SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549



                                    Form 8-K


                                 CURRENT REPORT



                     Pursuant to Section 13 or 15(d) of the

                         Securities Exchange Act of 1934




                                  April 7, 2004
               --------------------------------------------------
               (Date of Report - Date of earliest event reported)





                             KERR-McGEE CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


   Delaware                          1-16619                     73-1612389
--------------              ------------------------        --------------------
  (State of                 (Commission File Number)           (IRS Employer
Incorporation)                                               Identification No.)


           Kerr-McGee Center
        Oklahoma City, Oklahoma                                       73125
----------------------------------------                            ----------
(Address of principal executive offices)                            (Zip Code)



                                 (405) 270-1313
                         -------------------------------
                         (Registrant's telephone number)


Item 9.   Regulation FD Disclosure
               On April 7,  2004,  Kerr-McGee  Corporation  issued  fact  sheets
          regarding the merger with  Westport  Resources  Corporation.  The fact
          sheets are  attached  hereto as an  exhibit  and are  incorporated  by
          reference herein.

Item 7.   Financial Statements, Pro Forma Financial Information and Exhibits

          (c) Exhibits

          99.1 Merger fact sheets

                                   SIGNATURES

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


                                                   KERR-MCGEE CORPORATION


                                           By:     (John M. Rauh)
                                                   -----------------------------
                                                   John M. Rauh
                                                   Vice President and Controller

Dated: April 7, 2004