EXHIBIT 13.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the Annual Report of PetroChina Company Limited (the
"Company") on Form 20-F for the period ending December 31, 2006, as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), I,
Chen Geng, hereby certify that to the best of my knowledge:

            1. The Report fully complies with the requirements of Section 13(a)
of the Securities Exchange Act of 1934; and

            2. The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company.

Date: May 11, 2007

                                    /s/ Chen Geng
                                    --------------------------------------
                                    Name:  Chen Geng
                                    Title: Chairman of Board of Directors
                                           (performing the functions of Chief
                                           Executive Officer)