SOUTHERN MINERAL CORP
S-2MEF, 1997-10-01
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
 
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 1, 1997
 
                                                      REGISTRATION NO. 333-
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
 
 
                                    FORM S-2
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
 
                          SOUTHERN MINERAL CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)
 
<TABLE>
<S>                                                   <C>
                       NEVADA                                              36-2068676
           (State or Other Jurisdiction of                              (I.R.S. Employer
           Incorporation or Organization)                              Identification No.)
</TABLE>
 
                             ---------------------
 
<TABLE>
<C>                                                   <C>
                                                                         STEVEN H. MIKEL
                                                              PRESIDENT AND CHIEF EXECUTIVE OFFICER
               500 DALLAS, SUITE 2800                                500 DALLAS, SUITE 2800
                HOUSTON, TEXAS 77002                                  HOUSTON, TEXAS 77002
                   (713) 658-9444                                        (713) 658-9444
     (Address Including Zip Code, and Telephone              (Name, Address, Including Zip Code, and
           Number, Including Area Code, or                   Telephone Number, Including Area Code,
      Registrant's Principal Executive Offices)                       of Agent for Service)
</TABLE>
 
                             ---------------------
 
                                With copies to:
 
<TABLE>
<C>                                                   <C>
                RICK L. BURDICK, P.C.                                  GEORGE G. YOUNG III
                  RICHARD J. WILKIE                                  BUTLER & BINION, L.L.P.
      AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.                       1000 LOUISIANA STREET
   711 LOUISIANA STREET, SUITE 1900 -- SOUTH TOWER                         SUITE 1600
                HOUSTON, TEXAS 77002                                  HOUSTON, TEXAS 77002
                   (713) 220-5800                                        (713) 237-3605
</TABLE>
 
                             ---------------------
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable following the effectiveness of this Registration Statement.
 
    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box. [ ]
 
    If the Registrant elects to deliver its latest annual report to security
holders, or a complete and legible facsimile thereof, pursuant to Item 11(a)(1)
of this Form, check the following box. [ ]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [X]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
 
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
                             ---------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
============================================================================================================================
    TITLE OF EACH CLASS OF                                PROPOSED MAXIMUM         PROPOSED MAXIMUM
          SECURITIES                AMOUNT TO BE           OFFERING PRICE         AGGREGATE OFFERING          AMOUNT OF
       TO BE REGISTERED             REGISTERED(1)           PER UNIT(2)                PRICE(2)           REGISTRATION FEE
- ----------------------------------------------------------------------------------------------------------------------------
<S>                              <C>                   <C>                      <C>                      <C>
Convertible Subordinated
  Debentures due 2007..........       6,900,000                 100%                  6,900,000               2,090.91
- ----------------------------------------------------------------------------------------------------------------------------
Common Stock, par value $.01...          (3)                    (3)                      (3)                     (3)
============================================================================================================================
</TABLE>
 
(1) Includes up to 9,000,000 in aggregate principal amount of Convertible
    Subordinated Debentures due 2007 which the Underwriters have the option to
    purchase to cover over-allotments, if any.
(2) Estimated solely for purpose of calculating the registration fee in
    accordance with Rule 457(a) of the Securities Act of 1933, as amended.
 
(2) There are also being registered an indeterminate number of shares of Common
    Stock issuable upon conversion of Convertible Subordinated Debentures due
    2007, if any. No separate consideration will be received for the Common
    Stock.
                             ---------------------
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
 
================================================================================
<PAGE>   2
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

        The information in the Registration Statement on Form S-2 filed by
Southern Mineral Corporation (the "Company") with the Securities and Exchange
Commission (File No. 333-35843) pursuant to the Securities Act of 1933, as
amended, is incorporated by reference into this Registration Statement.


                                      II-1
<PAGE>   3
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-2 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Houston, State of Texas, on the 1st day of October
1997.
 
                                            SOUTHERN MINERAL CORPORATION
                                            (Registrant)
 
                                            By:     /s/ STEVEN H. MIKEL
                                              ----------------------------------
                                                       Steven H. Mikel
                                                President and Chief Executive
                                                            Officer
 
     Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the capacities indicated
on the dates indicated.
 
<TABLE>
<CAPTION>
                      SIGNATURE                                       TITLE                        DATE
                      ---------                                       -----                        ----
<S>                                                     <C>                                 <C>
 
                 /s/ STEVEN H. MIKEL                    Director and President and Chief     October 1, 1997
- -----------------------------------------------------     Executive Officer
                   Steven H. Mikel                        (principal executive officer)
 
                          *                             Vice President -- Finance            October 1, 1997
- -----------------------------------------------------     (principal financial and
                   James H. Price                         accounting officer)
 
                          *                             Chairman of the Board and Director   October 1, 1997
- -----------------------------------------------------
                  Howell H. Howard
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                  B. Travis Basham
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                  Thomas R. Fuller
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                  Robert R. Hillery
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                 E. Ralph Hines, Jr.
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                  James E. Nielson
</TABLE>
 
                                        2
<PAGE>   4
<TABLE>
<CAPTION>
                      SIGNATURE                                       TITLE                        DATE
                      ---------                                       -----                        ----
<C>                                                     <S>                                <C>
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                Donald H. Wiese, Jr.
 
                          *                             Director                             October 1, 1997
- -----------------------------------------------------
                Spencer L. Youngblood
 
               *By /s/ STEVEN H. MIKEL                                                       October 1, 1997
  -------------------------------------------------
                   Steven H. Mikel
                  Attorney-in-Fact
</TABLE>
 
                                        3
<PAGE>   5
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                              EXHIBIT DESCRIPTION
        -------                              -------------------
<C>                      <S>
           1.1           -- Form of Underwriting Agreement (incorporated by reference
                            to Exhibit 1.1 to Form S-2, dated October 1, 1997,
                            registration No. 333-35843).
           2.1           -- Exchange Agreement by and among Diverse Production Co.,
                            The Shareholders of Diverse Production Co., and the
                            Company dated March 2, 1995 (incorporated by reference to
                            Exhibit (I) to Form 10-K for fiscal year ended December
                            31, 1994).
           2.2           -- Purchase and Sale Agreement, dated as of October 31,
                            1995, by and among Stone & Webster, Incorporated, Stone &
                            Webster Oil Company, Inc. and the Company (incorporated
                            by reference to Exhibit 2.1 to Form 8-K dated October 31,
                            1995).
           2.3           -- Purchase and Sale Agreement and Assignment of Partnership
                            Interest, dated August 30, 1996 by and between Torch
                            Energy Finance Fund Limited Partnership I and the Company
                            (incorporated by reference to Exhibit 2.1 to Form 8-K
                            dated August 30, 1996).
           2.4           -- Agreement Regarding Dissolution of Partnerships, dated
                            August 30, 1996, between the Company and Diasu Oil & Gas
                            Co. (incorporated by reference to Exhibit 2.2 to Form 8-K
                            dated August 30, 1996).
           2.5           -- Purchase and Sale Agreement, dated as of May 20, 1997, by
                            and among Mario Garcia and Delores E. Garcia and the
                            Company (incorporated by reference to Exhibit 2.1 to Form
                            8-K dated May 20, 1997).
           3.1           -- Amended and Restated Articles of Incorporation of the
                            Company, as amended (incorporated by reference to Exhibit
                            3.1 to Form 8-K dated May 17, 1996).
           3.2           -- Bylaws of the Company, as amended (incorporated by
                            reference to Exhibit 3.2 to Form S-2, dated October 1,
                            1997, registration No. 333-35843).
           4.5           -- Form of Indenture pursuant to which the Company's
                            Convertible Debentures due 2007 are to be issued
                            (incorporated by reference to Exhibit 4.5 to Form S-2,
                            dated October 1, 1997, registration No. 333-35843).
           4.6           -- Form of Subordinated Debenture (included in Exhibit 4.5
                            to Form S-2, dated October 1, 1997, registration No.
                            333-35843).
          *5.1           -- Opinion of Akin, Gump, Strauss, Hauer & Feld, L.L.P.
          10.1           -- Stock Option Agreement made as of December 31, 1994
                            between the Company and Steven H. Mikel (incorporated by
                            reference to Exhibit (h) to Form 10-K for fiscal year
                            ended December 31, 1994).
          10.2           -- 1995 Non-Employee Director Compensation Plan
                            (incorporated by reference to Exhibit (k) to Form 10-K
                            for fiscal year ended December 31, 1994).
          10.3           -- Credit Agreement, dated December 20, 1995, between the
                            Company, SMC Production Co., San Salvador Development
                            Company, Inc., Venture Resources, Inc., Venture Pipeline
                            Company, VenGas Pipeline Company, Spruce Hills Production
                            Company, Inc., and Compass Bank-Houston for Reducing
                            Revolver Line of Credit up to $25,000,000 (incorporated
                            by reference to Exhibit 10.1 to Form 8-K dated December
                            20, 1995).
</TABLE>
<PAGE>   6
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                              EXHIBIT DESCRIPTION
        -------                              -------------------
<C>                      <S>
          10.4           -- Promissory Note, dated December 20, 1995, in the original
                            principal amount of $25,000,000 made by the Company, SMC
                            Production Co., San Salvador Development Company, Inc.,
                            Venture Resources, Inc., Venture Pipeline Company, VenGas
                            Pipeline Company, Spruce Hills Production Company, Inc.
                            in favor of Compass Bank-Houston (incorporated by
                            reference to Exhibit 10.2 to Form 8-K dated December 20,
                            1995).
          10.5           -- Credit Agreement, dated December 20, 1995, between the
                            Company, SMC Production Co., San Salvador Development
                            Company, Inc., Venture Resources, Inc., Venture Pipeline
                            Company, VenGas Pipeline Company, Spruce Hills Production
                            Company, Inc. and Compass Bank-Houston for Term Loan of
                            $3,500,000 (incorporated by reference to Exhibit 10.3 to
                            Form 8-K dated December 20, 1995).
          10.6           -- Promissory Note, dated December 20, 1995, in the original
                            principal amount of $3,500,000 made by the Company, SMC
                            Production Co., San Salvador Development Company, Inc.,
                            Venture Resources, Inc., Venture Pipeline Company, VenGas
                            Pipeline Company, Spruce Hills Production Company, Inc.
                            in favor of Compass Bank-Houston (incorporated by
                            reference to Exhibit 10.4 to Form 8-K dated December 20,
                            1995).
          10.7           -- 1996 Stock Option Plan (incorporated by reference to
                            Exhibit 10.10 to Form 10-KSB for fiscal year ended
                            December 31, 1995).
          10.8           -- 1996 Employee Stock Purchase Plan (incorporated by
                            reference to Exhibit 10.11 to Form 10-KSB for fiscal year
                            ended December 31, 1995).
          10.9           -- Joint Venture Agreement, dated October 1, 1995, between
                            the Company and The Links Group, Inc. (incorporated by
                            reference to Exhibit 10.12 to Form 10-KSB for fiscal year
                            ended December 31, 1995).
          10.10          -- Option Agreement, dated January 5, 1996, between the
                            Company and Diasu Oil & Gas Company, Inc. covering the
                            exploration joint venture (incorporated by reference to
                            Exhibit 10.13 to Form 10-KSB for fiscal year ended
                            December 31, 1995).
          10.11          -- Stock Option Agreement dated April 6, 1995, between the
                            Company and Robert R. Hillery (incorporated by reference
                            to Exhibit 10.14 to Form 10-KSB for fiscal year ended
                            December 31, 1995).
          10.12          -- Subscription Agreement and Assumption of Obligations,
                            dated January 5, 1995, between the Company and Gary L.
                            Chitty, and Thomas J. McMinn (incorporated by reference
                            to Exhibit 10.15 to Form 10-KSB/A for fiscal year ended
                            December 31, 1995).
          10.13          -- Amendment to Credit Agreement between the Company and
                            Compass Bank-Houston dated August 30, 1996 (incorporated
                            by reference to Exhibit 10.1 to Form 8-K dated August 30,
                            1996).
          10.14          -- Second Amendment to Credit Agreement between the Company
                            and Compass Bank dated December 17, 1996 (incorporated by
                            reference to Exhibit 10.14 to Form 10-KSB for the fiscal
                            year ended December 31, 1996).
          10.15          -- Third Amendment to Credit Agreement between the Company
                            and Compass Bank dated June 10, 1997 (incorporated by
                            reference to Exhibit 10.15 to Form S-2, dated October 1,
                            1997, registration No. 333-35843).
          10.16          -- Fourth Amendment to Credit Agreement between the Company
                            and Compass Bank dated June 30, 1997 (incorporated by
                            reference to Exhibit 10.1 to Form 10-QSB for the
                            quarterly period ended June 30, 1997).
</TABLE>
<PAGE>   7
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                              EXHIBIT DESCRIPTION
        -------                              -------------------
<C>                      <S>
          10.17          -- Incentive Stock Option Agreement between the Company and
                            M. Michael Jenson (incorporated by reference to Exhibit
                            10.17 to Form S-2, dated October 1, 1997, registration
                            No. 333-35843).
          11.1           -- Computation of earnings per common and equivalent share
                            (incorporated by reference to Exhibit 11.1 to Form S-2,
                            dated October 1, 1997, registration No. 333-35843).
          12.1           -- Computation of ratios (incorporated by reference to
                            Exhibit 12.1 to Form S-2, dated October 1, 1997,
                            registration No. 333-35843).
         *23.1           -- Consent of Grant Thornton LLP.
          23.2           -- Consent of Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                            (included in its opinion filed as Exhibit 5.1).
         *23.3           -- Consent of Netherland, Sewell & Associates, Inc.
         *23.4           -- Consent of McDaniel & Associates Consultants, Ltd.
         *23.5           -- Consent of KPMG Peat Marwick LLP.
         *23.6           -- Consent of Ryder Scott Company Petroleum Engineers.
          24.1           -- Power of Attorney (incorporated by reference to Exhibit
                            24.1 to Form S-2, dated October 1, 1997, registration no.
                            333-35843).
          25.1           -- Form T-1, Statement of Eligibility and Qualification
                            under the Trust Indenture Act of 1939 of American Stock
                            Transfer & Trust Company, as Trustee (incorporated by
                            reference to Exhibit 25.1 to Form S-2, dated October 1,
                            1997, registration no. 333-35843).
          27.1           -- Financial Data Schedule (incorporated by reference to
                            Exhibit 27.1 to Form S-2, dated October 1, 1997,
                            registration no. 333-35843).
</TABLE>
 
- ---------------
 
* Filed herewith.

<PAGE>   1
                                                                     EXHIBIT 5.1

                                October 1, 1997




Southern Mineral Corporation
500 Dallas, Suite 2800
Houston, Texas  77002-4708

         RE:      REGISTRATION STATEMENT ON FORM S-2

Dear Ladies and Gentlemen:


         We have acted as counsel to Southern Minerals Corporation (the
"Company") in connection with preparation of the above referenced Registration
Statement on Form S-2 filed by the Company with the Securities and Exchange
Commission on October 1, 1997 pursuant to Rule 462(b) of the Securities Act of
1933, as amended (the "Act"), covering $41,400,000 aggregate principal amount of
6.875% Convertible Subordinated Debentures due 2007 (the "Debentures"),
including up to $5,400,000 in aggregate principal amount of Debentures pursuant
to an over-allotment option granted to the underwriters, and such number of
shares of Common Stock, par value $.01 per share (the "Common Stock"), as may be
issuable upon conversion of the Debentures, of Southern Mineral Corporation, a
Nevada corporation (the "Company"), we, as your counsel, have examined such
corporate records, certificates and other documents and such questions of law as
we have considered necessary or appropriate for the purposes of this opinion:


         1.   The Company has been duly incorporated and is an existing
              corporation in good standing under the laws of the State of
              Nevada.


         2.   When the Registration Statement has become effective under the
              Act, the issuance and sale of the Debentures will not violate any
              applicable law or agreement or instrument then binding on the
              Company.


         3.   A sufficient number of shares of Common Stock have been reserved
              for issuance upon the conversion of the Debentures, as
              contemplated in the Registration Statement.


         4.   Shares of Common Stock issued and delivered upon conversion of
              the Debentures, in accordance the with indenture contemplated in
              the Registration Statement, will be duly and validly issued,
              fully paid and nonassessable.

<PAGE>   2
AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.
Southern Mineral Corporation
Page 2



         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement relating to the Debentures and the Common Stock and to
the reference to us under the heading "Legal Matters" in the Prospectus
contained therein. In giving such consent, we do not thereby admit that we are
in the category of person whose consent is required under Section 7 of the Act.



                                      Very truly yours,



                                      AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.


<PAGE>   1

                                                                EXHIBIT 23.1



              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


        We have issued our report dated February 21, 1996, accompanying the
consolidated financial statements of Southern Mineral Corporation contained in
the Registration Statement filed pursuant to Rule 462(b) promulgated under the
Securities Act of 1933, as amended, and Prospectus. We consent to the use of the
aforementioned report in the Registration Statement and Prospectus, and to the
use of our name as it appears under the caption "Experts".



/s/ GRANT THORNTON LLP

GRANT THORNTON LLP

Houston, Texas
October 1, 1997

<PAGE>   1
                                                                  EXHIBIT 23.3


Netherland, Sewell & Associates, Inc.
International Petroleum Consultants
Engineering, Geology, Geophysics


 
                CONSENT OF NETHERLAND, SEWELL & ASSOCIATES, INC.


     We hereby consent to the incorporation by reference into the Form S-2
Registration Statement filed pursuant to Rule 462(b) promulgated under the
Securities Act of 1933, as amended, including any amendment thereto, of Southern
Mineral Corporation, a Nevada corporation (the "Company"), of the references to
this firm and to its reports listed below regarding the Southern Mineral
Corporation proved reserves estimates contained in the Company's Prospectus on
Form S-2 to be filed by Southern Mineral Corporation with the Securities and
Exchange Commission.

        1. Report of domestic proved reserves estimates as of January 1, 1996
           dated March 1, 1996.

        2. Audit of domestic proved reserves estimates as of December 31, 1996
           dated February 25, 1997.

        3. Report of the proved reserves estimates of the Big Escambia Creek
           Field Acquisition, as of December 31, 1996, dated September 29, 1997.




                                        NETHERLAND, SEWELL & ASSOCIATES, INC.



                                        By: /s/ DANNY D. SIMMONS
                                            ---------------------------------
                                            Danny D. Simmons
                                            Senior Vice President


Houston, Texas
October 1, 1997

<PAGE>   1
                                                                EXHIBIT 23.4


              [MCDANIEL & ASSOCIATES CONSULTANTS LTD. LETTERHEAD]


Reference:  SOUTHERN MINERAL CORPORATION 
            REGISTRATION STATEMENT FORM S-2



We consent to the reference to our evaluation of "Spruce Hills Production
Company Inc., Evaluation of Oil & Gas Reserves, based on Escalating Price
Assumptions, as of April 1, 1997," dated as of June 13, 1997,in the Registration
Statement on Form S-2 filed pursuant to Rule 462(b) promulgated under the
Securities Act of 1933, as amended, of Southern Mineral Corporation and any
amendments thereto and to all references to this firm in the Prospectus, which
is part of the Registration Statement.


MCDANIEL & ASSOCIATES CONSULTANTS LTD.



B. H. EMSLIE
- ---------------------
B. H. Emslie, P. Eng.
Vice President 



Calgary, Alberta
Dated: October 1, 1997


<PAGE>   1
 
                                                                    EXHIBIT 23.5
 
The Board of Directors
Southern Mineral Corporation
 
     We consent to the use of our report included herein, and our report on the
financial statements of BEC Energy Inc. incorporated herein by reference and to
the reference of our firm under the heading "Experts" in the prospectus.
 
                                          KPMG Peat Marwick LLP
 
Houston, Texas
October 1, 1997

<PAGE>   1
                                                                    EXHIBIT 23.6

              CONSENT OF RYDER SCOTT COMPANY PETROLEUM ENGINEERS

        We hereby consent to the incorporation by reference into this Form S-2 
Registration Statement filed pursuant to Rule 462(b) promulgated under the
Securities Act of 1933, as amended, for Southern Mineral Corporation, a Nevada
corporation (the "Company"), to the references to this firm and to its reports
listed below regarding the Southern Mineral Corporation proved reserves
estimates contained in the Company's Prospectus on Form S-2 to be filed by
Southern Mineral Corporation with the Securities and Exchange Commission.

        Report of the Ecuadorian proved reserves estimates as of January 1,
1997.


                                                RYDER SCOTT COMPANY
                                                PETROLEUM ENGINEERS

Houston, Texas
October 1, 1997



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