COSL

China Oilfield Services Limited (COSL) is the leading integrated oilfield services providers in the Asian offshore market. COSL’s four main services divisions—Geophysical Services, Drilling Services, Well Services, and Marine and Transportation Services—cover the exploration, development, and production phases of the oil and gas industry.

COSL has the largest and most diverse offshore oilfield services facilities in China. COSL's services not only cover offshore China and the Asia-Pacific regions, but also extend internationally to the Southeast Asia, the Middle East, the Americas, and Europe, the Africa and touch more than forty countries and areas around the world.