EXHIBIT 7
                                                                       ---------



                                  CERTIFICATION

          Certification required by Rule 13a-14(b) and Section 1350 of
                Chapter 63 of Title 18 of the United States Code

In  connection  with the report of  Canadian  Natural  Resources  Limited.  (the
"Company")  on the Form 40-F for the fiscal  year  ending  December  31, 2004 as
filed with the  Securities  and  Exchange  Commission  on the date  hereof  (the
"Report"),  the undersigned  certifies,  pursuant to 18 U.S.C.  Section 1350, as
adopted pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002, that to the
best of my knowledge:

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 results of operations of the Company.

DATED this 30th day of March, 2005.


SIGNED "John G. Langille"
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John G. Langille
President (Principal Executive Officer),
Canadian Natural Resources Limited