China Oilfield Services Limited — Proxy Solicitation & Information Statement 2011

Jan 21, 2011

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(Incorporated in the People’s Republic of China as a joint stock limited liability company)

(Stock code: 2883)

Reply Slip for Extraordinary General Meeting

I(We)of(address),telephone number:and fax number:,being the holder(s) ofH Share(s)/Domestic Share(s)* ofChina Oilfield Services Limited (the “Company”) hereby confirm that I(We) wish to attend or appoint aproxy to attend (on my(our) behalf) the Extraordinary General Meeting (“EGM”) to be held on 8 March2011 (Tuesday) at 3:00 p.m. (Beijing time) at Room 504, CNOOC Plaza, 25 Chaoyangmen North Avenue,Dongcheng District, Beijing, the PRC.					of,
				and fax number:	,

Signature:

Date: 2011

Note: Shareholders who intend to attend the EGM must complete and return the written replies for attending the EGM to the Company’s registered office by facsimile or post no later than 15 February 2011 (Tuesday): Address: 65/F., Bank of China Tower 1 Garden Road, Hong Kong Tel: (852) 2213 2515 Fax: (852) 2525 9322

* Please delete as appropriate