6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OFFOREIGN ISSUER

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of July 2022

Commission File Number: 001-15006

PETROCHINA COMPANY LIMITED

9 DongzhimenNorth Street, Dongcheng District

Beijing, The People’s Republic of China, 100007

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

Yes  ☐    No  ☒

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3 2(b): 82—                )

EXHIBITS

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this announcement to be signed on its behalf by the undersigned, thereunto duly authorized.

EX-99.1

Exhibit 99.1

Hong Kong Exchange and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make norepresentation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any of the contents of this announcement.

中國石油天然氣股份有限公司

PETROCHINA COMPANY LIMITED

(a joint stock limited company incorporated in the People’s Republic of China with limited liability)

(Stock Code: 857)

OVERSEAS REGULATORY ANNOUNCEMENT

ANNOUNCEMENT REGARDING THE PROPOSED RELEASE OF THE

REGISTRATION OF PLEDGE AND TRUST FOR THE EXCHANGEABLE

CORPORATE BONDS BY THE CONTROLLING SHAREHOLDER

This announcement is made pursuant to Part XIVA of the Securities and Futures Ordinance and Rules 13.09(2)(a) and 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

PetroChina Company Limited (the “Company”) recently received a notification from China National Petroleum Corporation (“CNPC”), the controlling shareholder of the Company, informing the Company that CNPC had completed the delisting of the exchangeable corporate bonds issued in 2017 (the “17 CNPC EB”) and proposed to go through the procedures for the release of pledge and trust registration of the above-mentioned exchangeable corporate bonds at Shanghai Branch of China Securities Depository and Clearing Corporation Limited recently. Details are as follows:

CNPC completed the public issuance of exchangeable corporate bonds in 2017, in which a part of the A shares of the Company held by CNPC are used as the underlying shares. The issuance amount of the exchangeable corporate bonds was RMB10 billion with a term of five years and 2,061,000,000 underlying shares of the Company held by CNPC was transferred into CNPC-CSC-17 CNPC EB Pledge and Trust Special Account (the “17 CNPC EB SpecialAccount”).

Whereas CNPC has completed the redemption and delisting of the exchangeable corporate bonds above, CNPC and CSC Financial Co., Ltd., the trustee of the 17 CNPC EB, proposed to apply to transfer the remaining unexchanged 2,051,487,972 underlying shares of the Company in the 17 CNPC EB Special Account to the security account of CNPC.

As at the date of this announcement, CNPC held 146,882,339,136 shares^1^ of the Company, representing 80.25% of the total issued share capital of the Company; and 17 CNPC EB Special Account held 2,051,487,972 shares of the Company, representing 1.12% of the total issued share capital of the Company. Upon the completion of the procedures to release the registration of pledge and trust, the 2,051,487,972 shares of the Company in the 17 CNPC EB Special Account will be transferred to the security account of CNPC, and 17 CNPC EB Special Account will not hold any share of the Company while CNPC will held 148,933,827,108 shares of the Company, representing 81.38% of the total issued share capital of the Company. Following the completion of the procedure to release the registration of pledge and trust by CNPC, there will be no change in the controlling shareholder and the de facto controller of the Company.

The Company will pay ongoing attention to the progress of the release of the registration of pledge and trust by CNPC, and fulfill its duty to disclose information in a timely manner in accordance with the relevant regulatory requirements strictly.

Beijing, China

21 July 2022

As at the date of this announcement, the Board comprises Mr. Dai Houliang as Chairman; Mr. Hou Qijun as Vice Chairman and non-executive Director; Mr. Duan Liangwei and Mr. Xie Jun as non-executive Directors; Mr. Jiao Fangzheng, Mr. Huang Yongzhang and Mr. Ren Lixin asexecutive Directors; and Ms. Elsie Leung Oi-sie, Mr. Tokuchi Tatsuhito, Mr. Cai Jinyong and Mr. Jiang, Simon X. as independent non-executive Directors.