CNOOC Oilfield Services Co., Ltd

China Oilfield Services Limited (COSL) is a large-scale integrated oilfield service provider in Asia. The service runs through all stages of offshore oil and gas exploration, development and production. Business is divided into four categories: geophysical prospecting services, drilling services, oilfield technical services and shipping services.

There are 13 geophysical exploration ships, 52 drilling equipment (including 33 jack up drilling platforms, 12 semi submersible drilling platforms, 2 living platforms and 5 modular drilling rigs), more than 130 offshore working ships, and more than 430 sets of well logging, mud, directional well, cementing and workover equipment independently developed.

COSL can not only provide customers with single business operation service, but also provide customers with integrated overall contracting operation service. The company's service area covers China's waters, and extends to Southeast Asia, the Middle East, America, Europe, Africa and the Far East, covering more than 30 countries and regions in the world.