Announcement Proposed Re-Appointment of Executive Director and Re-Appointment of Independent Non-Executive Director

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(Incorporated in the People’s Republic of China as a joint stock limited liability company) (Stock Code: 2883)

ANNOUNCEMENT PROPOSED RE-APPOINTMENT OF EXECUTIVE DIRECTOR AND RE-APPOINTMENT OF INDEPENDENT NON-EXECUTIVE DIRECTOR

Pursuant to the Company Law of the PRC and the articles of association of the Company, the Board proposed the re-appointment of Mr. Qi Meisheng as an executive director of the Company.

The proposed re-appointment of executive director and re-appointment of independent non- executive director are subject to the approval of the shareholders of the Company by way of ordinary resolution(s) at the 2018 annual general meeting.

PROPOSED RE-APPOINTMENT OF EXECUTIVE DIRECTOR

Pursuant to the Company Law of the PRC and the articles of association of China Oilfield Services Limited (the “Company”), the board of directors (the “Board”) proposed the re-appointment of Mr. Qi Meisheng as an executive director of the Company.

The above mentioned proposed re-appointment of director is subject to the approval of the shareholders of the Company by way of ordinary resolution(s) at the 2018 annual general meeting. If the general meeting considered and approved the above nomination, Mr. Qi Meisheng’s term of office will be three years, and he will continue to serve as the Chairman of the Board and the member of the nomination committee.

PROPOSED RE-APPOINTMENT OF INDEPENDENT NON-EXECUTIVE DIRECTOR

Pursuant to the Company Law of the PRC and the articles of association of the Company, the Board proposed the re-appointment of Mr. Wong Kwai Huen, Albert as an independent non-executive director of the Company. 1 The above mentioned proposed re-appointment of director is subject to the approval of the shareholders of the Company by way of ordinary resolution(s) at the 2018 annual general meeting. If the general meeting considered and approved the above nomination, Mr. Wong Kwai Huen, Albert’s term of office will be three years, and he will continue to serve as the member of the audit committee of the Company, the member of the nomination committee of the Company and the president of the remuneration and assessment committee of the Company.

BACKGROUND OF THE EXECUTIVE DIRECTOR AND INDEPENDENT NON-EXECUTIVE DIRECTOR

Mr. Qi Meisheng

Mr. Qi Meisheng, Chinese, born in 1968, aged 50, who is the chairman of the Board and the executive director of the Company. He graduated from China University of Petroleum (East China) with bachelor degree of drilling engineering and was granted EMBA of CEIBS in 2013. He served variety positions such as Roustabout, Floorman, Derrickman, Assistant Driller, Driller, Toolpusher and Senior Toolpusher in Nanhai West Oil Company and China Offshore Oil Southern Drilling Company from July 1991 to August 2000. From August 2000 to January 2002, he served as Rig Manager of NH2. From January 2002 to December 2004, he served as Rig Manager of NH6. From December 2004 to March 2006, he served as Safety Director of COSL Drilling. From March 2006 to July 2006, he served as Assistant of GM in COSL Drilling. From July 2006 to September 2008, he served as Vice GM of COSL Drilling. From September 2008 to May 2009, he served as Vice GM of COSL Drilling and Director Assistant of CDE. From May 2009 to June 2010, he served as Vice GM of COSL Drilling and CEO of CDE. From June 2010 to December 2013, he served as GM of COSL Drilling. He served as Vice President of COSL from December 2013 to June 2016. From June 2016 to July 2016, he served as CEO and President of COSL. From July 2016 to March 2018, Mr. Qi served as an Executive Director, Chief Executive Officer and President of China Oilfield Services Limited. Since March 2018, Mr. Qi served as Chairman and an Executive Director of COSL. Mr. Qi has over 27 years of experience in the oil and natural gas industry.

Save as disclosed above, Mr. Qi has not held any directorship in other listed companies in the past three years.

Save as disclosed above, Mr. Qi has no relationship with any directors, senior management or substantial or controlling shareholders of the Company. As at the date of this announcement, Mr. Qi does not have any interest in the shares of the Company within the meaning of Part XV of the Securities and Futures Ordinance (Chapter 571 of the laws of Hong Kong).

Subject to the approval at the 2018 annual general meeting, Mr. Qi will enter into a service contract with the Company for a term of three years. Mr. Qi’s annual remuneration will be determined pursuant to the articles of association of the Company, taking into account the recommendations made by the remuneration and assessment committee of the Company and with reference to his duties and responsibilities with the Company.

Save as disclosed above, there is no other information required to be disclosed pursuant to Rule 13.51(2) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited, and the Company is not aware of any other matters that need to be brought to attention of shareholders of the Company. 2 Mr. Wong Kwai Huen, Albert

Mr. Wong Kwai Huen, Albert, China (Hong Kong) by nationality, born in 1951, aged 67, BBS, JP., an Independent Non-Executive Director of COSL. Mr. Wong holds a bachelor of arts degree from The Chinese University of Hong Kong and a bachelor of laws degree from the University of London. Mr. Wong is currently the Independent Non-Executive Director of China International Marine Containers (Group) Ltd., Vinda International Holdings Limited, Hua Hong Semiconductor Limited and NWS Holdings Limited. He had been the managing partner of the China region for 15 years in two international law firms. Prior to that, he worked for the Lands Department, Department of Justice and Legislative Council of the Hong Kong SAR Government for 10 years in total. Mr. Wong was appointed as committee member of the Hong Kong International Airport Authority, Hospital Authority and the Competition Committee from 2011 to 2018 respectively. He was the former chairman of Hong Kong International Arbitration Centre, and is presently one of the deputy chairman of Hong Kong Inland Revenue Board of Review, chairman of Hong Kong Copyright Tribunal, the Director of The Hong Kong Mortgage Corporation Limited, former president of the Law Society of Hong Kong and Inter-Pacific Bar Association. Mr. Wong holds the posts of honorary lecturer, external examiner and professor in the University of Hong Kong, The Chinese University of Hong Kong, City University of Hong Kong and Hong Kong Shue Yan University.

Save as disclosed above, Mr. Wong has not held any directorship in other listed companies in the past three years.

Save as disclosed above, Mr. Wong has no relationship with any directors, senior management or substantial or controlling shareholders of the Company. As at the date of this announcement, Mr. Wong does not have any interest in the shares of the Company within the meaning of Part XV of the Securities and Futures Ordinance (Chapter 571 of the laws of Hong Kong).

Subject to the approval at the 2018 annual general meeting, Mr. Wong will enter into a service contract with the Company for a term of three years. Mr. Wong will receive a director’s fee and remuneration of RMB400,000 per annum (before tax) for his directorship in the Company, which was determined with reference to his duties and responsibilities by the Company.

3 GENERAL

The Company will convene the 2018 annual general meeting to approve the proposed re-appointment of executive director and re-appointment of independent non-executive director of the Company. A circular containing the details of the above proposed re-appointments and a notice of the annual general meeting will be despatched to the shareholders of the Company as soon as practicable.

By Order of the Board China Oilfield Services Limited Jiang Ping Company Secretary

27 March 2019

As at the date of this announcement, the executive directors of the Company are Messrs. Qi Meisheng (Chairman) and Cao Shujie; the non-executive directors of the Company are Messrs. Meng Jun and Zhang Wukui; and the independent non-executive directors of the Company are Messrs. Law Hong Ping, Lawrence, Fong Chung, Mark and Wong Kwai Huen, Albert.