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

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 2)*

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

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

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

                                December 31, 2003
  -----------------------------------------------------------------------------
             (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)
/  /  Rule 13d-1(c)
/X /  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).





 CUSIP NO. 25179M103
--------------------------------------------------------------------------------
1.       Name of Reporting Persons

         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 SHARES             5.     Sole Voting Power
 BENEFICIALLY
 OWNED BY EACH                       8,435,617
 REPORTING                    --------------------------------------------------
 PERSON WITH                  6.     Shared Voting Power

                                     0
                              --------------------------------------------------
                              7.     Sole Dispositive Power

                                     8,435,617
                              --------------------------------------------------
                              8.     Shared Dispositive Power

                                     0
--------------------------------------------------------------------------------
9.       Aggregate Amount Beneficially Owned by Each Reporting Person
         8,435,617
--------------------------------------------------------------------------------
10.      Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares
         (See Instructions)                                                 /  /
--------------------------------------------------------------------------------
11.      Percent of Class Represented by Amount in Row (9)

         3.6%  (Based  on  232,557,000  shares  outstanding  as set forth in the
         Issuer's 10-Q for the quarterly period ended September 30, 2003)
--------------------------------------------------------------------------------
12.      Type of Reporting Person (See Instructions)

         HC
--------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP NO. 25179M103
--------------------------------------------------------------------------------
1.       Name of Reporting Persons

         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 SHARES              5.     Sole Voting Power
BENEFICIALLY
OWNED BY EACH                        8,435,617
REPORTING                     --------------------------------------------------
PERSON WITH                   6.     Shared Voting Power

                                     0
                              --------------------------------------------------
                              7.     Sole Dispositive Power

                                     8,435,617
                              --------------------------------------------------
                              8.     Shared Dispositive Power

                                     0
--------------------------------------------------------------------------------
9.       Aggregate Amount Beneficially Owned by Each Reporting Person
         8,435,617
--------------------------------------------------------------------------------
10.      Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares
         (See Instructions)                                                 /  /
--------------------------------------------------------------------------------
11.      Percent of Class Represented by Amount in Row (9)

         3.6%  (Based  on  232,557,000  shares  outstanding  as set forth in the
         Issuer's 10-Q for the quarterly period ended September 30, 2003)
--------------------------------------------------------------------------------
12.      Type of Reporting Person (See Instructions)

         CO
--------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP NO. 25179M103
--------------------------------------------------------------------------------
1.       Name of Reporting Persons

         KM Investment Corporation
--------------------------------------------------------------------------------
2.       Check the Appropriate Box if a Member of a Group              (a)  /  /
                                                                       (b)  /  /
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       Citizenship or Place of Organization

         Nevada
--------------------------------------------------------------------------------
NUMBER OF SHARES              5.     Sole Voting Power
BENEFICIALLY
OWNED BY EACH                        8,435,617
REPORTING                     --------------------------------------------------
PERSON WITH                   6.     Shared Voting Power

                                     0
                              --------------------------------------------------
                              7.     Sole Dispositive Power

                                     8,435,617
                              --------------------------------------------------
                              8.     Shared Dispositive Power

                                     0
--------------------------------------------------------------------------------
9.       Aggregate Amount Beneficially Owned by Each Reporting Person
         8,435,617
--------------------------------------------------------------------------------
10.      Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares
         (See Instructions)                                                 /  /
--------------------------------------------------------------------------------
11.      Percent of Class Represented by Amount in Row (9)

         3.6%  (Based  on  232,557,000  shares  outstanding  as set forth in the
         Issuer's 10-Q for the quarterly period ended September 30, 2003)
--------------------------------------------------------------------------------
12.      Type of Reporting Person (See Instructions)
         CO
--------------------------------------------------------------------------------





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
         Oklahoma City, Oklahoma 73102

ITEM 2.

      (a) NAME OF PERSON FILING
          Kerr-McGee Corporation, Kerr-McGee Worldwide Corporation, and KM
          Investment 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  and  Kerr-McGee  Worldwide  Corporation  were
          organized or formed and exist under the laws of the State of Delaware.
          KM Investment  Corporation  was organized and exists under the laws of
          the State of Nevada.

      (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)
               (E).
     (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).
     (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.

         (a) Amount beneficially owned: 8,435,617

         (b) Percent of class: 3.6%

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

                  (i) Sole power to vote or to direct the vote: 8,435,617

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

                  (iii)    Sole power to dispose or to direct the disposition
                           of: 8,435,617

                  (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].

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

KM  Investment  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.

                                    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:  February 9, 2004

                                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

                                KM INVESTMENT CORPORATION


                                By:      /s/ Darrell E. Hollek
                                         ---------------------------------------
                                Name:    Darrell E. Hollek
                                Title:   President

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).




Exhibit 1

                             JOINT FILING AGREEMENT

     Kerr-McGee  Corporation,  a  Delaware  corporation,   Kerr-McGee  Worldwide
Corporation,  a Delaware corporation,  and KM Investment  Corporation,  a Nevada
corporation,  each hereby  agrees,  in accordance  with Rule 13d-1(k)  under the
Securities  Exchange Act of 1934, that the Amendment No. 2 on Schedule 13G filed
herewith,  and any amendments  thereto,  relating to the shares of common stock,
par value $0.10,  of Devon Energy  Corporation is, and will be, jointly filed on
behalf of each such person and further agree that this Joint Filing Agreement be
included  as an  exhibit  to  such  joint  filings.  In  evidence  thereof,  the
undersigned hereby execute this Agreement as of the date set forth below.

Dated: February 9, 2004

                                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


                                KM INVESTMENT CORPORATION


                                By:      /s/ Darrell E. Hollek
                                         ---------------------------------------
                                Name:    Darrell E. Hollek
                                Title:   President