UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                 SCHEDULE 13G

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                              (AMENDMENT NO. __)*

                           Devon Energy Corporation
 ------------------------------------------------------------------------------
                               (NAME OF ISSUER)

                    Common Stock, par value $.10 per share
 -----------------------------------------------------------------------------
                        (TITLE OF CLASS OF SECURITIES)

                                   25179M103
 ------------------------------------------------------------------------------
                                (CUSIP NUMBER)

                               December 31, 2002
 -----------------------------------------------------------------------------
            (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT)


Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

/  /  Rule 13d-1(b)
/X/   Rule 13d-1(c)
/  /  Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).



                                   1 of 9

CUSIP No.25179M103                  13G                      Page 2 of 9 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Kerr-McGee Corporation

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           9,954,000
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          0
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         9,954,000
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            0
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     9,954,000
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     6.4% (Based on 156,666,000 shares outstanding as set forth in the Issuer's
     10-Q for the quarterly period ended September 30, 2002)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*

     HC

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.25179M103                  13G                      Page 3 of 9 Pages

________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Kerr-McGee Worldwide Corporation

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           9,954,000
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          0
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         9,954,000
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            0
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     9,954,000
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     6.4% (Based on 156,666,000 shares outstanding as set forth in the Issuer's
     10-Q for the quarterly period ended September 30, 2002)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*

     CO

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.25179M103                  13G                      Page 4 of 9 Pages

________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Kerr-McGee Oil & Gas Corporation

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           9,954,000
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          0
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         9,954,000
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            0
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     9,954,000
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     6.4% (Based on 156,666,000 shares outstanding as set forth in the Issuer's
     10-Q for the quarterly period ended September 30, 2002)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*

     CO

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.25179M103                  13G                      Page 5 of 9 Pages

________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Kerr-McGee Chemical Worldwide LLC (as successor to Kerr-McGee Operating
     Corporation)

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          0
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            0
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     0

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     0

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*

     OO

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.25179M103                  13G                      Page 6 of 9 Pages


ITEM 1.

         (a) NAME OF ISSUER
                  Devon Energy Corporation (formerly known as Devon Delaware
                  Corporation)

         (b)      Address of Issuer's Principal Executive Offices 20 N.
                  Broadway, Suite 1500 Oklahoma City, Oklahoma 73102

ITEM 2.

         (a) NAME OF PERSON FILING
                  Kerr-McGee Corporation, Kerr-McGee Worldwide Corporation,
                  Kerr-McGee Oil & Gas Corporation and Kerr-McGee Chemical
                  Worldwide LLC (as successor to Kerr-McGee Operating
                  Corporation)

         (b)      ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
                  123 Robert S. Kerr Avenue
                  Oklahoma City, Oklahoma 73102

         (c)      CITIZENSHIP
                  Kerr-McGee Corporation, Kerr-McGee Worldwide Corporation,
                  Kerr-McGee Oil & Gas Corporation and Kerr-McGee Chemical
                  Worldwide LLC were organized or formed and exist under the
                  laws of the State of Delaware

         (d)      TITLE OF CLASS OF SECURITIES Common Stock, par value $.10
                  per share

         (e)      CUSIP NUMBER 25179M103

 ITEM 3.          If this statement is filed pursuant to Rules 13d-1(b), or
                  13-2(b) or (c), check whether the person filing is a:

     (a) / / Broker or dealer registered under Section 15 of the Act.
     (b) / / Bank as defined in section 3(a)(6) of the Act.
     (c) / / Insurance company as defined in Section 3(a)(19) of the
             Act.
     (d) / / Investment company registered under Section 8 of the Investment
             Company Act.
     (e) / / An investment adviser in accordance with Rule 13d-1(b)(1)(ii)
     (f) / / An employee benefit plan or endowment fund in accordance with
             13d-1(b)(1)(ii)(F).
     (g) / / A parent holding company or control person in accordance with
             13d-1(b)(1)(ii)(G).



CUSIP No.25179M103                  13G                      Page 7 of 9 Pages


     (h) / / A savings association as defined in Section 3(b) of the
             Federal Deposit Insurance Act.
     (i) / / A church plan that is excluded from the definition
             of an investment company under Section 3(c)(14) of the
             Investment Company Act.
     (j) / / Group, in accordance with 13d-1(b)(1)(ii)(J).


ITEM 4.       OWNERSHIP

Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

         (In each case, other than with respect to Kerr-McGee Chemical
Worldwide LLC.)

         (a) Amount beneficially owned: 9,954,000

         (b) Percent of class: 6.4%

         (c) Number of shares as to which the person has:

                  (i)      Sole power to vote or to direct the vote: 9,954,000

                  (ii)     Shared power to vote or to direct the vote: 0

                  (iii)    Sole power to dispose or to direct the disposition
                           of: 9,954,000

                  (iv)     Shared power to dispose or to direct the
                           disposition of: 0

ITEM 5.       OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

If this statement is being filed to report the fact that as of the date hereof
the reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following [X].

The former Kerr-McGee Operating Corporation ("KMOC"), a wholly owned
subsidiary of Kerr-McGee Corporation, owned 9,954,000 shares of the common
stock of the Issuer (the "Shares"). On December 31, 2002, KMOC distributed the
Shares to its direct and wholly-owned subsidiary, Kerr-McGee Oil & Gas
Corporation ("KMOGC"). On the same date KMOC contributed all of the stock of
KMOGC to KMOC's new direct parent, Kerr-McGee Worldwide Corporation, and
accordingly no longer beneficially owned any of the Shares. Subsequently, KMOC
merged with and was succeeded by Kerr-McGee Chemical Worldwide LLC.



CUSIP No.25179M103                  13G                      Page 8 of 9 Pages

ITEM 6.       OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

Not Applicable.


ITEM 7.       IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
              ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
              HOLDING COMPANY

Kerr-McGee Oil & Gas Corporation (a direct, wholly-owned subsidiary of
Kerr-McGee Worldwide Corporation and an indirect, wholly-owned subsidiary of
Kerr-McGee Corporation)

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

Not Applicable.

ITEM 9.       NOTICE OF DISSOLUTION OF GROUP

Not Applicable.

ITEM 10.      CERTIFICATIONS

         By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.



CUSIP No.25179M103                  13G                      Page 9 of 9 Pages

                                   SIGNATURE

    After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete
and correct.

Date:  January 3, 2003

                                KERR-MCGEE CORPORATION


                                By:      /s/ John F. Reichenberger
                                         --------------------------------
                                Name:    John F. Reichenberger
                                Title:   Vice President, Assistant Secretary
                                         and Deputy General Counsel

                                KERR-MCGEE WORLDWIDE CORPORATION


                                By:      /s/ John F. Reichenberger
                                         -------------------------------
                                Name:    John F. Reichenberger
                                Title:   Vice President and Assistant Secretary

                                KERR-MCGEE OIL & GAS CORPORATION


                                By:      /s/ John F. Reichenberger
                                         --------------------------------
                                Name:    John F. Reichenberger
                                Title:   Vice President

                                KERR-MCGEE CHEMICAL WORLDWIDE LLC

                                By:      /s/ John F. Reichenberger
                                         --------------------------------
                                Name:    John F. Reichenberger
                                Title:   Vice President and Assistant Secretary


Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13(d)-7(b) for other
parties for whom copies are to be sent.

Attention:  Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).