B
P
E
xxon Mobil
S
hell
Total
E
nergy
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
Y
Z
A
ABB
B
B
P
C
C
hevron-Texaco
CNOOC
C
onoco
C
onsolidated Edison
COPEC
Chile
D
D
uke Energy
D
ynegy
E
Ecopetrol
Colombia
Endesa
ENI
E
xxon Mobil
G
Gazprom
G
eneral Electric
H
Hess
I
Indian Oil
L
Lukoil
M
Marathon Oil
O
O
ccidental Petroleum
Oil & Gas of India
Osaka Gas
P
Pemex
Mexico
Petrobras
Brasil
PetroChina
Petroecuador
Petroleos de Venezuela
R
R
eliant
E
nergy
Repsol
Brasil
Rolls-Royce
S
SASOL
S
chlumberger
S
hell
S
iemens
Sinopec Corp.
Statoil
T
Total
V
V
alero
E
nergy
Y
Yukos