oilfield
1.0
40704
oil-field
0.67
57674
shell oil company
0.59
53324
wytch farm
0.58
57925
oilfields
0.57
48981
prudhoe bay oil field
0.57
57979
schlumberger
0.57
47952
phillips petroleum company
0.55
56781
petroecuador
0.55
56930
spindletop
0.54
55646
adnoc
0.54
57034
qatar petroleum
0.53
56947
oil-shale
0.53
57066
chevron corporation
0.53
55512
syncrude
0.52
57309
transocean
0.52
56327
norwegian continental shelf
0.52
57592
standard oil company of california
0.52
57897
amoco
0.52
49616
canadian oil sands
0.51
57775
sedco
0.51
57812
royal dutch shell
0.51
48410
cnpc
0.5
56053
oil
0.5
574
natural-gas
0.5
54445
subsea
0.5
48016
nexen
0.5
57562
rio tinto group
0.5
56980
ekofisk
0.5
57812
national iranian oil company
0.5
56274
bapco
0.5
57842
unocal
0.5
53726
china national petroleum corporation
0.5
57395
north sea oil
0.5
49763
novatek
0.49
54623
pemex
0.49
51372
kosmos energy
0.49
57838
bechtel corporation
0.49
57191
kerr-mcgee
0.49
55131
sonatrach
0.49
54879
petrofac
0.49
57867
athabasca oil sands
0.49
55196
transneft
0.49
55426
motiva
0.48
57923
workover
0.48
57674
nioc
0.48
55788
fpso
0.48
56223
union oil company of california
0.48
57950
china national offshore oil corporation
0.48
57557
statoil
0.48
52410
conocophillips
0.48
38736
exxon-mobil
0.48
57908
barnett shale
0.48
56485
southern california gas company
0.48
57826
crescent petroleum
0.48
57384
chevrontexaco
0.48
57604
upgrader
0.47
57967
conoco
0.47
53002
ypf
0.47
55104
bakken formation
0.47
56993
standard oil of california
0.47
56666
alyeska
0.47
56746
sinopec
0.47
48474
transcanada
0.47
55995
texaco
0.47
45335
encana
0.47
56811
iron-ore
0.47
56353
petrochina
0.47
54971
cameco
0.46
57059
sun oil company
0.46
57842
oando
0.46
57897
greka
0.46
57312
oil and gas
0.46
33489
standard oil of new jersey
0.46
57309
taqa
0.46
57114