| (1)   | China      National Offshore Oil Corporation, a company established and existing      under the laws of the PRC, with registered address situated at No. 25,      Chaoyangmenbei Dajie, Dongcheng District, Beijing, PRC (the      “Licensor”); |
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| (2)   | CNOOC      Limited, a company established and existing under the laws of Hong Kong,      with registered address situated at One Garden Road, Hong Kong, PRC (the      “1st      Licensee”); and |
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| (3)   | CNOOC      China Limited, a company established and existing under the laws of the      PRC, with registered address situated at Petroleum New Village, Tangguh      District, Tianjin PRC (the “2nd      Licensee”). |
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| 1.   | The      Licensor has registered in the PRC a trademark with registration number      1221938 (the “Trademark”), and is the lawful owner of the Trademark      (photocopy of the trademark registration certificates are attached in the      Schedule of this Agreement) and is entitled to use the Trademark and enjoy      the right to license other persons to use the  Trademark; |
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| 2.   | The      1st      Licensee and the 2nd      Licensee (collectively, the “Licensees”) wish to use the Trademark in      their business operations and the Licensor consents to the Licensees using      the Trademark. |
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| 1.   | The      Licensor authorizes the Licensees to use the Trademark in the trademark      registration place in respect of the various services specified by the      Trademark Bureau of the State Administration for Industry and Commerce of      the People's Republic of China. |
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| 2.   | The      1st      Licensee and 2nd      Licensee shall respectively pay to the Licensor trademark royalties of RMB      500 within 30 days after the execution of this  Agreement. |
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| 3.   | The      Licensee shall, while using the Trademarks in situations suitable for      declaration, declare that the Trademark is owned by the      Licensor. |
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| 4.   | Save      with the prior written consent of the Licensor, the Licensees shall not      authorize any third party to use the Trademark (except to their own      subsidiaries). |
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| 5.   | The      Licensor and the Licensees hereby confirm that the license mentioned      herein shall be non-exclusive, non-monopolized, non-geographically      restricted general license, and the Licensor shall still be entitled to      the ownership and right to use of the Trademark during the term of the      license. |
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| 6.   | If      the Licensor proposes to transfer the Trademark to a third party (other      than the Licensor’s subsidiaries), the Licensor shall give a 30-day prior      written notice to the Licensee before the proposed transfer and the      Licensees are entitled to enjoy the pre-emptive right. If the Licensees do      not exercise the pre-emptive right, the Licensor shall ensure this      Agreement shall remain effective after such transfer and such insurance      shall be one of the conditions precedent for such  transfer. |
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| 7.   | The      Licensor and the Licensees shall ensure the quality of any operation or      service in relation to the Trademark in order to maintain the goodwill of      the Trademark. |
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| 8.   | Rights      and Obligations of the Licensor and theLicensee |
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|  | a)  | to      undertake that it shall not make any change on the registration of the      Trademark and it shall maintain the valid registration of the Trademark      and the ownership and control of the Trademark during the term of the      license. Unless the Licensees clearly expresses not to use the Trademark      any longer, the Licensor is obliged before the expiry of the term of the      Trademark to extend the term of the Trademark in time and to ensure that      the Trademark be in a state of lawful registration at all      times. |
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|  | b)  | to      notify the Licensees and to provide the relevant information to the      Licensees if the Licensor registers the Trademark figure in countries or      regions outside the PRC. |
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|  | c)  | to      supervise and inspect the use of the Trademark by the Licensees from time      to time. |
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|  | d)  | to      warrant that there is no and will not be any dispute or litigation or      claim |
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|  |   | arising      from the rights of any third party to use the Trademark within the      territory in which the Trademark is registered which will cause damages or      create legal obstacles to the use of the Trademark by the      Licensees. |
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|  | a)  | to      use the Trademark within the specified period and scope, and to pay the      trademark usage fee within the due date for payment in accordance with      this Agreement. |
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|  | b)  | not      to authorize any third party (except their own subsidiaries) to use the      Trademark without the prior written license of the    Licensor. |
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|  | c)  | to      accept the supervision of the Licensor in respect of the use of the      Trademark and to ensure the quality of the operations and services in      relation to which the Trademark are used to comply with the quality of the      state and/or the relevant ministries, and/or those commonly accepted in      the same industry. |
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| 9.   | Each      party hereto shall forthwith inform the other two parties hereto of any      event of infringement of the Trademark, and upon the receipt of the      notice, the Licensor shall forthwith take legal measures to stop the said      infringing acts, and the Licensees shall assist the Licensor in taking the      aforesaid measures to stop the said infringing  acts. |
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| 10.   | In      the event of any litigation or claim relating to the infringement of the      trademark right of any third party arising from the use of the Trademark      by the Licensees in accordance with the terms and conditions of this      Agreement, the Licensees shall inform the Licensor in time. The Licensor      undertakes to indemnify the Licensees any loss so  incurred. |
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| 11.   | This      Agreement shall come into effect on September 9, 2009 upon the execution      by the authorized representatives of each party hereto and shall remain in      effect for a term of nine (9)years. |
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| 12.   | Unless      otherwise provided by the laws of the PRC, any party shall not be entitled      to vary or terminate this Agreement without the unanimous written consent      of the Licensor and the Licensees. Any party proposing to vary or      terminate this Agreement shall give 6 mouths’ prior written notice to the      other parties, and only upon agreement after negotiations shall this      Agreement be varied or terminated. |
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| 13.   | After      this Agreement comes into effect, the Licensor shall conduct      the |
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|  | registration      and record procedures in accordance with the laws of the PRC and bear the      relevant fees. |
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| 14.   | The      conclusion, validity, implementation and construction of this Agreement      are governed by the laws of thePRC. |
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| 15.   | Disputes      arising from the execution and implementation of this Agreement shall be      settled through friendly consultation. If consultation fails within 60      days after the dispute arises, the competent court of the PRC shall have      exclusive jurisdiction over suchdispute. |
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| 16.   | Any      notice made hereunder by one party to the other parties pursuant to this      Agreement, shall be in writing and delivered to the addresses provided in      this Agreement or such addresses, telex, cable or fax numbers which from      time to time any party notifies the other parties in    writing. |
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| 17.   | Any      matter which is not provided in this Agreement shall be separately      negotiated among the parties and amended in writing. Any amendment shall      be deemed to be an integral part of this Agreement and have the same legal      force as this Agreement. |
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| 18.   | The      Schedule to this Agreement is an integral part of this Agreement and shall      be binding upon the parties. |
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| 19.   | This      Agreement is written and executed in four originals with the equal force      and effect. Three originals shall be delivered respectively to each party      hereto and the fourth original shall be delivered to and filed with the      Trademark Bureau for record. |
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