Exhibit 10.2

                             BUSINESS LOAN AGREEMENT


Principal:   $854,350.00

Loan Date:   01-04-2002

Maturity:    01-04-2005.

Borrower:Flotek Industries, Inc. (TIN:   77-0709256);       Lender:  Legacy Bank
         Chemical and Equipment Specialties, Inc. (TIN:     Legacy Bank
         73-1591850); Neal's Technology, Inc. (TIN:         PO Box 1109
         73-1512452); Plainsman Technology, Inc. (TIN:      2024 N.  Hwy 81
         73-1218459); PADKO International Incorporated      Duncan,OK 73534-1109
         (TIN:   73-1443489); Material Translogistics, Inc.
         (TIN:   73-1605226); Esses, Inc. (TIN:
         73-1386155); Turbeco, Inc. (TIN:   76-0228889);
         USA Petrovalve, Inc. (TIN:   76-0448098); Trinity
         Tool, Inc. (TIN:   76-0517268); and Petrovalve, Inc.
         (TIN:   76-0513130)
         7030 Empire Central Drive
         Houston, TX 77040

THIS BUSINESS LOAN AGREEMENT dated January 4, 2002, is made and executed between
Flotek Industries, Inc.; Chemical and Equipment Specialties, Inc.; Neal's
Technology, Inc.; Plainsman Technology, Inc.; PADKO International Incorporated;
Material Translogistics, Inc.; Esses, Inc.; Turbeco, Inc.; USA Petrovalve, Inc.;
Trinity Tool, Inc.; and Petrovalve, Inc. ("Borrower") and Legacy Bank ("Lender")
on the following terms and conditions. Borrower has received prior commercial
loans from Lender or has applied to Lender for a commercial loan or loans or
other financial accommodations, including those which may be described on any
exhibit or schedule attached to this Agreement ("Loan"). Borrower understands
and agrees that: (A) in granting, renewing, or extending any Loan, Lender is
relying upon Borrower's representations, warranties, and agreements as set forth
in this Agreement, and (B) all such Loans shall be and remain subject to the
terms and conditions of this Agreement. TERM. This Agreement shall be effective
as of January 4, 2002, and shall continue in full force and effect until such
time as all of Borrower's Loans in favor of Lender have been paid in full,
including principal, interest, costs, expenses, attorneys' fees, and other fees
and charges, or until January 4, 2005.

CONDITIONS PRECEDENT TO EACH ADVANCE. Lender's obligation to make the initial
Advance and each subsequent Advance under this Agreement shall be subject to the
fulfillment to Lender's satisfaction of all of the conditions set forth in this
Agreement and in the Related Documents.

          Loan  Documents.  Borrower  shall  provide  to  Lender  the  following
          documents for the Loan: (1) the Note; (2) Security Agreements granting
          to  Lender  security  interests  in  the  Collateral;   (3)  financing
          statements  and  all  other  documents  perfecting  Lender's  Security
          Interests;  (4) evidence of insurance as required below;  (5) together
          with all such  Related  Documents  as Lender may require for the Loan;
          all in form and substance satisfactory to Lender and Lender's counsel.

          Borrower's  Authorization.  Borrower  shall have  provided in form and
          substance satisfactory to Lender properly certified resolutions,  duly
          authorizing the execution and delivery of this Agreement, the Note and
          the Related Documents. In addition,  Borrower shall have provided such
          other resolutions, authorizations, documents and instruments as Lender
          or its counsel, may require.

          Payment of Fees and Expenses.  Borrower  shall have paid to Lender all
          fees,  charges,  and other  expenses which are then due and payable as
          specified in this Agreement or any Related Document.

          Representations and Warranties. The representations and warranties set
          forth in this Agreement, in the Related Documents, and in any document
          or  certificate  delivered to Lender under this Agreement are true and
          correct.

          No Event of Default.  There shall not exist at the time of any Advance
          a condition  which  would  constitute  an Event of Default  under this
          Agreement, or under any Related .Document.

MULTIPLE  BORROWERS.  This Agreement has been executed by multiple  obligors who
are referred to in this Agreement individually, collectively and interchangeably
as "Borrower." Unless specifically  stated to the contrary,  the word "Borrower"
as used in this Agreement,  including  without  limitation all  representations,
warranties and covenants, shall include all Borrowers.  Borrower understands and
agrees that, with or without notice to any one Borrower, Lender may (A) make one
or more  additional  secured or unsecured loans or otherwise  extend  additional
credit  with  respect  to any  other  Borrower;  (B) with  respect  to any other
Borrower alter, compromise,  renew, extend,  accelerate, or otherwise change one
or more times the time for payment or other terms of any indebtedness, including
increases  and  decreases  of the  rate of  interest  on the  indebtedness;  (C)
exchange,  enforce,  waive,  subordinate,  fail or decide  not to  perfect,  and
release any security,  with or without the  substitution of new collateral;  (D)
release,  substitute,  agree  not to  sue,  or  deal  with  any  one or  more of
Borrower's or any other Borrower's sureties,  endorsers,  or other guarantors on
any terms or in any manner Borrower may choose; (E) determine how, when and what
application of payments and credits shall be made on any indebtedness; (F) apply
such  security  and  direct  the  order  or  manner  of sale of any  Collateral,
including  without  limitation,  any non-judicial sale permitted by the terms of
the controlling security agreement or deed of trust, as Lender in its discretion
may determine; (G) sell, transfer,  assign or grant participations in all or any
part of the Loan;  (H) exercise or refrain from  exercising  any rights  against
Borrower or others,  or  otherwise  act or refrain  from  acting;  (I) settle or
compromise any indebtedness;  and (J) subordinate the payment of all or any part
of any of Borrower's  indebtedness  to Lender to the payment of any  liabilities
which may be due  Lender or others.  REPRESENTATIONS  AND  WARRANTIES.  Borrower
represents and warrants to Lender,  as of the date of this Agreement,  as of the
date of each  disbursement  of loan  proceeds,  as of the  date of any  renewal,
extension or modification of any Loan, and at all times any Indebtedness exists:

          Organization.  Flotek  Industries,  Inc. is a  corporation  for profit
          which is, and at all times shall be, duly organized, validly existing,
          and in good  standing  under and by virtue of the laws of the State of
          Delaware.  Flotek  Industries,  Inc.  is duly  authorized  to transact
          business in all other states in which Flotek Industries, Inc. is doing
          business, having obtained all necessary filings, governmental licenses
          and approvals for each state in which Flotek Industries, Inc. is doing
          business.  Specifically,  Flotek Industries, Inc. is, and at all times
          shall be, duly  qualified  as a foreign  corporation  in all states in
          which the failure to so qualify would have a material  adverse  effect
          on its business or financial  condition.  Flotek Industries,  Inc. has
          the full power and authority to own its properties and to transact the
          business in which it is  presently  engaged or  presently  proposes to
          engage.  Flotek  Industries,  Inc.  maintains an office at 7030 Empire
          Central Drive,  Houston, TX 77040. Unless Flotek Industries,  Inc. has
          designated otherwise in writing, the principal office is the office at
          which Flotek  Industries,  Inc. keeps its books and records  including
          its records concerning the Collateral.  Flotek  Industries,  Inc. will
          notify   Lender  prior  to  any  change  in  the  location  of  Flotek
          Industries,  Inc.'s  state of  organization  or any  change  in Flotek
          Industries,  Inc.'s name. Flotek Industries,  Inc. shall do all things
          necessary  to  preserve  and to keep  in full  force  and  effect  its
          existence,   rights  and   privileges,   and  shall  comply  with  all
          regulations,  rules, ordinances,  statutes,  orders and decrees of any
          governmental or  quasi-governmental  authority or court  applicable to
          Flotek  Industries,  Inc.  and  Flotek  Industries,   Inc.'s  business
          activities.  Chemical and Equipment Specialties, Inc. is a corporation
          for  profit  which is,  and at all times  shall  be,  duly  organized,
          validly existing, and in good standing under and by virtue of the laws
          of the State of Oklahoma. Chemical and Equipment Specialties,  Inc. is
          duly  authorized  to transact  business  in all other  states in which
          Chemical and Equipment  Specialties,  Inc. is doing  business,  having
          obtained all necessary  filings,  governmental  licenses and approvals
          for each state in which  Chemical and Equipment  Specialties,  Inc. is
          doing business. Specifically, Chemical and Equipment Specialties, Inc.
          is,  and  at  all  times  shall  be,  duly  qualified  as,  a  foreign
          corporation  in all states in which the  failure  to so qualify  would
          have a material adverse effect on its business or financial condition.
          Chemical  and  Equipment  Specialties,  Inc.  has the full  power  and
          authority to own its  properties and to transact the business in which
          it is presently engaged or presently proposes to engage.  Chemical and
          Equipment  Specialties,  Inc.  maintains an office at 3109 Stagestand,
          Duncan, OK 73533. Unless Chemical and Equipment Specialties,  Inc. has
          designated otherwise in writing, the principal office is the office at
          which  Chemical and Equipment  Specialties,  Inc.  keeps its books and
          records including its records concerning the Collateral.  Chemical and
          Equipment Specialties, Inc. will notify Lender prior to, any change in
          the location of Chemical and  Equipment  Specialties,  Inc.'s state of
          organization  or any change in  Chemical  and  Equipment  Specialties,
          Inc.'s name.  Chemical and Equipment  Specialties,  Inc.  shall do all
          things  necessary to preserve and to keep in full force and effect its
          existence,   rights  and   privileges,   and  shall  comply  with  all
          regulations,  rules, ordinances,  statutes,  orders and decrees of any
          governmental or  quasi-governmental  authority or court  applicable to
          Chemical and  Equipment  Specialties,  Inc. and Chemical and Equipment
          Specialties,  Inc.'s business activities. Neal's Technology, Inc. is a
          corporation  for  profit  which is,  and at all times  shall be,  duly
          organized,  validly existing, and in good standing under and by virtue
          of the laws of the State of Oklahoma. Neal's Technology,  Inc. is duly
          authorized  to transact  business in all other  states in which Neal's
          Technology,  Inc. is doing  business,  having  obtained all  necessary
          filings,  governmental  licenses and approvals for each state in which
          Neal's  Technology,  Inc.  is  doing  business.  Specifically,  Neal's
          Technology,  Inc.  is, and at all times shall be, duly  qualified as a
          foreign  corporation  in all states in which the failure to so qualify
          would have a material  adverse  effect on its  business  or  financial
          condition. Neal's Technology, Inc. has the full power and authority to
          own its  properties  and to  transact  the  business  in  which  it is
          presently engaged or presently proposes to engage.  Neal's Technology,
          Inc.  maintains  its  principal  office at 3600 B South  13th  Street,
          Duncan,  OK 73533.  Unless  Neal's  Technology,  Inc.  has  designated
          otherwise  in writing,  this is the  principal  office at which Neal's
          Technology,  Inc.  keeps its books and records  including  its records
          concerning the Collateral.  Neal's Technology, Inc. will notify Lender
          prior to any change in the location of Neal's Technology, Inc.'s state
          of  organization  or any  change in Neal's  Technology,  Inc.'s  name.
          Neal's Technology,  Inc. shall do all things necessary to preserve and
          to keep in full force and effect its existence, rights and privileges,
          and shall comply with all regulations,  rules,  ordinances,  statutes,
          orders  and  decrees  of  any  governmental   or,   quasi-governmental
          authority or court  applicable to Neal's  Technology,  Inc. and Neal's
          Technology, Inc.'s business activities.  Plainsman Technology, Inc. is
          a  corporation  for profit  which is, and at all times  shall be, duly
          organized, validly, existing, and in good standing under and by virtue
          of the laws of the State of Oklahoma.  Plainsman  Technology,  Inc. is
          duly  authorized  to transact  business  in all other  states in which
          Plainsman  Technology,  Inc. is doing  business,  having  obtained all
          necessary filings,  governmental licenses and approvals for each state
          in which Plainsman Technology,  Inc. is doing business.  Specifically,
          Plainsman  Technology,  Inc.  is,  and at all  times  shall  be,  duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial condition. Plainsman Technology, Inc. has the full power and
          authority to own its  properties and to transact the business in which
          it is  presently  engaged or presently  proposes to engage.  Plainsman
          Technology, Inc. maintains its principal office at PO Box 557, Marlow,
          OK 73055. Unless Plainsman  Technology,  Inc. has designated otherwise
          in  writing,   this  is  the  principal   office  at  which  Plainsman
          Technology,  Inc.  keeps its books and records  including  its records
          concerning  the  Collateral.  Plainsman  Technology,  Inc. will notify
          Lender prior to any change in the  location of  Plainsman  Technology,
          Inc.'s state of  organization  or any change in Plainsman  Technology,
          Inc.'s name. Plainsman Technology,  Inc. shall do all things necessary
          to preserve and to keep in full force and effect its existence; rights
          and  privileges,  and  shall  comply  with  all  regulations,   rules,
          ordinances,  statutes,  orders  and  decrees  of any  governmental  or
          quasi-governmental   authority  or  court   applicable   to  Plainsman
          Technology, Inc. and Plainsman Technology, Inc.'s business activities.
          PADKO International Incorporated is a corporation for profit which is,
          and at all times shall be, duly organized,  validly  existing,  and in
          good  standing  under  and by  virtue  of the  laws  of the  State  of
          Oklahoma.  PADKO  International  Incorporated  is duly  authorized  to
          transact  business in all other  states in which  PADKO  International
          Incorporated is doing business, having obtained all necessary filings,
          governmental  licenses  and  approvals  for each state in which  PADKO
          International  Incorporated  is doing  business.  Specifically,  PADKO
          International  Incorporated  is,  and  at all  times  shall  be,  duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial  condition.  PADKO  International  Incorporated has the full
          power  and  authority  to own  its,  properties  and to  transact  the
          business in which it is  presently  engaged or  presently  proposes to
          engage.  PADKO  International  Incorporated  maintains  its  principal
          office at 15 North 9th, Duncan, OK 73533.  Unless PADKO  International
          Incorporated  has  designated  otherwise  in  writing,   this  is  the
          principal office at which PADKO  International  Incorporated keeps its
          books and records  including its records  concerning  the  Collateral.
          PADKO  International  Incorporated  will  notify  Lender  prior to any
          change in the location of PADKO International  Incorporated's state of
          organization or any change in PADKO International Incorporated's name.
          PADKO  International  Incorporated  shall do all things  necessary  to
          preserve  and to keep in full force and effect its  existence,  rights
          and  privileges,  and  shall  comply  with  all  regulations,   rules,
          ordinances,  statutes,  orders  and  decrees  of any  governmental  or
          quasi-governmental    authority   or   court   applicable   to   PADKO
          International  Incorporated  and  PADKO  International  Incorporated's
          business activities.  Material  Translogistics,  Inc. is a corporation
          for  profit  which is,  and at all times  shall  be,  duly  organized,
          validly existing, and in good standing under and by virtue of the laws
          of  the  State  of  Texas.  Material  Translogistics,   Inc.  is  duly
          authorized to transact  business in all other states in which Material
          Translogistics,  Inc. is doing business, having obtained all necessary
          filings,  governmental  licenses and approvals for each state in which
          Material  Translogistics,   Inc.  is  doing  business.   Specifically,
          Material  Translogistics,  Inc.  is, and at all times  shall be,  duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial condition. Material Translogistics,  Inc. has the full power
          and  authority to own its  properties  and to transact the business in
          which  it is  presently  engaged  or  presently  proposes  to  engage.
          Material Translogistics, Inc. maintains an office at 3600 B South 13th
          Street,  Duncan, OK 73533.  Unless Material  Translogistics,  Inc. has
          designated otherwise in writing, the principal office is the office at
          which  Material  Translogistics,  Inc.  keeps its  books  and  records
          including   its   records   concerning   the   Collateral.    Material
          Translogistics,  Inc.  will notify  Lender  prior to any change in the
          location of Material. Translogistics,  Inc.'s state of organization or
          any  change  in  Material   Translogistics,   Inc.'s  name.   Material
          Translogistics,  Inc. shall do all things necessary to preserve and to
          keep in full force and effect its  existence,  rights and  privileges;
          and shall comply with all regulations,  rules,  ordinances,  statutes,
          orders and decrees of any governmental or quasi-governmental authority
          or, court  applicable  to Material  Translogistics,  Inc. and Material
          Translogistics,   Inc.'s  business   activities.   Esses,  Inc.  is  a
          corporation  for  profit  which is,  and at all times  shall be,  duly
          organized,  validly existing, and in good standing under and by virtue
          of the laws of the State of Oklahoma.  Esses,  Inc. is duly authorized
          to transact business in all other states in which Esses, Inc. is doing
          business, having obtained all necessary filings, governmental licenses
          and approvals for each state in which Esses,  Inc. is doing  business.
          Specifically,  Esses,  Inc.  is,  and  at all  times  shall  be,  duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          ,financial condition.  Esses, Inc. has the full power and authority to
          own its  properties  and to  transact  the  business  in  which  it is
          presently  engaged  or  presently  proposes  to  engage.  Esses,  Inc.
          maintains its  principal  office at 301  Industrial  Dr.,  Duncan,  OK
          73533. Unless Esses, Inc. has designated otherwise in writing, this is
          the principal office at which Esses,  Inc. keeps its books and records
          .including its records  concerning the  Collateral.  Esses,  Inc. will
          notify  Lender  prior to any change in the  location of Esses,  Inc.'s
          state of organization or any change in Esses, Inc.'s name. Esses, Inc.
          shall do all things  necessary  to preserve  and to keep in full force
          and effect its existence, rights and privileges, and shall comply with
          all regulations,  rules, ordinances,  statutes,  orders and decrees of
          any governmental or  quasi-governmental  authority or court applicable
          to Esses, Inc. and Esses, Inc.'s business activities. Turbeco, Inc. is
          a  corporation  for profit  which is, and at all times  shall be, duly
          organized,  validly existing, and in good standing under and by virtue
          of the laws of the State of Texas. Turbeco, Inc. is duly authorized to
          transact business in all other states in which Turbeco,  Inc. is doing
          business, having obtained all necessary filings, governmental licenses
          and approvals for each state in which Turbeco, Inc. is doing business.
          Specifically,  Turbeco,  Inc.  is,  and at all times  shall  be,  duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial condition. Turbeco, Inc. has the full power and authority to
          own its  properties  and to  transact  the  business  in  which  it is
          presently  engaged or  presently  proposes  to engage.  Turbeco,  Inc.
          maintains its principal office at 7030 Empire Central Drive,  Houston,
          TX 77040.  Unless Turbeco,  Inc. has designated  otherwise in writing,
          this is the principal  office at which  Turbeco,  Inc. keeps its books
          and records including its records concerning the Collateral.  Turbeco,
          Inc.  will  notify  Lender  prior to any  change  in the  location  of
          Turbeco, Inc.'s state of organization or any change in Turbeco, Inc.'s
          name.  Turbeco,  Inc. shall do all things necessary to preserve and to
          keep in full force and effect its  existence,  rights and  privileges,
          and shall comply with all regulations,  rules,  ordinances,  statutes,
          orders and decrees of any governmental or quasi-governmental authority
          or court  applicable  to Turbeco,  Inc. and Turbeco,  Inc.'s  business
          activities. USA Petrovalve, Inc. is a corporation for profit which is,
          and at all times shall be, duly organized,  validly  existing,  and in
          good  standing  under and by virtue of the laws of the State of Texas.
          USA Petrovalve,  Inc. is duly  authorized to transact  business in all
          other states in which USA Petrovalve,  Inc. is doing business,  having
          obtained all necessary  filings,  governmental  licenses and approvals
          for each  state in  which  USA  Petrovalve,  Inc.  is doing  business.
          Specifically, USA Petrovalve, Inc. is, and at all times shall be, duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial  condition.  USA  Petrovalve,  Inc.  has the full  power and
          authority to own its  properties and to transact the business in which
          it  is  presently  engaged  or  presently   proposes  to  engage.  USA
          Petrovalve, Inc. maintains its principal office at 7030 Empire Central
          Drive,  Houston, TX 77040. Unless USA Petrovalve,  Inc. has designated
          otherwise  in  writing,  this is the  principal  office  at which  USA
          Petrovalve,  Inc.  keeps its books and records  including  its records
          concerning the  Collateral.  USA  Petrovalve,  Inc. will notify Lender
          prior to any change in the location of USA Petrovalve, Inc.'s state of
          organization  or  any  change  in USA  Petrovalve,  Inc.'s  name.  USA
          Petrovalve, Inc. shall do all things necessary to preserve and to keep
          in full force and effect its  existence,  rights and  privileges,  and
          shall comply with all regulations; rules, ordinances, statutes, orders
          and decrees of any  governmental  or  quasi-governmental  authority or
          court  applicable to USA Petrovalve,  Inc. and USA Petrovalve,  Inc.'s
          business  activities.  Trinity Tool,  Inc. is a corporation for profit
          which is, and at all times shall be, duly organized, validly existing,
          and in good  standing  under and by virtue of the laws of the State of
          Texas.  Trinity Tool, Inc. is duly authorized to transact  business in
          all other states in which Trinity Tool, Inc. is doing business, having
          obtained all necessary  filings,  governmental  licenses and approvals
          for  each  state in  which  Trinity  Tool,  Inc.  is  doing  business.
          Specifically,  Trinity Tool,  Inc. is, and at all times shall be, duly
          qualified as a foreign  corporation in all states in which the failure
          to so qualify would have a material  adverse effect on its business or
          financial  condition.  Trinity  Tool,  Inc.  has the  full  power  and
          authority to own its  properties and to transact the business in which
          it is presently engaged or presently proposes to engage. Trinity Tool,
          Inc.  maintains its principal  office at PO Box 899,  Mason, TX 76856.
          Unless Trinity Tool, Inc. has designated otherwise in writing, this is
          the principal  office at which Trinity Tool,  Inc. keeps its books and
          records including its records concerning the Collateral. Trinity Tool,
          Inc. will notify Lender prior to any change in the location of Trinity
          Tool,  Inc.'s  state of  organization  or any change in Trinity  Tool,
          Inc.'s  name.  Trinity  Tool,  Inc.  shall do all things  necessary to
          preserve  and to keep in full force and effect its  existence,  rights
          and  privileges,  and  shall  comply  with  all  regulations,   rules,
          ordinances,  statutes,  orders  and  decrees  of any  governmental  or
          quasi-governmental authority or court applicable to Trinity Tool, Inc.
          and Trinity Tool, Inc.'s business  activities.  Petrovalve,  Inc. is a
          corporation  for  profit  which is,  and at all times  shall be,  duly
          organized,  validly existing, and in good standing under and by virtue
          of the  laws  of the  State  of  Delaware.  Petrovalve,  Inc.  is duly
          authorized  to  transact   business  in  all  other  states  in  which
          Petrovalve,  Inc. is doing  business,  having  obtained all  necessary
          filings,  governmental  licenses and approvals for each state in which
          Petrovalve, Inc. is doing business. Specifically, Petrovalve, Inc. is,
          and at all times shall be, duly qualified as a foreign  corporation in
          all states in which the  failure  to so qualify  would have a material
          adverse  effect on its  business or financial  condition.  Petrovalve,
          Inc.  has the full power and  authority to own its  properties  and to
          transact the  business in which it is  presently  engaged or presently
          proposes to engage. Petrovalve, Inc. maintains its principal office at
          7030 Empire Central Drive, Houston, TX 77040. Unless Petrovalve,  Inc.
          has designated  otherwise in writing,  this is the principal office at
          which  Petrovalve,  Inc.  keeps its books and  records  including  its
          records concerning the Collateral. Petrovalve, Inc. will notify Lender
          prior to any change in the  location of  Petrovalve,  Inc.'s  state of
          organization  or any change in  Petrovalve,  Inc.'s name.  Petrovalve,
          Inc.  shall do all things  necessary  to preserve  and to keep in full
          force and  effect its  existence,  rights  and  privileges,  and shall
          comply with all regulations,  rules, ordinances,  statutes, orders and
          decrees of any governmental or  quasi-governmental  authority or court
          applicable  to  Petrovalve,  Inc.  and  Petrovalve,   Inc.'s  business
          activities.

          Assumed  Business Names.  Borrower has filed or recorded all documents
          or filings required by law relating to all assumed business names used
          by  Borrower.  Excluding  the name of  Borrower,  the  following  is a
          complete list of all assumed  business names under which Borrower does
          business: None.

          Authorization. Borrower's execution, delivery, and performance of this
          Agreement and all the Related  Documents have been duly  authorized by
          all necessary action by Borrower and do not conflict with, result in a
          violation  of, or  constitute  a default  under (1) any  provision  of
          Petrovalve,  Inc.'s  articles of  incorporation  or  organization,  or
          bylaws, or any agreement or other instrument  binding upon Borrower or
          (2)  any  law,  governmental   regulation,   court  decree,  or  order
          applicable to Borrower or to Borrower's properties.

          Financial   Information.   Each  of  Borrower's  financial  statements
          supplied to Lender truly and completely disclosed Borrower's financial
          condition  as of the  date of the  statement,  and  there  has been no
          material adverse change in Borrower's  financial condition  subsequent
          to the date of the most recent financial statement supplied to Lender.
          Borrower has no material contingent obligations except as disclosed in
          such financial statements.

          Legal  Effect.  This  Agreement  constitutes,  and any  instrument  or
          agreement  Borrower  is  required  to give under this  Agreement  when
          delivered will constitute  legal,  valid,  and binding  obligations of
          Borrower   enforceable  against  Borrower  in  accordance  with  their
          respective terms.

          Properties.  Except as contemplated by this Agreement or as previously
          disclosed in Borrower's  financial  statements or in writing to Lender
          and as accepted by Lender, and except for property tax liens for taxes
          not presently due and payable, Borrower owns and has good title to all
          of Borrower's properties free and clear of all Security Interests, and
          has not  executed  any  security  documents  or  financing  statements
          relating to such properties.  All of Borrower's  properties are titled
          in  Borrower's  legal  name,  and  Borrower  has not  used or  filed a
          financing  statement  under any other  name for at least the last five
          (5) years.

          Hazardous  Substances.  Except as  disclosed  to and  acknowledged  by
          Lender in writing,  Borrower  represents and warrants that: (1) During
          the period of Borrower's ownership of Borrower's Collateral, there has
          been no use, generation,  manufacture,  storage, treatment,  disposal,
          release or threatened release of any Hazardous Substance by any person
          on, under,  about or from any of the  Collateral,  (2) Borrower has no
          knowledge  of, or reason to believe that there has been (a) any breach
          or  violation  of any  Environmental  Laws;  (b) any use,  generation,
          manufacture,  storage,  treatment,  disposal,  release  or  threatened
          release  of any  Hazardous  Substance  on,  under,  about  or from the
          Collateral by any prior owners or occupants of any of the  Collateral;
          or (c) any actual or  threatened  litigation  or claims of any kind by
          any person  relating to such  matters,  (3) Neither  Borrower  nor any
          tenant,  contractor,  agent  or  other  authorized  user of any of the
          Collateral shall use, generate,  manufacture, store, treat, dispose of
          or release any Hazardous Substance on, under, about or from any of the
          Collateral;  and any such  activity  shall be conducted in  compliance
          with all applicable federal, state, and local laws,  regulations,  and
          ordinances,  including  without  limitation  all  Environmental  Laws.
          Borrower authorizes Lender and its agents to enter upon the Collateral
          to make such  inspections and tests as Lender may deem  appropriate to
          determine  compliance  of the  Collateral  with  this  section  of the
          Agreement.  Any  inspections  or  tests  made by  Lender  shall  be at
          Borrower's  expense and for  Lender's  purposes  only and shall not be
          construed  to create any  responsibility  or  liability on the part of
          Lender to Borrower or to any other  person.  The  representations  and
          warranties  contained  herein are based on Borrower's due diligence in
          investigating   the  Collateral  for  hazardous  waste  and  Hazardous
          Substances.  Borrower hereby (1) releases and waives any future claims
          against  Lender for indemnity or  contribution  in the event  Borrower
          becomes liable for cleanup or other costs under any such laws, and (2)
          agrees to  indemnify  and hold  harmless  Lender  against  any and all
          claims, losses,  liabilities,  damages,  penalties, and expenses which
          Lender may directly or indirectly  sustain or suffer  resulting from a
          breach of this  section of the  Agreement or as a  consequence  of any
          use, generation, manufacture, storage, disposal, release or threatened
          release of a  hazardous  waste or  substance  on the  Collateral.  The
          provisions of this section of the Agreement,  including the obligation
          to indemnify,  shall survive the payment of the  Indebtedness  and the
          termination,  expiration or  satisfaction  of this Agreement and shall
          not be affected by Lender's  acquisition of any interest in any of the
          Collateral, whether by foreclosure or otherwise.

          Litigation   and  Claims.   No   litigation,   claim,   investigation,
          administrative  proceeding  or  similar  action  (including  those for
          unpaid taxes) against Borrower is pending or threatened,  and no other
          event has occurred which may materially  adversely  affect  Borrower's
          financial condition or properties,  other than litigation,  claims, or
          other events,  if any, that have been disclosed to and acknowledged by
          Lender in writing.

          Taxes.  To the best of Borrower's  knowledge,  all of  Borrower's  tax
          returns and reports that are or were  required to be filed,  have been
          filed, and all taxes,  assessments and other governmental charges have
          been paid in full,  except those presently being or to be contested by
          Borrower  in good faith in the  ordinary  course of  business  and for
          which adequate reserves have been provided.

          Lien  Priority.  Unless  otherwise  previously  disclosed to Lender in
          writing,  Borrower  has not  entered  into  or  granted  any  Security
          Agreements,  or  permitted  the filing or  attachment  of any Security
          Interests  on  or,  affecting  any  of  the  Collateral   directly  or
          indirectly  securing repayment of Borrower's Loan and Note, that would
          be prior  or that  may in any way be  superior  to  Lender's  Security
          Interests and rights in and to such Collateral.

          Binding Effect. This Agreement,  the Note, all Security Agreements (if
          any), and all Related  Documents are binding upon the signers thereof,
          as well as upon their successors, representatives and assigns, and are
          legally enforceable in accordance with their respective terms.

AFFIRMATIVE  COVENANTS.  Borrower  covenants  and agrees with Lender  that,  so
long as this  Agreement  remains in effect, Borrower will:

         Notices of Claims and Litigation. Promptly inform Lender in writing of
         (1) all material  adverse changes in Borrower's  financial  condition,
         and  (2)  all  existing  and  all   threatened   litigation,   claims,
         investigations,   administrative   proceedings   or,  similar  actions
         affecting  Borrower or any Guarantor which could materially affect the
         financial  condition  of Borrower or the  financial  condition  of any
         Guarantor.

         Financial  Records.  Maintain its books and records in accordance with
         GAAP,  applied on a consistent basis, and permit Lender to examine and
         audit Borrower's books and records at all reasonable times.

         Financial Statements.  Furnish Lender with the following:

                  Annual Statements: As soon as available, but in no event later
                  than thirty (30) days after the end of each fiscal year,
                  Borrower's balance sheet and income statement for the year
                  ended, prepared by Borrower in form satisfactory to Lender.

                  Interim Statements. As soon as available, but in no event
                  later than thirty (30) days after the end of each month,
                  Borrower's balance sheet and profit and loss statement for the
                  period ended, prepared by Borrower.

                  Tax Returns. As soon as available, but in no event later than
                  thirty (30) days after the applicable filing date for the tax
                  reporting period ended, Federal and other governmental tax
                  returns, prepared by a certified public accountant
                  satisfactory to Lender.

         All financial  reports  required to be provided  under this  Agreement
         shall be prepared in  accordance  with GAAP,  applied on a  consistent
         basis, and certified by Borrower as being true and correct.

         Additional  Information.  Furnish such additional  information and
         statements,  as Lender may request from time to time.

         Insurance.  Maintain fire and other risk insurance,  public  liability
         insurance, and such other insurance as Lender may require with respect
         to Borrower's properties and operations,  in form, amounts,  coverages
         and with  insurance  companies  acceptable to Lender.  Borrower,  upon
         request  of  Lender,  will  deliver  to  Lender  from time to time the
         policies or certificates of insurance in form  satisfactory to Lender,
         including  stipulations  that  coverages  will  not  be  cancelled  or
         diminished  without  of least ten (10) days  prior  written  notice to
         Lender.  Each  insurance  policy  also shall  include  an  endorsement
         providing that coverage in favor of Lender will not be impaired in any
         way by any act,  omission or default of Borrower or any other  person.
         In connection with all policies covering assets in which Lender, holds
         or is offered a security interest for the Loans, Borrower will provide
         Lender with such lender's loss payable or other endorsements as Lender
         may require.

         Insurance Reports.  Furnish to Lender; upon request of Lender, reports
         on each existing  insurance  policy showing such information as Lender
         may reasonably  request,  including without  limitation the following:
         (1) the name of the insurer;  (2) the risks insured; (3) the amount of
         the policy; (4) the properties insured;  (5) the then current property
         values  on the basis of which  insurance  has been  obtained,  and the
         manner of determining those values; and (6) the expiration date of the
         policy.  In addition,  upon request of Lender  (however not more often
         than   annually),   Borrower  will  have  an   independent   appraiser
         satisfactory to Lender determine, as applicable, the actual cash value
         or  replacement  cost of any  Collateral.  The cost of such  appraisal
         shall be paid by Borrower.

         Other  Agreements.  Comply with all terms and  conditions of all other
         agreements,  whether now or hereafter  existing,  between Borrower and
         any other  party and  notify  Lender  immediately  in,  writing of any
         default in connection with any other such agreements.

         Loan Proceeds.  Use all Loan proceeds  solely for Borrower's  business
         operations,  unless  specifically  consented the contrary by Lender in
         writing.

         Taxes,  Charges  and  Liens.  Pay and  discharge  when  due all of its
         indebtedness  and  obligations,   including  without   limitation  all
         assessments,  taxes,  governmental charges, levies and liens, of every
         kind and nature,  imposed upon Borrower or its properties,  income, or
         profits,  prior to the date on which penalties  would attach,  and all
         lawful claims that, if unpaid,  might become a lien or charge upon any
         of Borrower's properties, income, or profits.

         Performance.  Perform and comply, in a timely manner,  with all terms,
         conditions, and provisions set forth in this Agreement, in the Related
         Documents,  and  in  all  other  instruments  and  agreements  between
         Borrower and Lender.  Borrower  shall  notify  Lender  immediately  in
         writing of any default in connection with any agreement.

         Operations.   Maintain   executive  and   management   personnel  with
         substantially  the same  qualifications  and experience as the present
         executive and management  personnel;  provide written notice to Lender
         of any change in  executive  and  management  personnel;  conduct  its
         business affairs in a reasonable and prudent manner.

         Environmental  Studies.  Promptly  conduct and complete at  Borrower's
         expense, all such investigations,  studies,  samplings and testings as
         may be requested by Lender or any governmental  authority  relative to
         any substance,  or any waste or by product of any substance defined as
         toxic or a hazardous  substance under  applicable  federal,  state, or
         local law, rule, regulation,  order or directive,  at or affecting any
         property or any facility owned, leased or used by Borrower.

         Compliance  with  Governmental  Requirements.  Comply  with all  laws,
         ordinances,  and  regulations,  now or  hereafter  in  effect,  of all
         governmental  authorities  applicable  to the  conduct  of  Borrower's
         properties,  businesses and operations, and to the use or occupancy of
         the  Collateral,  including  without  limitation,  the Americans  With
         Disabilities  Act.  Borrower  may  contest in good faith any such law,
         ordinance,   or  regulation   and  withhold   compliance   during  any
         proceeding,  including  appropriate  appeals,  so long as Borrower has
         notified  Lender  in  writing  prior to  doing  so and so long as,  in
         Lender's sole opinion,  Lender's  interests in the  Collateral are not
         jeopardized.  Lender may require Borrower to post adequate security or
         a surety bond, reasonably  satisfactory to Lender, to protect Lender's
         interest.

         Inspection.  Permit  employees  or agents of Lender at any  reasonable
         time to  inspect  any and all  Collateral  for the Loan or  Loans  and
         Borrower's other properties and to examine or audit Borrower's  books,
         accounts,  and records and to make copies and  memoranda of Borrower's
         books, accounts, and records. If Borrower now or at any time hereafter
         maintains any records (including without limitation computer generated
         records and  computer  software  programs for the  generation  of such
         records) in the possession of a third party, Borrower, upon request of
         Lender,  shall notify such party to permit Lender free access, to such
         records at all reasonable  times, and to provide Lender with copies of
         any records it may request, all at Borrower's expense.

         Compliance  Certificates.  Unless waived in writing by Lender, provide
         Lender at least  annually,  with a certificate  executed by Borrower's
         chief  financial  officer,  or other  officer or person  acceptable to
         Lender,  certifying that the  representations and warranties set forth
         in  this  Agreement  are  true  and  correct  as of  the  date  of the
         certificate  and  further  certifying  that,  as of  the  date  of the
         certificate, no Event of Default exists under this Agreement.

         Environmental  Compliance  and Reports.  Borrower  shall comply in all
         respects with any and all  Environmental  Laws; not cause or permit to
         exist,  as a result  of an  intentional  or  unintentional  action  or
         omission  on  Borrower's  part or on the part of any third  party,  on
         property owned and/or occupied by Borrower, any environmental activity
         where damage may result to the environment,  unless such environmental
         activity is pursuant to and in  compliance  with the  conditions  of a
         permit issued by the appropriate federal,  state or local governmental
         authorities;  shall furnish to Lender promptly and in any event within
         thirty (30) days after receipt thereof a copy of any notice,  summons,
         lien,  citation,  directive,  letter or other  communication  from any
         governmental  agency or instrumentality  concerning any intentional or
         unintentional action or omission on Borrower's part in connection with
         any  environmental  activity  whether  or not  there is  damage to the
         environment and/or other natural resources.

         Additional  Assurances.  Make,  execute  and  deliver  to Lender  such
         promissory  notes,  mortgages,  deeds of trust,  security  agreements,
         assignments,  financing statements,  instruments,  documents and other
         agreements  as Lender  or its  attorneys  may  reasonably  request  to
         evidence and secure the Loans and to perfect all Security Interests.

LENDER'S  EXPENDITURES.  If any action or  proceeding  is  commenced  that would
materially  affect  Lender's  interest in the Collateral or if Borrower fails to
comply with any provision of this Agreement or any Related Documents,  including
but not limited to  Borrower's  failure to discharge or pay when due any amounts
Borrower is required to  discharge  or pay under this  Agreement  or any Related
Documents,  Lender on Borrower's behalf may (but shall not be obligated to) take
any  action  that  Lender  deems  appropriate,  including  but  not  limited  to
discharging or paying all taxes,  liens,  security  interests,  encumbrances and
other  claims,  at any time  levied or placed on any  Collateral  and paying all
costs  for  insuring,  maintaining  and  preserving  any  Collateral.  All  such
expenditures  incurred  or paid by  Lender  for such  purposes  will  then  bear
interest at the rate charged under the Note or at the highest rate authorized by
law,  from the date  incurred  or paid by  Lender  to the date of  repayment  by
Borrower.  All such  expenses  will  become a part of the  Indebtedness  and, at
Lender's option,  will (A) be payable on demand;  (B) be added to the balance of
the Note and be apportioned  among and be payable with any installment  payments
to become due during either (1) the term of any applicable  insurance policy; or
(2) the remaining term of the Note; or (C) be treated as a balloon payment which
will be due and payable at the Note's maturity.  If Lender is required by law to
give  Borrower  notice  before or after  Lender makes an  expenditure,  Borrower
agrees  that  notice  sent by  regular  mail at least  five (5) days  before the
expenditure is made or notice  delivered two (2) days before the  expenditure is
made is sufficient, and that notice within sixty (60) days after the expenditure
is made is reasonable.

NEGATIVE  COVENANTS.  Borrower  covenants and agrees with Lender that while this
Agreement is in effect, Borrower shall not, without the prior written consent of
Lender:

          Indebtedness  and Liens.  (1) Except  for trade debt  incurred  in the
          normal course of business and  indebtedness to Lender  contemplated by
          this  Agreement,  create,  incur or assume  indebtedness  for borrowed
          money, including capital leases, (2) sell, transfer, mortgage, assign,
          pledge,  lease,  grant a  security  interest  in, or  encumber  any of
          Borrower's  assets (except as allowed as Permitted Liens), or (3) sell
          with recourse any of Borrower's accounts, except to Lender.

          Continuity  of  Operations.  (1)  Engage  in any  business  activities
          substantially  different  than those in which  Borrower  is  presently
          engaged, (2) cease operations,  liquidate, merge, transfer, acquire or
          consolidate  with any  other  entity,  change  its name,  dissolve  or
          transfer or sell Collateral out of the ordinary course of business, or
          (3) pay any  dividends  on  Borrower's  stock  (other  than  dividends
          payable in its stock),  provided,  however  that  notwithstanding  the
          foregoing, but only so long as no Event of Default has occurred and is
          continuing or would result from the payment of dividends,  if Borrower
          is a "Subchapter S  Corporation"  (as defined in the Internal  Revenue
          Code of 1986,  as  amended),  Borrower  may pay cash  dividends on its
          stock to its  shareholders  from time to time in amounts  necessary to
          enable the  shareholders to pay income taxes and make estimated income
          tax payments to satisfy their  liabilities under federal and state law
          which arise solely from their status as Shareholders of a Subchapter S
          Corporation  because of their ownership of shares of Borrower's stock,
          or purchase or retire any of Borrower's outstanding shares or alter or
          amend Borrower's capital structure.

          Loans,  Acquisitions  and Guaranties.  (1) Loan,  invest in or advance
          money or assets,  (2) purchase,  create or acquire any interest in any
          other  enterprise or entity,  or (3) incur any obligation as surety or
          guarantor other than in the ordinary course of business.

CESSATION OF  ADVANCES.  If Lender has made any  commitment  to make any Loan to
Borrower,  whether  under this  Agreement or under any other  agreement,  Lender
shall have no  obligation to make Loan Advances or to disburse Loan proceeds if:
(A) Borrower or any Guarantor is in default under the terms of this Agreement or
any of the  Related  Documents  or any  other  agreement  that  Borrower  or any
Guarantor  has  with  Lender;  (B)  Borrower  or  any  Guarantor  dies,  becomes
incompetent  or becomes  insolvent,  files a petition in  bankruptcy  or similar
proceedings,  or is adjudged a  bankrupt;  (C) there  occurs a material  adverse
change in Borrower's  financial  condition,  in the  financial  condition of any
Guarantor,  or in the value of any  Collateral  securing any Loan;  or (D) , any
Guarantor,  seeks,  claims or otherwise attempts to limit, modify or revoke such
Guarantor's guaranty of the Loan or any other loan with Lender; or (E) Lender in
good faith deems  itself  insecure,  even though no Event of Default  shall have
occurred.

RIGHT OF SETOFF.  To the extent  permitted by applicable  law, Lender reserves a
right of  setoff in all  Borrower's  accounts  with  Lender  (whether  checking,
savings,  or some other  account).  This  includes all accounts  Borrower  holds
jointly  with  someone  else and all  accounts  Borrower may open in the future.
However,  this does not include any IRA or Keogh accounts, or any trust accounts
for which setoff would be prohibited by law. Borrower  authorizes Lender, to the
extent  permitted by  applicable  law, to charge or setoff all sums owing on the
Indebtedness  against any and all such  accounts,  and, at Lender's  option,  to
administratively  freeze all such  accounts to allow Lender to protect  Lender's
charge and setoff rights provided in this paragraph.

          DEFAULT.  Each of the following  shall  constitute an Event of Default
          under this Agreement:

          Payment Default. Borrower fails to make any payment when due under the
          Loan.

          Other Defaults.  Borrower fails to comply with or to perform any other
          term, obligation, covenant or condition contained in this Agreement or
          in any of the  Related  Documents  or to comply with or to perform any
          term  obligation,   covenant  or  condition  contained  in  any  other
          agreement between Lender and Borrower.

          Default in Favor of Third  Parties.  Borrower or any Grantor  defaults
          under any loan, extension of credit,  security agreement,  purchase or
          sales  agreement,  or any  other  agreement,  in  favor  of any  other
          creditor or person that may materially affect any of Borrower's or any
          Grantor's property or Borrower's or any Grantor's ability to repay the
          Loans or perform their respective  obligations under this Agreement or
          any of the Related Documents.

          False  Statements.  Any warranty,  representation or statement made or
          furnished  to lender by Borrower or on  Borrower's  behalf  under this
          Agreement  or the  Related  Documents  is false or  misleading  in any
          material  respect,  either  now or at the time  made or  furnished  or
          becomes false or misleading at any time thereafter.

          Insolvency.  The dissolution or termination of Borrower's existence as
          a going  business,  the Insolvency of Borrower,  the  appointment of a
          receiver for any part of Borrower's  property,  any assignment for the
          benefit  of  creditors,   any  type  of  creditor   workout,   or  the
          commencement of any proceeding under any bankruptcy or insolvency laws
          by or against Borrower.

          Defective  Collateralization.  This  Agreement  or any of the  Related
          Documents ceases to be in full force and effect (including  failure of
          any  collateral  document  to  create a valid and  perfected  security
          interest or lien) at any time and for any reason.

          Creditor or Forfeiture  Proceedings.  Commencement  of  foreclosure or
          forfeiture  proceedings,  whether by judicial  proceeding,  self-help,
          repossession  or any other  method,  by any creditor of Borrower or by
          any governmental agency against any collateral securing the loan. This
          includes  a  garnishment  of any  of  Borrower's  accounts,  including
          deposit accounts,  with lender.  However,  this Event of Default shall
          not  apply if there is a good  faith  dispute  by  Borrower  as to the
          validity  or  reasonableness  of the  claim  which is the basis of the
          creditor or forfeiture proceeding and if Borrower gives lender written
          notice of the creditor or  forfeiture  proceeding  and  deposits  with
          lender  monies  or a  surety  bond  for  the  creditor  or  forfeiture
          proceeding, in an amount determined by lender, in its sole discretion,
          as being an adequate reserve or bond for the dispute.

          Events  Affecting  Guarantor.  Any of the preceding events occurs with
          respect to any Guarantor of any of the  Indebtedness  or any Guarantor
          dies or becomes  incompetent,  or revokes or disputes the validity of,
          or liability under, any Guaranty of the Indebtedness.  In the event of
          a death,  Lender,  at its option,  may,  but shall not be required to,
          permit  the   Guarantor's   estate  to  assume   unconditionally   the
          obligations  arising  under the guaranty in a manner  satisfactory  to
          Lender, and, in doing so, cure any Event of Default.

          Change In Ownership.  Any change in ownership of  twenty-five  percent
          (25%) or more of the common stock of Borrower.

          Adverse  Change.  A  material  adverse  change  occurs  in  Borrower's
          financial  condition,  or Lender  believes  the prospect of payment or
          performance of the Loan is impaired.

          Right to Cure. If any default,  other than a default on  Indebtedness,
          is curable and if  Borrower  or  Grantor,  as the case may be, has not
          been given a notice of a similar  default within the preceding  twelve
          (12)  months,  it may be  cured  (and no Event of  Default  will  have
          occurred) if Borrower or Grantor,  as the case may be, after receiving
          written notice from Lender  demanding  cure of such default:  (1) cure
          the default  within ten (10) days;  or (2) if the cure  requires  more
          than ten (10) days,  immediately  initiate steps which Lender deems in
          Lender's  sole  discretion  to be  sufficient  to cure the default and
          thereafter  continue and complete all reasonable  and necessary  steps
          sufficient to produce compliance as soon as reasonably practical.

EFFECT OF AN EVENT OF DEFAULT. If any Event of Default shall occur, except where
otherwise provided in this Agreement or the Related  Documents,  all commitments
and  obligations of Lender under this Agreement or the Related  Documents or any
other  agreement  immediately  will terminate  (including any obligation to make
further  Loan  Advances  or   disbursements),   and,  at  Lender's  option,  all
Indebtedness  immediately will become due and payable, all without notice of any
kind to  Borrower,  except  that in the case of an Event of  Default of the type
described in the  "Insolvency"  subsection  above,  such  acceleration  shall be
automatic  and not optional.  In addition,  Lender shall have all the rights and
remedies  provided in the Related  Documents or available at law, in equity,  or
otherwise. Except as may be prohibited by applicable law, all of Lender's rights
and  remedies   shall  be  cumulative   and  may  be  exercised   singularly  or
concurrently.  Election by Lender to pursue any remedy shall not exclude pursuit
of any other remedy,  and an election to make  expenditures or to take action to
perform an obligation  of Borrower or of any Grantor  shall not affect  Lender's
right to declare a default and to exercise its rights and remedies.

MISCELLANEOUS PROVISIONS.  The following miscellaneous provisions are a part of
this Agreement:

          Amendments.  This  Agreement,  together  with any  Related  Documents,
          constitutes the entire  understanding  and agreement of the parties as
          to  the   matters  set  forth  in  this   Agreement.   All  prior  and
          contemporaneous   representations  and  discussions   concerning  such
          matters  either are included in this document or do not  constitute an
          aspect of the agreement of the parties.  Except as may be specifically
          set forth in this Agreement, no conditions precedent or subsequent, or
          any kind  whatsoever,  exist with  respect to  Borrower's  obligations
          under this Agreement.  No alteration of or amendment to this Agreement
          shall be effective  unless given in writing and signed by the party or
          parties sought to be charged or bound by the alteration or amendment.

          Attorneys' Fees;  Expenses.  Borrower agrees to pay upon demand all of
          Lender's costs and expenses,  including  Lender's  attorneys' fees and
          Lender's legal  expenses,  incurred in connection with the enforcement
          of this Agreement. Lender may hire or pay someone else to help enforce
          this Agreement,  and Borrower shall pay the costs and expenses of such
          enforcement.  Costs and expenses include Lender's  attorneys' fees and
          legal expenses whether or not there is a lawsuit, including attorneys'
          fees and legal expenses for bankruptcy  proceedings (including efforts
          to modify or vacate any automatic stay or  injunction),  appeals,  and
          any anticipated post-judgment collection services. Borrower also shall
          pay all court costs and such additional fees as may be directed by the
          court.

          Caption   Headings.   Caption  headings  in  this  Agreement  are  for
          convenience  purposes  only  and are not to be  used to  interpret  or
          define the provisions of this Agreement.

          Consent  to  Loan  Participation.  Borrower  agrees  and  consents  to
          Lender's  sale  or  transfer,  whether  now or  later,  of one or more
          participation interests in the Loan to one or more purchasers, whether
          related or  unrelated  to  Lender.  Lender may  provide,  without  any
          limitation  whatsoever,  to any one or more  purchasers,  or potential
          purchasers,  any  information  or  knowledge  Lender  may  have  about
          Borrower or about any other matter  relating to the Loan, and Borrower
          hereby waives any rights to privacy  Borrower may have with respect to
          such matters. Borrower additionally waives any and all notices of sale
          of participation  interests,  as well as all notices of any repurchase
          of  such  participation  interests.  Borrower  also  agrees  that  the
          purchasers of any such  participation  interests will be considered as
          the  absolute  owners of such  interests in the Loan and will have all
          the rights  granted  under the  participation  agreement or agreements
          governing the sale of such participation  interests.  Borrower further
          waives  all rights of offset or  counterclaim  that it may have now or
          later against Lender or against any purchaser of such a  participation
          interest  and  unconditionally  agrees  that  either  Lender  or  such
          purchaser   may   enforce   Borrower's   obligation   under  the  Loan
          irrespective  of  the  failure  or  insolvency  of any  holder  an any
          interest in the Loan.  Borrower  further  agrees that the purchaser of
          any  such   participation   interests   may  enforce   its   interests
          irrespective of any personal claims or defenses that Borrower may have
          against Lender.

          Governing  Law.  This  Agreement  will be governed by,  construed  and
          enforced in  accordance  with federal law and the laws of the State of
          Oklahoma.  This  Agreement has been accepted by Lender in the State of
          Oklahoma.

          Joint and Several  Liability.  All  obligations of Borrower under this
          Agreement  shall be joint and several,  and all references to Borrower
          shall mean each and every  Borrower.  This  means  that each  Borrower
          signing below is responsible  for all  obligations in this  Agreement.
          Where  anyone or more of the  parties is a  corporation,  partnership,
          limited  liability  company or similar entity, it is not necessary for
          Lender to inquire into the powers of any of the  officers,  directors,
          partners,  members, or other agents acting or purporting to act on the
          entity's behalf,  and any obligations made or created in reliance upon
          the professed  exercise of such powers shall be guaranteed  under this
          Agreement.

          No Waiver by  Lender.  Lender  shall not be deemed to have  waived any
          rights under this Agreement unless such waiver is given in writing and
          signed  by  Lender.  No delay or  omission  on the part of  Lender  in
          exercising  any right  shall  operate as a waiver of such right or any
          other right. A waiver by Lender of a provision of this Agreement shall
          not  prejudice or constitute a waiver of Lender's  right  otherwise to
          demand strict compliance with that provision or any other provision of
          this Agreement.  No prior waiver by Lender,  nor any course of dealing
          between Lender and Borrower, or between Lender and any Grantor,  shall
          constitute a waiver of any of Lender's  rights or of any of Borrower's
          or any Grantor's  obligations as to any future transactions.  Whenever
          the consent of Lender is required under this  Agreement,  the granting
          of such  consent  by  Lender  in any  instance  shall  not  constitute
          continuing  consent to  subsequent  instances  where  such  consent is
          required  and in all cases such  consent may be granted or withheld in
          the sole discretion of Lender.

          Notices.  To the  extent  permitted  by  applicable  law,  any  notice
          required to be given under this  Agreement  shall be given in writing,
          and shall be effective when actually delivered, when actually received
          by telefacsimile  (unless  otherwise  required by law), when deposited
          with a nationally  recognized  overnight courier,  or, if mailed, when
          deposited  in the United  States mail,  as first  class,  certified or
          registered mail postage prepaid,  directed to the addresses shown near
          the beginning of this Agreement.  Any party may change its address for
          notices under this  Agreement by giving formal  written  notice to the
          other parties,  specifying that the purpose of the notice is to change
          the party's  address.  For notice  purposes,  Borrower  agrees to keep
          Lender  informed at all times of Borrower's  current  address.  To the
          extent  permitted  by  applicable  law,  if  there  is more  than  one
          Borrower,  any notice  given by Lender to any Borrower is deemed to be
          notice given to all Borrowers.

          Severability. If a court of competent jurisdiction finds any provision
          of this Agreement to be illegal,  invalid,  or unenforceable as to any
          person or  circumstance,  that  finding  shall not make the  offending
          provision illegal, invalid, or unenforceable as to any other person or
          circumstance. If feasible, the offending provision shall be considered
          modified  so that it  becomes  legal,  valid and  enforceable.  If the
          offending  provision  cannot be so  modified,  it shall be  considered
          deleted from this  Agreement.  Unless  otherwise  required by law, the
          illegality,  invalidity,  or unenforceability of any provision of this
          Agreement shall not affect the legality, validity or enforceability of
          any other provision of this Agreement.

          Subsidiaries and Affiliates of Borrower.  To the extent the context of
          any  provisions  of this  Agreement  makes it  appropriate,  including
          without limitation any representation,  warranty or covenant, the word
          "Borrower" as used in this  Agreement  shall include all of Borrower's
          subsidiaries and affiliates.  Notwithstanding  the foregoing  however,
          under no  circumstances  shall this  Agreement be construed to require
          Lender  to make any Loan or other  financial  accommodation  to any of
          Borrower's subsidiaries or affiliates.

          Successors and Assigns.  All covenants and agreements  contained by or
          on behalf of Borrower shall bind Borrower's successors and assigns and
          shall inure to the benefit of Lender and its  successors  and assigns.
          Borrower  shall  not,  however,  have the right to  assign  Borrower's
          rights under this Agreement or any interest therein, without the prior
          written consent of Lender.

          Survival of Representations and Warranties.  Borrower  understands and
          agrees   that  in  making   the  Loan,   Lender  is   relying  on  all
          representations,  warranties,  and covenants  made by Borrower in this
          Agreement  or in any  certificate  or other  instrument  delivered  by
          Borrower to Lender  under this  Agreement  or the  Related  Documents.
          Borrower further agrees that regardless of any  investigation  made by
          Lender,  all such  representations,  warranties  and  covenants,  will
          survive the making of the Loan and  delivery to Lender of ,the Related
          Documents,  shall be  continuing  in nature,  and shall remain in full
          force and effect until such time as Borrower's  Indebtedness  shall be
          paid in full,  or until  this  Agreement  shall be  terminated  in the
          manner provided above, whichever is the last to occur.

          Time is of the Essence.  Time is of the essence in the  performance of
          this Agreement.

DEFINITIONS.  The following capitalized words and terms shall have the following
meanings  when  used  in  this  Agreement.  Unless  specifically  stated  to the
contrary, all references to dollar amounts shall mean amounts in lawful money of
the United States of America. Words and terms used in the singular shall include
the  plural,  and the plural  shall  include  the  singular,  as the context may
require.  Words and terms not otherwise defined in this Agreement shall have the
meanings  attributed to such terms in the Uniform  Commercial  Code.  Accounting
words and terms not otherwise  defined in this Agreement shall have the meanings
assigned to them in accordance with generally accepted accounting  principles as
in effect on the date of this Agreement:

          Advance.  The word "Advance"  means a disbursement of Loan funds made,
          or to be made, to Borrower or on Borrower's behalf on a line of credit
          or  multiple  advance  basis  under the terms and  conditions  of this
          Agreement.

          Agreement. The word "Agreement" means this Business Loan Agreement, as
          this Business Loan Agreement may be amended or,  modified from time to
          time,  together  with all  exhibits  and  schedules  attached  to this
          Business Loan Agreement from time to time.

          Borrower. The word "Borrower" means Flotek Industries,  Inc.; Chemical
          and Equipment  Specialties,  Inc.; Neal's Technology,  Inc.; Plainsman
          Technology,   Inc.;   PADKO   International   Incorporated;   Material
          Translogistics,  Inc.;  Esses,  Inc.;  Turbeco,  Inc.; USA Petrovalve,
          Inc.; Trinity Tool, Inc.; and Petrovalve,  Inc., and all other persons
          and entities signing the Note in whatever capacity.

          Collateral.  The word  "Collateral"  means  all  property  and  assets
          granted as  collateral  security for a Loan,  whether real or personal
          property, whether granted directly or indirectly,  whether granted now
          or in the  future,  and  whether  granted  in the  form of a  security
          interest,  mortgage,  collateral mortgage, deed of trust,  assignment,
          pledge,  crop pledge,  chattel mortgage,  collateral chattel mortgage,
          chattel trust, factor's lien, equipment trust, conditional sale, trust
          receipt,  lien,  charge,  lien or title retention  contract,  lease or
          consignment  intended as a security  device,  or any other security or
          lien  interest  whatsoever,  whether  created  by  law,  contract,  or
          otherwise.

          Environmental  Laws. The words  "Environmental  Laws" mean any and all
          state, federal and local statutes, regulations and ordinances relating
          to the  protection  of  human  health  or the  environment,  including
          without   limitation   the   Comprehensive   Environmental   Response,
          Compensation, and Liability Act of 1980, as amended, 42 U.S.C. Section
          9601, et seq. ("CERCLA"), the Superfund Amendments and Reauthorization
          Act of 1986,  Pub. L. No. 99-499  ("SARA"),  the  Hazardous  Materials
          Transportation  Act, 49 U.S.C.  Section  1801,  et seq.,  the Resource
          Conservation  and Recovery  Act, 42 U.S.C.  Section  6901, et seq.; or
          other applicable state or federal laws, rules, or regulations  adopted
          pursuant thereto.

          Event of Default.  The words "Event of Default" mean any of the events
          of default set forth in this Agreement in the default  section of this
          Agreement.

          GAAP. The word "GAAP" means generally accepted accounting principles.

          Grantor.  The word  "Grantor"  means  each and all of the  persons  or
          entities  granting a Security Interest in any Collateral for the Loan,
          including  without  limitation all Borrowers  granting such a Security
          Interest.

          Guarantor.  The word  "Guarantor"  means  any  guarantor,  surety,  or
          accommodation party of any or all of the Loan.

          Guaranty.  The word  "Guaranty"  means the guaranty from  Guarantor to
          Lender;  including without limitation a guaranty of all or part of the
          Note.

          Hazardous Substances.  The words "Hazardous Substances" mean materials
          that, because of their quantity,  concentration or physical,  chemical
          or  infectious  characteristics,  may  cause  or  pose  a  present  or
          potential  hazard to human health or the  environment  when improperly
          used,   treated,   stored,   disposed  of,  generated,   manufactured,
          transported or otherwise handled. The words "Hazardous Substances" are
          used in their very broadest sense and include  without  limitation any
          and all hazardous or toxic  substances,  materials or waste as defined
          by or  listed  under  the  Environmental  Laws.  The  term  "Hazardous
          Substances" also includes, without limitation, petroleum and petroleum
          by products or any fraction thereof and asbestos.

          Indebtedness. The word "Indebtedness" means the indebtedness evidenced
          by the Note or Related Documents, including all principal and interest
          together with all other  indebtedness and costs and expenses for which
          Borrower  is  responsible  under  this  Agreement  or under any of the
          Related Documents.

          Lender.  The word  "Lender"  means Legacy  Bank,  its  successors  and
          assigns.

          Loan.   The  word  "Loan"  means  any  and  all  loans  and  financial
          accommodations  from  Lender  to  Borrower  whether  now or  hereafter
          existing,  and however  evidenced,  including without limitation those
          lows and financial accommodations described herein or described on any
          exhibit or schedule attached to this Agreement from time to time.

          Note.  The word "Note" means the Note  executed by Flotek  Industries,
          Inc.; Chemical,  and Equipment  Specialties,  Inc.; Neal's Technology,
          Inc.; Plainsman  Technology,  Inc.; PADKO International  Incorporated;
          Material  Translogistics,   Inc.,  Esses,  Inc.;  Turbeco,  Inc.;  USA
          Petrovalve,  Inc.;  Trinity Tool,  Inc.; and  Petrovalve,  Inc. in the
          principal amount of $854,350.00  dated January 4, 2002,  together with
          all renewals of,  extensions of,  modifications  of,  refinancings of,
          consolidations of, and substitutions for the note or credit agreement.

          Permitted  Liens.  The  words  "Permitted  Liens"  mean (1)  liens and
          security interests  securing  Indebtedness owed by Borrower to Lender;
          (2) liens for taxes,  assessments,  or similar  charges either not yet
          due or being  contested  in good  faith;  (3)  liens  of  materialmen,
          mechanics,  warehousemen,  or carriers, or other like liens arising in
          the ordinary course of business and securing obligations which are not
          yet  delinquent;  (4) purchase  money liens or purchase money security
          interests,  upon or in any,  property  acquired or held by Borrower in
          the ordinary course of business to secure indebtedness  outstanding on
          the date of this  Agreement  or  permitted  to be  incurred  under the
          paragraph of this Agreement titled "Indebtedness and Liens"; (5) liens
          and security  interests which, as of the date of this Agreement,  have
          been disclosed to and approved by the Lender in writing; and (6) those
          liens and security  interests  which in the  aggregate  constitute  an
          immaterial and  insignificant  monetary amount with respect to the net
          value of Borrower's assets.

          Related Documents.  The words "Related  Documents" mean all promissory
          notes, credit agreements,  loan agreements,  environmental agreements,
          guaranties,  security agreements,  mortgages, deeds of trust, security
          deeds, collateral mortgages, and all other instruments, agreements and
          documents,  whether now or hereafter existing,  executed in connection
          with the Loan.

          Security  Agreement.  The words "Security  Agreement" mean and include
          without limitation any agreements, promises, covenants,  arrangements,
          understandings or other agreements,  whether created by law, contract,
          or  otherwise,  evidencing,  governing,  representing,  or  creating a
          Security Interest.

          Security  Interest.   The  words  "Security  Interest"  mean,  without
          limitation,  any and all types of  collateral  security,  present  and
          future, whether in the form of a lien, charge, encumbrance;  mortgage,
          deed of trust, security deed, assignment, pledge, crop pledge, chattel
          mortgage,  collateral chattel mortgage,  chattel trust, factor's lien,
          equipment  trust,  conditional  sale,  trust  receipt,  lien or  title
          retention  contract,  lease  or  consignment  intended  as a  security
          device,  or any other  security or lien  interest  whatsoever  whether
          created by law, contract, or otherwise.


BORROWER ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS BUSINESS LOAN
AGREEMENT AND BORROWER AGREES TO ITS TERMS. THIS BUSINESS LOAN AGREEMENT IS
DATED JANUARY 4, 2002.


BORROWER:


FLOTEK INDUSTRIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Flotek Industries, Inc.


By:/s/ Randall D. Keys
   ----------------------------------------------------------
   Randall  D. Keys,  Chief  Financial  Officer of
   Flotek Industries, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S. Penny, President of Flotek Industries, Inc.


CHEMICAL AND EQUIPMENT SPECIALTIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Chemical and Equipment of
   Chemical and Equipment Specialties, Inc.


By:/s/ Randall D. Keys
   ----------------------------------------------------------
   Randall D.  Keys,  Chief  Financial  Officer of
   Chemical and Equipment Specialties, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S. Penny, President of Chemical and Equipment
   Specialties, Inc.







NEAL'S TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Neal's Technology, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S.Penny, President of Neal's Technology, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Neal's Technology, Inc.


PLAINSMAN TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Plainsman Technology, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S.Penny, President of Plainsman Technology, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Plainsman Technology, Inc.



ESSES, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Esses, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn  S.   Penny, President of Esses, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Esses, Inc.


PADKO INTERNATIONAL, INCORPORATED

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of PADKO International
   Incorporated


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S.Penny, President of PADKO International Incorporated




By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of PADKO
   International Incorporated


TURBECO, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Turbeco, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn  S.   Penny,   President   of
   Turbeco, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Turbeco, Inc.


USA PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of USA Petrovalve, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn S.  Penny,  President  of USA
   Petrovalve, Inc.



By:/s/ Tom D. Morton
  ----------------------------------------------------------
   Tom D. Morton, Vice President of USA Petrovalve, Inc.


TRINITY TOOL, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Trinity Tool, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn  S.   Penny,   President   of
   Trinity Tool, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Trinity Tool, Inc.


MATERIAL TRANSLOGISTICS, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Material Translogistics, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn  S.   Penny,   President   of
   Material
   Translogistics, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Material
   Translogistics, Inc.


PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   ----------------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Petrovalve, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------------
   Glenn  S.   Penny,   President   of
   Petrovalve, Inc.


By:/s/ Tom D. Morton
   ----------------------------------------------------------
   Tom D. Morton, Vice President of Petrovalve, Inc.


LENDER:

LEGACY BANK

By:/s/ Authorized Signer
   ----------------------------------------------------------
   Authorized Signer





                                 PROMISSORY NOTE


Principal: $854,350.00

Loan Date: 01-04-2002

Maturity:  01-04-2005

Borrower:Flotek Industries, Inc. (TIN:  77-0709256);        Lender: Legacy Bank
         Chemical and Equipment Specialties, Inc. (TIN:     Legacy Bank
         73-1591850); Neal's Technology, Inc. (TIN:         PO Box 1109
         73-1512452); Plainsman Technology, Inc. (TIN:      2024 N.  Hwy 81
         73-1218459); PADKO International Incorporated      Duncan,OK 73534-1109
         (TIN:   73-1443489); Material Translogistics, Inc.
         (TIN:   73-1605226); Esses, Inc. (TIN:
         73-1386155); Turbeco, Inc. (TIN:  76-0228889);
         USA Petrovalve, Inc. (TIN:  76-0448098); Trinity
         Tool, Inc. (TIN:  76-0517268); and Petrovalve, Inc.
         (TIN:  76-0513130)
         7030 Empire Central Drive
         Houston, TX 77040

PROMISE TO PAY. Flotek Industries, Inc., Chemical and Equipment Specialties,
Inc., Neal's Technology, Inc.; Plainsman Technology, Inc.; PADKO International
Incorporated; Material Translogistics, Inc.; Esses, Inc.; Turbeco, Inc.; USA
Petrovalve, Inc.; Trinity Tool, Inc.; and Petrovalve, Inc, ("Borrower") jointly
and severally promise to pay to Legacy Bank ("Lender"), or order, in lawful
money of the United States of America, the principal amount of Eight Hundred
Fifty-four Thousand Three Hundred Fifty & 00/100 Dollars ($854,350.00), together
with interest on the unpaid principal balance from January 4, 2002, until paid
in full.

PAYMENT. Subject to any payment changes resulting from changes in the Index,
Borrower will pay this loan in 36 payments of $25,923.07 each payment.
Borrower's first payment is due February 4, 2002, and all subsequent payments
are due on the same day of each month after that. Borrower's final payment will
be due on January 4, 2005, and will be for all principal and all accrued
interest not yet paid. Payments include principal and interest. Unless otherwise
agreed or required by applicable law, payments will be applied first to any
unpaid collection costs and any late charges, then to any unpaid interest, and
any remaining amount to principal. The annual interest rate for this Note is
computed on a 365/360 basis; that is, by applying the ratio of the annual
interest rate over a year of 360 days, multiplied by the outstanding principal
balance, multiplied by the actual number of days the principal balance is
outstanding. Borrower will pay Lender at Lender's address shown above or at such
other place as Lender may designate in writing.

VARIABLE INTEREST RATE. The interest rate on this Note is subject to change from
time to time based on changes in an independent index which is the minimum prime
lending rate for large U.S. Money Center Commercial banks as published in the
Money Rate Section of the Wall Street Journal (the "Index"). The Index is not
necessarily the lowest rate charged by Lender on its loans. If the Index becomes
unavailable during the term of this loan, Lender may designate a substitute
index after notice to Borrower. Lender will tell Borrower the current Index rate
upon Borrower's request. The interest rate change will not occur more often than
each quarter. Borrower understands that Lender may make loans based on other
rates as well. The Index currently is 4.750% per annum. The interest rate to be
applied to the unpaid principal balance of this Note will be at a rate of 1.000
percentage point over the Index, resulting in an initial rate of 5.750% per
annum. NOTICE: Under no circumstances will the interest rate on this Note be
more than the maximum rate allowed by applicable law. Whenever increases occur
in the interest rate, Lender, at its option, may do one or more of the
following: (A) increase Borrower's payments to ensure Borrower's loan will pay
off by its original final maturity date, (B) increase Borrower's payments to
cover accruing interest, (C) increase the number of Borrower's payments, and (D)
continue Borrower's payments at the same amount and increase Borrower's final
payment.

PREPAYMENT. Borrower agrees that all loan fees and other prepaid finance charges
are earned fully as of the date of the loan and will not be subject to refund
upon early payment (whether voluntary or as a result of default), except as
otherwise required by law. Except for the foregoing, Borrower may pay without
penalty all or a portion of the amount owed earlier than it is due. Early
payments will not, unless agreed to by Lender in writing, relieve Borrower of
Borrower's obligation to continue to make payments under the payment schedule.
Rather, early payments will reduce the principal balance due and may result in
Borrower's making fewer payments. Borrower agrees not to send Lender payments
marked "paid in full", "without recourse", or similar language. If Borrower
sends such a payment, Lender may accept it without losing any of Lender's rights
under this Note, and Borrower will remain obligated to pay any further amount
owed to Lender. All written communications concerning disputed amounts,
including any check or other payment instrument that indicates that the payment
constitutes "payment in full" of the amount owed or that is tendered with other
conditions or limitations or as full satisfaction of a disputed amount must be
mailed or delivered to: Legacy Bank, Legacy Bank, PO Box 1109, 2024 N Hwy 81,
Duncan, OK 73534-1109.

LATE CHARGE. If a payment is 11 days or more late, Borrower will be charged
5.000% of the unpaid portion of the regularly scheduled payment or $20.00,
whichever is greater.

INTEREST AFTER DEFAULT. Upon default, including failure to pay upon final
maturity, Lender, at its option, may, if permitted under applicable law,
increase the variable interest rate on this Note to 21.000% per annum. The
interest rate will not exceed the maximum rate permitted by applicable law.

DEFAULT.  Each of the following shall constitute an event of default
          ("Event of Default") under this Note:

         Payment Default.  Borrower fails to make any payment when due under
         this Note.

         Other Defaults. Borrower fails to comply with or to perform any other
         term, obligation, covenant or condition contained in this Note or in
         any of the related documents or to comply with onto perform any term,
         obligation, covenant or condition contained in any other agreement
         between Lender and Borrower.

         Default in Favor of Third Parties. Borrower or any Grantor defaults
         under any loan, extension of credit, security agreement, purchase or
         sales agreement, or any other agreement, in favor of any other creditor
         or person that may materially affect any of Borrower's property or
         Borrower's ability to repay this Note or perform Borrower's obligations
         under this Note, or any of the related documents.

         False Statements. Any warranty, representation or statement made or
         furnished to Lender by Borrower or on Borrower's behalf under this Note
         or the related documents is false or misleading in any material
         respect, either, now or at the time made or furnished or becomes false
         or misleading at any time thereafter.

         Insolvency. The dissolution or termination of Borrower's existence as a
         going business, the insolvency of Borrower, the appointment of a
         receiver for any part of Borrower's property, any assignment for the
         benefit of creditors, any type of creditor workout, or the commencement
         of any proceeding under any bankruptcy or insolvency laws by or against
         Borrower.

         Creditor or Forfeiture Proceedings. Commencement of foreclosure or
         forfeiture proceedings, whether by judicial proceeding, self-help,
         repossession or any other method, by any creditor of Borrower or by any
         governmental agency against any collateral securing the loan. This
         includes a garnishment of any of Borrower's accounts, including deposit
         accounts, with Lender. However, this Event of Default shall not apply
         if there is a good faith dispute by Borrower as to the validity or
         reasonableness of the claim which is the basis of the creditor or
         forfeiture proceeding and if Borrower gives Lender written notice of
         the creditor or forfeiture proceeding and deposits with Lender monies
         or a surety bond for the creditor or forfeiture proceeding, in an
         amount determined by Lender, in its sole discretion, as being an
         adequate reserve or bond for the dispute.

         Events Affecting Guarantor. Any of the preceding events occurs with
         respect to any guarantor, endorser, surety, or accommodation party of
         any of the indebtedness or any guarantor, endorser, surety, or
         accommodation party dies or becomes incompetent, or revokes or disputes
         the validity of, or liability under, any guaranty of the indebtedness
         evidenced by this Note. In the event of a death, Lender, at its option,
         may, but shall not be required to, permit the guarantor's estate to
         assume unconditionally the obligations arising under the guaranty in a
         manner satisfactory to Lender, and, in doing so, cure any Event of
         Default.

         Change In  Ownership.  Any change in ownership of  twenty-five  percent
         (25 %) or more of the common stock of Borrower.

         Adverse Change. A material adverse change occurs in Borrower's
         financial condition, or Lender believes the prospect of payment or
         performance of this Note is impaired.

         Cure Provisions. If any default other than a default in payment is
         curable and if Borrower has not been given a notice of a breach of the
         same provision, of this Note within the preceding twelve (12) months,
         it may be cured (and no event, of default will have occurred) if
         Borrower, after receiving written notice from Lender demanding cure of
         such default: (1) cures the default within ten (10) days; or (2) if the
         cure requires more than ten (10) days, immediately initiates steps
         which Lender deems in Lender's sole discretion to be sufficient to cure
         the default and thereafter continues and completes all reasonable and
         necessary steps sufficient to produce compliance as soon as reasonably
         practical.

LENDER'S RIGHTS. Upon default, Lender may declare the entire unpaid principal
balance on this Note and all accrued unpaid interest immediately due, and then
Borrower will pay that amount.

ATTORNEYS' FEES; EXPENSES. Lender may hire or pay someone else to help collect
this Note if Borrower does not pay. Borrower will pay Lender that amount. This
includes, subject to any limits under applicable law, Lender's attorneys' fees
and Lender's legal expenses, whether or not there is a lawsuit, including
without limitation all attorneys' fees and legal expenses for bankruptcy
proceedings (including efforts to modify or vacate any automatic stay or
injunction), and appeals. If not prohibited by applicable law, Borrower also
will pay any court costs, in addition to all other sums provided by law.

GOVERNING  LAW.  This  Note will be  governed  by,  construed  and  enforced  in
accordance with federal law and the laws of the State of Oklahoma. This Note has
been accepted by Lender in the State of Oklahoma.

DISHONORED ITEM FEE. Borrower will pay a fee to Lender of $20.00 if Borrower
makes a payment on Borrower's loan and the check or other payment order
including any preauthorized charge with which Borrower pays is later dishonored.

RIGHT OF SETOFF. To the extent permitted by applicable law, Lender reserves a
right of setoff in all Borrower's accounts with Lender (whether checking,
savings, or some other account). This includes all accounts Borrower holds
jointly with someone else and all accounts Borrower may open in the future.
However, this does not include any IRA or Keogh accounts, or any trust accounts
for which setoff would be prohibited by law. Borrower authorizes Lender, to the
extent permitted by applicable law, to charge or setoff all sums owing on the
indebtedness against any and all such accounts, and, at Lender's option, to
administratively freeze all such accounts to allow Lender to protect Lender's
charge and setoff rights provided in this paragraph.

COLLATERAL. Borrower acknowledges this Note is secured by in addition to any
other collateral this note is also secured by Security agreements and Mortgages
on real property in Stephens County, Oklahoma from Chemical and Equipment
Specialties, Inc. to Legacy Bank dated 01-23-2001, 05-30-2001 and 9-28-2001 and
filed with the clerk of Oklahoma County, Oklahoma.

SUCCESSOR INTERESTS. The terms of this Note shall be binding upon Borrower, and
upon Borrower's heirs, personal representatives, successors and assigns, and
shall inure to the benefit of Lender and its successors and assigns.

NOTIFY US OF INACCURATE INFORMATION WE REPORT TO CONSUMER REPORTING AGENCIES.
Please notify us if we report any inaccurate information about your account(s)
to a consumer reporting agency. Your written notice describing the specific
inaccuracy(ies) should be sent to us at the following address; Legacy Bank PO
Box 1038 Hinton, OK 73047.

GENERAL PROVISIONS. Lender may delay or forgo enforcing any of its rights or
remedies under this Note without losing them. Each Borrower understands and
agrees that, with or without notice to Borrower, Lender may with respect to any
other Borrower (a) make one or more additional secured or unsecured loans or
otherwise extend additional credit; (b) alter, compromise, renew, extend,
accelerate, or otherwise change one or more times the time for payment or other
terms any indebtedness, including increases and decreases of the rate of
interest on the indebtedness; (c) exchange, enforce, waive, subordinate, fail or
decide not to perfect, and release any security, with or without the
substitution of new collateral; (d) apply such security and direct the order or
manner of sale thereof, including without limitation, any non-judicial sale
permitted by the terms of the controlling security agreements, as Lender in its
discretion may determine; (e) release, substitute, agree not to sue, or deal
with any one or more of Borrower's sureties, endorsers, or other guarantors on
any terms or in any manner Lender may choose; and (f) determine how, when and
what application of payments and credits shall be made on any other indebtedness
owing by such other Borrower. Borrower and any other person who signs,
guarantees or endorses this Note, to the extent allowed by law, waive
presentment, demand for payment, and notice of dishonor. Upon any change in the
terms of this Note, and unless otherwise expressly stated in writing, no party
who signs this Note, whether as maker, guarantor, accommodation maker or
endorser, shall be released from liability. All such parties agree that Lender
may renew or extend (repeatedly and for any length of time) this loan or release
any party or guarantor or collateral; or impair, fail to realize upon or perfect
Lender's security interest in the collateral; and take any other action deemed
necessary by Lender without the consent of or notice to anyone. All such parties
also agree that Lender may modify this loan without the consent of or notice to
anyone other than the party with whom the modification is made. The obligations
under this Note are joint and several.






PRIOR TO SIGNING THIS NOTE, EACH BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS
OF THIS NOTE, INCLUDING THE VARIABLE INTEREST RATE PROVISIONS. EACH BORROWER
AGREES TO THE TERMS OF THE NOTE. BORROWER ACKNOWLEDGES RECEIPT OF A COMPLETED
COPY OF THIS PROMISSORY NOTE.

BORROWER:


FLOTEK INDUSTRIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Flotek Industries, Inc.


By:/s/ Randall D. Keys
   -----------------------------------------------------
   Randall  D. Keys,  Chief  Financial Officer
   of Flotek, Industries, Inc.

By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny, President of Flotek Industries, Inc.


CHEMICAL AND EQUIPMENT SPECIALTIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Chemical and Equipment
   Specialties, Inc.

By:s/ Randall D. Keys
   -----------------------------------------------------
   Randall D.Keys, Chief Financial Officer
   of Chemical and Equipment Specialties, Inc.

By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny, President of Chemical and Equipment
   Specialties, Inc.


NEAL'S TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Neal's Technology, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.Penny, President of Neal's Technology, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Neal's
   Technology, Inc.


PLAINSMAN TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Plainsman Technology, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.Penny,Presiden of Plainsman Technology, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Plainsman Technology, Inc.


ESSES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Esses, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.Penny, President of  Esses, Inc.

By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Esses, Inc.


PADKO INTERNATIONAL, INCORPORATED

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of PADKO International Incorporated


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny,  President of PADKO International Incorporated


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of PADKO
   International Incorporated


TURBECO, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Turbeco, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.   Penny,   President   of
   Turbeco, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Turbeco, Inc.


USA PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of USA Petrovalve, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.  Penny,  President  of USA
   Petrovalve, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of USA Petrovalve, Inc.


TRINITY TOOL, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Trinity Tool, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.   Penny,   President   of
   Trinity Tool, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Trinity Tool, Inc.


MATERIAL TRANSLOGISTICS, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Material Translogistics, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------
   Glenn S.Penny, President of Material Translogistics, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Material
   Translogistics, Inc.


PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Petrovalve, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.Penny, President of Petrovalve, Inc.



By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Petrovalve, Inc.






                          COMMERCIAL SECURITY AGREEMENT


Principal:   $854,350.00

Loan Date:  01-04-2002

Maturity:  01-04-2005

Borrower:Flotek Industries, Inc. (TIN:  77-0709256);        Lender: Legacy Bank
         Chemical and Equipment Specialties, Inc. (TIN:     Legacy Bank
         73-1591850); Neal's Technology, Inc. (TIN:         PO Box 1109
         73-1512452); Plainsman Technology, Inc. (TIN:      2024 N.  Hwy 81
         73-1218459); PADKO International Incorporated      Duncan,OK 73534-1109
         (TIN:   73-1443489); Material Translogistics, Inc.
         (TIN:   73-1605226); Esses, Inc. (TIN:
         73-1386155); Turbeco, Inc. (TIN:  76-0228889);
         USA Petrovalve, Inc. (TIN:  76-0448098); Trinity
         Tool, Inc. (TIN:  76-0517268); and Petrovalve, Inc.
         (TIN:  76-0513130)
         7030 Empire Central Drive
         Houston, TX 77040

THIS COMMERCIAL  SECURITY  AGREEMENT dated January 4, 2002, is made and executed
between  Flotek  Industries,  Inc.;  Chemical and Equipment  Specialties,  Inc.;
Neal's  Technology,   Inc.;  Plainsman  Technology,  Inc.;  PADKO  International
Incorporated;  Material  Translogistics,  Inc.; Esses, Inc.; Turbeco,  Inc.; USA
Petrovalve,  Inc.;  Trinity Tool,  Inc.; and  Petrovalve,  Inc.  ("Grantor") and
Legacy Bank ("Lender").

GRANT OF SECURITY INTEREST. For valuable consideration, Grantor grants to Lender
a security interest in the Collateral to secure the Indebtedness and agrees that
Lender  shall  have the  rights  stated in this  Agreement  with  respect to the
Collateral, in addition to all other rights which Lender may have by law.

COLLATERAL  DESCRIPTION.  The word  "Collateral" as used in this Agreement means
the  following  described  property,  whether now owned or  hereafter  acquired,
whether now  existing or  hereafter  arising,  and  wherever  located,  in which
Grantor  is  giving  to  Lender  a  security  interest  for the  payment  of the
Indebtedness  and performance of all other  obligations  under the Note and this
Agreement:

          All  Inventory,   Chattel  Paper,  Accounts,   Equipment  and  General
          Intangibles   including   but  not  limited  to  a  contract   between
          Schlumberger Inc. and Material Translogistics,  Inc. for the Raceland,
          LA transload  facility,  together  with the  following  property:  All
          Fixtures.

In addition, the word "Collateral" also includes all the following,  whether now
owned or hereafter  acquired,  whether now existing or  hereafter  arising,  and
wherever located:

          (A) All accessions, attachments,  accessories, tools, parts, supplies,
          replacements  of and  additions  to any  of the  collateral  described
          herein, whether added now or later.

          (B) All products and produce of any of the property  described in this
          Collateral section.

          (C) All accounts,  general  intangibles,  instruments,  rents, monies,
          payments,  and all other rights,  arising,  out of a sale,  lease,  or
          other disposition of any of the property  described in this Collateral
          section.

          (D)  All  proceeds  (including  insurance  proceeds)  from  the  sale,
          destruction,  loss,  or  other  disposition  of any  of  the  property
          described in this Collateral section,  and sums due from a third party
          who has  damaged or  destroyed  the  Collateral  or from that  party's
          insurer, whether due to judgment, settlement or other process.

          (E) All records and data relating to any of the property  described in
          this Collateral section, whether in the form of a writing, photograph,
          microfilm,  microfiche,  or  electronic  media,  together  with all of
          Grantor's right,  title, and interest in and to all computer  software
          required to utilize, create, maintain, and process any such records or
          data on electronic media.

Despite any other  provision of this  Agreement,  Lender is not granted and will
not have, a  nonpurchase  money  security  interest in household  goods,  to the
extent  such a security  interest  would be  prohibited  by  applicable  law. In
addition,  if because of the type of any Property,  Lender is required to give a
notice of the right to cancel under Truth in Lending for the Indebtedness,  then
Lender  will not have a security  interest in such  Collateral  unless and until
such a notice is given.

CROSS-COLLATERALIZATION.  In addition to the Note,  this  Agreement  secures all
obligations, debts and liabilities, plus interest thereon, of Grantor to Lender,
or any one or more of them, as well as all claims by Lender  against  Grantor or
any one or more of them,  whether now  existing or  hereafter  arising,  whether
related or unrelated to the purpose of the Note, whether voluntary or otherwise,
whether due or not due, direct or indirect, determined or undetermined, absolute
or  contingent,  liquidated  or  unliquidated  whether  Grantor  may  be  liable
individually  or jointly with others,  whether  obligated as guarantor,  surety,
accommodation party or otherwise,  and whether recovery upon such amounts may be
or hereafter  may become barred by any statute of  limitations,  and whether the
obligation  to repay such  amounts  may be or  hereafter  may  become  otherwise
unenforceable.  However, this Agreement shall not secure, and the "Indebtedness"
shall not include,  any obligations  arising under Chapters 3 and 4 of Title 79,
Revised Civil Statutes of Texas, 1925, as amended.

RIGHT OF SETOFF.  To the extent  permitted by applicable  law, Lender reserves a
right of  setoff  in all  Grantor's  accounts  with  Lender  (whether  checking,
savings,  or some other  account).  This  includes  all accounts  Grantor  holds
jointly  with  someone  else and all  accounts  Grantor  may open in the future.
However,  this does not include any IRA or Keogh accounts, or any trust accounts
for which setoff would be prohibited by law. Grantor  authorizes  Lender, to the
extent  permitted by  applicable  law, to charge or setoff all sums owing on the
Indebtedness  against any and all such  accounts'  and, at Lender's  option,  to
administratively  freeze all such  accounts to allow Lender to protect  Lender's
charge and setoff rights provided in this paragraph.

GRANTOR'S  REPRESENTATIONS  AND WARRANTIES WITH RESPECT TO THE COLLATERAL.  With
respect to the Collateral, Grantor represents and promises to Lender that:

          Perfection of Security  Interest.  Grantor agrees to execute financing
          statements  and to take whatever other actions are requested by Lender
          to perfect and continue  Lender's security interest in the Collateral.
          Upon request of Lender,  Grantor will deliver to Lender any and all of
          the documents  evidencing or constituting the Collateral,  and Grantor
          will note  Lender's  interest  upon any and all  chattel  paper if not
          delivered to Lender for possession by Lender.

          Notices to Lender.  Grantor will promptly  notify Lender in writing at
          Lender's  address  shown above (or such other  addresses as Lender may
          designate  from time to time)  prior to any (1)  change  in  Grantor's
          name; (2) change in Grantor's assumed business name(s);  (3) change in
          the  management  of  any  Corporation   Grantor;  (4)  change  in  the
          authorized  signer(s);   (5)  change  in  Grantor's  principal  office
          address; (6) change in Grantor's state of organization; (7) conversion
          of Grantor  to a new or  different  type of  business  entity;  or (8)
          change in any other  aspect of Grantor  that  directly  or  indirectly
          relates to any  agreements  between  Grantor and Lender.  No change in
          Grantor's name or state of  organization  will take effect until after
          Lender has received notice.

          No Violation.  The execution and delivery of this  Agreement  will not
          violate any law or agreement  governing Grantor or to which Grantor is
          a party, and its certificate or articles of  incorporation  and bylaws
          do not prohibit any term or condition of this Agreement.

          Enforceability of Collateral. To the extent the Collateral consists of
          accounts,  chattel paper,  or general  intangibles,  as defined by the
          Uniform  Commercial  Code, the Collateral is enforceable in accordance
          with its terms,  is genuine,  and fully  complies with all  applicable
          laws  and  regulations   concerning   form,   content  and  manner  of
          preparation and execution,  and all persons  appearing to be obligated
          on the  Collateral  have authority and capacity to contract and are in
          fact obligated as they appear to be on the Collateral. At the time any
          Account becomes subject to a security interest in favor of Lender, the
          Account shall be a good and valid account  representing an undisputed;
          bona fide indebtedness incurred by the account debtor, for merchandise
          held  subject  to  delivery  instructions  or  previously  shipped  or
          delivered  pursuant to a contract of sale, or for services  previously
          performed by Grantor with or for the account  debtor.  So long as this
          Agreement remains in effect, Grantor shall not, without Lender's prior
          written consent,  compromise,  settle, adjust, or extend payment under
          or with  regard to any such  Accounts.  There  shall be no setoffs or,
          counterclaims,  against any of the Collateral,  and no agreement shall
          have been made under which any  deductions or discounts may be claimed
          concerning  the  Collateral  except,  those  disclosed  to  Lender  in
          writing.

          Location of the Collateral. Except in the ordinary course of Grantor's
          business,  Grantor agrees to keep the Collateral (or to the extent the
          Collateral consists of intangible property such as accounts or general
          intangibles,  the records  concerning  the  Collateral)  at  Grantor's
          address  shown above or at such other  locations as are  acceptable to
          Lender. Upon Lender's request,  Grantor will deliver to Lender in form
          satisfactory  to Lender a schedule of real  properties  and Collateral
          locations   relating  to  Grantor's   operations,   including  without
          limitation  the  following:  (1) all real property  Grantor owns or is
          purchasing;  (2) all real property Grantor is renting or leasing;  (3)
          all storage facilities  Grantor owns, rents,  leases, or uses; and (4)
          all other properties where Collateral is or may be located.

          Removal of the Collateral.  Except in the ordinary course of Grantor's
          business,  including the sales of inventory,  Grantor shall not remove
          the  Collateral  from its existing  location  without  Lender's  prior
          written  consent.  To the  extent  that  the  Collateral  consists  of
          vehicles,  or other titled property,  Grantor shall not take or permit
          any action which would require  application for  certificates of title
          for the vehicles  outside the State of Texas,  without  Lender's prior
          written consent.  Grantor shall, whenever requested,  advise Lender of
          the exact location of the Collateral.

          Transactions  Involving  Collateral.  Except  for  inventory  sold  or
          accounts collected in the ordinary course of Grantor's business, or as
          otherwise  provided  for in this  Agreement,  Grantor  shall not sell,
          offer to sell,  or  otherwise  transfer or dispose of the  Collateral.
          While Grantor is not in default under this Agreement, Grantor may sell
          inventory, but only in the ordinary course of its business and only to
          buyers who qualify as a buyer in the ordinary  course of  business.  A
          sale in the ordinary  course of Grantor's  business does not include a
          transfer in partial or total  satisfaction of a debt or any bulk sale.
          Grantor shall not pledge,  mortgage,  encumber or otherwise permit the
          Collateral to be subject to any lien, security interest,  encumbrance,
          or  charge,  other than the  security  interest  provided  for in this
          Agreement,  without the prior written consent of Lender. This includes
          security  interests even if junior in right to the security  interests
          granted under this  Agreement.  Unless waived by Lender,  all proceeds
          from any disposition of the Collateral (for whatever  reason) shall be
          held in trust for  Lender and shall not be  commingled  with any other
          funds; provided however, this requirement shall not constitute consent
          by  Lender to any sale or other  disposition.  Upon  receipt,  Grantor
          shall immediately deliver any such proceeds to Lender.

          Title.  Grantor  represents  and warrants to Lender that Grantor holds
          good and  marketable  title to the  Collateral,  free and clear of all
          liens  and  encumbrances  except  for the lien of this  Agreement.  No
          financing  statement  covering any of the Collateral is on file in any
          public  office other than those which  reflect the  security  interest
          created  by  this  Agreement  or  to  which  Lender  has  specifically
          consented.  Grantor  shall defend  Lender's  rights in the  Collateral
          against the claims and demands of all other persons.

          Repairs and Maintenance.  Grantor agrees to keep and maintain,  and to
          cause  others to keep and  maintain,  the  Collateral  in good  order,
          repair and  condition  at all times  while this  Agreement  remains in
          effect.  Grantor  further  agrees to pay when due all  claims for work
          done on, or services rendered or material furnished in connection with
          the Collateral so that no lien or encumbrance may ever attach to or be
          filed against the Collateral.

          Inspection   of   Collateral.    Lender   and   Lender's    designated
          representatives  and  agents  shall  have the right at all  reasonable
          times to examine and inspect the Collateral wherever located.

          Taxes,  Assessments  and Liens.  Grantor  will pay when due all taxes,
          assessments and liens upon the Collateral,  its use or operation, upon
          this  Agreement,  upon any  promissory  note or notes  evidencing  the
          Indebtedness,  or upon any of the other Related Documents. Grantor may
          withhold  any such payment or may elect to contest any lien if Grantor
          is in good faith  conducting an appropriate  proceeding to contest the
          obligation to pay and so long as Lender's  interest in the  Collateral
          is not  jeopardized  in Lender's  sole opinion.  If the  Collateral is
          subjected to a lien which is not discharged  within fifteen (15) days,
          Grantor shall deposit with Lender cash, a sufficient  corporate surety
          bond or other security satisfactory to Lender in an amount adequate to
          provide  for the  discharge  of the  lien  plus any  interest,  costs,
          Lender's reasonable attorneys' fees or other charges that could accrue
          as a result of foreclosure or sale of the  Collateral.  In any contest
          Grantor  shall  defend  itself and Lender and shall  satisfy any final
          adverse judgment before  enforcement  against the Collateral.  Grantor
          shall name  Lender as an  additional  obligee  under any  surety  bond
          furnished  in the  contest  proceedings.  Grantor  further  agrees  to
          furnish  Lender  with  evidence  that  such  taxes,  assessments,  and
          governmental  and other charges have been paid in full and in a timely
          manner.  Grantor may withhold any such payment or may elect to contest
          any  lien  if  Grantor  is in good  faith  conducting  an  appropriate
          proceeding  to contest the  obligation  to pay and so long as Lender's
          interest in the Collateral is not jeopardized.

          Compliance  with  Governmental  Requirements.   Grantor  shall  comply
          promptly  with all  laws,  ordinances,  rules and  regulations  of all
          governmental  authorities,  now or hereafter in effect,  applicable to
          the  ownership,  production,  disposition,  or use of the  Collateral.
          Grantor  may  contest  in  good  faith  any  such  law,  ordinance  or
          regulation and withhold  compliance  during any proceeding,  including
          appropriate  appeals,  so long as Lender's interest in the Collateral,
          in Lender's opinion, is not jeopardized.

          Hazardous  Substances.   Grantor  represents  and  warrants  that  the
          Collateral never has been, and never will be so long as this Agreement
          remains  a  lien  on  the   Collateral,   used  in  violation  of  any
          Environmental  Laws  or  for  the  generation,  manufacture,  storage,
          transportation,  treatment, disposal, release or threatened release of
          any Hazardous Substance.  The representations and warranties contained
          herein are based on  Grantor's  due  diligence  in  investigating  the
          Collateral for Hazardous  Substances.  Grantor hereby (1) releases and
          waives any future claims against Lender for indemnity or  contribution
          in the event Grantor  becomes  liable for cleanup or other costs under
          any Environmental  Laws, and (2) agrees to indemnify and hold harmless
          Lender  against any and all claims and losses  resulting from a breach
          of this  provision of this  Agreement.  This  obligation  to indemnify
          shall survive the payment of the  Indebtedness and the satisfaction of
          this Agreement.

          Maintenance of Casualty Insurance.  Grantor shall procure and maintain
          all risks  insurance,  including  without  limitation  fire, theft and
          liability  coverage  together with such other  insurance as Lender may
          require with respect to the Collateral,  in form,  amounts,  coverages
          and basis reasonably,  acceptable to Lender. Grantor, upon request of,
          Lender,  will  deliver  to Lender  from time to time the  policies  or
          certificates of insurance in form  satisfactory  to Lender,  including
          stipulations  that  coverages  will  not be  cancelled  or  diminished
          without at least ten (10) days' prior written notice to Lender and not
          including any  disclaimer  of the  insurer's  liability for failure to
          give such a notice.  Each  insurance  policy  also  shall  include  an
          endorsement  providing  that  coverage  in favor of Lender will not be
          impaired in any way by any act,  omission or default of Grantor or any
          other person. In connection with all policies covering assets in which
          Lender holds or is offered a security  interest,  Grantor will provide
          Lender  with such loss  payable  or other  endorsements  as Lender may
          require.  If  Grantor  at any time  fails to  obtain or  maintain  any
          insurance as required under this Agreement,  Lender may (but shall not
          be obligated  to) obtain such  insurance as Lender deems  appropriate,
          including if Lender so chooses "single interest insurance," which will
          cover only Lender's interest in the Collateral.

          Application  of Insurance  Proceeds.  Grantor  shall  promptly  notify
          Lender of any loss or damage to the Collateral.  Lender may make proof
          of loss if  Grantor  fails to do so  within  fifteen  (15) days of the
          casualty.  All proceeds of any insurance on the Collateral,  including
          accrued  proceeds  thereon,  shall  be held by  Lender  as part of the
          Collateral. If Lender consents to repair or replacement of the damaged
          or destroyed  Collateral,  Lender shall,  upon  satisfactory  proof of
          expenditure,  pay or  reimburse  Grantor  from  the  proceeds  for the
          reasonable cost of repair or  restoration.  If Lender does not consent
          to repair or  replacement  of the  Collateral,  Lender  shall retain a
          sufficient amount of the proceeds to pay all of the Indebtedness,  and
          shall pay the balance to  Grantor.  Any  proceeds  which have not been
          disbursed  within six (6) months after their receipt and which Grantor
          has not committed to the repair or restoration of the Collateral shall
          be used to prepay the Indebtedness.

          Insurance Reserves. Lender may require Grantor to maintain with Lender
          reserves for payment of insurance  premiums,  which  reserves shall be
          created by monthly  payments from Grantor of a sum estimated by Lender
          to be  sufficient  to produce,  at least  fifteen (15) days before the
          premium due date,  amounts at least equal to the insurance premiums to
          be paid.  .If  fifteen  (15) days before  payment is due,  the reserve
          funds are  insufficient,  Grantor shall upon demand pay any deficiency
          to  Lender.  The  reserve  funds  shall be held by Lender as a general
          deposit and shall  constitute  a  non-interest-bearing  account  which
          Lender may satisfy by payment of the insurance premiums required to be
          paid by Grantor as they become  due.  Lender does not hold the reserve
          funds in trust for Grantor, and Lender is not the agent of Grantor for
          payment of the insurance premiums required to be paid by Grantor.  The
          responsibility for the payment of premiums shall remain Grantor's sole
          responsibility.

          Insurance Reports.  Grantor,  upon request of Lender, shall furnish to
          Lender  reports on each  existing  policy of  insurance  showing  such
          information as Lender may reasonably  request including the following:
          (1) the name of the insurer;  (2) the risks insured; (3) the amount of
          the policy;  (4) the property  insured;  (5) the then current value on
          the  basis of which  insurance  has been  obtained  and the  manner of
          determining that value; and (6) the expiration date of the policy.  In
          addition, Grantor shall upon request by Lender (however not more often
          than annually) have an independent  appraiser  satisfactory  to Lender
          determine,  as applicable,  the cash value or replacement  cost of the
          Collateral.

          Financing  Statements.  Grantor  authorizes  Lender  to  file a  UCC-1
          financing  statement,  or  alternatively,  a copy of this Agreement to
          perfect  Lender's  security  interest.  At Lender's  request,  Grantor
          additionally  agrees to sign all other documents that are necessary to
          perfect,  protect,  and  continue  Lender's  security  interest in the
          Property.  Grantor will pay all filing fees,  title transfer fees, and
          other  fees and  costs  involved  unless  prohibited  by law or unless
          Lender  is  required  by law to  pay  such  fees  and  costs.  Grantor
          irrevocably  appoints  Lender to execute lien entry  forms,  financing
          statements and documents of title in Grantor's name and to execute all
          documents  necessary to transfer  title if there is a default.  Lender
          may file a copy of this Agreement as a financing statement. If Grantor
          changes  Grantor's  name or  address,  or the name or  address  of any
          person  granting a security  interest  under this  Agreement  changes,
          Grantor will promptly notify the Lender of such change.

GRANTOR'S RIGHT TO POSSESSION AND TO COLLECT ACCOUNTS.  Until default and except
as  otherwise  provided  below  with  respect  to  accounts,  Grantor  may  have
possession  of the  tangible  personal  property and  beneficial  use of all the
Collateral  and may use it in any  lawful  manner  not  inconsistent  with  this
Agreement or the Related Documents,  provided that Grantor's right to possession
and  beneficial use shall not apply to any  Collateral  where  possession of the
Collateral by Lender is required by law to perfect Lender's security interest in
such Collateral.  Until otherwise notified by Lender, Grantor may collect any of
the Collateral  consisting of accounts.  At any time and even though no Event of
Default  exists,  Lender may  exercise its rights to collect the accounts and to
notify account  debtors to make payments  directly to Lender for  application to
the  Indebtedness.  If  Lender  at any time has  possession  of any  Collateral,
whether  before  or after an Event of  Default,  Lender  shall be deemed to have
exercised  reasonable care in the custody and  preservation of the Collateral if
Lender takes such action for that purpose as Grantor shall request or as Lender,
in Lender's sole discretion, shall deem appropriate under the circumstances, but
failure to honor any  request  by Grantor  shall not of itself be deemed to be a
failure to exercise  reasonable  care.  Lender shall not be required to take any
steps necessary to preserve any rights in the Collateral  against prior parties,
nor to protect,  preserve or maintain any security  interest given to secure the
Indebtedness.

LENDER'S  EXPENDITURES.  If any action or  proceeding  is  commenced  that would
materially  affect  Lender's  interest in the  Collateral or if Grantor fails to
comply with any provision of this Agreement or any Related Documents,  including
but not limited to  Grantor's  failure to  discharge or pay when due any amounts
Grantor is  required to  discharge  or pay under this  Agreement  or any Related
Documents,  Lender on Grantor's  behalf may (but shall not be obligated to) take
any  action  that  Lender  deems  appropriate,  including  but  not  limited  to
discharging or paying all taxes,  liens,  security  interests,  encumbrances and
other  claims,  at any time  levied or placed on the  Collateral  and paying all
costs  for  insuring,  maintaining  and  preserving  the  Collateral.  All  such
expenditures  incurred  or paid by  Lender  for such  purposes  will  then  bear
interest at the rate charged under the Note or at the highest rate authorized by
law,  from the date  incurred  or paid by  Lender  to the date of  repayment  by
Grantor.  All such  expenses  will  become a part of the  Indebtedness  and,  at
Lender's option,  will (A) be payable on demand;  (B) be added to the balance of
the Note and be apportioned  among and be payable with any installment  payments
to become due during either (1) the term of any applicable  insurance policy; or
(2) the remaining term of the Note; or (C) be treated as a balloon payment which
will be due and payable at the Note's  maturity.  The Agreement also will secure
payment of these  amounts.  Such right shall be in addition to all other  rights
and remedies to which Lender may be entitled upon Default. If Lender is required
by law to give  Grantor  notice  before or after  Lender  makes an  expenditure,
Grantor  agrees that  notice sent by regular  mail at least five (5) days before
the expenditure is made or notice  delivered two (2) days before the expenditure
is made is  sufficient,  and that  notice  within  sixty  (60)  days  after  the
expenditure is made is reasonable.

DEFAULT.  Each of the following shall constitute an Event of Default under this
          Agreement:

          Payment Default.  Grantor fails to make any payment when due under the
          Indebtedness.

          Other  Defaults.  Grantor fails to comply with or to perform any other
          term, obligation, covenant or condition contained in this Agreement or
          in any of the  Related  Documents  or to comply with or to perform any
          term,  obligation,  covenant  or  condition  contained  in  any  other
          agreement between Lender and Grantor.

          Default in Favor of Third  Parties.  Should  Borrower  or any  Grantor
          default  under any loan,  extension  of  credit,  security  agreement,
          purchase or sales agreement,  or any other agreement,  in favor of any
          other creditor or person that may  materially  affect any of Grantor's
          property  or  Grantor's  or  any   Grantor's   ability  to  repay  the
          Indebtedness  or  perform  their  respective  obligations  under  this
          Agreement or any of the Related Documents.

          False  Statements.  Any warranty,  representation or statement made or
          furnished  to Lender by  Grantor  or on  Grantor's  behalf  under this
          Agreement  or the  Related  Documents  is false or  misleading  in any
          material  respect,  either  now or at the time  made or  furnished  or
          becomes false or misleading at any time thereafter.

          Defective  Collateralization.  This  Agreement  or any of the  Related
          Documents ceases to be in full force and effect (including  failure of
          any  collateral  document  to  create a valid and  perfected  security
          interest or lien) at any time and for any reason.

          Insolvency. The dissolution or termination of Grantor's existence as a
          going  business,  the  insolvency  of Grantor,  the  appointment  of a
          receiver for any part of Grantor's  property,  any  assignment for the
          benefit  of  creditors,   any  type  of  creditor   workout,   or  the
          commencement of any proceeding under any bankruptcy or insolvency laws
          by or against Grantor.

          Creditor or Forfeiture  Proceedings.  Commencement  of  foreclosure or
          forfeiture  proceedings,  whether by judicial  proceeding,  self-help,
          repossession or any other method, by any creditor of Grantor or by any
          governmental  agency against any collateral securing the Indebtedness.
          This includes a garnishment  of any of Grantor's  accounts,  including
          deposit accounts,  with Lender.  However,  this Event of Default shall
          not  apply if there  is a good  faith  dispute  by  Grantor  as to the
          validity  or  reasonableness  of the  claim  which is the basis of the
          creditor or, forfeiture proceeding and if Grantor gives Lender written
          notice of the creditor or  forfeiture  proceeding  and  deposits  with
          Lender  monies  or a  surety  bond  for  the  creditor  or  forfeiture
          proceeding, in an amount determined by Lender, in its sole discretion,
          as being an adequate reserve or bond for the dispute.

          Events  Affecting  Guarantor.  Any of the preceding events occurs with
          respect to guarantor,  endorser, surety, or accommodation party of any
          of the Indebtedness or guarantor,  endorser,  surety, or accommodation
          party dies or becomes  incompetent or revokes or disputes the validity
          of, or liability under, any Guaranty of the Indebtedness.

          Adverse  Change.   A  material  adverse  change  occurs  in  Grantor's
          financial  condition,  or Lender  believes  the prospect of payment or
          performance of the Indebtedness is impaired.

          Cure  Provisions.  If any default,  other than a default in payment is
          curable  and if Grantor has not been given a notice of a breach of the
          same  provision of this  Agreement  within the  preceding  twelve (12)
          months,  it may be cured (and no event of default will have  occurred)
          if Grantor,  after receiving written notice from Lender demanding cure
          of such default: (1) cures the default within ten (10) days; or (2) if
          the cure requires more than ten (10) days, immediately initiates steps
          which Lender deems in Lender's  sole  discretion  to be  sufficient to
          cure the default and thereafter continues and completes all reasonable
          and  necessary  steps  sufficient  to  produce  compliance  as soon as
          reasonably practical.

RIGHTS  AND  REMEDIES  ON  DEFAULT.  If an Event of  Default  occurs  under this
Agreement,  at any time  thereafter,  Lender  shall  have all the  rights,  of a
secured  party under the Oklahoma  Uniform  Commercial  Code.  In addition,  and
without limitation,  Lender may exercise any one or more of the following rights
and remedies:

          Accelerate  Indebtedness.  Lender may declare the entire Indebtedness,
          including  any  prepayment  penalty which Grantor would be required to
          pay,  immediately  due and  payable,  without  notice  of any  kind to
          Grantor.

          Assemble  Collateral.  Lender may require Grantor to deliver to Lender
          all or any portion of the Collateral and any and all  certificates  of
          title and other  documents  relating  to the  Collateral.  Lender  may
          require  Grantor to assemble the  Collateral  and make it available to
          Lender at a place to be designated  by Lender.  Lender also shall have
          full power to enter upon the property of Grantor to take possession of
          and remove the Collateral.  If the Collateral contains other goods not
          covered by this Agreement at the time of repossession,  Grantor agrees
          Lender  may  take  such  other  goods,   provided  that  Lender  makes
          reasonable efforts to return them to Grantor after repossession.

          Sell the  Collateral.  Lender  shall have full  power to sell,  lease,
          transfer,   or  otherwise  dispose  of  the  Collateral.   Unless  the
          Collateral  in whole or in part is  perishable or threatens to decline
          speedily  in value or is of a type  customarily  sold on a  recognized
          market,  Lender will give  Grantor,  and other  persons as required by
          law, reasonable notice of the time and place of any public sale, or of
          the time after which any private  sale or other  disposition  is to be
          made.  Notwithstanding  any other  provision  of this  Agreement,  any
          requirement  of  notice  for this  purpose  shall be met if  notice is
          provided at least ten (10) days before  sale or other  disposition  or
          action.  Lender shall be entitled to, and Grantor shall be liable for,
          all  reasonable  costs  and  expenditures  incurred  in  realizing  on
          Lender's security interest,  including without  limitation,  all court
          costs, fees for sale, selling costs and reasonable  attorneys' fees as
          set forth in the Note or in this  Agreement.  All such costs  shall be
          secured by the  security  interest in the  Collateral  covered by this
          Agreement.

          Appoint Receiver.  In any action by Lender for the foreclosure of this
          Agreement,  whether by judicial  foreclosure or power of sale,  Lender
          shall be entitled to the appointment of a receiver upon any failure of
          Grantor to comply with any term,  obligation,  covenant,  or condition
          contained in this Agreement, the Note, or any Related Documents.

          Collect Revenues,  Apply Accounts.  Lender, either itself or through a
          receiver,  may collect the payments,  rents, income, and revenues from
          the Collateral. Lender may at any time in Lender's discretion transfer
          any Collateral into Lender's own name or that of Lender's  nominee and
          receive the payments,  rents,  income, and revenues therefrom and hold
          the same as security  for the  Indebtedness  or apply it to payment of
          the  Indebtedness in such order of preference as Lender may determine.
          Insofar as the Collateral consists of accounts,  general  intangibles,
          insurance policies,  instruments,  chattel paper, choses inaction,  or
          similar  property,  Lender may demand,  collect,  receipt for, settle,
          compromise,  adjust, sue for, foreclose,  or realize on the Collateral
          as Lender may determine,  whether or not Indebtedness or Collateral is
          then due. For these purposes, Lender may, on behalf of and in the name
          of Grantor,  receive,  open and dispose of mail  addressed to Grantor;
          change  any  address to which mail and  payments  are to be sent;  and
          endorse  notes,  checks,  drafts,  money  orders,  documents of title,
          instruments and items pertaining to payment,  shipment,  or storage of
          any Collateral.  To facilitate  collection,  Lender may notify account
          debtors and obligors on any  Collateral to make  payments  directly to
          Lender.

          Obtain  Deficiency.  If  Lender  chooses  to  sell  any  or all of the
          Collateral,  Lender  may  obtain a judgment  against  Grantor  for any
          deficiency   remaining  on  the   Indebtedness  due  to  Lender  after
          application  of all amounts  received  from the exercise of the rights
          provided in this  Agreement.  Grantor shall be liable for a deficiency
          even if the  transaction  described  in this  subsection  is a sale of
          accounts or chattel paper.

          Other  Rights  and  Remedies.  Lender  shall  have all the  rights and
          remedies of a secured  creditor  under the  provisions  of the Uniform
          Commercial  Code,  as may be amended  from time to time.  In addition,
          Lender  shall  have  and may  exercise  any or all  other  rights  and
          remedies it may have available at law, in equity, or otherwise.

          Election of Remedies. Except as may be prohibited by applicable law,
        all of Lender's rights and remedies, whether evidenced by this
        Agreement, the Related Documents, or by any other writing, shall be
        cumulative and may be exercised singularly or concurrently. Election by
        Lender to pursue any remedy shall not exclude pursuit of any other
        remedy, and an election to make expenditures or to take action to
        perform an obligation of Grantor under this Agreement, after Grantor's
        failure to perform, shall not affect Lender's right to declare a
        default and exercise its remedies.

MISCELLANEOUS  PROVISIONS.  The following miscellaneous provisions are a part of
this Agreement:

          Amendments.  This  Agreement,  together  with any  Related  Documents,
          constitutes the entire  understanding  and agreement of the parties as
          to  the   matters  set  forth  in  this   Agreement.   All  prior  and
          contemporaneous   representations  and  discussions   concerning  such
          matters  either are included in this document or do not  constitute an
          aspect of the agreement of the parties.  Except as may be specifically
          set forth in this Agreement, no conditions precedent or subsequent, of
          any kind whatsoever, exist with respect to Grantor's obligations under
          this Agreement.  No alteration of or amendment to this Agreement shall
          be  effective  unless  given in  writing  and  signed  by the party or
          parties sought to be charged or bound by the alteration or amendment.

          Attorneys'  Fees;  Expenses.  Grantor agrees to pay upon demand all of
          Lender's costs and expenses,  including  Lender's  attorneys' fees and
          Lender's legal  expenses,  incurred in connection with the enforcement
          of this Agreement. Lender may hire or pay someone else to help enforce
          this  Agreement,  and Grantor shall pay the costs and expenses of such
          enforcement.  Costs and expenses include Lender's  attorneys' fees and
          legal expenses whether or not there is a lawsuit, including attorneys'
          fees and legal expenses for bankruptcy  proceedings (including efforts
          to modify or vacate any automatic stay or  injunction),  appeals,  and
          any anticipated post-judgment collection services.  Grantor also shall
          pay all court costs and such additional fees as may be directed by the
          court.

          Caption   Headings.   Caption  headings  in  this  Agreement  are  for
          convenience  purposes  only  and are not to be  used to  interpret  or
          define the provisions of this Agreement.

          Governing  Law.  This  Agreement  will be governed by,  construed  and
          enforced in  accordance  with federal law and the laws of the State of
          Oklahoma.  This  Agreement has been accepted by Lender in the State of
          Oklahoma.

          Joint and Several  Liability.  All  obligations  of Grantor under this
          Agreement  shall be joint and several,  and all  references to Grantor
          shall  mean each and  every  Grantor.  This  means  that each  Grantor
          signing below is responsible  for all  obligations in this  Agreement.
          Where any one or more of the  parties is a  corporation,  partnership,
          limited  liability  company or similar entity, it is not necessary for
          Lender to inquire into the powers of any of the  officers,  directors,
          partners,  members, or other agents acting or purporting to act on the
          entity's behalf,  and any obligations made or created in reliance upon
          the professed  exercise of such powers shall be guaranteed  under this
          Agreement.

          No Waiver by  Lender.  Lender  shall not be deemed to have  waived any
          rights under this Agreement unless such waiver is given in writing and
          signed  by  Lender.  No delay or  omission  on the part of  Lender  in
          exercising  any right  shall  operate as a waiver of such right or any
          other right. A waiver by Lender of a provision of this Agreement shall
          not  prejudice or constitute a waiver of Lender's  right  otherwise to
          demand strict compliance with that provision or any other provision of
          this Agreement.  No prior waiver by Lender,  nor any course of dealing
          between  Lender  and  Grantor,  shall  constitute  a waiver  of any of
          Lender's  rights or of any of Grantor's  obligations  as to any future
          transactions.  Whenever  the consent of Lender is required  under this
          Agreement,  the  granting  of such  consent by Lender in any  instance
          shall not constitute  continuing consent to subsequent instances where
          such  consent is required and in all cases such consent may be granted
          or withheld in the sole discretion of Lender.

          Notices.  To the  extent  permitted  by  applicable  law,  any  notice
          required to be given under this  Agreement  shall be given in writing,
          and shall be effective when actually delivered, when actually received
          by telefacsimile  (unless  otherwise  required by law), when deposited
          with a nationally  recognized  overnight courier,  or, if mailed, when
          deposited  in the United  States mail,  as first  class,  certified or
          registered mail postage prepaid,  directed to the addresses shown near
          the beginning of this Agreement.  Any party may change its address for
          notices under this  Agreement by giving formal  written  notice to the
          other parties,  specifying that the purpose of the notice is to change
          the  party's  address.  For notice  purposes,  Grantor  agrees to keep
          Lender  informed at all times of  Grantor's  current  address.  To the
          extent permitted by applicable law, if there is more than one Grantor,
          any notice given by Lender to any Grantor is deemed to be notice given
          to all Grantors.

          Power  of  Attorney.  Grantor  hereby  appoints  Lender  as  Grantor's
          irrevocable   attorney-in-fact   for  the  purpose  of  executing  any
          documents  necessary  to perfect,  amend,  or to continue the security
          interest granted in this Agreement or to demand termination of filings
          of other secured parties.  Lender may at any time, and without further
          authorization  from  Grantor,  file a  carbon,  photographic  or other
          reproduction  of any financing  statement or of this Agreement for use
          as a  financing  statement.  Grantor  will  reimburse  Lender  for all
          expenses for the perfection and the  continuation of the perfection of
          Lender's security interest in the Collateral.

          Severability. If a court of competent jurisdiction finds any provision
          of this Agreement to be illegal,  invalid,  or unenforceable as to any
          person or  circumstance,  that  finding  shall not make the off ending
          provision illegal, invalid, or unenforceable as to any other person or
          circumstance. If feasible, the offending provision shall be considered
          modified  so that it  becomes  legal,  valid and  enforceable.  If the
          offending  provision  cannot be so modified,  it shall be  considered,
          deleted from this Agreement.  Unless  otherwise  required  bylaw,  the
          illegality,  invalidity,  or unenforceability of any provision of this
          Agreement shall not affect the legality, validity or enforceability of
          any other provision of this Agreement.

          Successors  and  Assigns.  Subject to any  limitations  stated in this
          Agreement on transfer of Grantor's  interest,  this Agreement shall be
          binding upon and inure to the benefit of the parties, their successors
          and assigns. If ownership of the Collateral becomes vested in a person
          other than Grantor,  Lender,  without notice to Grantor, may deal with
          Grantor's   successors  with  reference  to  this  Agreement  and  the
          Indebtedness  by way of  forbearance  or extension  without  releasing
          Grantor from the  obligations of this Agreement or liability under the
          Indebtedness.

          Survival  of  Representations  and  Warranties.  All  representations,
          warranties,  and agreements  made by Grantor in this  Agreement  shall
          survive  the  execution  and  delivery  of this  Agreement,  shall  be
          continuing in nature,  and shall remain in full force and effect until
          such time as Grantor's Indebtedness shall be paid in full.

          Time is of the Essence.  Time is of the essence in the  performance of
          this Agreement.

DEFINITIONS.  The following capitalized words and terms shall have the following
meanings  when  used  in  this  Agreement.  Unless  specifically  stated  to the
contrary, all references to dollar amounts shall mean amounts in lawful money of
the United States of America. Words and terms used in the singular shall include
the  plural,  and the plural  shall  include  the  singular,  as the context may
require.  Words and terms not otherwise defined in this Agreement shall have the
meanings attributed to such terms in the Uniform Commercial Code:

          Account. The word "Account" means a trade account, account receivable,
          other  receivable,  or other  right,  to payment  for goods  sold,  or
          services  rendered  owing  to  Grantor  (or to a third  party  grantor
          acceptable to Lender).

          Agreement.   The  word  "Agreement"  means  this  Commercial  Security
          Agreement,  as this  Commercial  Security  Agreement may be amended or
          modified  from time to time,  together with all exhibits and schedules
          attached to this Commercial Security Agreement from time to time.

          Borrower. The word "Borrower" means Flotek Industries,  Inc.; Chemical
          and Equipment  Specialties,  Inc.; Neal's Technology,  Inc.; Plainsman
          Technology,   Inc.;   PADKO   International   Incorporated;   Material
          Translogistics,  Inc.;  Esses,  Inc.;  Turbeco,  Inc.; USA Petrovalve,
          Inc.; Trinity Tool, Inc.; and Petrovalve,  Inc., and all other persons
          and entities signing the Note in whatever capacity.

          Collateral.  The word "Collateral" means all of Grantor's right, title
          and  interest  in  and to  all  the  Collateral  as  described  in the
          Collateral Description section of this Agreement.

          Default.  The word  "Default"  means  the  Default  set  forth in this
          Agreement in the section titled "Default".

          Environmental  Laws. The words  "Environmental  Laws" mean any and all
          state, federal and local statutes, regulations and ordinances relating
          to the  protection  of  human  health  or the  environment,  including
          without   limitation   the   Comprehensive   Environmental   Response,
          Compensation, and Liability Act of 1980, as amended, 42 U.S.C. Section
          9601; et seq. ("CERCLA"), the Superfund Amendments and Reauthorization
          Act of 1986,  Pub. L. No. 99-499  ("SARA"),  the  Hazardous  Materials
          Transportation  Act, 49 U.S.C.  Section  1801,  et seq.,  the Resource
          Conservation  and Recovery  Act; 42 U.S.C.  Section  6901, et seq., or
          other applicable state or federal laws, rules, or regulations  adopted
          pursuant thereto.

          Event of Default.  The words Event of Default"  mean any of the events
          of default set forth in this Agreement in the default  section of this
          Agreement.

          Grantor.  The word "Grantor" means Flotek Industries,  Inc.;  Chemical
          and Equipment  Specialties,  Inc.; Neal's Technology,  Inc.; Plainsman
          Technology,   Inc.;   PADKO   International   Incorporated;   Material
          Translogistics,  Inc.;  Esses,  Inc.;  Turbeco,  Inc.; USA Petrovalve,
          Inc.; Trinity Tool, Inc.; and Petrovalve, Inc.

          Guaranty.  The word  "Guaranty"  means the  guaranty  from  guarantor,
          endorser,  surety, or accommodation party to Lender, including without
          limitation a guaranty of all or part of the Note.

          Hazardous Substances.  The words "Hazardous Substances" mean materials
          that, because of their quantity,  concentration or physical,  chemical
          or  infectious  characteristics,  may  cause  or  pose  a  present  or
          potential  hazard to human health or the  environment  when improperly
          used,   treated,   stored,   disposed  of,  generated,   manufactured,
          transported or otherwise handled. The words "Hazardous Substances" are
          used in their very broadest sense and include  without  limitation any
          and all hazardous or toxic  substances,  materials or waste as defined
          by or  listed  under  the  Environmental  Laws.  The  term  "Hazardous
          Substances" also includes, without limitation, petroleum and petroleum
          by-products or any fraction thereof and asbestos.

          Indebtedness. The word "Indebtedness" means the indebtedness evidenced
          by the Note or Related Documents, including all principal and interest
          together with all other  indebtedness and costs and expenses for which
          Grantor  is  responsible  under  this  Agreement  or under  any of the
          Related Documents.

          Lender. The  word "Lender"  means  Legacy  Bank,  its  successors  and
          assigns.

          Note.  The word "Note" means the Note  executed by Flotek  Industries,
          Inc.;  Chemical and Equipment  Specialties,  Inc.; Neal's  Technology,
          Inc.; Plainsman  Technology,  Inc.; PADKO International  Incorporated;
          Material  Translogistics,   Inc.;  Esses,  Inc.;  Turbeco,  Inc.;  USA
          Petrovalve,  Inc.;  Trinity Tool,  Inc.;  and  Petrovalve,  Inc.in the
          principal  amount of $854,350.00  dated January 4,2002,  together with
          all renewals of,  extensions of,  modifications  of,  refinancings of,
          consolidations   of,  and,   substitutions  for  the  note  or  credit
          agreement.

          Property.  The word "Property" means all of Grantor's right, title and
          interest in and to all the Property as  described  in the  "Collateral
          Description" section of this Agreement.

          Related Documents.  The words "Related  Documents" mean all promissory
          notes, credit agreements,  loan agreements,  environmental agreements,
          guaranties,  security agreements,  mortgages, deeds of trust, security
          deeds, collateral mortgages, and all other instruments, agreements and
          documents,  whether now or hereafter existing,  executed in connection
          with the Indebtedness.






GRANTOR HAS READ AN UNDERSTOOD ALL THE PROVISIONS OF THIS COMMERCIAL SECURITY
AGREEMENT AND AGREES TO ITS TERMS. THIS AGREEMENT IS DATED JANUARY 4, 2002.

GRANTOR:

FLOTEK INDUSTRIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Flotek Industries, Inc.


By:/s/ Randall D. Keys
   -----------------------------------------------------
   Randall  D. Keys,  Chief  Financial Officer
   of Flotek, Industries, Inc.

By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny, President of Flotek Industries, Inc.


CHEMICAL AND EQUIPMENT SPECIALTIES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Chemical and Equipment
   Specialties, Inc.

By:s/ Randall D. Keys
   -----------------------------------------------------
   Randall D.Keys, Chief Financial Officer
   of Chemical and Equipment Specialties, Inc.

By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny, President of Chemical and Equipment
   Specialties, Inc.


NEAL'S TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Neal's Technology, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.Penny, President of Neal's Technology, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Neal's
   Technology, Inc.


PLAINSMAN TECHNOLOGY, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Plainsman Technology, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.Penny,Presiden of Plainsman Technology, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Plainsman Technology, Inc.


ESSES, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Esses, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.Penny, President of  Esses, Inc.



By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Esses, Inc.


PADKO INTERNATIONAL, INCORPORATED

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of PADKO International Incorporated


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S. Penny,  President of PADKO International Incorporated


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of PADKO
   International Incorporated


TURBECO, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Turbeco, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.   Penny,   President   of
   Turbeco, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Turbeco, Inc.


USA PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of USA Petrovalve, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.  Penny,  President  of USA
   Petrovalve, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of USA Petrovalve, Inc.


TRINITY TOOL, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Trinity Tool, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn  S.   Penny,   President   of
   Trinity Tool, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Trinity Tool, Inc.


MATERIAL TRANSLOGISTICS, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Material Translogistics, Inc.


By:/s/ Glenn S. Penny
   ----------------------------------------------------
   Glenn S.Penny, President of Material Translogistics, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Material
   Translogistics, Inc.


PETROVALVE, INC.

By:/s/ Jerry D. Dumas, Sr.
   -----------------------------------------------------
   Jerry D. Dumas, Sr., CEO of Petrovalve, Inc.


By:/s/ Glenn S. Penny
   -----------------------------------------------------
   Glenn S.Penny, President of Petrovalve, Inc.


By:/s/ Tom D. Morton
   -----------------------------------------------------
   Tom D. Morton, Vice President of Petrovalve, Inc.