OREANDA-NEWS. April 12, 2011. China Oilfield Services Limited (“COSL” or “the company”)announces that the Company’s wholly-owned subsidiary COSL Drilling Europe AS(“CDE”) has been award the Acknowledgement of Compliance (“AOC”) from the Norwegian Petroleum Safety Authorities (“PSA” )for its accommodation unit COSLRigmar, reported the press-centre of COSL.

This is another important milestone for CDE performing operation of accommodation units. Awarded AOC certificate makes it possible for CDE to take owner the operation of the unit from 1 April 2011 as planned. COSLRigmar will continue to work for ConocoPhillips in Norway on the same area until October 2013. In addition, ConocoPhillips has secured options in the existing contract.

COSL has been awarded two AOCs for both of COSL's accommodation units from PSA during the last 10 months and the company has in addition also applied for an AOC from PSA for our new build drilling unit COSLPioneer.