EVI INC
SC 13G/A, 1998-02-17
OIL & GAS FIELD MACHINERY & EQUIPMENT
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                                                                

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                              Energy Ventures, Inc.
- - - --------------------------------------------------------------------------------
                                (Name of Issuer)
                                  Common Stock
- - - --------------------------------------------------------------------------------
                         (Title of Class of Securities)
                                    292740107
- - - --------------------------------------------------------------------------------
                                 (CUSIP Number)



Check here if a fee is being paid with this  statement:  (A fee is not  required
only if the  filing  person:  (1) has a  previous  statement  on file  reporting
beneficial  ownership  of more than  five  percent  of the  class of  securities
described in Item 1; and (2) has filed no amendment subsequent thereto reporting
beneficial ownership of five percent or less of such class.) (See Rule 13d-7).

*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 in 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).


                                                 PAGE 1 OF 9 PAGES


<PAGE>

<TABLE>
<CAPTION>

     <S>                                                                             <C>
- - - ---------------------------------------                                         --------------------------------------
CUSIP No.   292740107                                    13G                    Page  2  of  9  Pages
- - - ---------------------------------------                                         --------------------------------------

- - - --------- ---------------------------------------------------------------------------------------------------------------
   1      NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          John Hancock Mutual Life Insurance Company

          I.R.S. No. 04-1414660
- - - --------- ---------------------------------------------------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                      (a)  |_|
                                                                                 (b)  |_|
          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   3      SEC USE ONLY


- - - --------- ---------------------------------------------------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION

          Commonwealth of Massachusetts

- - - --------- ---------------------------------------------------------------------------------------------------------------
                   -------- ---------------------------------------------------------------------------------------------
                      5     SOLE VOTING POWER
    Number of
     Shares                 -0-


                   -------- ---------------------------------------------------------------------------------------------
  Beneficially        6     SHARED VOTING POWER
    Owned by
      Each                  -0-


                   -------- ---------------------------------------------------------------------------------------------
    Reporting         7     SOLE DISPOSITIVE POWER
     Person
      With                  -0-


                   -------- ---------------------------------------------------------------------------------------------
                      8     SHARED DISPOSITIVE POWER

                            -0-

                   -------- ---------------------------------------------------------------------------------------------
- - - --------- ---------------------------------------------------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          None,  except  through its  indirect,  wholly-owned  subsidiary,  John
          Hancock Advisers, Inc.


- - - --------- ---------------------------------------------------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          See line 9, above.


- - - --------- ---------------------------------------------------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*

          IC, IA, HC

- - - --------- ---------------------------------------------------------------------------------------------------------------
                                       *SEE INSTRUCTIONS BEFORE FILLING OUT!
                                                 PAGE 2 OF 9 PAGES


<PAGE>


     <S>                                                                                  <C>
- - - ---------------------------------------                                         --------------------------------------
CUSIP No.   292740107                                    13G                    Page  3  of  9  Pages
- - - ---------------------------------------                                         --------------------------------------

- - - --------- ---------------------------------------------------------------------------------------------------------------
   1      NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          John Hancock Subsidiaries, Inc.
          I.R.S. No. 04-2687223

- - - --------- ---------------------------------------------------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                      (a)  |_|
                                                                                 (b)  |_|
          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   3      SEC USE ONLY


- - - --------- ---------------------------------------------------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION

          Delaware

- - - --------- ---------------------------------------------------------------------------------------------------------------
                   -------- ---------------------------------------------------------------------------------------------
                      5     SOLE VOTING POWER
    Number of
     Shares                 -0-


                   -------- ---------------------------------------------------------------------------------------------
  Beneficially        6     SHARED VOTING POWER
    Owned by
      Each                  -0-


                   -------- ---------------------------------------------------------------------------------------------
    Reporting         7     SOLE DISPOSITIVE POWER
     Person
      With                  -0-


                   -------- ---------------------------------------------------------------------------------------------
                      8     SHARED DISPOSITIVE POWER

                            -0-

                   -------- ---------------------------------------------------------------------------------------------
- - - --------- ---------------------------------------------------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          None,  except  through its  indirect,  wholly-owned  subsidiary,  John
          Hancock Advisers, Inc.

- - - --------- ---------------------------------------------------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          See line 9, above.


- - - --------- ---------------------------------------------------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*

          HC

- - - --------- ---------------------------------------------------------------------------------------------------------------
                                       *SEE INSTRUCTIONS BEFORE FILLING OUT!
                                                 PAGE 3 OF 9 PAGES


<PAGE>


     <S>                                                                             <C>
- - - ---------------------------------------                                         --------------------------------------
CUSIP No.   292740107                                    13G                    Page  4  of  9  Pages
- - - ---------------------------------------                                         --------------------------------------

- - - --------- ---------------------------------------------------------------------------------------------------------------
   1      NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          The Berkeley Financial Group
          I.R.S. No. 04-3145626

- - - --------- ---------------------------------------------------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                      (a)  |_|
                                                                                 (b)  |_|
          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   3      SEC USE ONLY


- - - --------- ---------------------------------------------------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION

          Commonwealth of Massachusetts

- - - --------- ---------------------------------------------------------------------------------------------------------------
                   -------- ---------------------------------------------------------------------------------------------
                      5     SOLE VOTING POWER
    Number of
     Shares                 -0-


                   -------- ---------------------------------------------------------------------------------------------
  Beneficially        6     SHARED VOTING POWER
    Owned by
      Each                  -0-


                   -------- ---------------------------------------------------------------------------------------------
    Reporting         7     SOLE DISPOSITIVE POWER
     Person
      With                  -0-


                   -------- ---------------------------------------------------------------------------------------------
                      8     SHARED DISPOSITIVE POWER

                            -0-

                   -------- ---------------------------------------------------------------------------------------------
- - - --------- ---------------------------------------------------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          None, except through its direct, wholly-owned subsidiary, John Hancock
          Advisers, Inc.

- - - --------- ---------------------------------------------------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          See line 9, above.


- - - --------- ---------------------------------------------------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*

          HC

- - - --------- ---------------------------------------------------------------------------------------------------------------
                                       *SEE INSTRUCTIONS BEFORE FILLING OUT!
                                                 PAGE 4 OF 9 PAGES


<PAGE>


     <S>                                                                             <C>
- - - ---------------------------------------                                         --------------------------------------
CUSIP No.   292740107                                    13G                    Page  5  of  9  Pages
- - - ---------------------------------------                                         --------------------------------------

- - - --------- ---------------------------------------------------------------------------------------------------------------
   1      NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          John Hancock Advisers, Inc.
          I.R.S. No. 04-2441573


- - - --------- ---------------------------------------------------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                      (a)  |_|
                                                                                 (b)  |_|
          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   3      SEC USE ONLY


- - - --------- ---------------------------------------------------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION

          Delaware

- - - --------- ---------------------------------------------------------------------------------------------------------------
                   -------- ---------------------------------------------------------------------------------------------
                      5     SOLE VOTING POWER
    Number of
     Shares                 -0-


                   -------- ---------------------------------------------------------------------------------------------
  Beneficially        6     SHARED VOTING POWER
    Owned by
      Each                  -0-

                   -------- ---------------------------------------------------------------------------------------------
    Reporting         7     SOLE DISPOSITIVE POWER
     Person
      With                  -0-


                   -------- ---------------------------------------------------------------------------------------------
                      8     SHARED DISPOSITIVE POWER

                            -0-

                   -------- ---------------------------------------------------------------------------------------------
- - - --------- ---------------------------------------------------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          0

- - - --------- ---------------------------------------------------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

          N/A

- - - --------- ---------------------------------------------------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          0.0%


- - - --------- ---------------------------------------------------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*

          IA

- - - --------- ---------------------------------------------------------------------------------------------------------------
                                       *SEE INSTRUCTIONS BEFORE FILLING OUT!
                                                 PAGE 5 OF 9 PAGES
</TABLE>


<PAGE>


         The original  statement  shall be signed by each person on whose behalf
the  statement is filed or his  authorized  representative.  If the statement is
signed  on behalf of a person by his  authorized  representative  other  than an
executive  officer or general  partner of the  filing  person,  evidence  of the
representative's  authority to sign on behalf of such person shall be filed with
the  statement,  provided,  however,  that a power of attorney  for this purpose
which is already on file with the Commission may be  incorporated  by reference.
The name and any title of each person who signs the statement  shall be typed or
printed beneath his signature.

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission.

     Attention:  Intentional  misstatements  or  omissions  of  fact  constitute
Federal criminal violations (See 18 U.S.C. 1001)

         Item 1(a)    Name of Issuer:
                      Energy Ventures, Inc.

         Item 1(b)    Address of Issuer's Principal Executive Offices:
                      Suite 1760
                      5 Post Oak Park
                      Houston, TX   77027

         Item 2(a)    Name of Person Filing:
                      This filing is made on behalf of John Hancock  Mutual Life
                      Insurance   Company    ("JHMLICO"),    JHMLICO's   direct,
                      wholly-owned subsidiary,  John Hancock Subsidiaries,  Inc.
                      ("JHSI"),  JHSI's  direct,  wholly-owned  subsidiary,  The
                      Berkeley Financial Group ("TBFG") and TBFG's  wholly-owned
                      subsidiary, John Hancock Advisers, Inc. ("JHA").

         Item 2(b)    Address of the Principal Offices:
                      The  principal  business  offices of JHMLICO  and JHSI are
                      located at John Hancock Place,  P.O. Box 111,  Boston,  MA
                      02117. The principal  business offices of TBFG and JHA are
                      located at 101 Huntington  Avenue,  Boston,  Massachusetts
                      02199.

         Item 2(c)    Citizenship:
                      JHMLICO and TBFG were  organized  and exist under the laws
                      of the  Commonwealth of  Massachusetts.  JHSI and JHA were
                      organized  and  exist  under  the  laws  of the  State  of
                      Delaware.

         Item 2(d)    Title of Class of Securities:
                      Common Stock

         Item 2(e)    CUSIP Number:
                      292740107

         Item 3        If  the  Statement  is  being  filed  pursuant  to  Rule
                      13d-1(b), or 13d-2(b),  check whether the person filing is
                      a:

                      JHMLICO:  (c) (X) Insurance Company as defined in ss.3(a)
                                        (19) of the Act.

                                (e) (X)  Investment  Adviser  registered
                                         under   ss.203  of  the   Investment
                                         Advisers Act of 1940.

                                (g) (X)  Parent   Holding   Company,   in
                                         accordance with ss.240.13d-1(b)(ii)(G).

                      JHSI:     (g) (X) Parent Holding Company, in accordance 
                                        with ss.240.13d-1(b)(ii)(G).

                      TBFG:     (g) (X) Parent Holding Company, in accordance 
                                        with ss.240.13d-1(b)(ii)(G).

                      JHA:      (e) (X) Investment Adviser registered under 
                                        ss.203 of the Investment Advisers Act 
                                        of 1940.

                                            PAGE  6  OF  9  PAGES

<PAGE>





         Item 4       Ownership:

                      (a)    Amount   Beneficially   Owned:   JHA   has   direct
                             beneficial  ownership of 0 shares of Common  Stock.
                             Through  their  parent-subsidiary  relationship  to
                             JHA,   JHMLICO,   JHSI  and  TBFG  have   indirect,
                             beneficial ownership of these same shares.


                      (b)    Percent of Class:  0.0%


                      (c)  (i)   sole power to vote or to direct the vote:  -0-


                           (ii)  shared power to vote or to direct the vote: -0-


                           (iii) sole power to dispose or to direct the 
                                 disposition of: -0-


                           (iv)  shared power to dispose or to direct the 
                                 disposition of:     -0-


         Item 5       Ownership of Five Percent or Less of a Class:
                      With this filing the Reporting Persons state that they own
                      no shares of the class.

         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:
                      Not applicable.

         Item 8       Identification and Classification of Members of the Group:
                      Not applicable.

         Item 9       Notice of Dissolution of a Group:
                      Not applicable.

         Item 10      Certification:
                      By signing below the  undersigned  certifies  that, to the
                      best of its knowledge and belief, the securities  referred
                      to above were acquired in the ordinary  course of business
                      and were not  acquired  for the purpose of and do not have
                      the effect of changing or  influencing  the control of the
                      issuer  of  such  securities  and  were  not  acquired  in
                      connection  with or as a  participant  in any  transaction
                      having such purpose or effect.









                                PAGE 7 OF 9 PAGES


<PAGE>


                                                     SIGNATURE

         After  reasonable  inquiry and to the best of its knowledge and belief,
each of the  undersigned  certifies  that  the  information  set  forth  in this
statement is true, complete and correct.


                                    John Hancock Mutual Life Insurance Company

                                    By:      /s/John T. Farady
                                             -----------------------------------
                                    Name:    John T. Farady
Dated: February 17, 1998            Title:   Senior Vice President & Treasurer


                                    John Hancock Subsidiaries, Inc.

                                    By:      /s/JohnT. Farady
                                             -----------------------------------
                                    Name:    John T. Farady
Dated: February 17, 1998            Title:   Treasurer


                                    The Berkeley Financial Group

                                    By:      /s/Susan S. Newton
                                             -----------------------------------
                                    Name:    Susan S. Newton
Dated: February 17, 1998            Title:   Vice President


                                    John Hancock Advisers, Inc.

                                    By:      /s/Susan S. Newton
                                             -----------------------------------
                                    Name:    Susan S. Newton
Dated: February 17, 1998            Title:   Vice President


                                                 PAGE 8 OF 9 PAGES


<PAGE>


EXHIBIT A
                                              JOINT FILING AGREEMENT

John Hancock Mutual Life Insurance Company, John Hancock Subsidiaries, Inc., The
Berkeley  Financial  Group  and  John  Hancock  Advisers,  Inc.  agree  that the
Terminating  Schedule 13G, Amendment No. 1, to which this Agreement is attached,
relating to the Common Stock of Energy Ventures, Inc. is filed on behalf of each
of them.



                                    John Hancock Mutual Life Insurance Company

                                    By:      /s/John T. Farady
                                             -----------------------------------
                                    Name:    John T. Farady
Dated: February 17, 1998            Title:   Senior Vice President & Treasurer

                                    John Hancock Subsidiaries, Inc.

                                    By:      /s/John T. Farady
                                             -----------------------------------
                                    Name:    John T. Farady
Dated: February 17, 1998            Title:   Treasurer


                                    The Berkeley Financial Group

                                    By:      /s/Susan S. Newton
                                             -----------------------------------
                                    Name:    Susan S. Newton
Dated: February 17, 1998            Title:   Vice President


                                    John Hancock Advisers, Inc.
                                    By:      /s/Susan S. Newton
                                             -----------------------------------
                                    Name:    Susan S. Newton
Dated: February 17, 1998            Title:   Vice President

                                                 PAGE 9 OF 9 PAGES



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