20th Anniversary of COSL to Provide Services in Tarim, Xinjiang

(11 October, 2006) China Oilfield Services Limited ( COSL or the Company , stock code: 2883HK) announced that 2006 marks the 20th anniversary of COSL to enter the XinjiangAtonomous Region to provide services in Tarim. On this memorable time, Mr. Li Yong, COO & EVP of the Company, Mr. Tang Daizhi, VP of Company gathered in KuErLe to attend the celebration of The 20th Anniversary of COSL to Enter Xinjiang .

In the past 20 years, Many COSL s employees devoted their time, effort and even lives in providing quality services to the Tarim s oil services business, which won the trust and support from the local oil company as a result.

As the Tarim region become more accessible to the world, COSL will have more operating opportunities in this vast inland oilfield market. COSL will continue to enhance the Company Mission of We Must Do Better , and make fruitful and adequate contributions to the robust development of the Tarim Oilfields.