オフショア契約掘削トップ企業
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Transocean Ltd
-
Seadrill Ltd
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Diamond Offshore Drilling Inc.
-
China Oilfield Services Limited
-
Saipem SpA
*免責事項:上位企業は順不同
Transocean Ltd
Seadrill Ltd
Diamond Offshore Drilling Inc.
China Oilfield Services Limited
Saipem SpA
*免責事項:上位企業は順不同