UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16
of the Securities Exchange Act of 1934

For the month of June 2008

Commission File Number 1-14966


CNOOC Limited
(Translation of registrant’s name into English)
 
65th Floor
Bank of China Tower
One Garden Road
Central, Hong Kong
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

 
Form 20-F  
X
  
Form 40-F  
   

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

 
Yes  
 
  
No  
X
  
 
If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): Not applicable
 
 
Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
   
CNOOC Limited
  
       
                                                                          By:
   
/s/ Kang Xin
  
                                                                     Name:
  
Kang Xin
  
                                                                       Title:
  
Company Secretary
  
Dated: June 27, 2008
      
 
 
EXHIBIT INDEX
 
Exhibit No.
  
Description
     
99.1
  
Press Release dated June 26, 2008, entitled “CNOOC Ltd. Filed 2007 Annual Report on Form 20-F”.