China Oilfield Services (COSL) is an oilfield services company. It is a majority owned subsidiary of Chinese state owned company CNOOC Group.[1] It also has a listed sister company in Hong Kong, CNOOC Limited.
China Oilfield Services usually purchases off shore vessels (OSVs) and operates them in Southeast Asia, the Middle East and Central Asia in off shore projects of CNOOC. It also operates in Indonesia, Malaysia and the Caspian Sea.
Overseas
COSL's overseas revenue surged 133% year on year in the first half of 2015 to 209.8 million yuan, driven by demand for its services in Indonesia, West Africa and the Middle East.
COSL had an office in Kuala Lumpur, Malaysia briefly in the early 2000s when it had its first western Vice President, Alan Good, a British born Oilman who helped launch the company internationally and pushed for further growth in the international sector.
COSL also maintains an office in Houston, TX as COSL America.