COSL Will Announce 2006 Annual Results on 23 March 2007

(13 March 2007 - Hong Kong) China Oilfield Services Limited ( COSL or the Company ; stock code: 2883) will announce its 2006 annual results on 23 March 2007 (Friday). An analyst presentation as well as a press conference will be held in Hong Kong on 26 March 2007 (Monday).

Date: 26 March 2007 (Mon)

Time: 10:30 am

Venue: Harbour Room, level 56,

Island Shangri-la Hong Kong,

Pacific Place, Admiralty, Hong Kong

Date: 26 March 2007 (Mon)

Time: 11:30 am

Venue: same as above

Formal invitations will be sent out the week before the results announcement date. Presentation materials and press releases will be distributed during the press conference and investor presentation, and will be available for download in the Company website www.cosl.com.cn on the same day. Webcast of the analyst presentation could also be downloaded through the website from 26 March (Mon) onwards.

For further enquires, please contact:

iPR Ogilvy Ltd

Natalie Tam/Antonia Au/ Katie Tsui/ Jackal Leung

Tel: 2136 6182/ 2136 6176/ 2136 6955/ 2169 0467

Fax: 3170 6606