EXHIBIT 4
                                                                      ---------

                                 CERTIFICATION

                     CERTIFICATION REQUIRED 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, 2006 as
filed with the  Securities  and  Exchange  Commission  on the date  hereof (the
"Report"), I, Steve W. Laut, pursuant to 18 U.S.C. 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 28th day of March, 2007.



/s/ Steve W. Laut
-----------------------------------
Steve W. Laut
President and Chief Operating Officer (Principal Executive Officer),
Canadian Natural Resources Limited