AGREEMENT FOR PURCHASE AND SALE

     This Agreement for Purchase and Sale (the "Agreement"), is made and entered
as of October 9, 1997, by and between Black Warrior  Wireline  Corp., a Delaware
corporation ("Black Warrior"),  and St. James Capital Partners, L.P., a Delaware
limited  partnership  ("Purchaser"),  and sets forth the terms and conditions of
the  sale  and  purchase  of  a  $2,900,000  7%  Convertible   Promissory  Note,
substantially  in the form  attached  hereto  as  Exhibit  A (the  "Note").  For
purposes of this  Agreement,  the term "Seller" is defined to mean Black Warrior
and the Active Subsidiary (defined in Section 2.8 below).

     WHEREAS,  Seller and  Purchaser  are parties to that  certain  agreement in
principal  relating to the  transaction,  which agreement was executed by Seller
and Purchaser on September 10, 1997,  setting forth the agreement of the parties
regarding  the  major  terms of the  transaction,  which the  parties  desire to
further formalize and record by this Agreement.

     WHEREAS,  Seller  desires  to issue and sell to  Purchaser,  and  Purchaser
desires to purchase and accept from  Seller,  the Note in the form of Exhibit A,
on the terms and subject to the conditions set forth herein.

     WHEREAS,  the  obligations  of Seller  under the Note are  secured  by that
certain Borrower Security Agreement dated as of June 5, 1997, between Seller and
Purchaser,  which is  hereby  amended  and  modified  pursuant  to that  certain
Amendment and Ratification of Borrower Security  Agreement  substantially in the
form  attached  hereto as  Exhibit  B-1 (the  "Amendment  of  Borrower  Security
Agreement"),  by that certain  Subsidiary  Security Agreement (herein so called)
dated  as of June 5,  1997,  between  the  subsidiaries  of  Black  Warrior  and
Purchaser,  which is  hereby  amended  and  modified  pursuant  to that  certain
Amendment and Ratification of Subsidiary  Security  Agreement,  substantially in
the form attached hereto as Exhibit B-2 (the  "Amendment of Subsidiary  Security
Agreement"),  and are guaranteed by that certain Subsidiary Guaranty dated as of
June 5, 1997, by the subsidiaries of Black Warrior in favor of Purchaser,  which
is amended and modified  pursuant to that certain  Amendment and Ratification of
Subsidiary  Guaranty  substantially  in the form attached  hereto as Exhibit B-3
(the "Amendment of Subsidiary Guaranty").

     WHEREAS,  Seller  and  Purchaser  desire to make  certain  representations,
warranties and  agreements in connection  with the purchase and sale of the Note
contemplated hereby.




     WHEREAS,  Seller  desires to sell to  Purchaser  warrants  ("Warrants")  to
purchase  725,000 shares of Seller's  Common Stock,  par value $0.0005 per share
(the "Common Stock"),  which Warrants shall have the terms and be subject to the
conditions set forth in the form of Warrants attached hereto as Exhibit C.

     WHEREAS,  Seller desires to grant to Purchaser certain  registration rights
in respect of the  shares of  Seller's  Common  Stock  that may be  acquired  on
conversion of the Note and on the exercise of the Warrants,  which  registration
rights  shall have the terms and be subject to the  conditions  set forth in the
Registration  Rights Agreement dated as of June 5, 1997, as amended and modified
by that certain Amendment No. 1 to Registration  Rights Agreement  substantially
in the form attached hereto as Exhibit D (the "Amendment to Registration  Rights
Agreement").

     WHEREAS, this Agreement, the Note, the Amendment to Security Agreement, the
Amendment  to  Subsidiary  Security  Agreement,   the  Amendment  to  Subsidiary
Guaranty,  the Warrants,  and the Amendment to Registration Rights Agreement are
collectively referred to herein as the "Transaction Documents".

     NOW, THEREFORE,  in consideration of the premises and the  representations,
warranties and agreements herein, the parties agree as follows:

                                    ARTICLE I

                                PURCHASE AND SALE

     1.1 Purchase and Sale of the Note and the Warrants. Subject to the terms of
this  Agreement,  Seller agrees to and does hereby  issue,  sell and deliver the
Note and the  Warrants to  Purchaser  at the Closing  (as defined  herein),  and
Purchaser  agrees  to and  does  hereby  purchase  and  accept  the Note and the
Warrants from Seller.

     1.2  Consideration  for Purchase of the Note.  Subject to the terms of this
Agreement,  Purchaser hereby agrees to pay to Seller,  by check or wire transfer
to the account of Seller,  $2,900,000,  as the consideration for the purchase of
the Note (the "Note Consideration"). It is the intention of the parties that the
Note Consideration shall be advanced in multiple advances, with $2,900,000 being
paid  at  the  time  of the  closing  of  Seller's  acquisition  of  Diamondback
Directional,  Inc.  Interest  under the Note shall  accrue on  amounts  actually
advanced.

     1.3  Consideration  for Purchase of the  Warrants.  Subject to the terms of
this Agreement, Purchaser hereby agrees to pay to Seller at Closing, by check or
wire  transfer  to the  account of Black  Warrior,  $36,250  (or $0.05 per share
subject to the Warrants) as the  consideration  for the purchase of the Warrants
(the  "Warrant   Consideration";   the  Note   Consideration   and  the  Warrant
Consideration are collectively referred to herein as the "Consideration").

     1.4  Origination  Fee. Seller agrees to pay Purchaser at Closing a one-time
origination fee in the amount of $36,250 (the "Origination Fee") for the payment
of the Note Consideration.

     1.5  Subordination  to Future  Financing.  Purchaser  agrees to enter  into
subordination  agreements with senior secured lenders that provide  financing to
Seller in an amount  not to exceed  $4,500,000  with  respect to a term loan and
$3,000,000  with respect to a revolving  credit  facility (in this section,  the
"Senior  Lenders"),  pursuant to which Purchaser would  subordinate its security
interests and rights to the  indebtedness  and security  interests of the Senior
Lenders.  Such  subordination  agreements  shall  be  on  terms  and  conditions
acceptable  to all parties  (including  Purchaser,  which agrees to negotiate in
good faith with  respect to the  subordination  agreement)  at the time they are
entered into.  Such  subordination  agreements  shall not obligate  Purchaser to
"stand  still"  for a period of time  longer  than 120 days  after a default  by
Seller in its obligations to the Senior Lender(s).


                                       2


     1.6  Future  Financings.  If  Seller,  at any  time so long as the  Note is
outstanding,  intends  to  issue or sell  any  shares  of  capital  stock,  debt
securities or securities  convertible into,  exchangeable for or exercisable for
shares of capital stock or debt  securities (a  "Financing"),  Seller shall give
Purchaser  written  notice (the "Offer") of its intent to engage in a Financing,
specifying its basic terms and conditions.  If Purchaser gives notice to Seller,
specifying  Purchaser's  basic  terms and  conditions,  of its intent to provide
Financing on a basis  materially  similar to the proposal set forth in the Offer
within five (5) business days after receipt of the Offer (a "Financing Notice"),
then Seller shall be obligated to consummate  the Financing  only with Purchaser
and Purchaser  shall be obligated to provide the financing at the time committed
by the third party whose  commitment  gave rise to the Offer.  If Purchaser does
not within five (5)  business  days after  receipt of the Offer give to Seller a
Financing Notice, Purchaser shall be deemed to have waived its rights to provide
the  Financing  under  this  Section,  and  Seller may  thereafter  obtain  such
Financing from a third party or parties if such third party  Financing is on the
same basic terms and  conditions  as those set forth in the Offer.  Any proposed
Financing on terms materially different from those basic terms and conditions in
the Offer deemed waived by Purchaser shall require a new Offer and compliance by
Seller with the  provisions  of this  Section.  Notwithstanding  the  foregoing,
Seller shall not be required to comply with this Section in connection with: (i)
the issuance and sale of Common Stock or  convertible  securities  in connection
with any employee  stock option plan,  arrangement or agreement now or hereafter
in effect;  (ii) the  issuance of capital  stock of Seller upon  exercise of the
Warrants or otherwise issued to Purchaser or its assigns;  (iii) the issuance of
capital stock upon exercise of any stock purchase  warrant or option (other than
the  options  referred  to in clause  (i) above) or other  convertible  security
outstanding on the date hereof or hereafter  issued;  (iv) a public  offering of
securities;  (v) any loan from a regular  commercial lending source; or (vi) any
securities issued with the favorable vote of Purchaser's  designee as a director
of the Seller.

     1.7 Other Permitted Debt.  Seller shall be permitted to incur  indebtedness
for  borrowed  money for the  purchase or financing of equipment in the ordinary
course of business, in an amount not to exceed $2,500,000.


                                   ARTICLE II

                    REPRESENTATIONS AND WARRANTIES OF SELLER

     Seller  represents  and  warrants to Purchaser  that each of the  following
statements (i) are true and correct on the date hereof and (ii) will be true and
correct  in all  material  respects  on  the  date  each  advance  of  the  Note
Consideration is made:

     2.1 Organization,  Standing and Qualification. Seller is a corporation duly
organized,  validly existing and in good standing under the laws of the state of
its  incorporation  and has all requisite  corporate power and authority to own,
lease and operate its properties and to carry on its business as it is now being
conducted.  Seller  is  licensed  and  qualified  to do  business  as a  foreign
corporation in each jurisdiction in which the character of Seller's  properties,
owned or leased,  or the nature of its activities  makes such  qualification  or
license necessary.


                                       3


     2.2 Authority;  No Defaults.  Seller has all requisite  corporate power and
authority  to  enter  into  the  Transaction  Documents  and to  consummate  the
transactions contemplated thereby. The execution and delivery of the Transaction
Documents and the  consummation of the  transactions  contemplated  thereby have
been duly  authorized by all necessary  corporate  action on the part of Seller.
The  Transaction  Documents  have been  executed  and  delivered  by Seller  and
constitute the valid and binding obligation of Seller, enforceable in accordance
with  their  terms,  subject to  bankruptcy,  insolvency,  moratorium  and other
similar laws affecting  creditors'  rights  generally and general  principles of
equity (regardless of whether such  enforceability is considered in a proceeding
in equity or at law). The execution and delivery of the Transaction Documents do
not, and the  consummation of the transactions  contemplated  hereby and thereby
will not,  conflict  with or result  in a breach of or the  acceleration  of any
obligation  under,  or constitute a default or event of default (or event which,
with  notice or lapse of time or both,  would  constitute  a default or event of
default) under, any provision of any charter, bylaw, indenture,  mortgage, lien,
lease, agreement,  contract,  instrument,  order, judgment, decree, ordinance or
regulation,  or any restriction to which any property of Seller is subject or by
which  Seller is bound,  the  effect of which  would be  materially  adverse  to
Seller.  Seller is not, nor does Seller have knowledge that it is alleged to be,
in material violation or default of any applicable law, statute,  order, rule or
regulation  promulgated or judgment entered by any court,  administrative agency
or  commission  or other  governmental  agency or  instrumentality,  domestic or
foreign (a  "Governmental  Entity"),  relating to or  affecting  the  operation,
conduct or ownership of the property or business of Seller.

     2.3 Approvals.  There is no legal  impediment to the execution and delivery
of  the  Transaction   Documents  by  Seller  or  to  the  consummation  of  the
transactions  contemplated  thereby,  and no filing  or  registration  with,  or
authorization,  consent or approval of, a Governmental  Entity,  shareholders or
any  other  third  party is  necessary  for the  consummation  by  Seller of the
transactions contemplated thereby.

     2.4 Charter and Bylaws. Seller has furnished to Purchaser true and complete
copies of its charter and bylaws,  each as amended to date and as  presently  in
effect.

     2.5 SEC Documents.  (a) Seller has made all filings with the Securities and
Exchange  Commission  ("SEC")  that  it has  been  required  to make  under  the
Securities Act of 1933, as amended (the  "Securities  Act"),  and the Securities
Exchange Act of 1934, as amended (the  "Exchange  Act") since December 31, 1994.
Seller has provided to Purchaser  true,  complete and correct copies of Seller's
annual  report on Form 10-K  ("Seller's  Form  10-K") for the fiscal  year ended
December 31, 1996,  together with all  amendments  thereto,  Seller's  quarterly
report on Form 10-Q for the fiscal  quarters  ended  March 31, 1997 and June 30,
1997, together with all amendments thereto, and any and all filings with the SEC
made by Seller  (including  all requested  exhibits to such  filings)  since the
filing of said Form 10-K (all such  documents that have been filed with the SEC,
as  amended,  are  referred  to as the  "Seller  SEC  Documents").  As of  their
respective  dates, and except as amended,  Seller SEC Documents  complied in all
material  respects with the  requirements  of the Securities Act or the Exchange
Act, as the case may be, and none of Seller SEC  Documents  contained any untrue
statement of a material  fact or omitted to state a material fact required to be
stated  therein or necessary  to make the  statements  therein,  in light of the
circumstances under which they were made, not misleading.


                                       4


        (b) The financial  statements of Seller included in Seller SEC Documents
comply  as  to  form  in  all  material  respects  with  applicable   accounting
requirements  and with  the  published  rules  and  regulations  of the SEC with
respect  thereto,  have been  prepared in  accordance  with  generally  accepted
accounting  principles ("GAAP") applied on a consistent basis during the periods
involved (except as may be indicated in the notes thereto or, in the case of the
unaudited statements, as permitted by Form 10-Q) and fairly present (subject, in
the case of the unaudited statements, to normal recurring audit adjustments) the
consolidated  financial  position  of  Seller as of the  dates  thereof  and the
consolidated  results  of its  operations  and cash flows for the  periods  then
ended.  Since June 30, 1997, (i) there have been no material  adverse changes in
Seller's  business,   operations  or  financial   condition  and  (ii)  Seller's
operations  have been  conducted  in the ordinary  course of business  except as
disclosed in writing to Purchaser.

     2.6 Litigation. Except as set forth on Schedule 2.6, as of the date of this
Agreement,  there is no suit, action, proceeding or investigation pending or, to
the best knowledge of Seller,  threatened  against or affecting  Seller,  nor is
there any  outstanding  judgment,  order,  writ,  injunction  or decree  against
Seller, which judgment would have a material adverse effect on Seller. Seller is
not subject to any court order, writ, injunction,  decree,  settlement agreement
or  judgment  that  contains  or  orders  any  on-going   obligations,   whether
prohibitory  or  mandatory  in nature,  the  performance  of which  would have a
material adverse effect on Seller.

     2.7   Capitalization.   Black  Warrior  has  authorized  capital  stock  of
12,500,000  shares of Common Stock of which,  as of the date  hereof,  there are
2,250,216  shares  issued and  outstanding.  All of the  issued and  outstanding
shares of Common  Stock  were duly and  validly  issued  and are fully  paid and
non-assessable.  None of the outstanding  shares of Common Stock has been issued
in violation of any  preemptive  rights of the current or past  stockholders  of
Seller.  As of the date hereof,  Black  Warrior has reserved for issuance (i) an
aggregate  of 653,750  shares of Common  Stock  issuable  on  issuance  of stock
options  to  employees,  officers,  directors  and  other  persons  and  (ii) an
aggregate of 1,202,750  shares of Common Stock issuable on exercise  outstanding
warrants,  options, or of convertible  securities other than those listed in (i)
above.  Except as set forth on Schedule 2.7 or described  above in (i) and (ii),
there are no  outstanding  options,  warrants  or rights to  subscribe  for,  or
commitments  of any  character  whatsoever  relating to, or securities or rights
convertible  into or  exchangeable  for,  shares of the  capital  stock of Black
Warrior or contracts, commitments, understandings or arrangements by which Black
Warrior is or may be obligated to issue  additional  shares of its capital stock
or options,  warrants, or rights to purchase or acquire any additional shares of
its  capital  stock.  All of the  Common  Stock  issued on the  exercise  of the
Warrants  will  be  fully  paid,  non-assessable  and  free  and  clear  of  any
Encumbrances.  As used in this  Agreement,  the  term  "Encumbrance"  means  and
includes (i) any  security  interest,  mortgage,  deed of trust,  lien,  charge,
pledge,  proxy, adverse claim, equity, power of attorney,  or restriction of any
kind,  including  but not limited to, any  restriction  or servitude on the use,
transfer,  receipt of income,  or other exercise of any attributes of ownership,
and (ii) any Uniform Commercial Code financing statement or other public filing,
notice or record that by its terms  purports  to  evidence or notify  interested
parties  of any of the  matters  referred  to in  clause  (i)  that has not been
terminated or released by another proper public filing, notice or record.

     2.8  Subsidiaries.  Schedule 2.8 sets forth the only active  subsidiary  of
Seller,  including state or country of organization and address of its principal
executive offices ("Active Subsidiary").  For purposes of this Agreement and the
other  agreements  contemplated  hereby,  the  Active  Subsidiary  is  the  only
"subsidiary" of Seller.  Schedule 2.8 also discloses four inactive  corporations
and/or limited partnerships owned by Seller (the ("Inactive Organizations"), all
four of  which  are at this  time  inactive,  defunct,  and  have no  value.  No
representation,   warranty,  financial  standard  or  other  provision  of  this
Agreement,  or any agreement  contemplated  hereby,  shall be deemed violated by
virtue  of the fact  that any of the  Inactive  Organizations  do not meet  said
representation, warranty, financial standard or other provision. However, if any
Inactive  Organization  begins to conduct any business (other than activities to
"wind down" such organization) such Inactive Organization shall be considered an
Active  Subsidiary  (and cease to be an Inactive  Organization)  from that point
forward. The Active Subsidiary is a corporation duly organized, validly existing
and in good standing under the laws of the jurisdiction of its organization, has
all requisite  corporate  power and authority to own, to lease or to operate its
properties and to carry on its business as it is now being conducted and is duly
qualified or licensed to do business in each jurisdiction in which the character
of its properties,  owned or leased,  or the nature of its activities makes such
qualification  or license  necessary,  unless the  failure to be so  licensed or
qualified  would not have a material,  adverse  effect on Seller.  Except as set
forth in Schedule  2.8, all  outstanding  shares of capital  stock of the Active
Subsidiary  were duly and validly issued and are fully paid,  nonassessable  and
owned by Seller or a subsidiary of Seller,  free and clear of all  Encumbrances.
There are no  options,  warrants  or other  rights,  agreements  or  commitments
(including  preemptive  rights)  obligating  Seller or the Active  Subsidiary to
issue, to sell or to transfer any shares of capital stock or other securities of
the  Active  Subsidiary.  There  are 151  shares  of  capital  stock  of  Active
Subsidiary issued and outstanding, all of which has been pledged to Purchaser.


                                       5


     2.9  Liabilities.  Except  as set  forth in  Schedule  2.9,  Seller  has no
liabilities or obligations,  either accrued, absolute,  contingent, or otherwise
that have a material  adverse  effect on the value or  business  of Seller,  and
Seller has no knowledge of any potential  liability that it reasonably  believes
would  likely  result in a material  adverse  effect on the value or business of
Seller, other than those (a) reflected or reserved against in the balance sheets
reported on Seller's  Form 10-Q for the fiscal  quarter  ended June 30, 1997, or
(b) incurred in the ordinary course of business since June 30, 1997.

     2.10 Licenses,  Permits,  Authorizations,  Etc. Seller holds all approvals,
authorizations,  consents,  licenses, orders, franchises,  rights, registrations
and permits of any type required to operate its business as presently conducted.
The  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions   contemplated   hereby   will  not   result  in  any   revocation,
cancellation,  suspension or modification  of any such approval,  authorization,
consent license, order, franchise, right, registration or permit.

     2.11 Title to Assets; Encumbrances. Except as set forth in Schedule 2.11:

          (a)  Seller has good and  indefeasible  title to its  assets,  whether
     real, personal or intangible, free and clear of all Encumbrances except (i)
     liens for current taxes and  assessments  not yet due or being contested in
     good faith by appropriate proceedings,  (ii) mechanic's liens arising under
     the  operation  of law for  actions  contested  in good  faith or for which
     payment  arrangements  have been made,  (iii) liens  granted or incurred by
     Seller in the ordinary  course of its  business or financing of  equipment,
     office  space,  furniture  and  computers  in the  ordinary  course  of its
     business,  and  (iv)  easements,  rights  of way,  encroachments  or  other
     restrictions  or matters  affecting  title  which do not prevent the assets
     from being used for the purpose for which they are currently being used;

          (b) There are no parties in  possession of any of the assets of Seller
     other than personal  property held by third parties in the  reasonable  and
     ordinary course of business. Seller enjoys full, free and exclusive use and
     quiet  enjoyment of its assets and its rights  pertaining  thereto.  Seller
     enjoys peaceful and undisturbed  possession under all leases under which it
     is a lessee, and all such leases are legal,  valid and binding  obligations
     of Seller, enforceable against Seller in accordance with its terms.

     2.12 Taxes and  Returns.  Seller has filed all  required  tax  returns  and
reports.  Seller has paid all taxes,  assessments and  governmental  charges and
penalties which it has incurred, except such as are being or may be contested in
good faith by appropriate  proceedings.  Seller is not delinquent in the payment
of any tax,  assessment or governmental  charge.  No deficiencies  for any taxes
have been proposed,  asserted,  or assessed against Seller,  and no requests for
waivers of the time to assess any such tax are pending. For the purposes of this
Agreement,  the term  "tax"  (including,  with  correlative  meaning,  the terms
"taxes" and  "taxable")  shall  include all  federal,  state,  local and foreign
income, profits,  franchise,  gross receipts,  payroll, sales, employment,  use,
property,  withholding,  excise and other taxes,  duties or  assessments  of any
nature whatsoever,  together with all interest,  penalties and additions imposed
with respect to such amounts.


                                       6


     2.13  Insurance.  Each  policy  of  property,  fire and  casualty,  product
liability, worker's compensation, professional liability and title insurance and
other forms of insurance (except group,  health and life policies) and each bond
issued  or  posted  by any  person  with  respect  to any  operations  or  other
activities  of Seller  is, to the  knowledge  of Seller,  the  legal,  valid and
binding obligation of the insurer or bond issuer, enforceable in accordance with
its terms,  and is in an amount and provides for coverage as is customary in the
ordinary business practices of Seller's industry.

     2.14 Patents, Trademarks, Etc. Seller has no patents,  trademarks,  service
marks, works of authorship,  tradenames, brandnames or copyrights. Seller is not
using,  and does not have any plan to  manufacture,  use or sell anything  which
would violate or infringe on any patent or proprietary right (of which Seller is
aware) of any other person, firm or corporation or which would require a license
under  any such  patent  or  proprietary  right.  Seller  has not  received  any
communications  alleging that Seller has violated or, by conducting its business
as  proposed,  would  violate any of the  patents,  trademarks,  service  marks,
tradenames,   copyrights,   works  of  authorship  or  trade  secrets  or  other
proprietary rights in processes of any other person or entity.

     2.15 Material  Contracts and Obligations.  Attached hereto as Schedule 2.15
is a list of all material agreements of any nature to which Seller is a party or
by which it or any of its properties is bound, including without limitation, the
Master Service  Agreement with the ten top customers (based on dollar volume) of
Seller,  all employment  and consulting  agreements,  loan  agreements,  leases,
purchase  contracts,  employee  benefit,  bonus,  pension,  stock option,  stock
purchase  and  similar  plans  and  arrangements,   and  distributor  and  sales
representative  agreements.  True and complete copies of such written agreements
have been provided to Purchaser.  All such  agreements  and contracts are valid,
binding  and in full  force and  effect.  Seller is not in default on any of the
agreements listed on Schedule 2.15.

     2.16  Compliance.  Except as set forth on Schedule 2.16 Seller has complied
in all material  respects with all laws,  and is not in violation of any charter
or other corporate restrictions or any law, ordinance, requirement,  regulation,
judgment,  injunction, award, decree, or other order applicable to its business.
There is no term or provision of any mortgage, indenture, contract, agreement or
instrument to which Seller is a party or by which it is bound,  any provision of
any state or federal judgment, decree, order, injunction, writ, statute, rule or
regulation  applicable  to or binding upon Seller,  which  materially  adversely
affects  or,  in the  future is  reasonably  likely  to  affect  materially  and
adversely the business, prospects, condition, affairs or operations of Seller or
any of its  properties  or assets.  To the  knowledge of Seller,  no employee of
Seller is in violation of any term of any employment  contract,  patent or other
proprietary  information disclosure agreement or any other contract or agreement
relating to the employment of such employee with Seller.

     2.17 Employees.  Seller has obtained employment  agreements,  some of which
contain nondisclosure and assignment of invention provisions and non-competition
provisions,  with Seller from some  employees  and  consultants  of Seller whose
employment  responsibility  requires  access  to  confidential  and  proprietary
information of Seller, in a form satisfactory to Purchaser.  Seller has complied
in all material respects with all applicable and material state and federal laws
respecting  employment  and  employment  practices,   terms  and  conditions  of
employment,  wages and hours and other laws related to employment, and there are
no arrears in the payment of wages, or social security taxes.


                                       7


     2.18 Transactions with Affiliates and Stockholders.  Except as set forth on
Schedule 2.18, no stockholder,  officer, director or employee of Seller, nor any
"affiliate"  or  "associate"  of such  persons (as such terms are defined in the
rules and  regulations  promulgated  under the  Securities  Act), is presently a
party  to  any  transaction  with  Seller,  including  without  limitation,  any
contract,  agreement  or other  arrangement  providing  for the  employment  of,
furnishing of services by, rental of real or personal property from or otherwise
requiring payments to, any such person or entity.

     2.19 Use of Proceeds. Seller will not use the Consideration,  except to (i)
fund Seller's  acquisition  of the assets of  Diamondback  Directional,  Inc., a
Texas  corporation  (the  "Acquisition");  and  (ii)  pay  attorneys'  fees  and
transactional  costs  in  connection  with  this  Agreement  and all  agreements
contemplated  hereby, as well as pursuant to that certain Agreement for Purchase
and Sale dated  June 5, 1997.  Seller  shall not use the  Consideration  for any
other purpose without the prior consent of Purchaser.

     2.20 Books and Records.  The minute books of Seller furnished to counsel to
Purchaser for review contain  complete and accurate  records of all meetings and
other  corporate  actions of its  stockholders  and its Board of  Directors  and
committees  thereof.  The stock  ledger  and stock  transfer  records  of Seller
furnished  by Liberty  Transfer  Company to counsel to  Purchaser  for review is
complete  and  reflects  all  issuances,  transfers  of which  Seller  is aware,
repurchases and cancellations of shares of capital stock of Seller.

     2.21  Stockholder  Agreements.  Except as set forth in Schedule  2.21 or as
contemplated by this Agreement, there are no agreements,  written or oral, which
are (i)  between  Seller and any  holder of its  capital  stock,  or (ii) to the
knowledge  of Seller,  among any persons  holding  five  percent (5%) or more of
Seller's capital stock,  relating to the  acquisition,  disposition or voting of
the capital stock of Seller.

     2.22 ERISA.  Except as disclosed on Schedule  2.22,  seller has no employee
benefit plans subject to the Employment Retirement Income Security Act of 1974.

     2.23 Accounts  Receivable.  All accounts  receivable  of Seller  (including
those  reflected  on the  Balance  Sheet or  acquired on or prior to the Closing
Date) arose in the ordinary  and usual  course of business of Seller,  represent
valid obligations due to Seller and have been collected or are, to Seller's best
knowledge, collectible in the ordinary and usual course of business of Seller in
the aggregate  recorded  amounts  thereof in accordance with their terms less in
the case of accounts  receivable  reflected  in the  Financial  Statements,  all
allowance  for doubtful  accounts  marked  therein,  and in the case of accounts
receivable thereafter, all allowances for doubtful accounts consistent with past
practices of Seller.

     2.24 Hazardous Wastes and Substances.  Neither the operations of Seller nor
the use of its  assets  violates  any  applicable  federal,  state or local law,
statute,  ordinance,  rule,  regulation,  memorandum of understanding,  order or
notice  requirement  pertaining  to  the  collection,  transportation,  storage,
treatment, discharge, release or disposal of hazardous or non-hazardous waste or
substances,  including without  limitation (i) the  Comprehensive  Environmental
Response, Compensation and Liability Act of 1980 (42 U.S.C, ss.ss.9601 et seq.),
as  amended  from  time  to  time  on or  before  the  Closing  Date  ("CERCLA")
(including,  without limitation, as amended pursuant to the Superfund Amendments
and Reauthorization Act of 1986), and such regulations  promulgated under CERCLA
on or before the Closing Date, (ii) the Resources  Conservation and Recovery Act
of 1976 (42 U.S C. ss.ss.6901 et seq.), as amended from time to time ("RCRA") on
or before the Closing Date, and such regulations  promulgated  under RCRA, (iii)
any  applicable  federal,  state or local laws or  regulations  relating  to the
environment  in  effect  on the  Closing  Date  (collectively,  the  "Applicable
Environmental  Laws").  Except  as  disclosed  on  Schedule  2.24,  none  of the
operations  of Seller has ever been  conducted  nor have any of its assets  been
used in such a manner as to  constitute  a  violation  of any of the  Applicable
Environmental  Laws.  No notice  has been  served  on  Seller  by any  person or
Governmental Entity regarding any existing,  pending or threatened investigation
or inquiry  related to violations  under any  Applicable  Environmental  Law, or
regarding any claims for corrective action, remedial obligations or contribution
for  removal  costs or  damages  under  any  Applicable  Environmental  Law,  or
regarding the  designation  of Seller or any of its  affiliates as a potentially
responsible party for any facility under the Applicable  Environmental Laws, nor
does any fact or  circumstance  exist  which,  if disclosed  publicly,  would be
reasonably  likely to result in the service on Seller of any such notice.  There
has been no action taken, or omitted to be taken by Seller which has caused,  or
would be reasonably likely to cause, a "release" of any "hazardous substance" at
any "facility," without limitation,  within the meaning of such terms as defined
in the Applicable Environmental Laws.


                                       8


     2.25  Disclosures.  Neither  this  Agreement  nor any  Exhibit or  Schedule
hereto,  nor any certificate or other  instrument  furnished to Purchaser or its
counsel  by Seller in  connection  with the  transactions  contemplated  hereby,
contains any untrue  statement  of a material  fact or omits to state a material
fact necessary in order to make the statements  contained herein or therein,  in
the light of the circumstances under which they were made, not misleading.

                                   ARTICLE III

                                    COVENANTS

     3.1 New  Subsidiaries.  Seller  agrees that (i) any  Inactive  Organization
which becomes an Active  Subsidiary  after the  execution of this  Agreement and
(ii) any other entity of which Seller obtains  control  (directly or indirectly)
of more  than 50% of the  outstanding  voting  stock or equity  interests  shall
execute a written  agreement  to be bound by that  certain  Subsidiary  Security
Agreements,  dated as of even date herewith,  before the events set forth in (i)
or (ii) above have occurred.

     3.2  Additional  Security  Interests.  Seller  agrees that if any  Inactive
Organization  begins to conduct  any  business  Seller  shall  pledge all of its
interest in such  Inactive  Organization  to secure the Notes by (i) executing a
security  agreement  substantially in the form of that certain Borrower Security
Agreement,  dated as of even date herewith and (ii) delivering all  certificates
representing   the  shares  of  stock  being   pledged,   before  such  Inactive
Organization commences doing business.

     3.3  Conversion of Note;  Registration  of  Securities.  The parties hereto
recognize and acknowledge that Purchaser  previously  purchased from Seller that
certain  $2,000,000  9%  Convertible  Promissory  Note  dated  June 5, 1997 (the
"Original Convertible Note").  Purchaser hereby covenants and agrees to promptly
convert the Original  Convertible  Note  pursuant to its terms,  but only if and
when (i) Seller has filed,  within 60 days of the date  hereof,  a  registration
statement  covering the shares of Common Stock  issuable upon (a)  conversion of
the Original  Convertible Note, (b) exercise of the Warrants dated as of June 5,
1997, to purchase 546,000 and 120,000 shares of Common stock, respectively,  (c)
conversion  of  the  Note  and  (d)  exercise  of the  Warrants  and  (ii)  such
registration  statement  has  been  declared  effective  by the  Securities  and
Exchange Commission.

                                   ARTICLE IV

                                   THE CLOSING

     4.1 Time and Place.  Subject to the  provisions of Section 1.2 herein,  the
closing of the purchase and sale of the Note and the  Warrants  (the  "Closing")
will take place on a date agreed to by the parties (the "Closing Date"),  at the
offices of Gardere Wynne Sewell & Riggs,  L.L.P.,  unless another time and place
are agreed to by the parties.

     4.2  Conditions to the  Obligation of Seller.  The  obligation of Seller to
effect  the  Closing  is  subject  to  Purchaser  delivering,  or  causing to be
delivered, to Seller at the Closing the Consideration.

     4.3 Conditions to the Obligation of Purchaser.  The obligation of Purchaser
to effect the Closing is subject to  satisfactory  completion of the Acquisition
and payment by Seller of the  Origination  Fee. The  obligation  of Purchaser is
further subject to Seller delivering,  or causing to be delivered,  to Purchaser
at the Closing the following documents:


                                       9


        4.3.1 copies,  certified by the Secretary of State of Delaware as of May
27,  1997,  of the  charter of Black  Warrior and all  amendments  thereto and a
certificate  of an Officer of Black Warrior  certifying  that there have been no
amendments  to such  charter  since May 27, 1997,  and copies,  certified by the
Secretary of Active  Subsidiary as of the Closing Date, of the charter of Active
Subsidiary and all amendments thereto;

        4.3.2  copies,  certified by the  Secretary of each of Black Warrior and
Active Subsidiary as of the Closing Date, of the bylaws of each of Black Warrior
and Active Subsidiary, respectively, and all amendments thereto;

        4.3.3  copies,  certified by a  certificate  of the Secretary of each of
Black Warrior and Active  Subsidiary as of the Closing Date, of resolutions duly
adopted  by the  board  of  directors  of  each  of  Black  Warrior  and  Active
Subsidiary,  respectively,  authorizing  the  execution  and delivery by each of
Black Warrior and Active Subsidiary,  respectively, of the Transaction Documents
and all other agreements attached hereto as Exhibits or contemplated herein, the
completion of the sale of the Note and Warrants and the taking of all such other
corporate action as shall have been required as a condition to, or in connection
with, the sale of the Note and Warrants;

        4.3.4 the Agreement;

        4.3.5 the Note;

        4.3.6 the Warrants;

        4.3.7 the Amendment of Registration Rights Agreement;

        4.3.8 the Amendment of Security Agreement;

        4.3.9 the Amendment of Subsidiary Security Agreement;

        4.3.10 the Amendment of Subsidiary Guaranty;

        4.3.11 an opinion of William S. Clarke, P.A., counsel to Seller, in form
and substance  acceptable to Purchaser and  addressing  the matters set forth in
Sections 2.1, 2.2, 2.3, 2.7 and 2.8;

        4.3.12 a  certificate  of an Officer of each of Black Warrior and Active
Subsidiary  to the effect that the  representations  and  warranties  of each of
Black Warrior and Active  Subsidiary,  respectively,  herein  contained shall be
true as of and at the  Closing  Date with the same effect as though made at such
date,  except as affected by  transactions  permitted  or  contemplated  by this
Agreement;  and  further to the  effect  that each of Black  Warrior  and Active
Subsidiary shall have performed and complied with all covenants required by this
Agreement to be performed or complied with by each before the Closing Date; and

        4.3.13 a letter  in favor  of  Purchaser's  lender,  in the form of that
attached hereto as Exhibit F.



                                       10




                                    ARTICLE V
                               GENERAL PROVISIONS

     5.1  Survival  of   Representations,   Warranties   and   Agreements.   The
representations,  warranties  and agreements  contained in this Agreement  shall
survive the Closing.

     5.2 Notices.  All notices or other communications which are required or may
be given  under this  Agreement  shall be in writing and shall be deemed to have
been duly given  when  delivered  in person,  transmitted  by  telecopier  (with
receipt  confirmed)  or mailed by  registered  or  certified  first  class mail,
postage prepaid,  return receipt  requested to the parties hereto at the address
set  forth  below  (as the  same  may be  changed  from  time to time by  notice
similarly  given) or the last known business or residence  address of such other
person as may be designated by either party hereto in writing.

         (a)      If to Seller:

         Black Warrior Wireline Corp.
         3748 Highway #45 North
         Columbus, Mississippi  39701
         Attn:  William L. Jenkins

         (b)      If to Purchaser:

         St. James Capital Partners, L.P.
         c/o St. James Capital Corp.
         1980 Post Oak Boulevard, Suite 2030
         Houston, Texas 77056
         Attn: John L. Thompson

     5.3 Miscellaneous.  This Agreement (i) constitutes the entire agreement and
supersedes all other prior agreements and understandings, both written and oral,
among the parties,  or any of them,  with respect to the subject  matter hereof,
provided, however, this Section 5.3 is not intended to supersede or replace that
certain Agreement for Purchase and Sale dated June 5, 1997 (ii) shall be binding
upon and  inure to the  benefit  of the  parties  hereto  and  their  respective
successors  and assigns and is not  intended to confer upon any other person any
rights or remedies hereunder, (iii) shall be governed in all respects, including
validity,  interpretation  and effect,  by the laws of the State of Delaware and
(iv) may be executed in two or more counterparts which together shall constitute
a single agreement.

     5.4  Publicity.  Seller and Purchaser  promptly  shall advise and cooperate
with the other prior to issuing,  or permitting any of its directors,  officers,
employees or agents to issue,  any press release with respect to this  Agreement
or the transactions contemplated hereby.  Notwithstanding the foregoing, without
the  prior  consent  of  Purchaser,  neither  Seller  nor any of its  directors,
officers,  employees or agents shall issue any press release which  includes the
name of Purchaser or any of Purchaser's affiliates.

     5.5 Assignment.  Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by either of the parties hereto (whether
by operation of law or otherwise) without the prior written consent of the other
party.

     5.6 Schedules. All statements contained in any exhibit, schedule, appendix,
certificate or other instrument delivered by or on behalf of the parties hereto,
or in connection with the transactions contemplated hereby, are an integral part
of this Agreement and shall be deemed representations and warranties hereunder.

     5.7   Counterparts.   This  Agreement  may  be  executed  in  one  or  more
counterparts,  each of which  constitutes  an  original  execution  and,  in the
aggregate, constitute a single document.


                                       11


     5.8 Expense  Reimbursement.  Seller will reimburse to Purchaser,  within 10
days after Purchaser's  presentation of an invoice therefor,  all of Purchaser's
direct  costs  relating  to the  negotiation,  documentation  and closing of the
transactions  contemplated by this Agreement,  including without  limitation the
direct fees and expenses of counsel for Purchaser.

     5.9  Restrictions  on Transfer.  (a) Purchaser  shall not transfer the Note
except by the grant of a security interest to its lender or lenders.  As between
Purchaser  and its  lender or  lenders,  the Note is  transferrable  in the same
manner  and with  the same  effect  as in the  case of a  negotiable  instrument
payable to a  specified  person.  Any lender to which  Holder  grants a security
interest in the Note shall be entitled to exercise  all  remedies to which it is
entitled by contract or by law, including (without limitation)  transferring the
Note into its own name or into the name of any purchaser at any sale  undertaken
in connection with enforcement by such lender of its remedies.

        (b)  Purchaser  shall not  transfer  the  Warrants  or any new  warrants
described in Section 1.4 of this Agreement except to the partners of Purchaser.

     5.10 Expenses of Dispute  Resolution.  If any action at law or in equity is
necessary  to enforce or  interpret  the terms of this  Agreement  or any of the
other  Transaction  Documents,   the  prevailing  party  shall  be  entitled  to
reasonable  attorneys' fees,  costs, and necessary  disbursements in addition to
any other relief to which it may be entitled.



                                       12




                             SELLER'S SIGNATURE PAGE

     IN WITNESS  WHEREOF,  Seller has signed this Agreement as of the date first
written above.


                                                BLACK WARRIOR WIRELINE CORP.


                                                By:
                                                   William L. Jenkins, President




                                       13




                           PURCHASER'S SIGNATURE PAGE

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


                                                ST. JAMES CAPITAL PARTNERS, L.P.

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


                                                By:
                                                    Jay Brown, Vice President