AMENDMENT NO. 2
                                       TO
                          REGISTRATION RIGHTS AGREEMENT


       THIS AMENDMENT NO. 2 TO REGISTRATION  RIGHTS AGREEMENT (this "Amendment")
is made as of January 23, 1998, by and between Black Warrior  Wireline  Corp., a
Delaware  corporation (the "Company"),  and St. James Capital Partners,  L.P., a
Delaware limited partnership (the "Purchaser").

       WHEREAS,  on June 5, 1997,  the Company and the Purchaser  entered into a
Registration  Rights Agreement (the "Original  Registration  Rights Agreement"),
pursuant to which the Company granted the Purchaser certain  registration rights
in respect of the Shares (as such term is defined in the  Original  Registration
Rights Agreement);

       WHEREAS,  on June 5, 1997,  the  Purchaser  acquired  from the  Company a
Convertible  Promissory Note (the "Original  Convertible  Note") in the original
principal  amount of $2,000,000,  which is convertible into the number of shares
as set forth in the Original  Convertible  Note (the "Original  Convertible Note
Shares") of the Company's  common stock, par value $.0005 per share (the "Common
Stock");

       WHEREAS,  on June 5, 1997, the Company issued Warrants to Purchase Common
Stock of the Company  (the  "Original  Warrants")  to Purchaser in respect of an
aggregate of 666,000 shares of Common Stock (the "Original Warrant Shares");

       WHEREAS,  pursuant to the terms of the  Agreement  for  Purchase and Sale
dated as of  October  10,  1997  between  the  Company  and the  Purchaser,  the
Purchaser  agreed to purchase a 7% Convertible  Promissory Note from the Company
to Purchaser dated as of the date hereof,  in the original  principal  amount of
$2,900,000 (the "Second Note"), which is convertible into shares of Common Stock
(the "Second Note Shares");

       WHEREAS, as of October 10, 1997, the Company issued Warrants (the "Second
Warrants")  to the  Purchaser in respect of an  aggregate  of 725,000  shares of
Common Stock (the "Second Warrant Shares");

       WHEREAS,  pursuant to Amendment No. 1 to  Registration  Rights  Agreement
dated as of October 10, 1997  between  the  Company  and  Purchaser  ("Amendment
One"),  the  Company the  Purchaser  amended the  Original  Registration  Rights
Agreement  to, among other  matters,  grant the Purchaser  certain  registration
rights in respect of the Original  Convertible  Note Shares,  the Second Warrant
Shares and the Second Note Shares, as set forth therein;

       WHEREAS,  pursuant to the terms of the  Agreement  for  Purchase and Sale
dated as of the date hereof between the Company and the Purchaser, the Purchaser
has agreed to purchase an 8% Convertible Promissory Note from the Company to the
Purchaser dated as of the date hereof, in the original principal amount of up to
$10,000,000 (the "Third Note"), which is convertible into shares of Common Stock
(the "Third Note Shares");






       WHEREAS,  as of the date hereof,  the Company issued Warrants (the "Third
Warrants") to the Purchaser, which may be exercised to purchase shares of Common
Stock at $6.75 per share, subject to adjustment (the "Third Warrant Shares");

       WHEREAS,  the Company wishes to grant the Purchaser certain  registration
rights in respect of the Third Warrant Shares and the Third Note Shares,  as set
forth herein;

       WHEREAS,  the Company  wishes to amend the Original  Registration  Rights
Agreement as amended by Amendment One, as set forth herein;

       NOW, THEREFORE, in consideration of the mutual promises and covenants set
forth herein, the parties hereby agree as follows:

       1.  Each  reference  in the  body  of the  Original  Registration  Rights
Agreement to the Shares shall  hereafter  refer to,  collectively,  the Original
Warrant Shares,  the Original  Convertible Note Shares,  the Second Note Shares,
the Second Warrant Shares, the Third Note Shares and the Third Warrant Shares.

       2.  Each  reference  in the  body  of the  Original  Registration  Rights
Agreement  to Warrants  shall  hereafter  refer to,  collectively,  the Original
Warrants, the Second Warrants and the Third Warrants.

       3. Section 1.3 of the Original  Registration  Rights  Agreement  shall be
revised to read in its entirety as follows:

              "1.3 "Registrable  Securities" shall mean (i) the Shares; and (ii)
       any Common  Stock  issued or issuable at any time or from time to time in
       respect   of  the   Shares   upon  a   stock   split,   stock   dividend,
       recapitalization  or other similar event involving the Company until such
       Shares  are  registered  pursuant  to a  Registration  Statement  or  the
       exemption from  registration  under Rule 144(k) (or successor Rule) under
       the Securities Act is available with respect to the Shares."

       4. By  their  execution  of this  Amendment,  both  the  Company  and the
Purchaser  agree to be a party  to,  and bound  by,  the  terms of the  Original
Registration Rights Agreement, as amended by Amendment One and this Amendment.

       5. This  Amendment  shall be governed in all  respects by the laws of the
State of Delaware.

       6. All other terms and  conditions  of the Original  Registration  Rights
Agreement shall be and remain the same and in full force and effect.

       7. Capitalized terms used but not otherwise defined herein shall have the
meaning given them in the Original Registration Rights Agreement.

       8. This Amendment may be executed in any number of counterparts,  each of
which  shall  be  enforceable   against  the  parties  actually  executing  such
counterparts, and all of which together shall constitute one instrument.


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                          THE COMPANY'S SIGNATURE PAGE


       IN WITNESS  WHEREOF,  the Company has executed this  Amendment  effective
upon the date first set forth above.




                                          BLACK WARRIOR WIRELINE CORP.



                                          By:
                                                William L. Jenkins, President


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                         THE PURCHASER'S SIGNATURE PAGE

       IN WITNESS  WHEREOF,  the Purchaser  has signed this  Amendment as of the
date first written above.

 
                               ST. JAMES CAPITAL PARTNERS, L.P.


                               By:  St. James Capital Corp., its General Partner



                               By:
                                  ----------------------------------------------
                                              John Thompson, President


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