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Exhibit 23.1

Consent of Independent Registered Public Accounting Firm


We consent to the incorporation by reference in the Registration Statements and related prospectuses:

(1)
Kerr-McGee Performance Share Plan
Kerr-McGee Corporation Executive Deferred Compensation Plan
Form S-8
File No. 333-66436
(2)
Oryx Energy Company 1997 Long Term Incentive Plan
Oryx Energy Company Executive Variable Incentive Plan
Oryx Energy Company Equity and Deferred Compensation Plan for Non-Employee Directors
Form S-8
File No. 333-66438
(3)
Kerr-McGee Corporation Savings Investment Plan
Kerr-McGee Corporation Employee Stock Ownership Plan
HS Resources, Inc. Employee Investment 401(k) and Profit Sharing Plan
Form S-8
File No. 333-66440
(4)
Kerr-McGee Corporation Long Term Incentive Program
Kerr-McGee Corporation 1998 Long Term Incentive Plan
Kerr-McGee Corporation 2000 Long Term Incentive Plan
Form S-8
File No. 333-66442
(5)
Kerr-McGee Corporation 2002 Long Term Incentive Plan
Form S-8
File No. 333-89558
(6)
Oryx Energy Company 1997 Long Term Incentive Plan
Oryx Energy Company Executive Variable Incentive Plan
Oryx Energy Company Equity and Deferred Compensation Plan for Non-Employee Directors
Form S-8
File No. 333-41008
(7)
Kerr-McGee Corporation 2000 Long Term Incentive Plan
Form S-8
File No. 333-41006
(8)
Kerr-McGee Corporation Executive Deferred Compensation Plan
Form S-8
File No. 333-41000
(9)
Kerr-McGee Corporation 1998 Long Term Incentive Plan
Form S-8
File No. 333-39222
(10)
Kerr-McGee Corporation Performance Share Plan
Form S-8
File No. 333-92865
(11)
Kerr-McGee Corporation Long Term Incentive Program
Form S-8
File No. 333-05999
(12)
Kerr-McGee Corporation Long Term Incentive Program
Form S-8
File No. 33-50949
(13)
Kerr-McGee Corporation Long Term Incentive Program
Form S-8
File No. 33-24274
(14)
Westport Resources Corporation 2000 Stock Incentive Plan
Westport Resources Corporation 2000 Directors’ Stock Option Plan
Westport Resources Corporation 2000 Stock Option Plan
Belco Oil & Gas Corp. 1996 Non-Employee Directors’ Stock Option Plan
Belco Oil & Gas Corp. 1996 Stock Incentive Plan
Form S-8
File No. 333-116950
(15)
Kerr-McGee Corporation 2005 Long Term Incentive Plan
Form S-8
File No. 333-126857
(16)
Kerr-McGee Corporation
Form S-3
File No. 333-81720
(17)
Kerr-McGee Corporation
Kerr-McGee Operating Corporation
HS Resources, Inc.
Form S-3
File No. 333-68136
(18)
Kerr-McGee Corporation
Form S-3
File No. 333-115935

of our reports dated March 14, 2006, with respect to the consolidated financial statements and schedule of Kerr-McGee Corporation, Kerr-McGee Corporation management’s assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of Kerr-McGee Corporation included in this Annual Report (Form 10-K) for the year ended December 31, 2005.


                                                                                                         /s/ ERNST & YOUNG LLP

 
   Oklahoma City, Oklahoma
   March 14, 2006