Company Profile

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.

  • In2002
    November 20, 2002: China Oilfield Services Limited was listed as stock code 2883.HK on the main board of the Hong Kong Stock Exchange
  • In2004
    March 26, 2004: China Oilfield Services Limited, stock code CHOLY, was authorized for trading via Level I Unlisted American Depositary
  • In2007
    September 28, 2007: China Oilfield Services Limited was listed on the Shanghai Stock Exchange as stock code: 601808.SS