COSL Drilling Europe News and Activities

Headquarters: Norway

COSL Drilling Europe is owned by China National Offshore Oil Corporation.

China National Offshore Oil Corporation is one of the...

China National Offshore Oil Corporation has a direct presence in 2 countries.

China National Offshore Oil Corporation has 6 subsidiaries including China BlueChemical, China Oilfield Services and Cnooc.

They are in:

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