B
Badak LNG (P)
Bashneft (P)
Berry Petroleum
BG Group (IFRS)
Bharat Petroleum (P)
BHP Billiton (IFRS)
BP (IFRS) 

C
Cabot Oil & Gas
Cairn Energy (IFRS)
Callon Petroleum
Caltex Australia (P)
Canadian Natural Resources
CEPSA
Chesapeake Energy
Chevron
Cimarex Energy
CITGO
CNOOC
CNPC
ConocoPhillips
Cosmo Oil
CPC Corp.

D
Dana Petroleum (P)
Denbury Resources
Devon Energy
Distrigas (IFRS)
Dominion Resources
Duke Energy

E
E.ON Ruhrgas
Ecopetrol
EGPC (P)
El Paso Corp.
ENAP
Encana
Energy Partners
ENI (IFRS)
EOG Resources
E.on (P)
ERG
ExxonMobil 

F
Fluxys (P)
Forest Oil
Frontier Oil Corp

G
GAIL
Galp Energia (P)
Gas Natural (IFRS)
Gasunie (IFRS)
Gaz de France (IFRS)
Gazprom
Gazprom Neft
Giant Industries
Grupa Lotos

H
Hellenic Petroleum (IFRS)
Hess Corporation
Hindustan Petroleum (P)
Holly Corp
Hunt Oil (P)
Husky Energy

I
Idemitsu (P)
Imperial
Indian Oil Corp.
INA-Naftaplin
INOC (P)
Interoil

J
JKX Oil & Gas (IFRS)

K
KazMunayGas (P)
KUFPEC (P)
Kuwait Petroleum Corp

L
Libyan National Oil Corp (P)
Lukoil (US GAAP)

M
Marathon
Mitsui (P)
MOL
Motor Oil
Murphy

N
Neste Oil
Newfield Exploration
Nexen
Nigeria LNG (P)
NIOC (P)
Nippon Oil
NNPC
Noble Energy
Novatek

O
Occidental
Oil India (P)
Oman LNG (P)
OMV (IFRS)
ONGC
Osaka Gas (P)

P
Panhandle Energy (P)
PdV
Pemex
Penn West
Pertamina (P)
Petrobras
Petrobras Energia (P)
PetroChina
Petro-Canada
PetroEcuador (P)
Petrohawk
Petroleum Dev. Oman (P)
Petron (P)
Petrom (P)
Petronas (P)
Petronet (P)
PetroPlus International (P)
PetroSA (P)
Petrotrin (P)
Petrovietnam (P)
Phillippine Nat. Oil Co. (P)
Pioneer Natural Resources
PKN Orlen
Plains E&P
Polish Oil & Gas
Premier Oil (IFRS)
PTT (P)
PTT EP (P)

Q
QCPC (P)
Questar
Quicksilver Resources

R
Reliance Industries (P)
Repsol-YPF (IFRS)
Rosneft
Royal Dutch Shell (IFRS)
Russneft (P)
RWE DEA

S
S-Oil (P)
Sakhalin Energy (P)
Santos (IFRS)
Saudi Aramco (P)
Shell Canada
Showa Shell
Singapore Petroleum (P)
Sinopec
SK Corporation
Slovnaft
SOCAR (P)
Sonangol (P)
Sonatrach
Southwestern Energy
SPC (P)
StatoilHydro
St. Mary Land & Exploration
Stone Energy Corp
Suncor
Sunoco
Surgutneftegas (P)
Swift Energy

T
Talisman Energy
Tatneft
Tesoro
Thai Oil (P)
TNK-BP
Tokyo Gas (P)
TonenGeneral Sekiyu (P)
Total (IFRS)
TPAO (P)
Tullow Oil (IFRS)
TUPRAS
Turkmenneft (P)
TXU Corp (P)

U
Ultra Petroleum
Unipetrol (IFRS)
Unit Corp

V
Valero Energy

W
Western Refining
Williams Companies
Wintershall (IFRS)
Woodside Petroleum (IFRS)

X
XTO

Y
Yukos (P)

Anadarko Petroleum
BG Group (IFRS)
BP (IFRS)
Chevron
CNOOC
ConocoPhillips
Devon Energy
ENI (IFRS)
ExxonMobil
Hess Corporation
Marathon
Noble Energy

Occidental
OMV (IFRS)
Petrobras
Petrochina
Repsol YPF (IFRS)
Royal Dutch Shell (IFRS)
Sinopec
StatoilHydro
Sunoco
Total (IFRS)
Valero 

Anadarko Petroleum
Apache Corp
BG Group (IFRS)
BHP Billiton
BP (IFRS)
Chesapeake Energy
Chevron
Cimarex
ConocoPhillips
Devon Energy
Encana
El Paso
ENI (IFRS)
EOG Resources
ExxonMobil
Gazprom Neft
Hess Corporation
Marathon

Murphy Oil
Newfield Exploration
Nexen
Noble Energy
Occidental
OMV
Petrobras
PetroChina
Questar
Repsol-Ypf (IFRS)
Royal Dutch Shell (IFRS)
Southwestern Energy
Sunoco
StatoilHydro
Talisman Energy
Total (IFRS)
Valero Energy
Williams Companies
XTO Energy

Abbot Group (IFRS)
Abbot Group (UK GAAP)
Alberta Energy
Amoco
Anderson Exploration
Arco
Barrett Resources Corporation
Basin Exploration
Belco Oil and Gas
BG Plc (UK GAAP)
BHP
BHP Billiton (Aus$)
BHP Billiton (UK GAAP)
BP (UK GAAP)
BP (US reported)
BP (pre Amoco)
British Borneo
Burmah Castrol
Burlington Resources
Cairn Energy (UK GAAP)
Caltex
CEPSA (Spanish GAAP)
Chevron
Chieftain International Co.
Coastal Corp
Conoco
Consolidated Natural Gas
Cosmo
Crestar
Crown
Distrigas (Belguim GAAP)
Edinburgh Oil & Gas
EEX Corp.
El Paso Corp. (pre-Coastal)
Elf
Encal Energy Ltd.
ENI (AGIP)
Enron Corp.
Enterprise Oil
Exxon
Evergreen Resources
Fletcher Challenge Energy
Force Energy
Fortum (Finnish GAAP)
Fortum (IFRS)
Gas Natural (Spanish GAAP)
Gasunie (Netherlands GAAP)
Gaz de France (French GAAP)
Gulf Canada
Hellenic Petroleum (Greek GAAP)
Houston Exploration
Idemitsu
Japan Energy
JKX Oil & Gas (UK GAAP)
KCS Energy
Kerr-McGee
LASMO
Lukoil (Russian GAAP)
Louis Dreyfus Corp.
Lundin Oil
Mitchell Development
Mobil

Monument Oil and Gas
Norsk Hydro (US GAAP)
Norsk Hydro (IFRS)
Nuevo Energy
Numac
Ocean Energy
OMV (Austrian GAAP)
Paladin Resources
PanCanadian
Pennz Energy
Pennzoil
Pennzoil Quaker State
Perez Companc
Petrobras (Brazilian GAAP)
Petrofina
PetroKazakstan
Phillips
Plains Resources
Poco Petroleums
Pogo Producing
PowerGen
Premcor
Premier Oil (UK GAAP)
Ranger
Renaissance Energy
Repsol
Repsol-YPF (Spanish GAAP)
Rigel Energy
RWE Energie
Saga
Santa Fe Snyder
Santos (Australian GAAP)
Seagull Energy
Shell (US GAAP)
Shell Group T & T
Shell Oil (US)
Snyder Oil Corp
Sonat
Statoil (Norwegian GAAP)
Statoil (US GAAP)
Sydkraft AB
Texaco
Tom Brown
Tosco
Total (French GAAP)
Total (pre mergers)
TotalFina
Triton Energy
Tullow Oil (UK GAAP)
Ultramar Diamond Shamrock
Union Pacific Resources
Unipetrol (CAS)
Unocal
Vastar Resources
Veba Oel
Vintage Petroleum
Western Gas Resources
Wintershall (US GAAP)
Woodside Petroleum (Aus GAAP)
XCL Ltd
YPF