Exhibit
23.3
Consent
As
independent oil and gas consultants, Ryder Scott Company, L.P.
hereby consents to (i) all references to our firm included in or made a part of
the Kerr-McGee Corporation Annual Report on Form 10-K to be filed with the
Securities and Exchange Commission on or about March 11, 2005 (“Form 10-K”) and
(ii) the incorporation by reference in the Registration Statements on Form S-8
(File Nos. 333-66436,
333-66438, 333-66440, 333-66442, 333-89558, 333-41008, 333-41006, 333-41000,
333-39222, 333-92865, 333-05999, 33-50949, 33-24274 and 333-116950)
and Form S-3 (File Nos. 333-81720,
333-115935 and 333-68136) of Kerr-McGee Corporation of such references in the
Form 10-K.
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/s/
Ryder Scott Company, L.P.
RYDER
SCOTT COMPANY, L.P.
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March
10, 2005