc.
Hyperdynamics Corporation [HDY]

Imperial Energy Corporation PLC
Infinity Energy Resources, Inc. [IFNY.PK]
INPEX Holdings Inc.
Iteration Energy Ltd.
Ivanhoe Energy Inc. [IVAN]

Jacobs Financial Group, Inc. [JFGI.OB]
Japan Petroleum Exploration Co. Ltd.
JED Oil Inc. [JDO]
JKX Oil and Gas plc
Jura Energy Corporation

Kaiser-Francis Oil Company
KCA DEUTAG Drilling Limited
Key Energy Services, Inc. [KEG]
Kodiak Oil & Gas Corp. [KOG]
Kuwait Petroleum Corporation

Legacy Reserves LP [LGCY]
LiteWave Corp. [LTWV.OB]
LongBow Resources Inc.
Lundin Petroleum AB

Mahalo Energy Ltd.
Marathon Oil Company
Marathon Oil UK Ltd.
Mariner Energy, Inc. [ME]
MarkWest Energy Partners, L.P. [MWE]
Marubeni Corporation [MARUY.PK]
Masters Energy Inc.
Matador Resources Company
Matrix Energy Services Corporation
Maverick Minerals Corporation [MVRM.PK]
Melrose Resources plc
Merit Energy Company
Metalore Resources Limited
Midnight Oil Exploration Ltd.
Miller Petroleum, Inc. [MILL.PK]
Montello Resources Ltd.
Mooncor Oil and Gas Corp.
Murphy Exploration & Production Company - International
Murphy Exploration & Production Company - USA
Mustang Fuel Corporation
MV Oil Trust [MVO]

Nabors Drilling USA, LP
Nabors Industries Ltd. [NBR]
Nabors Well Services
NATCO Group Inc. [NTG]
National Iranian Oil Company
National Oil Corporation
Ness Energy International, Inc. [NESS.PK]
New Concept Energy, Inc. [GBR]
Nexen Inc. [NXY]
NGAS Resources, Inc. [NGAS]
Nicklos Drilling Company
Niko Resources Ltd.
Noble Corporation [NE]
Noble Drilling (U.S.) Inc.
North West Oil Group Inc.
NuTech Energy Alliance Corporation
NuVista Energy Ltd.

OAO Gazprom
OAO NOVATEK
OAO Rosneft Oil Company
OAO Tatneft
Occidental Oil and Gas Corporation
Occidental Permian, Ltd.
Oil & Natural Gas Corporation Limited
Oil and Gas Development Company Limited
Oil Search Limited
Oilexco Incorporated
OJSC Surgutneftegas [SGTZY.PK]

Pacific Energy Resources Ltd.
Pacific Rubiales Energy Corp.
Pan Andean Resources PLC
Pangea Petroleum Corporation [PAPO.OB]
Paradigm Geotechnology B.V.
Paradigm Ltd.
Paramount Resources Ltd.
Parker Drilling Company [PKD]
Patterson-UTI Energy, Inc. [PTEN]
Pavilion Energy Resources, Inc. [ENRH.PK]
Peak Energy Services Trust
Pebercan Inc.
Pengrowth Energy Trust [PGH]
Peregrine Energy Ltd.
Perusahaan Pertambangan Minyak Dan Gas Bumi Negara
PETRÓLEO BRASILEIRO S.A. - PETROBRAS [PBR]
Petrel Resources plc
Petro-Hunt, L.L.C.
Petrobank Energy and Resources Ltd.
Petrobras America Inc.
Petroceltic International plc
PetroKazakhstan Inc.
Petroleum Geo-Services ASA [PGSVY.PK]
Petrosearch Energy Corporation [PTSG.OB]
Petsec Energy Ltd [PSJEF.PK]
Peyto Energy Trust
Phoenix Technology Income Fund
Pinnacle Gas Resources, Inc. [PINN]
Pioneer Drilling Company [PDC]
Pioneer Oil and Gas
Pioneer Southwest Energy Partners L.P. [PSE]
Portrush Petroleum Corporation [PRRPF.OB]
Premier Oil plc
Pride International, Inc. [PDE]
Providence Resources, Inc. [PVRS.OB]
Pulse Data Inc.
Pyramid Oil Company

Quest Energy Partners, L.P. [QELP]
Quest Resource Corporation [QRCP]
Questar Market Resources, Inc.
Questerre Energy Corporation
Quicksilver Gas Services LP [KGS]

RAM Energy Resources, Inc.
Ramco Energy plc
Regal Petroleum plc
Rex Energy Corporation [REXX]
Rider Resources Ltd.
Rival Energy Ltd.
Rock Energy Inc.
Rock Energy Resources, Inc. [RCKE.OB]
Rocky Old Man Energy Inc.
Rolland Energy Inc.
Rosemore, Inc.
Rowan Companies, Inc. [RDC]
RPS Energy
RWE-DEA Aktiengesellschaft für Mineraloel und Chemie

Sabretooth Energy Ltd.
Saipem S.p.A.
Sakhalin Energy Investment Company Ltd.
Samson Investment Company
Samson Oil and Gas USA, Inc
SandRidge Energy, Inc. [SD]
Santos Ltd [STOSY]
Saxon Energy Services Inc.
Secunda International Limited
Sefton Resources, Inc. [SFNRF.PK]
Seitel, Inc.
Seneca Resources Corporation
Serica Energy plc
Sharon Energy Ltd.
Shell Canada Limited
Shell Exploration & Production Company
Signa Engineering Corp.
SOCO International plc
Softrock Minerals Ltd.
Sonsub Inc.
Sperry Drilling Services
StatoilHydro ASA [STO]
Sterling Energy plc
Sterling Resources Ltd.
Stetson Oil & Gas Ltd.
Storm Cat Energy Corporation [SCU]
Strata Oil & Gas Inc. [SOIGF.OB]
Stratic Energy Corporation
Stylus Energy Inc.
Sundance Resources, Inc.
Sure Energy Inc.
Surge Global Energy, Inc. [SRGG.OB]
Syncrude Canada Ltd.

TBX Resources, Inc. [TBXC.PK]
Teikoku Oil Co., Ltd.
Tengasco, Inc. [TGC]
Teton Energy Corporation [TEC]
Texalta Petroleum Ltd.
TG World Energy Corp.
TGS-NOPEC Geophysical Company ASA
The Scotia Group, Inc.
THUMS Long Beach Company
Titan Logix Corp.
Torque Energy Inc.
Total Energy Services Trust
TRAFINA Energy Ltd.
TransAtlantic Petroleum Corp.
Transmeridian Exploration, Inc. [TMY]
Transocean Inc. [RIG]
Trek Resources, Inc.
Tri-Valley Corporation [TIV]
Tribute Resources Inc.
Trican Well Service Ltd.
Trident Resources Corp.
Triple 8 Energy Ltd.
TriStar Oil & Gas Ltd.
Trivello Energy Corp. [TRVEF.PK]
True Energy Trust
TrueStar Petroleum Corporation
Tullow Oil plc
Tuscany Energy Ltd.

Union Drilling, Inc. [UDRL]
Unit Corporation [UNT]
United Heritage Corporation
UTS Energy Corporation

Vanguard Natural Resources, LLC [VNR]
Venoco, Inc. [VQ]
Venture Production plc
VTEX Energy, Inc. [VXEN.PK]

W&T Offshore, Inc. [WTI]
West Energy Ltd.
Western Canada Energy Ltd.
Western States International, Inc.
WesternGeco
Whiting Petroleum Corporation [WLL]
Windsor Energy Resources, Inc.
Winstar Resources, Ltd.
Wintershall Holding AG
Woodside Petroleum Ltd. [WOPEY.PK]

Yangarra Resources Ltd.
Yoho Resources Inc.

Zapata Energy Corporation