Offshore Jobs at China Oilfield Services

Offshore Jobs at China Oilfield Services

Posted on Posted in hiring

China Oilfield Services (COSL) is a mining and metal company based in Langfang. It is a subsidiary of the Chinese state company CNOOC Group. It buys offshore vessels (OSV) and uses them in Southeast Asia, the Middle East and Central Asia, in its offshore CNOOC projects. It also operates in Indonesia, Malaysia, and the Caspian Sea. The company is divided into four categories: 


  • Geophysical exploration servicesa
  • Drilling services
  • Technical services on Oil fields 
  • Shipping services


COSL enjoys major market shares in the following markets:

  • 95% of China’s offshore drilling services market.
  • 70% of the shipping support and transport market.
  • 60% of the Well survey services market.
  • 50% of the seismic data collection market.


Following are some important facts about the company:


Headquarters: Beijing, China

Annual Revenue: 21,886.6 Million Pound sterling 

Number of Employees: Approx. 10000




  • In 1982 the Council of Ministers approved China’s national Oil company Offshore Oil Corporation as a national Oil company and had the exclusive right to cooperate in the exploitation of Oil and Gas Activities in the Chinese seas.
  • In 2001 China National Offshore Oil Corporation merged five companies involved in drilling, Oil well services, and Oil geophysical exploration into China Oilfield Services.
  • The China National Offshore Oil Corporation merged two shipping and resupply companies. It merged CNOOC Southern Ship Co. and Northern Ship Co. Ltd. into one company.
  • In 2002 Zhonghai Oilfield Service Company officially registered as a limited liability company by shares.
  • Zhonghai Oilfield Services Co. was successfully listed in Hong Kong.
  • In 2004 the shares of China Oilfield Services Co., Ltd. started trading on the New York Stock Exchange in the form of first-rate U.S. certificates of deposit. In 2007 China Oilfield Services Co. Ltd. was listed on the Shanghai Stock Exchange.
  • In 2008 China Oilfield Services Co., Ltd. successfully acquired Awilco Offshore ASA
  • China Oilfield publicly issued H shares on November 20 and was listed on the Hong Kong Stock Exchange.
  • COSL was listed on the Shanghai Stock Exchange on September 28. 


Services provided by the company:


COSL has teams of outstanding experts, drilling supervisors and technicians who have many years of experience in the field, which can provide strong technical support and guarantee integrated services. List of its services include:


  • Budget planning
  • Organization
  • Implementation
  • Drilling platform towing
  • Positioning 
  • Completion fluids
  • Logging 
  • Directional wells
  • Cementing 
  • Production increase
  • Testing
  • Coring 
  • ROV
  • Salvage
  • Material transportation
  • Platform guarding
  • Staff shift
  • Oil spill response
  • Waste disposal
  • Etc.

COSL integrates its services with the following companies for CNOOC:


  • PetroChina
  • Sinopec
  • Danwen Energy
  • British Super standard
  • Eni 
  • Husky &
  • Rock Oil


Types of Rigs the company specializes in:


    • Offshore drilling platform rig
    • Marine module drilling rig
    • Land rig


Other Main Operations and Equipment:


It mainly operates and manages the following:

  • 57 drilling equipment
  • 12 semi-submersible drilling platforms
  • 3 living platforms
  • 6 sets of modular drilling rigs
  • 430 sets of advanced logging
    • Mud
    • Directional wells
    • Cementing and Workover
    • Logging while Drilling
    • Rotary steering

COSL service area covers Chinese waters and extends to six regions in the Asia Pacific, the Middle East, America, Europe, Africa, and the Far East. It works in more than 40 countries and regions of the world. It participated in marine engineering studies and completed studies of more than 240 offshore Oil and Gas field development projects, and examined more than 1,700 well sites.