1st NRG Corp
3 Martini Ventures, Inc
3P International Energy Corp.
49 North Resources Inc.
4Sea Energy AS
7 Eleven Australia
A & Hatman Ltd
A Brown Company, Inc
Abbot Group (IFRS)
Abbot Group (UK GAAP)
Abbot Group (UK+IFRS)
Abraxas Petroleum Corporation
ACC International Holdings
AccelRate Power Systems
ACON Investments LLC
ACR Angola Exploration & Production Company
Adams Resources & Energy Inc
Adani Welspun Exploration Ltd
Addax Petroleum
Adelaide Energy Limited
Adelphi Energy Ltd
Aden Refinery Company
Adexco Operating Company
Adino Energy
Adira Energy
Admiral Bay Resources
ADNOC
Adroit Resources Inc.
Aduro Resources
Advantage Energy Income Fund
Advantage Oil & Gas Ltd
Adventure Exploration Partners, LLC
ADX Energy Ltd
AED Oil Limited
Aegean Energy S.A.
Aegean Marine Petroleum Network Inc
Aegis Logistics Ltd
AES Corporation
Afex Global
Afren
Africa Oil and Gas Corporation
Africa Oil Corp
African Petroleum Corporation
AGE Refining Inc
AGEMO Comercial e Industrial
AGL Energy Ltd
Agora Oil & Gas
Agriterra Limited
Agrotech Greenhouses Inc.
AIC-Petrofi Ltd
Aimwell Energy Ltd
AJ Lucas Group Ltd
Aker ASA
Aker Exploration
Al Thani Petroleum
Alamo Energy Corp
Alamo Resources II, LLC
Alamo Resources LLC
Alange Energy Corp
Alaskan Energy Alliance Inc
Alaskan New Energy LLC
Alberta Clipper Energy
Alberta Energy
Alberta Oilsands Inc
Alberta Star Development Corp.
Ale Combustíveis S/A
Alimentation Couche-Tard Inc
Alkane Energy Ltd
All State Properties Holdings, Inc
Alliance Oil Company
Alliance Success Holding
Alon USA Energy
Alper Oil
Alrosa Co. Ltd
Alston Ventures Inc.
Alta Mesa Holdings, LP
AltaCanada Energy Corporation
AltaEast Production Limited Partnership
Alternate Energy Corp
Altima Resources Ltd
Alvorada Petroleo
Amber Petroleum
Amen Properties
American Eagle Energy, Inc
American Energy Group
American Energy Production Inc.
American Exploration Corp
American International Industries, Inc.
American Natural Energy Corporation
American Oil & Gas Inc
American Petro-Hunter
American Refining Group, Inc
American Resource Technologies, Inc
Americas Energy Company
Americas Petrogas Inc
Amerisur Resources
AMG Oil Ltd
Aminex Plc
Amoco
Ampal-American Israel Corporation
AMPCO
Amromco Energy
Ana Texas Offshore Inc
Anadarko Petroleum
ANCAP
Anderson Energy
Anderson Exploration
Andhra Pradesh Industrial Infrastructure Corp Ltd
Angle Energy
Anglo American
Anglo Canadian Oil Corp.
Angus Energy Ltd
Antares Energy Ltd
Antares Exploration Fund LP
Antero Resources Corporation
Anterra Energy Inc
Antrim Energy Inc.
Anzon Energy
Apache Corp.
Apco Oil and Gas International Inc
Apex Oil & Gas, Inc
Apico LLC
Apollo Exploration LLC
Apollo Global Management, LLC
Approach Resources Inc
Arabian Oil Company
Aragon Energy AG
Arawak Energy Corporation
ARC Energy Trust
Arc Terminals LP
Arcadia Petroleum Ltd
Arcan Resources Ltd.
Archer Petroleum Corp
ArcLight Capital Partners, LLC
Arclima Engenharia Ltda
Arco
Ardent Resources Canada Limited
Arena Energy
Arena Resources
Arete Industries, Inc
Argonaut Private Equity
Argosy Energy Inc
Armstrong Cook Inlet LLC
Arnela Capital
ArPetrol
Arrington Oil & Gas Inc
Arrow Energy
Arsenal Energy Inc.
Artek Exploration Ltd
Artumas Group
Ascent Exploration, Inc.
Ascent Resources
Ashmore Investment Management
AsiaStar Petroleum Limited
Aspect Energy International
Aspen Group Resources Corp.
Assam Company Ltd
Aston Hill Financial
Athabasca Oil Sands
Athabaska Energy Ltd.
Atikwa Resources Inc.
Atinum Group
Atlantic LNG
Atlantic Petroleum
Atlas Energy Inc
Atlas Energy Resources
Atlas Gas & Oil Company LLC
Atlas Oil Company
Atlas Petroleum International
ATP Oil & Gas Corp.
Aurizônia Empreendimentos
AusTex Oil Ltd
Austral Pacific Energy Ltd.
Australian Drilling Associates Pty Ltd
Avalon Oil & Gas
Avenir Diversified Income Trust
Avere Energy Inc.
Avro Energy, Inc
AWE Limited
AXEA Capital Corp
Ayr Logistics Limited
Azabache Energy
Azerneftyag Oil Refinery
Babcock & Brown
Badak LNG
Badger Oil Corporation
Bahrain Petroleum Company
Bald Eagle Energy
Baltic Oil Terminals PLC
Bankers Petroleum Ltd
Baraka Petroleum Limited
Baron Energy, Inc
Barrett Resources Corp.
Barrow-Shaver Resources Company
Base Oil and Gas Ltd
Baseline Oil & Gas
Bashkortostan Oil
Bashneft
Basin Exploration
Bayerngas Norge
BayHill Capital Corporation
Bayou Bend Petroleum Ltd
Bayside Petroleum Company, Inc
Baytex Energy Trust
Beach Energy
Belco Oil & Gas
Bellamont Exploration Ltd
Benaris International Pty Ltd
Benchmark Energy
Bengal Energy
Bering Exploration Inc
Berry Petroleum Co.
Beryl Oil And Gas Gp Llc
BG Group
BG Group (UK GAAP)
Bharat Petroleum
BHP
BHP Billiton
BHP Billiton (A$)
BHP Billiton (UK GAAP)
Bill Barrett Corporation
Birch Lake Capital Inc.
Birchcliff Energy
Black Dragon Resource Companies, Inc
Black Elk Energy, LLC
Black Gold Energy LLC
Black Hills Corp
Black Marlin Energy Limited
Black Stone Minerals
Blackbird Energy Inc
Blackbird Petroleum Corporation
Blackdog Resources Ltd
Blackhawk Resource Corp
Blackland Park Exploration Ltd
BlackPearl Resources Inc.
Blacksands Petroleum Inc
Blacksteel Energy Inc.
Blackwater Midstream Corporation
Blast Energy Services, Inc
Blaze Asset Pty Ltd
Blue Parrot Energy
Blue Stone Oil & Gas, LLC
Blueknight Energy Partners, L.P.
BlueStone Natural Resources
Blugrass Energy Inc
BNK Petroleum Inc
BNP Resources Inc
Bois D'Arc Energy LLC
Bois D'Arc Exploration LLC
Bombora Energy
Bonanza Oil & Gas Inc
Bonavista Energy Trust
Bontan Corporation Inc
Bonterra Oil & Gas Ltd
Border Petroleum
Borders & Southern Petroleum Plc
Botas
Bounty Oil and Gas
Bow Valley Energy Ltd.
Bowleven Plc
Bowood Energy Inc
BP
BP (Hess)
BP (pre Amoco)
BP (UK GAAP)
BP (US$ Reported pre Amoco)
BPZ Energy
Braskem SA
Brasoil
Brazos International Exploration, Inc.
Breaking Point Developments Inc
Breitburn Energy Partners
Breitling Oil and Gas Corporation
Breton Energy, LLC
Bridge Energy AS
Bridge Resources Corp
Brigadier Energy, Inc
Brigham Exploration Company
British Borneo
Brownstone Ventures Inc.
Buccaneer Energy
Buckeye Partners L.P.
Bucking Horse Energy Inc.
Buffalo Resources Corp.
Burlington Resources Inc.
Burmah Castrol
Burnett Oil Company
Buru Energy Limited
Byco Petroleum Pakistan Limited
Byron Energy
C&C Energia Ltd
Cabot Oil & Gas Corp.
Caddo International Inc
Cairn Energy
Cairn Energy (UK GAAP)
Cairo Oil Refining Company
Cakra Nusa Darma Ltd
Calcasieu Refining Company
Callon Petroleum
Caltex
Caltex Australia
Calumet Specialty Products Partners
Calvalley Petroleum Inc.
CAMAC Energy Inc
Canacol Energy Ltd
Canada Energy Partners Inc
Canadian Forest Oil Ltd
Canadian Imperial Venture Corp
Canadian Natural Resources
Canadian Oil Sands Trust
Canadian Overseas Petroleum Limited
Canadian Phoenix Resources Corp
Canadian Spirit Resources Inc.
Canamens Energy Limited
Canargo Energy Corp.
Candax Energy Inc.
Canetic Resources Trust
Canext Energy Ltd.
Cano Petroleum
Canoel International Energy
Canoro Resources Ltd.
Canshale Corp
Cantex Energy Corp
Cap Energy Limited
Capco Energy
Capital City Energy Group
Carnarvon Petroleum Ltd
Carnavale Resources Ltd
Carrizo Oil & Gas, Inc
Caspian Energy Inc.
Caspian Oil & Gas Ltd
Castex Offshore, Inc.
Catalina Energy Corp.
CAVU Resources Inc
Caza Oil & Gas Inc
CBM Asia Development Corporation
CCMP Capital Advisors, LLC
CCP
Celtic Exploration Ltd.
Celtique Energie Petroleum Ltd
CEMIG
Cenex
Cenovus Energy Inc.
Central Resources, Inc
Centric Energy
Centrica
Century Assets Corporation
Century Exploration New Orleans, Inc
CEPSA
CEPSA (Spanish GAAP)
Cequence Energy
Ceylon Petroleum Corporation
CGC
CGM, LP
CGX Energy Inc.
Challenger Minerals Inc.
Chancellor Group Inc
Chaparral Energy
Cheetah Oil & Gas Ltd
Cheim Transportes
Chemu Power
Cheniere Energy, Inc.
Chesapeake Energy Corp.
Cheung Kong Infrastructure Holdings Limited
Chevron
Chevron (Hess)
Chevron (pre Texaco)
Cheyenne Resources Corp
Chief Oil & Gas
Chieftain International Co.
China Investment Corporation
China Oilfield Services Ltd
Chinook Energy Inc
Choice Resources Corp
Chrome Capital Inc
Churchill Energy
Cimarex Energy Co.
Circle Oil
Circumpacific Energy Corporation
Cirque Resources LP
Cirrus Energy Corporation
Citadel Capital
Citation Oil & Gas Corp
CITGO Petroleum Corp
CITIC Resource Holdings
CKX Lands Inc
CL&F Resources LP
Clampett Energy Ltd
Clarion Finanz AG
Clayton Williams Energy
Clinch Energy Ltd
Cloudbreak Resources Ltd
CNOOC Ltd
CNPC
CNX Gas Corp
Coastal Corp
Coastal Oil & Gas Ltd
Coastport Capital Inc.
Cobalt International Energy, L.P.
CODEMIG
Cogent Exploration Ltd
COHYDRO
Coldren Resources
Collins & Young Holdings
Colorado Wyoming Reserve Co
Columbus Energy Ltd.
Comet Ridge Limited
Commercial Energy of Montana Inc.
Common Resources
Comp E&P de Petróleo
Compania Colombiana de Inversiones S.A
Compania Consultora de Petróleo (CCP)
Compass Petroleum Ltd.
Composite Energy
Compton Petroleum
Comstock Resources
Concedo ASA
Concho Resources Inc
Congo Petroleum and Gas
Congolaise de Raffinage
Connacher Oil & Gas Limited
Connaught Oil & Gas Ltd
Conoco
Conoco (post Gulf Canada)
ConocoPhillips
ConocoPhillips (Hess)
CONSOL Energy Inc
Consolidated Natural Gas
Consolidation Services, Inc.
Constellation Energy
Construtora Cowan
Construtora Pioneira Ltd
Consumers' Co-operative Refineries Limited
Contact Oil & Gas USA Inc
Contango Oil and Gas Company
Contex Energy Co
Continental Resources
Coogee Chemicals
Cook Inlet Energy LLC
Corlay Global
Corp Financiera Alba
Cosmo Oil
Costa Energy Inc
Cougar Oil and Gas Canada Inc.
Coughlin Land Services LLC
CountryMark
Cove Energy Plc
Covenant Resources Ltd.
CPC Corporation
CPVen
Credo Petroleum Corporation
Crescent Point Energy Corp
Crestar
Crestwood Midstream Partners II, LLC
Crew Energy Ltd
Crimson Exploration
Criteria CaixaCorp
Crocotta Energy
Crossroads Oil & Gas Inc
Crosstex Energy, L.P.
Crow Creek Energy II
Crow Creek Operating Co
Crown
Crown Oil & Gas
Crusader Energy
CS Energy Ltd
Cs Solutions, Inc.
Cuadrilla Resources Ltd
Cubic Energy Inc.
Cue Energy Resources Limited
Cumberland Oil & Gas Ltd
CUPET
Curlew Lake Resources Inc
CVR Energy
Cygam Energy Inc
Czech Republic Resource Corp
Daewoo International
Dalea Partners, LP
Daleco Resources Corp
Dallas Production Inc
Dana Petroleum
Dark Oil
Davis Petroleum Corp.
Daylight Energy, Inc
DCC plc
DCP Midstream Partners, LP
Deep Creek Oil and Gas Inc
Deep Gulf Energy LP
Deep Industries Ltd
DeepExpro, LLC
DeeThree Exploration Inc
Dejour Enterprises Ltd
Dekania Corp
Delavaco Energy Inc
Delek Group
Delek US Holdings
Delp Engenharia
Delphi Energy Corp
Delta Hydrocarbons
Delta Oil & Gas, Inc
Delta Petroleum Corporation
Denbury Resources Inc
Deniz Energy LLC
Denver International Airport
Desco Resources Inc.
Desire Petroleum
Desmarais Energy Corporation
Destilería Argentina de Petróleo
Det Norske
Deutsche Bank
Deutsche Rohstoff AG
Devon Energy Corp.
Dewpoint Resources
Diaz Resources Ltd
Direct Energy Marketing
Discover Petroleum AS
Distrigas
Distrigas (Belgian GAAP)
Divine Inspiration Group
DNO International ASA
Dominican Petroleum Refinery
Dominion Petroleum
Dominion Resources
Dong Energy
Doral Energy
Dorchester Minerals LP
Dorset Exploration Ltd
Double Eagle Petroleum Co
Doxa Energy Inc
Dragon Oil
Drake Energy Ltd
Drillsearch Energy Limited
DTE Energy
DualEx Energy International Inc.
Duke Energy
Dune Energy
Dyas Exploration & Production
Dynamic Offshore Resources, LLC
E.O. Group
E.ON
E.ON Ruhrgas
Eagle Energy Ltd
Eagle Oil Holding Company, Inc
Eagle Rock Energy Partners
Eagle Star Minerals Corp
Eagleford Energy Inc.
Eaglewood Energy Inc
East African Exploration Limited
East Coast Energy
East West Petroleum Corp
Eastern Refinery Ltd.
ECCO Energy, Corp
Ecofin
Ecopetrol
eCORP International, LLC
Ecosse Energy Corp
Eden Energy Ltd
EDF
Edge Petroleum
Edge Resources Inc
Edinburgh Oil and Gas
Edison SpA
EDP Onshore Ltd
Eesti Energia AS
EEX Corp.
EG LNG
Egdon Resources
Egesa Engenharia S.A
EGPC
EGPI Firecreek, Inc
Ekuiti Nasional Berhad
El Maniel International, Inc
El Paso Corp
El Paso Corp. (pre Coastal)
El Paso Pipeline Partners
Elf
Elixir Petroleum
Elk Hills Petroleum Canada Ltd
Ellora Energy Inc
Elm Ridge Exploration Company
Ember Resources Inc
Emerald Bay Energy Inc.
Emerald Energy
Emerald Oil & Gas NL
Emerge Oil & Gas Inc
Emergo Energy Inc
Emirates National Oil Co
EMM Energy Inc
Empa S.A. Servicos de Engenharia
Empire Oil & Gas NL
Empyrean Energy
Enagás
ENAP
Enbridge Inc.
Encal Energy Ltd
EnCana
Encha Group
Encore Acquisition Co.
Encore Energy Partners LP
Encore Oil
Endeavor Natural Gas, LP
Endeavor Power Corporation
Endeavour International Corp
Enegi Oil Plc
Enel SpA
Energas Resources Inc.
Energem Resources Inc
Energen Corp
Energía de Entre Ríos (ENERSA)
Energias de Portugal
EnerGulf Resources
Energy Capital Partners
Energy Development Partners
Energy Equity Resources
Energy Partners
Energy Resources Technology GOM, Inc
Energy West Corporation
Energy XXI
Enerplus Resources Fund
Enervest
Engen Petroleum Limited
Englefield Oil Company
ENI
ENI (AGIP)
ENMAX Corporation
Enovation Resources
EnQuest PLC
Enron Corp.
Enso Group
Entek Energy
Enterprise Oil
Enterprise Products Partners L.P.
EOG Resources
Epsilon Energy Ltd
EQT Corp
EQT Infrastructure Fund
Equal Energy Ltd
Equator Exploration
ERG
Ergon, Inc
ERHC Energy, Inc
Eromanga Hydrocarbons
Escondido Resources II, LLC
Escopeta Oil Co LLC
Essar Oil Limited
Esveegee Steel (Gujarat) Pvt Ltd
ETA ASCON Group
ETAP
Etrion Corp
Euramerica Energy Inc
Eurasia Drilling Company Limited
Eureka Energy Ltd
Eurogas Corp.
EuroGas, Inc
Europa Oil and Gas
EV Energy Partners
Evergreen Resources, Inc.
Evolution Petroleum Corp
Exall Energy Corporation
Excelsior Energy Limited
EXCO Resources
Exile Resources Inc.
Exobox Technologies Corp
Exoma Energy Limited
Exterra Energy Inc
Exterra Resources, LLC
Exxon
ExxonMobil
ExxonMobil (Hess)
EZ Energy USA
Fairborne Energy
Fairfield Energy
FairWest Energy Corporation
Falcon Oil & Gas
Falcon Petroleum
Falkland Oil and Gas
Faroe Petroleum
FieldPoint Petroleum Corporation
Fifth Avenue
Fijian Holdings Limited
Filtim Huzod Oil & Gas
Fina Petroleos de Angola
Finder Exploration Pty Ltd
First Australian Resources Ltd
First Oil
First Reserve Corporation
Flagship Energy Inc.
Flamingo Oil SA
Fletcher Challenge Energy
Flex LNG Limited
Fluxys
Flying J Inc
Foby Engineering Company Ltd
Focus Exploration, LLC
Fondi Italiani per le Infrastrutture SGR SpA
Foothills Resources Inc
Force Energy Corp
Force Energy Inc
Force Fuels Inc.
Force Petroleum
Foreland Refining Corp
Forent Energy Inc
Forest Gate Energy
Forest Oil Corp.
Formcap Corp
Fortress Energy Inc
Fortum (Finnish GAAP)
Fortum (IFRS)
Fortune Energy Empire Group Ltd
Fortune Oil PLC
Fox Energy Exploration Ltd
Foxtrot International LDC
Frazier Resources Company
Freedom Financial Holdings
Freehold Royalty Trust
Freestone Resources, Inc.
Friendly Energy Exploration
Frontier Energy Corp
Frontier Oil Corp
Frontier Resources International, Plc.
Fruitex Ltd
Future Corporation Australia Ltd
FX Energy
GAIL
Gale Force Petroleum
Galizien Energy Corp
Galleon Energy
Galleria Opportunities, Inc.
Gallic Energy
Galloway Energy
Galp Energia
Galvez Energy Corporation
Gary-Williams Energy Corporation
Gas Natural
Gas Natural (Spanish GAAP)
Gas Plus S.p.a.
Gasco Energy Inc
Gasol Plc
Gasper Rice Resources, Ltd.
Gastar Exploration Ltd.
Gastem Inc.
Gasunie
Gasunie (Netherlands GAAP)
Gaz de France (French + IFRS)
Gaz de France (French GAAP)
Gaz de France (IFRS)
Gazprom
Gazprom Neft
GB Energy Limited
GDF SUEZ
GE Energy Financial Services
Gear Energy Ltd
Geminas
Gemini Oil & Gas Fund II, LP
Genel Enerji A.S.
Genesis Energy
Genesis Petroleum
Geo Finance Corporation
Geoconsult Ltda
GeoGlobal Resources Inc.
GeoMet Inc.
GeoPark
GeoPetra
GeoPetro Resources Company
Geopetrol
GeoResources, Inc
Georgina Basin Energy Pty Ltd
Georox Resources Inc
Geotechnology LA CA
GEPetrol
Getty Realty Corp
Giant Industries
Gilby Resources PTY Ltd
Glencore International AG
Global Energy Development
Global Infrastructure Partners
Global Partners LP
Global Petroleum
Global Steel Holdings Ltd
GMX Resources Inc
GNPC
Golar LNG
Gold Oil
Golden Gate Petroleum Ltd
Golden Oil Corporation
Goldnev Resources Ltd.
Goodrich Petroleum Corp
Goodway Refining, L L C
Government of Brunei
Government of Iraq
Government of Mali
Government of the Dominican Republic
Government of Zambia
Gran Tierra Energy
Graña y Montero (GMP)
Grande Portage Resources Ltd
Great Eastern Energy
Great Lakes Resources LLC
Green Star Energies
Greenpark Energy Ltd
Greka Energy
Grid Petroleum Corp
Grimes Energy Company
Groundstar Resources Ltd
Grupa Lotos
Grupo Diavaz
Grupo Sol
GS Caltex
GSPC Ltd
Guardian Exploration Inc
Gulf Canada
Gulf Energy Exploration Corp
Gulf Keystone
Gulf United Energy
Gulfport Energy Corporation
Gulfsands Petroleum
Gun Capital Management Pty Ltd
Gunvor International B.V.
GVK Power & Infrastructure Ltd
GWR Resources Inc
H Oil & Minerals Ltd.
Habanero Resources Inc.
Halim Mazmin Bhd.
Hall-Houston Exploration II, Lp
Hall-Houston Exploration III, L.P.
Hanjin Group
Hansa Hydrocarbons
Hanwha Corporation
Hardy Oil
Harish Chandra (India) Ltd
Harvest Energy Trust
Harvest Natural Resources Inc
Hastings Funds Management Ltd
Hawk Exploration Ltd
Helis Oil & Gas Co., LLC
Helix Energy Solutions Group
Hellenic Petroleum
Hellenic Petroleum (Greek GAAP)
Hemisphere Energy Corporation
Heritage Oil
Hermes Financial Inc.
Hess Corp
Heyco International Inc
HFG Holdings Inc
HHE America Limited
Hicks Acquisition Company I
Highpine Oil & Gas Limited
Hilcorp Energy Company
Hinduja Group
Hindustan Oil Exploration Company Ltd
Hindustan Petroleum
HIP Energy Corporation
HKN Inc.
Hodgkinson Equities Corporation
Holly Corp
Holly Energy Partners, LP
Hoover Energy Partners LP
Horizon Oil
Houston American Energy Corp
Houston Energy, L.P.
Houston Exploration Company
Humble Energy, Inc
Hunt Oil
Hunt Petroleum Corporation
Hupecol LLC
Hurricane Exploration Plc
Husky Energy
Hybrid Energy Holdings
Hyundai Heavy Industries Co
Hyundai Oilbank Co. Ltd
Iberdrola S.A.
Idemitsu
IGas Energy Plc
IMC
Imperial Corporation Limited
Imperial Energy
Imperial Oil
Imperial Petroleum Inc.
INA
INC Natural Resources Group
Independent Resources
Indian Oil Corp.
Indigo Minerals
Indon CBM Ltd
INEOS
Infratil
Initial Oil & Gas SA
Innamincka Petroleum Ltd
INNEX California Inc
INOC
Inpex Corporation
Insignia Energy Ltd
Integral de Servicios Tecnicos S.A.
Interlink Petroleum Ltd
International Commerce and Communications
International Energy, Inc
International Finance Corporation
International Frontier Resources Corporation
International Goldfields Ltd.
International Petroleum Grouping
International Petroleum Investment Company
International Sovereign Energy Corp.
InterOil
Interoil Exploration & Production ASA
Investcan Energy Corp
IOC UK
IONA Energy
Ipiranga
Ironwood Oil and Gas LLC
Irving Oil
Island Oil & Gas
Ismocol De Colombia
Isramco
Italgas
Iteration Energy Ltd
Ithaca Energy
Itochu
Ivanhoe Energy
J.M. Huber Corporation
Jacka Resources Ltd
Japan Energy
Japan Petroleum Exploration
Jarden Corporation
Jay Polychem India Ltd
JED OIL Inc.
Jindal Petroleum Limited
Jindal Stainless Ltd
Jindal Steel & Power Ltd
JKX Oil & Gas
JKX Oil and Gas (UK GAAP)
Jones Energy, Ltd
Jordan Development
Jubilant Energy
Junex
Juniper Exploration LLC
Jura Energy Corp
J-W Operating Company
JX Holdings Inc
JYW Capital Corp
Kaisun Energy Group Limited
Kallisto Energy Corp
Kanvel Finance Pvt Ltd
Kargwal
Karl Thomson Group
Karoon Gas Australia Ltd
KazMunaiGas Exploration Production
KazMunayGas
KCS Energy
Kea Petroleum Plc
KEMA
KenolKobil Limited
Kentucky USA Energy Inc
Kereco Energy
Kern Oil & Refining Co
Kerr-McGee
Key Petroleum Ltd
KG Group
Kierland Resources Ltd
Kilgore Oil and Gas
Kinder Morgan Energy Partners, L.P.
Kinetex Resources Corporation
Kingswood Capital Ltd
Klesch & Company
Knight Energy
Knight Resources, Inc.
Koch Industries
Kodiak Energy Inc
Kodiak Oil & Gas Corp.
Kohlberg Kravis Roberts & Co.
Komitek
Korea Gas Corporation
Korea National Oil Corporation
Kos Energy LLC
Kosmos Energy
Kotoil
KrisEnergy Limited
Kristina Capital Corp
KUFPEC
Kulczyk Oil Ventures Inc.
Kunlun Energy Company Ltd.
Kuwait Energy
Kuwait Petroleum Corporation
KWG Resources Inc
L&M Energy Ltd
La Cortez Energy
Lábrea
Lacy Operations
Lakota Energy
Lander Energy Corporation
Lansdowne Capital
Lansdowne Oil & Gas
Laredo Petroleum
LASMO
Layne Christensen Co
Leed Petroleum PLC
Legacy Oil + Gas Inc
Legacy Reserves
Leni Gas and Oil
Lewis Energy Group
Lexaria Corp
Liberty Energy Corp
Libyan Investment Authority
Libyan National Oil Corporation
Lighthouse Petroleum
Lime Rock Partners
Lime Rock Resources
Linc Energy Ltd.
Linn Energy
Lion Energy Corp
Liquefied Natural Gas
LLog Exploration Offshore, Inc
LNG Energy Ltd.
Lodgepole Energy Corp
Loews Corporation
Logos Engenharia
Longfellow Energy, LP
Longford Energy Inc
Lotus Petroleum
Louis Dreyfus Corp.
Low New Biggin Oil Ltd
Lucas Energy Inc
Lukoil ( Russian GAAP)
Lukoil (US GAAP)
Lunday-Thagard Co
Lundin Oil
Lundin Petroleum
Lux Energy Corp
Luxor Oil and Gas Inc
Lymac, LLC
Lynden Energy Corp
LyondellBasell
Lysander Minerals Corporation
Madagascar Oil
Madalena Ventures Inc
Madison Energy Corp
Maersk Group
Magellan Energy Ltd
Magellan Midstream Partners LP
Magellan Petroleum Corp
MagIndustries
Magnum Energy Inc
Magnum Hunter Resources
Mahalo Energy Ltd.
Mainland Resources, Inc
Majuko Group
Mako Energy Limited
Mako Offshore Exploration
Mammoth Capital Corporation
Manulife Financial
Maple Energy
Mar/Reg Oil Company
Marathon
Mari Gas
Mariner Energy
Maritech Resources, Inc
Marksmen Resources Ltd
Marlin Energy LLC
Marlin Permian, LP
Mart Resources Inc
Martagon Financial Services
Martin Midstream Partners L.P.
Marubeni Corporation
Marvis Petroleum Holding
Marwayne Production Limited Partnership
Mason Dixon Energy LLC
Mass Petroleum Inc
Matrixx Resource Holdings, Inc.
Maurel & Prom SA
Maverick Energy, Inc
Maverick Minerals Corporation
Max Minerals Ltd.
Max Petroleum Plc
Maxim Resources Inc
Maxus Energy
McLaren Resources
McMoRan Exploration Co.
MDU Resources Group
Medco Energi International tbk PT
Mediterranean Oil and Gas
Medley Capital Limited
MEG Energy
Mega Fortune International Limited
MegaWest Energy Corp
Melrose Resources
MEO Australia Ltd
Mercator Lines Ltd
Mercuria Global Energy Solutions
Meridian Energy Corp
Meridian Resources Corp
Merit Energy
Merlin Petroleum Co
Mesa Energy Holdings, Inc
Metgasco Limited
Methanex
Mexco Energy Corporation
MGM Energy
Midmar
Midway Energy Ltd
Mighty River Power
Milagro Exploration
Miller Energy Resources
Mira Resources
MISC Berhad
Mitchell Energy & Dev. Corp.
Mitsubishi Corporation
Mitsui & Co
Mitsui Oil Exploration Co, Ltd
Mittal Energy Investments Pte Ltd
Mobil
Moby Oil & Gas Ltd
Mocoh Resources Ltd
Modena Resources Limited
Modiin Energy Limited Partnership
Mogul Energy International
MOL
Molopo Australia Limited
Momentum Energy Corporation
Monitor Energy Ltd
Montajes JM SA
Montco Energy
Montecito Offshore LLC
Montello Resources Ltd.
Montrose Industries Ltd
Monument Oil & Gas
Mooncor Oil & Gas Corp
Moonstone Energy Pte Ltd
Morgan Creek Energy
Morumbi Oil and Gas Inc
Mosaic Oil
Moscow Refinery
Motor Oil Hellas
MPX Energy Limited
Mubadala Development Company
Murphy Oil
Mustang Oil Ltd
MV Oil Trust
Myanma Oil and Gas Enterprise
N.V. Nuon Energy
Nabors Industries Ltd
Naftagas
Naftan
NAL Oil & Gas Trust
NAM BV
Namcor
Naphtha Israel Petroleum Corporation Ltd
National Fuel Gas
National Iranian Oil Products Refining & Distribution Company
National Offshore LP
National Thermal Power Corp Ltd
Nautical Petroleum
NAV Energy Trust
Nazaki Oil & Gas
NCRA
Neon Energy
Neste Oil
New North Resources Ltd
New Standard Energy Ltd
New Times Group
New Zealand Oil & Gas Limited
New Zealand Superannuation Fund
Newfield Exploration
Newton Energy Corp
Nexen
Nexia Holdings, Inc
Nexstar Energy Ltd
NextEra Energy Resources
Nextraction Energy Corp
Nexus Energy
NFR Energy
NGAS Resources
NGS Energy
Nigeria LNG
Nigeria-Sao Tome and Principe Joint Development Authority
Nighthawk Energy plc
Niko Resources Ltd.
Nilepet
Nimin Energy Corp
Nio Petroleum Limited
NIOC
Nippon Mining Holdings, Inc
Nippon Oil
Nitro Petroleum
Njord Gas Infrastructure AS
NNPC
Noble Energy
Nomura
Nord Oil and Gas
Nordaq Energy Inc
Nordic Oil and Gas Ltd
Nordic Petroleum ASA
Noreco ASA
Norse Energy Corporation
Norsk Hydro (IFRS)
Norsk Hydro (US GAAP)
North American Civil Recoveries Arbitrage
North American Energy Resources, Inc.
North Atlantic Resources
North Energy ASA
North European Oil Trade Ltd
Northeast Natural Energy, LLC
Northern Blizzard Resources Inc
Northern Empire Energy Corp
Northern Exploration
Northern Explorations Ltd
Northern Oil & Gas, Inc
Northern Petroleum
Northern Spirit Resources Inc.
Northstar Exploration and Production Inc
Northstar Interests Inc
Northstar Offshore Energy Partners
Norwest Energy NL
Nostra Terra Oil & Gas
NOVA Chemicals
Novatek
Novus Acquisition and Development Corp
Novus Energy Inc
NOXXE LLC
Ntr Partners, Llc
Nuevo Energy Co.
NuLoch Resources Inc
Numac Energy
NuStar Energy L.P.
NuVista Energy Ltd.
Nynas
O&G Energy Partners LLC
O.I.L. Niagaran LLC
Oakridge Energy Inc
Oando
Occidental
Ocean Energy
Odebrecht
Odyssey Petroleum Corp.
OGDCL
OGX Petroleo e Gas Participacoes SA
Oil & Gas Investment Ltd
Oil Combustibles SA
Oil Exploration Consortium
Oil India
Oil Refineries Ltd.
Oil Reserve Corp
Oil Search
Oilex
Oilexco
Oilmoz Lda
Oilquest Ltd
Oiltanking GmbH
Olympic Peru Inc
Oman LNG
Oman Oil Company
OMDA Oil and Gas, Inc
Omega Energy Colombia
OMV
OMV (Austrian GAAP)
ONGC
Opal Energy Corp
Open Choke Exploration LLC
Open Range Energy Corp
Ophir Energy plc
Opon International LLC
Oranje Nassau Group
Oranto Petroleum International Ltd
Orca Exploration Group
Orchard Energy
Orient Global
Orient Petroleum International Inc
Origin Energy
Orion Oil & Gas Corporation
Orleans Energy Ltd.
Orteng
Osaka Gas
Osceola Hydrocarbons Limited
OSHO Energia Limitada
Osyka Corporation
OTP Bank
P3 Global Energy Limited
PA Resources AB
Pace Oil & Gas Ltd
Pacific Energy & Mining Company
Pacific Energy Resources
Pacific Rubiales
Paco Integrated Energy, Inc
Painted Pony Petroleum Ltd
Pala Assets Holdings Limited
Paladin Resources plc
Palau Pacific Exploration
Pan Andean Resources
Pan Orient Energy Corp
Pan Pacific Petroleum
PanCanadian Petroleum
Pancontinental Oil & Gas NL
Panhandle Energy
Panhandle Oil & Gas
Pan-Petroleum Limited
PanTerra Resource Corp
Pantheon Resources
Paradigm Oil and Gas, Inc.
Parallel Petroleum Corporation
Paramax Resources Ltd
Paramount Resources Ltd.
Parex Resources, Inc.
Park Place Energy Corp
Parkland Income Fund
Partex Oil and Gas Group
Pass Petroleum, Inc.
Patriot Energy Sucursal Colombia
Pavilion Energy Resources
Paxton Energy Inc
Paz Oil Company
PC International Ltd
PdV
Pearl Energy
Pearl Exploration & Production
PEC Minerals L.P
Pegasi Energy Resources Corp
Pemberton Energy Ltd
Pembina Gas Services Limited
Pemex
Pengrowth Energy Trust
Penn Virginia
Penn West
PennzEnergy
Pennzoil
Pennzoil Quaker State
Peoples Energy
Pepper Rock Resources Corp
Peregrine Oil & Gas LP
Perenco
Perez Companc
Perpetual Energy Inc
Persian Gold PLC
Pertamina
Perupetro
Petersen Group
Petoro AS
Petra Energia S/A
Petro Andina Resources Inc.
Petro Caribbean Resources Ltd
Petro Energy Resources Corp
Petro Star Inc
Petro Uno Resources Ltd
Petro Viking Energy Inc
Petro Vista Energy Corp
Petroamerica Oil Corp
PetroAsian Energy Holdings Ltd
PetroBakken Energy Ltd
Petrobangla
Petrobank Energy & Resources
Petrobras (Brazilian GAAP)
Petrobras (IFRS)
Petrobras (USGAAP)
Petrobras Argentina SA
Petrobras International Braspetro
Petrobru
Petro-Canada
Petroceltic International
PetroChina
Petroci
Petrodome Energy, LLC
Petrodorado Energy Ltd.
Petrodorado Ltd
PetroEcuador
PetroEdge Energy
Petrofac
Petrofina
Petroflow Energy Ltd
Petrogal
PetroGlobe Inc.
Petrohawk Energy Corp
PetroHunter Energy Corporation
Petrojam Limited
PetroKamchatka Plc
PetroKazakhstan
Petrol Ofisi AS
PetroLatina Energy
Petrolera Monterrico
Petroleum Consolidators of America, Inc
Petroleum Dev. Oman
Petroleum Development Corp
Petrolia Inc
Petrolifera Petroleum Ltd.
Petrom
Petroma Inc
Petromanas Energy Inc
Petromin PNG Holdings Limited
Petrominerales Ltd.
Petron
Petronas
Petronas Carigali Sdn Bhd
PetroNeft Resources plc
Petronet LNG
Petropars
Petroperu
Petroplus Holdings
PetroQuest Energy, Inc
Petro-Reef Resources Ltd.
Petros Petropoulos
PetroSA
Petrosen
Petrosibir AB
PetroSun Fuel
Petrosynergy Ltda
Petrotrin
Petrouruguay
PetroVal, Inc.
Petrovietnam
PetroWorth Resources Inc
Petsec Energy
PGS Overseas AS
PharmAust Ltd
Pharyn Resources
Philippine Nat. Oil Co.
Phillips
Phillips-Tosco
Phoenix Exploration
PICO International Petroleum
Pilgrim Petroleum Corporation
Pilot Corporation
Pilot Travel Centers
Pine Energy, LLC
Pinecrest Energy Inc.
Pinnacle Gas Resources, Inc
Pinto Petroleum Ltd
Pioneer Natural Resources
Pioneer Southwest Energy Partners L.P.
Pisces Energy, LLC
Pitkin Petroleum
PKN Orlen
Placid Refining Company LLC
Plains All American Pipeline
Plains Exploration & Production
Plains Resources, Inc.
Plateau Mineral Development
Platinum Energy Resources
Pluris Energy Group Inc
Pluspetrol
Po Valley Energy
Poco Petroleums
Pogo Producing Co.
Polar Star Canadian Oil and Gas, Inc
Polish Oil & Gas
Poplar Creek Resources
Portal Resources Ltd
PostRock Energy
Powder Holdings, LLC
Power Oil & Gas Inc
PowerGen
Precision Petroleum Corp
Preem
Premcor
Premier Energy Corp
Premier Oil
Premier Oil (UK GAAP)
President Petroleum Company Plc
Preston Exploration
Primary Natural Resources III
Primary Petroleum Corporation
Primary Petroleum Pty Ltd
Primax
PrimeEnergy Corporation
PrimeGen Energy Corp
Primera Energy Resources
PrimeWest Energy
Prodoil S.A.R.L
Profound Energy Inc.
Progress Energy Resources
Progress Energy Trust
Projeto Campo Escola
ProspEx Resources
Prosys Group
Providence Resources Inc
Providence Resources PLC
Provident Energy Trust
PT Archipelago Resources
PT Bama Bumi Sentosa
PT Baruna Nusantara Energy
PT Bayu Energi Lestari
PT Brilliance Energy
PT Bumi Hasta Mukti
PT General Energy Indonesia
PT Harpindo Mitra Kharisma
PT Kaliala Production
PT Kalisat Energi Nusantara
PT Karya Inti Petroleum
PT Kutai Timur Resources
PT Leogryph Indonesia
PT Northern Yamano Tech Oil Resources
PT Putindo Bintech
PT Radiant Nusa Investama
PT Realto Energi Nasantara
PT Sarana Pembanguan Riau
PT Sargas & Vegas
PT Sele Raya
PT Suma Saruna
PT Tiga Musim Mas Jaya
PT Toba Sejahtera
PT Transasia Resources
PT. Energi Mega Persada Tbk
PTT
PTTEP
Publigaz SA
Puckett Land Company
Pure Energy Resources Ltd
Pyramid Oil Company
Pyramid Petroleum, Inc.
Qatar Petroleum
Quantum Resource Management, LLC
Quatro Resources
Queensland Gas Company
Queiroz Galvao
Quest Oil Corporation
Quest Petroleum NL
Quest Resource Corporation
Questar
Questerre Energy Corp
Quetzal Energy Ltd
Quicksilver Gas Services LP
Quicksilver Resources Inc
Quippo Infrastructure Equipment Ltd
Rabb Resources Limited
Radius Resources Corp
Raffia Oil SARL
Rain Resources Inc
Rainchief Energy Inc
RAK Petroleum
RAL Engenharia
Ram Energy Resources
Ramba Energy Limited
Range Oil & Gas
Range Resources Corp
Range Resources Limited
Ranger
Ranger Canyon Energy Inc
Ranger Energy Ltd
Ranhill Bhd
Reach Oil & Gas Ltd
Realm Energy International Corp
Reconcavo E&P S/A
Recope
Recovery Energy, Inc
Red Cloud Exploration, LLC
Red Emperor Resources NL
Red Fork Energy Limited
Red River Oil & Gas, LLC
Red Sky Energy Ltd
Red Willow Production Company
Redcliffe Exploration Inc.
Reef Resources Ltd
Refinaria de Manguinhos
Regal Petroleum
Regal Resources Inc.
Regency Energy Partners
Relentless Resources Ltd
Reliable Energy Ltd
Reliance Industries Limited
Renaissance Energy
Renegade Petroleum Ltd
ReoStar Energy Corp
Repsol
Repsol-YPF
Repsol-Ypf (Spanish GAAP)
Republic Energy Ventures, LLC
Republic Exploration LLC
Republique Gabonaise
Resaca Exploitation, Inc
Reserve Petroleum Company
Reservoir Resources Ltd
Resolute Energy Corporation
Result Energy Inc
Reviso Energy Ltd.
Revus Energy
Rex Energy Corporation
Rheochem PLC
Rialto Energy Ltd
Riata TransAtlantic LLC
Rich Minerals Corporation
Richards Oil and Gas Limited
Rider Resources Ltd
Ridgewood Energy Corp
Rigel Energy
Riley Resources Inc
Rise Energy Partners, L.P.
Robert L. Bayless, Producer LLC
ROC Oil
ROCH S.A
Rochester Energy Corp.
RockBridge Energy Inc.
Rockhopper Exploration
Rocksource ASA
Rodinia Oil Corp
Rogers Oil & Gas Inc
Rohöl-Aufsuchungs AG
Rosetta Resources Inc.
Rosneft
Royal Dutch Shell
Royal Energy Resources, Inc
Royal Offshore, LLC
Royal Quantum Group, Inc.
Royale Energy Inc.
Running Foxes Petroleum Inc
Russneft
Rustler Petroleum Inc
RWE AG
RWE Energie
RWE-DEA
Ryder Scott
Ryland Oil Corporation
Sabre Oil & Gas Ltd
Saccharum Energy Corp
SacOil Holdings Limited
Saga
Sagex Petroleum AS
Sagres Energy Inc
Sagres Energy Inc (pre reverse takeover)
Sahara Energy Ltd
Sahara Oil and Gas
Sakhalin Energy
Salamander Energy
Salinas Energy Ltd
Saltpond Offshore Producing Company
Samir SA
Samson
Samson Oil & Gas Ltd
Samsung Corporation
San Joaquin Refining
San Leon Energy Plc
San Marco Petroli S.p.A.
San Miguel Corporation
San Severina Holding SA
SandRidge Energy
Sangam Limited
Santa Fe Snyder
Santos
Santos (Aus GAAP)
Saratoga Resources
Sarmi Papua Asia Oil Ltd
Sasol Limited
Sasquatch Exploration LLC
Saudi Aramco
Savant Alaska LLC
Savla Enterprises Pvt Ltd
Savoy Energy Corp
Savoy Energy LP
Saxon Oil Company
Sberbank
Scottish and Southern Energy
ScottishPower
Sea Dragon Energy Inc
SeaEnergy Plc
Seagull Energy Corp.
Seaview Energy Inc
Seawell Limited
SECI
Second Wave Petroleum
Sector Speculare
SemGroup
Sempra Energy
Seneca Resources Corporation
Senetek PLC
SEPLAT Petroleum Development Company Ltd
Sequel Energy LLC
Serica Energy
Serrano Energy Ltd
Servicios Ojeda CA
Severo Villares
Shaanxi Yanchang Petroleum
ShaMaran Petroleum Corp
Sharon Energy Ltd
Shell Canada
Shell Group (T&T)
Shell Group (US GAAP)
Shell Group Pre Reserve Restatement
Shell Italia E&P
Shell Oil (US)
Shelter Bay Energy Inc.
Sheridan Holding Company I, LLC
Sherritt International Corp
Shoreline Energy Fund
Showa Shell
SHV Holdings
Sibinga Petroleum Ltd
Sibir Energy
Sidanco
Signal Energy
Signature Exploration and Production
Silver Eagle Refining
Silver Marlin Oil & Gas
Silverstone Energy
Simba Energy Inc.
Sinclair Oil Corporation
Singapore Petroleum
Singular Oil & Gas, Inc
Sino Oil and Gas Holdings
Sinochem Corporation
Sinopec
Sintez Group
Sipet Agropastoril Ltda
Sipetrol
Sirius Petroleum
Sistema
SK Corporation
SK Energy
Skagen 44 AS
Skeie Energy AS
Skope Energy Partners
Sky Petroleum, Inc
SkyWest Energy Corp.
Slovakia Government
Slovnaft
SM Energy Company
Snam Rete Gas
SNH
SNPC
Snyder Oil Corp.
SOCAR
Société Mauritanienne des Hydrocarbures
Soco International
S-Oil
Sojitz Corp
Solimar Energy Limited
Solo Oil Plc
Somerset Oil Refinery
Somoil Internacional de Petróleo do Brasil Ltda
Sonagas
Sonangol
Sonat
Sonatrach
Sonde Resources Corp
Sonorex Oil & Gas
Sorgenia E&P SpA
Sound Energy Trust
Southeastern Oil and Gas, LLC
Southern California Public Power Authority
Southern Pacific Resource Corp.
Southwest Resources, Inc.
Southwestern Energy Co.
Spartan Exploration Ltd
SPC
Spectra Energy Corp
Sphere Petroleum
Spider Resources Inc
Spindletop Oil & Gas Co
SPN Resources L.L.C.
Spring Energy Norway AS
Sprott Resource Corp
SREI Infrastructure Finance Ltd
St1
Standard Oil Company USA Inc
Star Energy Group Limited
Star Uranium Corp
Starfish Oil & Gas
Statoil (IFRS)
Statoil (Norwegian GAAP)
Statoil (US GAAP)
Statoil ASA
Stealth Energy Inc.
Stealth Ventures
SteelRiver Infrastructure Partners
Stelinmatvic Industries Ltd
Stellar Resources Limited
Stephens Production Co LLC
Sterling Energy
Sterling Resources Ltd.
Stetson Oil & Gas Ltd
Stone Energy
Stone Energy Corp. (pre Basin)
Storm Cat Energy Corporation
Storm Exploration Inc
STR Projetos e Participações Ltda
Strategic American Oil Corporation
Strategic Oil & Gas Ltd
Stratic Energy Corporation
Striker Oil & Gas
Strikewell Energy Corp
Stroud Energy
Stuart Petroleum Ltd
STX Energy
Sud Oil
Suelopetrol
Suez Environment
Sumbe AO
Sumitomo Corporation
Sun Cal Energy, Inc.
Sun Century Petroleum Corporation
Sun Red Capital Corporation
Sun Resources NL
Sun River Energy, Inc
Suncor
Sundance Energy, Inc.
Sunland Production Partners
Sunoco
Sunoco Logistics Partners L.P.
Sunset Energy Ltd
Superior Oil & Gas Co
Superior Plus Corp
Sure Energy Inc
Surge Energy Inc
Surge Global Energy
Surgutneftegaz (Russian GAAP)
Suroco Energy Inc
Svenska Petroleum Exploration AB
SWEPI LP
Swift Energy Co
Sydkraft AB
Tabasco Oil Company LLC
TAG Oil Ltd.
Talisman Energy
Tallahassee Petroleum Inc
Talon Oil & Gas LLC
TAMM Oil & Gas Corp
Tamoil
Tana Exploration Company LLC
Tango Energy Inc
Tap Oil Limited
TAQA
Targa Resources Partners LP
Target Energy Limited
Tata Sons
Tatneft
Technip
Teck Cominco
Técnica Vial S. en C. A
Tecpetrol
Teine Energy Ltd.
Tekoil & Gas Corporation
Telpico LLC
Tenby Inc
Tengasco, Inc
Terra Energy Corp
Terra Ventures Inc
Terrain Energy Limited
Tesoro Petroleum Corp.
Tethys Petroleum Limited
Teton Energy Corp
TETRA Technologies
Texaco
Texalta Petroleum Ltd
Texas Allied Petroleum, Inc
Texas Producers Energy LLC
Texas Standard Oil & Gas LP
Texas Vanguard Oil Co
Texon Petroleum Ltd
TG World Energy Corp
Thai Oil
The Beard Company
Thrust Energy Corp
Thunderbird Energy Corp.
Tiberius Capital, LLC
Tiger Renewable Energy Limited
Timberlake Energy Solutions
Tinc Petroleum
Tiway Oil AS
TNK (Tyumen Oil)
TN-K Energy Group Inc
TNK-BP International Ltd
Tokyo Gas
Tom Brown Inc.
Tonen
TonenGeneral Sekiyu
Topaz Energy and Marine
Toreador Resources Corporation
Torquay Oil Corp
Torrential Energy Ltd
Tortoise North American Energy Corp
Toscana Capital Corporation
Tosco
Total
Total (French GAAP)
Total (Hess)
Total (pre PetroFina & Elf)
TotalFina
Touchstone Resources Ltd.
Tourmaline Oil Corp
Tower Resources
Toyota Tsusho Corporation
TPG Capital L.P.
Tracinda
Trafina Energy Ltd
Trans Energy Inc
TransAmerican Energy Inc
TransAtlantic Petroleum Corp
TransCanada Corporation
Transeuro Energy Corp
TransGlobe Energy Corporation
TransMontaigne Partners L.P.
Traverse Energy Ltd
Treaty Energy Corporation
Trendwell Energy
Tri Valley Corp
Triangle Petroleum Corporation
TriAxon Resources Ltd
Tri-C Resources, LLC
Trigeant Petroleum
TrinCan Capital Corp.
Trioil Resources Ltd
Trioil Resources Ltd (pre reverse takeover)
Tripetrol Petroleum SA
Triple 8 Energy Ltd
TriStar Oil & Gas Ltd
Triton Energy
Triton Energy Corp.
Trivello Energy Corp
Triwood Capital Corp
Troms Kraft Group
True Energy Trust
Trunkline LNG
Tudor Corporation
Tullow Oil
Tullow Oil PLC (UK GAAP)
TUPRAS
Turkish Petroleum Corporation
Turkmengas
Turkmenneft
Twin Butte Energy Ltd
Twoco Petroleums Ltd
TXCO Resources
TXU Corp.
Tyner Resources Ltd
U.S. Energy Corp
U.S. Oil & Refining Co.
UBG Berhad
UK Methane Ltd
Uktatnafta
Ultra Petroleum Corp
Ultramar Diamond Shamrock
Ultrapar
Unbridled Energy
UNEV Pipeline, LLC
Union Fenosa Gas
Union Pacific Resources
Unipetrol
Unipetrol (CAS)
Unit Corp
Unitec Energy
United Refining Company
United Refining Energy Corp
United States Oil & Gas Corporation
Universal Power Corp
Universe Gas & Oil Co
Unocal
UP Petroleo do Brasil Ltda
Upland Oil & Gas
Urals Energy Public Company
US Natural Gas Corp
UTC Engenharia S.A
Uzbekneftegaz
Vaalco Energy Inc
Valdel
Vale do Rio Doce
Valence Operating Company
Valero Energy
Valeura Energy Inc
Valhalla Oil & Gas
Valiant Petroleum plc
Valley Falls Co
Vanco Energy
Vanguard Natural Resources
Vanterra Energy, Inc.
Vast Exploration Inc
Vastar Resources Inc.
Vasundhara Resources Ltd
Veba Oel (German GAAP)
Veba Oel (US GAAP)
Vecta Energy Corp.
Vedanta Resources plc
Velocity East Texas Gathering, LLC
Velocity Energy Inc
Venoco
Venture Production
Veraz Petroleum
Verbundnetz Gas AG
Verenex Energy Inc.
Vermilion Energy Inc
Verus Investments Limited
Vesta Capital Corp
Vetra Group
Victoria Oil & Gas
Victoria Petroleum N.L.
Videocon Industries Ltd
Viking Petroleum
Viking UK Gas Ltd
Vintage Petroleum Inc.
Viper Resources, Inc
Virgin Offshore U.S.A., Inc.
Virginia Indonesia Company LLC
Virtual E&P Sector
Vitol
Vitória Ambiental Engenharia e Tecnologia S.A
Volga Resources SICAV-SIF SA
Vopak
Vopak LNG
Vortex Resources Corp
Voyager Energy Ltd
Voyager Oil & Gas, Inc.
Vung Ro Petroleum
W & T Offshore
Walter Energy, Inc.
Walter Oil & Gas Corporation
WAPco
Wapiti Energy, LLC
Warren Resources Inc
Warwick Energy
Washington Empreendimentos E Participacoes Ltda
Weald Petroleum Development Ltd
Webb Exploration and Production LLC
Wedge Energy International
Wessex Exploration
West Canyon Energy Corp
West Energy Ltd
West Isle Energy Inc
Westcoast Energy
Westcore Energy
Western Canada Energy Ltd
Western Chief Operating Co
Western Gas Partners
Western Gas Resources
Western Petroleum Commodities Inc
Western Plains Petroleum Ltd
Western Refining
WesternZargos Resources Ltd.
WestFire Energy Ltd
Westmont Resources Inc
Westoil Limited
WestSide Corporation Ltd
Westway Group
Whitecap Resources Inc.
Whiting Petroleum Corporation
WHL Energy Limited
Wild Stream Exploration
Wildhorse Resources, Llc
Williams Companies
Williams Partners
Winchester Oil & Gas SA
Winstar Resources Ltd.
Wintershall
Wintershall (German GAAP)
Winwell LLC
Woburn Energy PLC
Wolverine Gas And Oil Corporation
Woodside Petroleum
Woodside Petroleum (Aus GAAP)
World Energy Research
World Point Terminals Inc.
Wrangler West Energy Corp
Wyoming Refining Company
Xcite Energy Limited
XCL Ltd.
XGEN Ventures Inc
XState Resources Limited
Xstrata
X-Terra Resources Corporation
XTO
Xtract Energy
XXL Energy Corp
Yams Petroleum
Yangarra Resources Ltd
Yinka Folawiyo & Sons
Yoho Resources Inc
YPF (pre Repsol)
YPF Sociedad Anonima
YPFB
Yukos
ZAAB Energy AG
Zachry American Infrastructure LLC
Zargon Energy Trust
Zarubezhneft
Zaver Petroleum
Zenergy Inc

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