EXHIBIT 99.1


                            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 Weatherford International Ltd.
(the "Company") on Form 10-K/A for the period ended December 31, 2002 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
I, Bernard J. Duroc-Danner, Chief Executive Officer of the Company, certify,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

     (1)  The Report fully complies with the requirements of Section 13 (a) or
          15 (d) 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 result of operations of
          the Company.


/s/ BERNARD J. DUROC-DANNER
- -----------------------------------------------------
Name:    Bernard J. Duroc-Danner
Title:   Chief Executive Officer, Chairman of the
         Board and Director
Date:    June 26, 2003