09:19     CHINA OILFIELD<02883> - Announcement                                

    The Stock Exchange of Hong Kong Limited takes no responsibility           
    for the contents of this announcement, makes no representation            
    as to its accuracy or completeness and expressly disclaims any            
    liability whatsoever for any loss howsoever arising from or in            
    reliance upon the whole or any part of the contents of this               
    announcement.                                                             
                                                                              
    China Oilfield Services Limited                                           
    (incorporated in the People's Republic of China as a joint stock          
    limited liability company)                                                
    (Stock Code: 2883)                                                        
                                                                              
    CLARIFICATION ANNOUNCEMENT                                                
                                                                              
    The Board refers to the Company's announcements dated 1 November          
    2004 and 11 April 2005 respectively.                                      
                                                                              
    The board of directors (the "Board") of China Oilfield Services           
    Limited (the "Company") refers to the Company's announcement              
    dated 1 November 2004 which set out, amongst other things, that           
    State Street Corporation was interested in 86,008,000 H shares            
    (lending pool) in the Company. The Company wishes to clarify              
    that, following the Company's subsequent enquiries with State             
    Street Corporation, State Street Corporation filed a revised              
    notification on 25 January 2005 informing the Company that it             
    ceased to have a notifiable interest in the Company on 10                 
    September 2004 as opposed to what was stated in that                      
    announcement.                                                             
                                                                              
    The Company maintains its register of interests in accordance             
    with the requirements of the Securities and Futures Ordinance             
    (the "SFO") and the company secretarial department of the Company         
    has been delegated the duty to check the accuracy of the                  
    shareholding interests. In order to ensure the accuracy of its            
    record, the Company will check its record against the information         
    set out in the Stock Exchange's website more often on a regular           
    basis. The Company would like to take this opportunity to remind          
    its shareholders that they are required to file notices with              
    the Company under the SFO. To ensure and facilitate the Company's         
    processing of the notices, a proper covering letter together              
    with the duly completed notification form prescribed under the            
    SFO should be sent to the Company's office in Hong Kong at 65th           
    Floor, Bank of China Tower, 1 Garden Road, Hong Kong.                     
                                                                              
    The Board also refers to its announcement dated 11 April 2005             
    and wishes to clarify that the contract amount stated in the              
    Chinese version of the said announcement should be "USD 98.36             
    million" instead of "USD98.63 million". The amount stated in              
    the English version of the announcement is accurate.                      
                                                                              
    By Order of the Board                                                     
    China Oilfield Services Limited                                           
    Chen Weidong                                                              
    Company Secretary                                                         
    Hong Kong, 26 April, 2005                                                 
                                                                              
    As at the date of this announcement, the executive directors              
    of the Company are Mr. Yuan Guangyu and Mr. Wu Mengfei; the               
    non-executive directors are Mr. Fu Chengyu and Mr. Wang Zhongan;          
    and the independent non-executive directors are Mr. Gordon Che            
    Keung Kwong, Mr. Andrew Y. Yan and Mr. Simon X. Jiang.