COSL Interim Results 2008 Analyst Presentation(33133)

China Oilfield Services Limited ( COSL or the Company , HKSE stock code: 2883, SSE stock code: 601808) cordially invites you or your representative to an analyst presentation to be held on 29 August, 2008 (Friday) in respect of the Company s interim results 2008.

COSL is the leading integrated oilfield services provider in the offshore China market. Its services cover each phase of offshore oil and gas exploration, development and production. Its four core business segments are drilling services, well services, marine support and transportation services and geophysical services.

COSL has been listed on the Main Board of the Stock Exchange of Hong Kong Limited since 20 November, 2002 under the ticker 2883. Since 26 March, 2004, COSL's stocks can be traded by means of Level I unlisted American Depositary Receipts at OTC (over-the-counter) market in the United States under the ticker CHOLY.

COSL listed its A shares on Shanghai Stock Exchange under the ticker 601808 since 28 September, 2007.

At the analyst presentation, senior management of COSL will discuss the Company s 2008 interim results as well as its latest business development and future strategies.

Details of the presentation are as follows:

Date : 29 August, 2008 (Friday)
Time : 2:00 p.m.
Venue : Harcourt Room, Lower Lobby,
Conrad Hong KongPacific Place, 88 Queensway, Hong Kong

* Consecutive interpretation to both Mandarin and English will be provided during the Q&A session.

For confirmation, please fill in the attached reply slip and fax it to Ivy Wong/ Summer Si of iPR Ogilvy Ltd at (852) 3170 6606 or (852) 2136 6068. For immediate enquiries, please call (852) 2136 6185.

REPLY SLIP

Please fill in the form below and fax to Ivy Wong / Summer Si of iPR Ogilvy Ltd. at (852) 3170 6606.

Yes. I will attend the presentation on 29 August, 2008 (Friday).

No. I will not attend.

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