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    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 6, 1998
                                                      Registration No. 333-----
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                -----------------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                -----------------
                          VISTA ENERGY RESOURCES, INC.
             (Exact name of registrant as specified in its charter)

             DELAWARE                                   75-2766114
  (State or other jurisdiction                       (I.R.S. Employer
of incorporation or organization)                   Identification No.)

                        550 WEST TEXAS AVENUE, SUITE 700
                              MIDLAND, TEXAS 79701
          (Address of principal executive offices, including zip code)
                              --------------------

                          BUSINESS CONSULTANT AGREEMENT
                                       AND
              1994 MIDLAND RESOURCES, INC. LONG-TERM INCENTIVE PLAN
                                       AND
              1996 MIDLAND RESOURCES, INC. LONG-TERM INCENTIVE PLAN
                                      AND
                      1995 DIRECTORS' STOCK OPTION PLAN

                            (Full title of the plans)

                                 C. RANDALL HILL
                      CHAIRMAN AND CHIEF EXECUTIVE OFFICER
                          VISTA ENERGY RESOURCES, INC.
                        550 WEST TEXAS AVENUE, SUITE 700
                              MIDLAND, TEXAS 79701
                                 (915) 570-5045
            (Name, address and telephone number of agent for service)

                                    copy to:

                                A. WINSTON OXLEY
                             VINSON & ELKINS L.L.P.
                            3700 TRAMMELL CROW CENTER
                                2001 ROSS AVENUE
                            DALLAS, TEXAS 75201-2975
                                 (214) 220-7700

                         CALCULATION OF REGISTRATION FEE


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                                                                                        Proposed
        Title of securities            Amount to be         Proposed maximum        maximum aggregate        Amount of
         to be registered               registered       offering price per unit*    offering price*     registration fee
- --------------------------------------------------------------------------------------------------------------------------

                                                                                               
Common Stock, $.01 par
value per share(1)................       318,000(2)          $ 3.1875                    $1,013,625        $ 282   
- --------------------------------------------------------------------------------------------------------------------------

   *     Estimated solely for purposes of calculating the registration fee in
         accordance with Rule 457(h) under the Securities Act of 1933 and based
         upon the average of the high and low prices reported on the American
         Stock Exchange on November 4, 1998.

   (1)   The warrant under the Business Consultant Agreement and the options
         under the 1994 Midland Resources, Inc. Long-Term Incentive Plan, the
         1996 Midland Resources, Inc. Long-Term Incentive Plan and the 1995 
         Directors' Stock Option Plan were previously issued by Midland 
         Resources, Inc. ("Midland"). Pursuant to the terms of a merger 
         agreement dated as of May 22, 1998 among Midland, Vista Resources 
         Partners, L.P., Vista Energy Resources, Inc. ("Vista") and Midland 
         Merger Co., Midland was merged into Vista. Pursuant to the terms of the
         merger agreement, the options and the warrant previously issued by 
         Midland are now exercisable for shares of common stock, par value $.01 
         per share, of Vista.
   (2)   If, as a result of stock splits, stock dividends or similar
         transactions, the number of securities purported to be registered on
         this Registration Statement changes, the provisions of Rule 416 shall
         apply to this Registration Statement, and this Registration Statement
         shall be deemed to cover the additional securities resulting from the
         split of, or dividend on, the securities covered by this Registration
         Statement.

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                                     PART II
               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

         The following documents have been filed with the Securities and
Exchange Commission (the "Commission") by the Company, and are incorporated
herein by reference and made a part hereof:

         (a)      The Company's prospectus dated September 18, 1998, as filed
                  with the Commission pursuant to Rule 424(b) under the
                  Securities Act of 1933;

         (b)      The description of the Company's Common Stock, $.01 par value
                  per share, contained in Item 1 of the Company's Registration
                  Statement on Form 8-A filed with the Commission pursuant to
                  the Securities Exchange Act of 1934 (the "Exchange Act") on
                  October 26, 1998.

         Each document filed by the Company pursuant to Section 13(a), 13(c), 14
or 15(d) of the Exchange Act subsequent to the date of this registration
statement and prior to the filing of a post-effective amendment which indicates
that all securities offered have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference in this
registration statement and to be a part hereof from the date of filing such
documents.

         Any statement incorporated by reference herein shall be deemed to be
modified or superseded for purposes of this registration statement to the extent
that a statement contained herein or in any subsequent filed document which also
is or is deemed to be incorporated by reference herein modifies or supersedes
such statement. Any statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this registration.


ITEM 4.  DESCRIPTION OF SECURITIES.

         Not applicable.


ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.

         Not applicable.


ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Article Eleven of the Certificate of Incorporation of the Company
provides that the Company shall indemnify its officers and directors to the
maximum extent allowed by the Delaware General Corporation Law. Pursuant to
Section 145 of the Delaware General Corporation Law, the Company generally has
the power to indemnify its present and former directors and officers against
expenses and liabilities incurred by them in connection with any suit to which
they are, or are threatened to be made, a party by reason of their serving in
those positions so long as they acted in good faith and in a manner they
reasonably believed to be in, or not opposed to, the best interests of the
Company, and with respect to any criminal action, so long as they had no
reasonable cause to believe their conduct was unlawful. With respect to suits by
or in the right of the Company, however, indemnification is generally limited to
attorneys' fees and other expenses and is not available if the person is
adjudged to be liable to the Company, unless the court determines that
indemnification is appropriate. The statute expressly provides that the power to
indemnify authorized thereby is not exclusive of any rights granted under any
bylaw, agreement, vote of stockholders or disinterested directors, or otherwise.
The Company also has the power to purchase and maintain insurance for its
directors and officers. Additionally, Article Eleven of the Certificate of
Incorporation provides that, in the event that an officer or director files suit
against the Company seeking indemnification of liabilities or expenses incurred,
the burden will be on the Company to prove that the indemnification would not be
permitted under the Delaware General Corporation Law.

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         The preceding discussion of the Company's Certificate of Incorporation
and Section 145 of the Delaware General Corporation Law is not intended to be
exhaustive and is qualified in its entirety by the Certificate of Incorporation
and Section 145 of the Delaware General Corporation Law.

         The Company has entered into indemnity agreements with its directors
and officers. Pursuant to such agreements, the Company will, to the extent
permitted by applicable law, indemnify such persons against all expenses,
judgments, fines and penalties incurred in connection with the defense or
settlement of any actions brought against them by reason of the fact that they
were directors or officers of the Company or assumed certain responsibilities at
the direction of the Company.


ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED.

         Not applicable.


ITEM 8.  EXHIBITS.

         Unless otherwise indicated below as being incorporated by reference to
another filing of the Company with the Commission, each of the following
exhibits is filed herewith:

         4.1      --        Business Consultant Agreement

         4.2      --        1994 Midland Resources, Inc. Long-Term Incentive
                            Plan

         4.3      --        1996 Midland Resources, Inc. Long-Term Incentive
                            Plan

         4.4      --        1995 Directors' Stock Option Plan.

         5.1      --        Opinion of Vinson & Elkins L.L.P.

        23.1      --        Consent of Vinson & Elkins L.L.P. (set forth in
                            Exhibit 5.1)

        23.2      --        Consent of Arthur Andersen LLP, Independent Public 
                            Accountants

        24.1      --        Power of Attorney (included on the signature pages
                            of this Registration Statement)

ITEM 9.  UNDERTAKINGS.

         The Company hereby undertakes:

         (1) to file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement:

                  (i)      to include any prospectus required by section
         10(a)(3) of the Securities Act;

                  (ii)     to reflect in the prospectus any facts or events
         arising after the effective date of the Registration Statement (or the
         most recent post-effective amendment thereof) which, individually or in
         the aggregate, represent a fundamental change in the information set
         forth in the Registration Statement; and

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                  (iii)    to include any material information with respect to
         the plan of distribution not previously disclosed in the Registration
         Statement or any material change to such information in the
         Registration Statement;

provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Company pursuant to
section 13 or section 15(d) of the Exchange Act that are incorporated by
reference in this Registration Statement.

         (2)      That, for the purposes of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
Registration Statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (3)      To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

         (4)      That, for purposes of determining any liability under the
Securities Act, each filing of the Company's annual report pursuant to section
13(a) or section 15(d) of the Exchange Act (and, where applicable, each filing
of an employee benefit plan's annual report pursuant to Section 15(d) of the
Exchange Act) that is incorporated by reference in the Registration Statement
shall be deemed to be a new Registration Statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

         (5)      Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Company pursuant to the foregoing provisions, or otherwise, the Company
has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Company of expenses incurred or paid
by a director, officer or controlling person of the Company in the successful
defense of any action, suit or proceeding) is asserted by such director, officer
or controlling person in connection with the securities being registered, the
Company will, unless in the opinion of its counsel the matter has been settled
by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as
expressed in the Securities Act and will be governed by the final adjudication
of such issue.

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                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Company certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Midland, State of Texas, on the 5th day of
November, 1998.


                                  VISTA ENERGY RESOURCES, INC.

                 
                                  By: /s/ C. Randall Hill
                                     -------------------------------------------
                                      C. Randall Hill
                                      Chairman of the Board and Chief Executive
                                      Officer


                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints C. Randall Hill as his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign any
and all amendments, including pre- and post-effective amendments, to this
Registration Statement, and any registration statement relating to the offering
covered by this Registration Statement and filed pursuant to Rule 462(b) under
the Securities Act, and to file the same, with exhibits thereto and other
documents in connection therewith, with the Commission, granting unto said
attorney-in-fact and agent full power and authority to do and perform each and
every act and thing requisite and necessary to be done, as fully to all intents
and purposes as he might or could do in person, hereby ratifying and confirming
all that said attorney-in-fact and agent or his substitute may lawfully do or
cause to be done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.





                 Signature                                       Capacity                              Date
                 ---------                                       --------                              ----


                                                                                          
             /s/ C. Randall Hill              Chairman of the Board and Chief Executive         November 5, 1998
- ------------------------------------------    Officer (principal executive officer,
               C. Randall Hill                principal financial officer and principal
                                              accounting officer)

             /s/ Steven D. Gray               President and Director                            November 5, 1998
- ------------------------------------------
               Steven D. Gray


            /s/ Kenneth A. Hersh              Director                                          November 5, 1998
- ------------------------------------------
              Kenneth A. Hersh


             /s/ David R. Albin               Director                                          November 5, 1998
- ------------------------------------------
               David R. Albin




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             /s/ John S. Foster               Director                                          November 5, 1998
- ------------------------------------------
               John S. Foster


              /s/ John Q. Adams               Director                                          November 5, 1998
- ------------------------------------------
                John Q. Adams

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                               INDEX TO EXHIBITS



         Unless otherwise indicated below as being incorporated by reference to
another filing of the Company with the Commission, each of the following
exhibits is filed herewith:

         4.1      --        Business Consultant Agreement

         4.2      --        1994 Midland Resources, Inc. Long-Term Incentive
                            Plan

         4.3      --        1996 Midland Resources, Inc. Long-Term Incentive
                            Plan

         4.4      --        1995 Directors' Stock Option Plan.

         5.1      --        Opinion of Vinson & Elkins L.L.P.
                            
        23.1      --        Consent of Vinson & Elkins L.L.P. (set forth in
                            Exhibit 5.1)

        23.2      --        Consent of Arthur Andersen LLP, Independent Public
                            Accountants

        24.1      --        Power of Attorney (included on the signature pages
                            of this Registration Statement)