SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A UNDER THE SECURITIES EXCHANGE ACT OF 1934* PLAINS RESOURCES INC. (NAME OF ISSUER) COMMON STOCK, PAR VALUE $0.10 PER SHARE (TITLE OF CLASS OF SECURITIES) 726540503 (CUSIP NUMBER) D. MARTIN PHILLIPS ENCAP INVESTMENTS L.L.C. 1100 LOUISIANA, SUITE 3150 HOUSTON, TEXAS 77002 (713) 659-6100 (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE NOTICES AND COMMUNICATIONS) OCTOBER 22, 2001 (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 which is the subject of this Schedule 13D, and is filing this schedule because of ss.ss. 240.13d-1(e), 240.13d-1(f) or 204.13d-1(g), check the following box. [ ] 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. SCHEDULE 13D CUSIP NO. 726540503 -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) ENCAP INVESTMENTS L.L.C. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) 00 (SEE ITEM 3) -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION EnCap Investments L.L.C. ("EnCap Investments") is a limited liability company organized under the laws of the State of Delaware -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH REPORTING 1,848,728(1) PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER 0 ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 1,848,728(1) -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,848,728(2) -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.9%(3) -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) 00 -------------------------------------------------------------------------------- (1) EnCap Investments L.L.C. may be deemed to have voting and dispositive power with respect to the shares of Common Stock owned by certain affiliates of EnCap Investments L.L.C. See Items 2, 5 and 6. (2) EnCap Investments L.L.C. disclaims any beneficial ownership of the shares owned by such affiliates. (3) Based on 23,314,000 shares issued and outstanding as of October 31, 2001, as reported in the Issuer's 10-Q for the quarter ended September 30, 2001. ITEM 1. SECURITY AND ISSUER. No modification. ITEM 2. IDENTITY AND BACKGROUND. Item 2 is amended and restated in its entirety as follows: (a) - (c) EnCap Investments L.L.C. ("EnCap Investments") is a Delaware limited liability company with its principal business and executive offices located at 1100 Louisiana Street, Suite 3150, Houston, Texas 77002. The principal business of EnCap Investments is engaging in oil and gas related investments. Current information concerning the sole member and managing directors of EnCap Investments is set forth on Schedule I hereto. The sole member of EnCap Investments is El Paso Merchant Energy North America Company ("El Paso Merchant Energy"). El Paso Merchant Energy is a Delaware corporation with its principal business and executive offices located at 1001 Louisiana Street, Houston, Texas 77002. The principal business of El Paso Merchant Energy is a broad range of activities in the energy marketplace, including asset ownership, trading and risk management, and financial services. Current information concerning the controlling person and executive officers and directors of El Paso Merchant Energy is set forth on Schedule I hereto. The controlling person of El Paso Merchant Energy is El Paso Corporation. El Paso Corporation is a Delaware corporation with its principal business and executive offices located at 1001 Louisiana Street, Houston, Texas 77002. The principal business of El Paso Corporation is serving as a holding company for its various subsidiaries, which are engaged in energy and related businesses. Current information concerning the executive officers and directors of El Paso Corporation is set forth on Schedule I hereto. (d)-(f) See Schedule I ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. The following is added to Item 3: On October 8, 2001, the Issuer issued 154 shares of its Common Stock and on October 12, 2001, the Issuer issued 79 of its shares of Common Stock, to an entity which EnCap Investments is the sole general partner of as compensation for services performed by D. Martin Phillips as a director of the Issuer. On October 22, 2001, EnCap Investments and the Issuer executed a Stock Purchase Agreement pursuant to which the Issuer repurchased 998,500 shares of its Common Stock from certain entities controlled by EnCap Investments at a price of $23.50 per share. ITEM 4. PURPOSE OF TRANSACTION. No modification. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. Item 5 is amended and restated in its entirety as follows: (a) EnCap Investments. EnCap Investments may be deemed to be the beneficial owner of 1,848,728 shares of Common Stock owned by certain affiliates of EnCap Investments, by virtue of being the general partner or controlling person of such affiliates. Based on the 23,314,000 shares of Common Stock outstanding as of October 31, 2001, as reported on the Issuer's 10-Q for the quarter ended September 30, 2001, EnCap Investments may be deemed the beneficial owner of approximately 7.9% of the outstanding shares of Common Stock. EnCap Investments disclaims beneficial ownership of the shares of Common Stock owned by its affiliates. El Paso Merchant Energy and El Paso Corporation. Each of El Paso Merchant Energy and El Paso Corporation may be deemed to be the beneficial owner of the shares of Common Stock owned or deemed owned by EnCap Investments (by virtue of being controlling persons of EnCap Investments). El Paso Merchant Energy and El Paso Corporation disclaim beneficial ownership of the shares of Common Stock owned or deemed owned by EnCap Investments. Executive Officers and Directors. Except as otherwise described herein, and to the knowledge of the reporting person, no person listed in Schedule I is the beneficial owner of any shares of Common Stock. (b) EnCap Investments. EnCap Investments shares the power to vote or direct the vote and to dispose or direct the disposition of an additional 1,848,728 shares of Common Stock held by affiliates of EnCap Investments. El Paso Merchant Energy and El Paso Corporation. Each of El Paso Merchant Energy and El Paso Corporation may be deemed to be the beneficial owner of the shares of Common Stock owned or deemed owned by EnCap Investments (by virtue of being controlling persons of EnCap Investments). El Paso Merchant Energy and El Paso Corporation disclaim beneficial ownership of the shares of Common Stock owned or deemed owned by EnCap Investments. Executive Officers and Directors. Except as otherwise described herein, and to the knowledge of the reporting person, no person listed in Schedule I has the power to vote or direct the vote or dispose or direct the disposition of any shares of Common Stock. (c) Except as otherwise described herein or in any Exhibit filed herewith, and to the knowledge of the reporting persons, none of the persons named in response to Paragraph (a) above has affected any transaction in the Common Stock during the past sixty (60) days. (d) Except as otherwise described herein, and to the knowledge of the reporting persons, no person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from sale of, the Common Stock deemed to be beneficially owned by them. (e) Due to an increase in the number of outstanding shares of Common Stock of the Issuer since the date of the Schedule 13D, EnCap Energy Capital Fund III, L.P. and EnCap Energy Capital Fund III-B, L.P. have ceased to be owners of 5% of the Common Stock of the Issuer. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO THE SECURITIES OF THE ISSUER. No modifications ITEM 7. MATERIAL TO BE FILED AS EXHIBITS. Exhibit 10.1 - Stock Purchase Agreement dated October 22, 2001 between Plains Resources Inc. and EnCap Investments L.L.C. SIGNATURES 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: December 7, 2001 ENCAP INVESTMENTS L.L.C. By: /s/ D. Martin Phillips --------------------------------------- D. Martin Phillips, Managing Director SCHEDULE I DIRECTORS, MANAGERS, EXECUTIVE OFFICERS, OR CONTROLLING PERSONS The name, business address, present principal occupation or employment and the name, principal business address of any corporation or other organization in which such employment is conducted, of each of (i) the managing directors of EnCap Investments, (ii) the directors and executive officers of El Paso Merchant Energy, and (iii) the directors and executive officers of El Paso Corporation are set forth below: Name, Principal Business Address of Organization in which Principal Name and Capacity in Which Principal Occupation Business Address Serves Occupation is Conducted ---------------- ------------------ ----------- ------------------------------------ (i) EnCap Investments L.L.C. ------------------------ David B. Miller Managing Director, Managing EnCap Investments L.L.C. 3811 Turtle Creek Blvd. EnCap Investments Director, 3811 Turtle Creek Blvd., Suite 1080 L.L.C. EnCap Investments Suite 1080 Dallas, TX 75219 L.L.C. Dallas, TX 75219 Gary R. Petersen Managing Director, Managing Director, EnCap Investments L.L.C. 1100 Louisiana EnCap Investments EnCap Investments 1100 Louisiana, Suite 3150 Suite 3150 L.L.C. L.L.C. Houston, TX 77002 Houston, TX 77002 D. Martin Phillips Managing Director, Managing Director, EnCap Investments L.L.C. 1100 Louisiana EnCap Investments EnCap Investments 1100 Louisiana, Suite 3150 Suite 3150 L.L.C. L.L.C. Houston, TX 77002 Houston, TX 77002 Robert L. Zorich Managing Director, Managing Director, EnCap Investments L.L.C. 1100 Louisiana EnCap Investments EnCap Investments 1100 Louisiana, Suite 3150 Suite 3150 L.L.C. L.L.C. Houston, Texas 77002 Dallas, TX 77002 Name, Principal Business Address of Organization in which Principal Name and Capacity in Which Principal Occupation Business Address Serves Occupation is Conducted ---------------- ------------------ ----------- ------------------------------------ (ii) El Paso Merchant Energy North America Company --------------------------------------------- Clark C. Smith President and President, El Paso El Paso Merchant Energy 1001 Louisiana Street Director Merchant Energy North America Company Houston, Texas 77002 1001 Louisiana Street Houston, Texas 77002 John B. Holmes, Jr. Chief Operating Chief Operating Officer, El Paso Merchant Energy 1001 Louisiana Street Officer El Paso North America Company Houston, Texas 77002 Merchant Energy 1001 Louisiana Street Houston, Texas 77002 Timothy D. Bourn Vice President and Vice President and El Paso Merchant Energy 1001 Louisiana Street Senior Managing Senior Managing North America Company Houston, Texas 77002 Director Director, El Paso 1001 Louisiana Street Merchant Energy Houston, Texas 77002 Larry W. Kellerman Vice President and Vice President and El Paso Merchant Energy 1001 Louisiana Street Senior Managing Senior Managing North America Company Houston, Texas 77002 Director Director, El Paso 1001 Louisiana Street Merchant Energy Houston, Texas 77002 John L. Harrison Senior Vice Senior Vice President El Paso Merchant Energy 1001 Louisiana Street President and and Chief Financial North America Company Houston, Texas 77002 Chief Financial Officer, El Paso 1001 Louisiana Street Officer Merchant Energy Houston, Texas 77002 El Paso Merchant Energy W. C. Mack North America Company 1001 Louisiana Street Senior Vice Senior Vice President, 1001 Louisiana Street Houston, Texas 77002 President El Paso Merchant Energy Houston, Texas 77002 Grady M. Blakley Senior Vice Senior Vice President, El Paso Merchant Energy 1001 Louisiana Street President El Paso Merchant Energy North America Company Houston, Texas 77002 1001 Louisiana Street Houston, Texas 77002 Ralph Eads Director Executive Vice El Paso Corporation 1001 Louisiana Street President, El Paso 1001 Louisiana Street Houston, Texas 77002 Corporation Houston, Texas 77002 Name, Principal Business Address of Organization in which Principal Name and Capacity in Which Principal Occupation Business Address Serves Occupation is Conducted ---------------- ------------------ ----------- ------------------------------------ (iv) El Paso Corporation ------------------- William A. Wise Chairman of the Director, Chairman of the El Paso Corporation 1001 Louisiana Street Board, Board, 1001 Louisiana Street Houston, Texas 77002 President, Chief President, and Chief Houston, Texas 77002 Executive Executive Officer, and Officer of El Paso Director Corporation H. Brent Austin Executive Vice Executive Vice President El Paso Corporation 1001 Louisiana Street President and 1001 Louisiana Street Houston, Texas 77002 and Chief Financial Officer of Houston, Texas 77002 Chief Financial El Paso Corporation Officer Ralph Eads Executive Vice Executive Vice President El Paso Corporation 1001 Louisiana Street President of 1001 Louisiana Street Houston, Texas 77002 El Paso Corporation Houston, Texas 77002 Joel Richards III Executive Vice Executive Vice President, El Paso Corporation 1001 Louisiana Street President Human 1001 Louisiana Street Houston, Texas 77002 Resources and Houston, Texas 77002 Administration of El Paso Corporation William A. Smith Executive Vice Executive Vice President, El Paso Corporation 1001 Louisiana Street President Business Development of 1001 Louisiana Street Houston, Texas 77002 El Paso Corporation Houston, Texas 77002 John W. Somerhalder II President, Pipeline President, Pipeline Group El Paso Corporation 1001 Louisiana Street Group of 1001 Louisiana Street Houston, Texas 77002 El Paso Corporation Houston, Texas 77002 Britton White Jr. Executive Vice Executive Vice President El Paso Corporation 1001 Louisiana Street President and 1001 Louisiana Street Houston, Texas 77002 and General Counsel of El Paso Houston, Texas 77002 General Counsel Corporation Jeffrey I. Beason Senior Vice Senior Vice President and El Paso Corporation 1001 Louisiana Street President and Controller of El Paso 1001 Louisiana Street Houston, Texas 77002 Controller Corporation Houston, Texas 77002 C. Dana Rice Senior Vice Senior Vice President and El Paso Corporation 1001 Louisiana Street President and Treasurer of El Paso 1001 Louisiana Street Houston, Texas 77002 Treasurer Corporation Houston, Texas 77002 Patricia A. Shelton President President of El Paso Natural Gas Company 1001 Louisiana Street Western Pipeline Western Pipeline Division 1001 Louisiana Street Houston, Texas 77002 Division Houston, Texas 77002 Name, Principal Business Address of Organization in which Principal Name and Capacity in Which Principal Occupation Business Address Serves Occupation is Conducted ---------------- ------------------ ----------- ------------------------------------ E. J. Holm Chief Executive Chief Executive Officer El Paso Natural Gas Company 1001 Louisiana Street Officer Eastern Pipeline Division 1001 Louisiana Street Houston, Texas 77002 Eastern Pipeline Houston, Texas 77002 Division John D. Hushon Chief Executive Chief Executive Officer El Paso Energy International 1001 Louisiana Street Officer, El Paso Europe Company Houston, Texas 77002 El Paso Europe 1001 Louisiana Street Houston, Texas 77002 Greg C. Jenkins President of El President of El Paso El Paso Global Networks Company 1001 Louisiana Street Paso Global Global 1001 Louisiana Street Houston, Texas 77002 Networks Company Networks Company Houston, Texas 77002 Robert G. Phillips President of El President of El Paso Field El Paso Field Services, L.P. 1001 Louisiana Street Paso Field Services, L.P. 1001 Louisiana Street Houston, Texas 77002 Services, L.P. Houston, Texas 77002 James C. Yardley President, Southern President, Southern Southern Natural Gas Company 1001 Louisiana Street Natural Gas Company Natural 1001 Louisiana Street Houston, Texas 77002 Gas Company Houston, Texas 77002 John B. Holmes, Jr. Chief Operating Chief Operating Officer of El Paso Merchant Energy North 1001 Louisiana Street Officer Merchant Energy Group America Company Houston, Texas 77002 Merchant Energy 1001 Louisiana Street Group Houston, Texas 77002 Stephen C. Beasley President, President, Tennessee Gas Tennessee Gas Pipeline Company 1001 Louisiana Street Tennessee Gas Pipeline 1001 Louisiana Street Houston, Texas 77002 Pipeline Company Company Houston, Texas 77002 James J. Cleary President, ANR President of ANR Pipeline ANR Pipeline Company 1001 Louisiana Street Pipeline Company 1001 Louisiana Street Houston, Texas 77002 Company Houston, Texas 77002 Byron Kelly President, El Paso President, El Paso Energ El Paso Energy International 1001 Louisiana Street Energy International Company Company Houston, Texas 77002 International 1001 Louisiana Street Company Houston, Texas 77002 Tom Wade President, Merchant President, Merchant Energy Coastal States Crude Gathering 1001 Louisiana Street Energy Petroleum Petroleum Markets Company Houston, Texas 77002 Markets 1001 Louisiana Street Houston, Texas 77002 Rod Erskine President President of El Paso El Paso Production Company 1001 Louisiana Street El Paso Production Production 1001 Louisiana Street Houston, Texas 77002 Company Company Houston, Texas 77002 Byron Allumbaugh Director Retired Chairman 33 Ridgeline Drive 33 Ridgeline Drive Ralphs Grocery Company Newport Beach, CA 92660 Newport Beach, CA 92660 Name, Principal Business Address of Organization in which Principal Name and Capacity in Which Principal Occupation Business Address Serves Occupation is Conducted ---------------- ------------------ ----------- ------------------------------------ John M. Bissell Director Chairman of the Board of Bissell Inc. 2345 Walker Ave. N.W. Bissell Inc. 2345 Walker Avenue, N.W. Grand Rapids, MI 49501 Grand Rapids, MI 49501 Juan Carlos Braniff Director Vice Chairman Universidad 1200 Universidad 1200 Grupo Financiero Bancomer Col. XOCO Col. XOCO Mexico, D.F.C.P. 03399 Mexico, D.F.C.P. 03339 James F. Gibbons Director Professor at Stanford Stanford University Stafford University University Paul G. Allen Center Paul G. Allen Center for School of Engineering for Integrated Systems Integrated Systems Room 201 ( Mail Stop 4075) Room 201 (M.S. 4075) Stanford, CA 94305 Stanford, CA 94305 Anthony W. Hall, Jr. Director City Attorney City of Houston 900 Bagby, 4th Floor City of Houston, Texas 900 Bagby, 4th Floor Houston, Texas 77002 Houston, Texas 77002 Ronald L. Kuhn, Jr Director Business Consultant El Paso Corporation 1001 Louisiana Street 1001 Louisiana Street Houston, Texas 77002 Houston, Texas 77002 J. Carleton MacNeil Jr. Director Securities Consultant 3421 Spanish Trail 3421 Spanish Trail Apt. 227D Apt. 227D Delray, Florida 33483 Delray, Florida 33483 Thomas R. McDade Director Senior Partner, McDade, McDade, Fogler, Maines, L.L.P. Two Houston Center Fogler, Two Houston Center 909 Fannin, Suite 1200 Maines, L.L.P. 909 Fannin, Suite 1200 Houston, TX 77010 Houston, Texas 77010 Malcolm Wallop Director Frontiers of Freedom Frontiers of Freedom Foundation Frontiers of Freedom Foundation Foundation 12011 Lee Jackson Memorial Hwy. 12011 Lee Jackson Memorial Hwy. Fairfax, VA 22033 Fairfax, VA 22033 Joe B. Wyatt Director Chancellor Emeritus Vanderbilt University 2525 West End Ave., Vanderbilt University 2525 West End Ave., Suite 1410 Suite 1410 Nashville, TN 37203 Nashville, TN 37203 (d) Neither EnCap Investments, El Paso Corporation, El Paso Merchant Energy, nor any of the individuals identified in this Schedule I has, to the knowledge of the reporting persons, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) Neither EnCap Investments, El Paso Corporation, El Paso Merchant Energy, nor any of the individuals identified in this Schedule I has, to the knowledge of the reporting persons, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and a result of such proceeding 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 finding any violation with respect to such laws. (f) To the knowledge of the reporting persons, each of the individuals identified in this Schedule I is a citizen of the United States of America, with the exception of Juan Carlos Braniff who is a citizen of Mexico. EXHIBIT INDEX Exhibit No. Description ----------- ----------- Exhibit 10.1 - Stock Purchase Agreement dated October 22, 2001 between Plains Resources Inc. and EnCap Investments L.L.C.