SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

EnLink Midstream Partners, LP

(Name of Issuer)

Common Units

(Title of Class of Securities)

29336U 10 7

(CUSIP Number)

Lyndon C. Taylor

Executive Vice President and General Counsel

Devon Energy Corporation

333 W. Sheridan Ave.

Oklahoma City, OK 73102-5010

Tel: (405) 235-3611

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 7, 2014

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box:   ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See

§240.13d-7 for other parties to whom copies are to be sent.

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).

(Continued on following pages)

Common Unit CUSIP No. 29336U 10 7

2

Common Unit CUSIP No. 29336U 10 7

3

Common Unit CUSIP No. 29336U 10 7

4

Common Unit CUSIP No. 29336U 10 7

5

Common Unit CUSIP No. 29336U 10 7

6

Common Unit CUSIP No. 29336U 10 7

7

Common Unit CUSIP No. 29336U 10 7

8

Common Unit CUSIP No. 29336U 10 7

9

Common Unit CUSIP No. 29336U 10 7

10

SCHEDULE 13D

This Schedule 13D (“Schedule 13D”) relates to the Common Units of EnLink MLP. The address of the principal executive offices of the Issuer is 2501 Cedar Springs Rd., Dallas, Texas 75201.

(a) This Schedule 13D is being filed by:

Devon is a public company and owns 100% of the outstanding common stock of Devon OK. Devon OK owns 100% of the common stock of Devon Gas. Devon Gas owns (i) 100% of the limited partner interests of Devon Gas Services, (ii) 100% of the outstanding common stock of Devon Gas Operating, the general partner of Devon Gas Services and (iii) 100% of the outstanding common stock of Southwestern Gas. Devon Gas Services owns 70.4% of the limited liability company interests of EnLink Midstream and 100% of the limited liability company interests of EnLink Midstream Manager, the managing member of EnLink Midstream. EnLink Midstream owns 100% of the outstanding common stock of Crosstex. Crosstex owns 7.2% of the limited partner interests of EnLink MLP and all of the limited liability company interests of EnLink Midstream GP, LLC, a Delaware limited liability company and the general partner of EnLink MLP (the “General Partner”). The General Partner owns (i) the incentive distribution rights and (ii) the approximately 0.7% general partner interest in EnLink MLP.

(b) The address of the principal executive offices of the Reporting Persons is 333 West Sheridan Avenue, Oklahoma City, Oklahoma, 73102.

(c) The principal business of:

11

In accordance with the provisions of General Instruction C to Schedule 13D, certain information concerning the executive officers, directors and partners of the Reporting Persons, as applicable, and persons controlling the Reporting Persons, as applicable (collectively, the “Covered Persons”), required by Item 2 of Schedule 13D is provided on Appendix A.

(d) During the last five years, no Reporting Persons nor any person named on Appendix A attached hereto has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) During the last five years, no Reporting Persons nor any person named on Appendix A attached hereto has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or a finding of any violation with respect to such laws.

(f) Devon, Devon Gas, Devon Gas Operating and Crosstex are each a Delaware corporation. Devon OK is an Oklahoma corporation. Southwestern Gas is a Texas corporation. Devon Gas Services is a Texas limited partnership. EnLink Midstream Manager and EnLink Midstream are each a Delaware limited liability company. All of the persons named on Appendix A attached hereto, other than Mr. Michael M. Kanovsky, are United States citizens. Mr. Kanovsky is a citizen of Canada.

On March 7, 2014, Devon completed the previously announced combination of substantially all of its U.S. midstream business with Crosstex and EnLink MLP pursuant to (i) a Contribution Agreement, dated October 21, 2013 (the “Contribution Agreement”), among Devon, Devon Gas Services, Devon Gas, Southwestern Gas, EnLink MLP and Crosstex Energy Services, L.P., a Delaware limited partnership and a wholly-owned subsidiary of EnLink MLP (“Crosstex Energy Services”), and (ii) a Merger Agreement (as such term is defined in the Contribution Agreement).

On March 7, 2014, pursuant to the terms of the Contribution Agreement, Devon Gas Services contributed to Crosstex Energy Services 100% of the outstanding membership interests in EnLink Midstream Holdings GP, LLC, a Delaware limited liability company and an indirect wholly-owned subsidiary of Devon and, together with Southwestern Gas, a 50% limited partner interest in EnLink Midstream Holdings, LP, a Delaware limited partnership and an indirect wholly-owned subsidiary of Devon (“EnLink Midstream Holdings”) (the “Contribution”). In exchange for the contributions, EnLink MLP issued to Devon Gas Services and Southwestern Gas consideration of 120,542,441 Class B Units in reliance upon an exemption from the registration requirements of the Securities Act, under Section 4(2) of the Securities Act.

EnLink Midstream Holdings is an entity formed by Devon to hold substantially all of its U.S. midstream business and be combined with the business of EnLink MLP and its affiliates in connection with the Contribution and related transactions.

References to, and descriptions of, the Contribution and the Contribution Agreement as set forth herein are qualified in their entirety by reference to the copy of the Contribution Agreement included as Exhibit 1 to this Schedule 13D, and such agreement is incorporated by reference herein in its entirety where such references and descriptions appear.

12

The information set forth or incorporated in Item 3 and Item 6 are incorporated herein by reference.

The Reporting Persons acquired the units reported herein solely for investment purposes as partial consideration for the Contribution. The Reporting Persons may make additional purchases of Common Units either in the open market or in private transactions depending on the Reporting Person’s business, prospects and financial condition, the market for the Common Units, general economic conditions, stock market conditions and other future developments.

Crosstex, which was not affiliated with Devon prior to the consummation of the Contribution, previously acquired the 16,414,830 Common Units held of record by Crosstex for the purposes and on the terms and conditions more fully described in the Amendment No. 2 to the EnLink MLP Schedule 13G filed with the Securities and Exchange Commission on March 18, 2013.

(a) The Class B Units held by the Reporting Persons will automatically convert into Common Units on a one-to-one basis on the first business day following the record date for the distribution payable with respect to the quarter ending March 31, 2014.

(b) None.

(c) None.

(d) In anticipation of the Contribution Closing (as defined in the Contribution Agreement), on March 6, 2014, Rhys J. Best, Bryan H. Lawrence, Cecil E. Martin, Jr. and Dwight D. Scott each tendered his resignation from the Board of Directors (the “Board”) of the General Partner effective as of the Contribution Closing. Those resignations did not result from a disagreement with the General Partner. Barry E. Davis, Leldon E. Echols and Kyle D. Vann will continue to serve on the Board. Additionally, on March 7, 2014, in its capacity as the sole member of the General Partner and pursuant to the Amended GP LLC Agreement (as defined below), Crosstex increased the size of the Board from seven members to nine members and appointed each of the following additional individuals to the Board: John Richels, Thomas L. Mitchell, David A. Hager, Darryl G. Smette, Mary P. Ricciardello and Scott A. Griffiths. Five of the General Partner’s directors, including John Richels, the chairman of the Board, and Thomas Mitchell, David Hager, Darryl Smette and Mary P. Ricciardello, are officers or directors of Devon and may have conflicts of interest. Additionally, the following persons were appointed or reappointed as executive officers of the General Partner: (i) Barry E. Davis (President and Chief Executive Officer), (ii) Joe A. Davis (Executive Vice President, General Counsel and Secretary), (iii) Michael J. Garberding as Executive Vice President and Chief Financial Officer of the General Partner, (iv) Steve J. Hoppe (Executive Vice President and President of Gas Gathering, Processing and Transmission) and (v) McMillan (Mac) Hummel (Executive Vice President and President of Natural Gas Liquids and Crude). Effective March 7, 2014, William W. Davis resigned from the position of Executive Vice President and Chief Operating Officer. Through its control of EnLink Midstream, the holder of 100% of the equity interests of Crosstex, which owns 100% of the equity interest in the General Partner, EnLink Midstream Manager, a wholly owned subsidiary of Devon, will have the ability to elect all the members of the Board of the General Partner. The Reporting Persons, however, have no current intention of changing the board of directors or management of the General Partner.

(e) The Reporting Persons, as indirect owners of the General Partner of the Issuer, may cause the Issuer to change its dividend policy or its capitalization, through the issuance of debt or equity securities, from time to time in the future. The Reporting Persons, however, have no current intention of changing the present capitalization or dividend policy of the Issuer.

(f) None.

13

(g) Effective March 7, 2014, the General Partner changed its name from Crosstex Energy GP, LLC to EnLink Midstream GP, LLC (the “General Partner Name Change”). The General Partner filed a Certificate of Amendment to its Certificate of Formation (the “GP Certificate Amendment”) with the Delaware Secretary of State, and Crosstex, as the sole member of the General Partner, executed the Second Amended and Restated Limited Liability Company Agreement (the “Amended GP LLC Agreement”) to effect the General Partner Name Change and incorporate other technical updates. Additionally, effective March 7, 2014, EnLink MLP changed its name from Crosstex Energy, L.P. to EnLink Midstream Partners, LP (the “MLP Name Change” and, together with the General Partner Name Change, the “Name Change”). EnLink MLP filed a Second Amendment to its Certificate of Limited MLP (the “MLP Certificate Amendment”) with the Delaware Secretary of State to effect the MLP Name Change and reflect the General Partner Name Change. The General Partner also amended (the “MLP Agreement Amendment”) the Sixth Amended and Restated Agreement of Limited Partnership of EnLink MLP, as amended to date (the “Amended MLP LPA”), to reflect the Name Change and to establish the Class B Units. The Class B Units are substantially similar in all respects to the Common Units, except that they will only be entitled to a pro rata distribution for the fiscal quarter ended March 31, 2014. The Class B Units will automatically convert into Common Units on a one-for-one basis on the first business day following the record date with respect to the distribution for the quarter ended March 31, 2014.

Each of the GP Certificate Amendment, Amended GP LLC Agreement, MLP Certificate Amendment and MLP Agreement Amendment are incorporated in their entirety in this Item 4. References to, and descriptions of, the GP Certificate Amendment, Amended GP LLC Agreement, MLP Certificate Amendment and MLP Agreement Amendment as set forth herein are qualified in their entirety by reference to the copies of the GP Certificate Amendment, Amended GP LLC Agreement, MLP Certificate Amendment and MLP Agreement Amendment included as Exhibits 2 through 5 respectively, to this Schedule 13D, and such agreement is incorporated by reference herein in its entirety where such references and descriptions appear.

(h) In connection with the Contributions, EnLink MLP delisted its Common Units from the NASDAQ and listed its Common Units on the New York Stock Exchange (“NYSE”). EnLink MLP’s trading symbol for its Common Units changed to “ENLK” in connection with the commencement of trading upon the NYSE on March 10, 2014.

(i) None.

(j) None.

Except as set forth in this Schedule 13D and the Contribution Agreement, the Reporting Persons have no present plans which relate to or would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D. The Reporting Persons may change their plans or proposals in the future. In determining from time to time whether to sell the Common Units reported as beneficially owned in this statement (and in what amounts) or to retain such securities, the Reporting Persons will take into consideration such factors as they deem relevant, including the business and prospects of the Issuer, anticipated future developments concerning the Issuer, existing and anticipated market conditions from time to time, general economic conditions, regulatory matters and other opportunities available to the Reporting Persons. The Reporting Persons reserve the right to acquire additional securities of the Issuer in the open market, in privately negotiated transactions (which may be with the Issuer or with third parties) or otherwise, to dispose of all or a portion of their holdings of securities of the Issuer or to change their intention with respect to any or all of the matters referred to in this Item 4.

(a) – (b) The aggregate number and percentage of shares of units beneficially owned by the Reporting Persons (on the basis of a total of approximately 229,546,461 Common Units and Class B Units of the Issuer issued and outstanding as of March 7, 2014) are as follows:

Devon

14

Devon OK

Devon Gas

Southwestern Gas

Devon Gas Operating

Devon Gas Services

EnLink Midstream Manager

EnLink Midstream

Crosstex

15

To the knowledge of the Reporting Persons, no executive officer or manager of the Reporting Persons or other party listed on Appendix A has sole or shared beneficial ownership of any Common Units beneficially owned by the Reporting Persons.

(c) There have been no reportable transactions with respect to the Common Units within the last 60 days by the Reporting Persons, except as described in Item 3 above.

(d) To the knowledge of the Reporting Persons, no person, other than the Reporting Persons, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Units described in this Item 5.

(e) Not applicable.

The information set forth or incorporated in Item 4 is incorporated herein by reference.

In connection with the closing of the Contribution, on March 7, 2014, Devon, Devon Gas Services, Southwestern Gas, EnLink MLP and the General Partner, entered into a Unitholder Agreement (the “Unitholder Agreement”). Under the Unitholder Agreement, in certain circumstances, EnLink MLP will be obligated, upon request, to file a registration statement covering the potential sale of Common Units issuable to Devon Gas Services and Southwestern Gas upon the conversion of the Class B Units issued in connection with the Contribution. In addition, the Unitholder Agreement gives Devon Gas Services and Southwestern Gas piggyback registration rights under certain circumstances. The registration rights are transferable to affiliates of Devon Gas Services and Southwestern Gas and, in certain circumstances, to third parties. The Unitholder Agreement also includes provisions dealing with holdback agreements, indemnification and contribution, and allocation of expenses, as well as EnLink MLP’s obligations to provide certain financial and other information to Devon Gas Services and Southwestern Gas.

Under the Amended GP LLC Agreement of the General Partner, Crosstex has the right to elect the members of the Board of the General Partner.

The Amended MLP LPA additionally contains various provisions with respect to the Common Units and Class B Units governing, among other matters, voting, distributions, transfers, the General Partner’s limited call right and allocations of profits and losses to the partners.

References to, and descriptions of, the Unitholder Agreement, the Amended GP LLC Agreement and the Amended MLP LPA as set forth herein are qualified in their entirety by reference to the copies of the Unitholder Agreement, the Amended GP LLC Agreement and the Amended MLP LPA included as Exhibit 12, Exhibit 3 and Exhibits 5 through 11, respectively, to this Schedule 13D, and such agreement is incorporated by reference herein in its entirety where such references and descriptions appear.

16

17

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: March 17, 2014

SIGNATURE PAGE TO

SCHEDULE 13D

SIGNATURE PAGE TO

SCHEDULE 13D

EXHIBIT INDEX

APPENDIX A

DIRECTORS AND EXECUTIVE OFFICERS OF THE REPORTING PERSONS

The following tables set forth the names, positions and present principal occupations or employment and business addresses of the members, directors and executive officers of the Reporting Persons. All the individuals listed below, other than Michael M. Kanovsky are citizens of the United States. Mr. Kanovsky is a citizen of Canada.

Directors and Executive Officers of Devon Energy Corporation

A-1

A-2

Directors and Executive Officers of Devon Energy Corporation (Oklahoma)

A-3

Directors and Executive Officers of Devon Gas Corporation

A-4

Directors and Executive Officers of Southwestern Gas Pipeline, Inc.

A-5

Directors and Executive Officers of Devon Gas Operating, Inc.

A-6

General Partner and Limited Partner of Devon Gas Services, L.P.

The sole general partner of Devon Gas Services, L.P. is Devon Gas Operating, Inc. and the sole limited partner is Devon Gas Corporation. Information regarding the directors and executive officers of each of these entities are listed above.

A-7

Directors and Executive Officers of EnLink Midstream Manager, LLC

A-8

A-9

Directors and Executive Officers of EnLink Midstream, LLC

EnLink Midstream, LLC has no officers or directors and is managed by EnLink Midstream Manager, LLC, its managing member, whose directors and executive officers are listed above.

A-10

Directors and Executive Officers of Crosstex Energy, Inc.

A-11