EXHIBIT 10.4

                               EMPLOYMENT CONTRACT

     THIS AGREEMENT,  made between  INTEGRATED  PETROLEUM  SYSTEMS  CORPORATION,
whose mailing  address is 4590 South  Yosemite,  Building F-2,  Suite 219 of the
County of  Arapahoe,  State of Colorado  (herein  referred to as  "Employer"  or
"IPS") and  RICHARD D.  BARDEN of  Englewood,  Colorado,  herein  referred to as
"Employee":

                                    RECITALS

     IPS is engaged in the  business  of  developing  specialized  software  and
computer  systems  for  gathering,   processing  and  distributing   volumetric,
technical office at the aforesaid address.  Employee has been engaged in the oil
and gas business for more than  eighteen  years and has  developed and expertise
which will benefit Employer.  Employee is willing to be employed by IPS, and IPS
is  willing  to  employ  employee,  on  the  terms,  covenants,  and  conditions
hereinafter set forth.

                                   Article I:
                                   EMPLOYMENT

     Employer hereby employs,  engages, and hires employee as President to serve
as chief  executive  officer,  and  employee  hereby  accepts and agrees to such
hiring,  engagement  and  employment,  subject to the  general  supervision  and
pursuant to the orders,  resolutions  and  directives of the Board of Directors.
Employee shall perform such duties as are  customarily  performed by one holding
such position in other, same, or similar business or enterprises as that engaged
in by  employer,  and shall also  additionally  render such other and  unrelated
services  and duties as may be assigned to him from time to time by the Board of
Directors.

                                   Article II:
                            BEST EFFORTS OF EMPLOYEE

     Employee agrees that he will at all times faithfully, industriously, and to
the best of his ability, experience, and talents, perform all of the duties that
may be required of and from him  pursuant  to the  express  and  implicit  terms
hereof,  to the  reasonable  satisfaction  of  employer.  Such  duties  shall be
rendered at the aforesaid principal place of business and/or at such other place
or places as employer  shall in good faith  require or as the  interest,  needs,
business, or opportunity of employer shall require.

                                  Article III:
                               TERMS OF EMPLOYMENT

The term of this  agreement  shall be a period of six (6) years,  commencing  on
January 1, 1992, and  terminating  on December 31, 1997,  subject,  however,  to
prior  termination as hereinafter  provided.  At the expiration,  this agreement
shall be considered  renewed for regular periods of one year,  provided  neither
party submits a notice of termination.

                                       1



                                   Article IV:
                            COMPENSATION OF EMPLOYEE

     Employer shall pay employee,  and employee  shall accept from employer,  in
full payment for employee's services hereunder,  compensation which includes the
totality of benefits as defined in this article as follows:

     4.1 Beginning  January 1, 1992, at the rate of Sixty Five Thousand  Dollars
($65,000.00) per year, which shall be payable biweekly.  Said compensation shall
continue until such time as IPS has completed the Research and  Development  and
the Testing phases of its products,  or until September 1, 1992, whichever first
occurs.  Completion  of the  aforesaid  phases shall be construed  solely by the
Board of Directors;

     4.2 At such time as the term defined in paragraph  4.1 has been  fulfilled,
Employee's  compensation  shall be  raised to  Seventy  Eight  Thousand  Dollars
($78,000.00)  per year,  payable  biweekly as above.  Said salary shall continue
until  such  time  as  IPS  has  attained  the  total  of  One  Million  Dollars
($1,000,000.00)  in gross sales as  represented by the official books of account
of the Corporation;

     4.3 At such time as IPS has attained One Million Dollars ($1,000,000.00) in
gross  sales as defined  in  paragraph  4.2,  Employee's  compensation  shall be
increased to Ninety Six Thousand,  Two Hundred  Dollars  ($96,200.00)  per year,
which shall be payable biweekly as above;

     4.4 Thereafter the Board of Directors shall review employee's  compensation
annually  and  shall  increase,  but  not  decrease,   Employee's   compensation
commensurate  with the financial  ability of the company and in accordance  with
compensation  packages paid to chief  executive  officers of other  companies of
similar size and operation;

     4.5 In addition to the salary to be paid  pursuant to  paragraphs  4.1, 4.2
and 4.3, above the total  compensation  package referred to herein shall include
major medical insurance,  disability insurance,  vacation of four weeks per year
during the phases defined in paragraph 4.1 and 4.2, increasing to five weeks per
year beginning with the phase defined in paragraph 4.3 and thereafter;  also, no
less than eight (8) paid holidays annually and five (5) paid sick days annually.
Employee  shall be entitled (i) to accrue and carry  forward into any new annual
period up to two (2) weeks of vacation time and thirty (30) sick days which such
accrued  vacation and sick days shall be over and above for each calendar  year,
and (ii) to be paid for any and all unused  vacation time or sick days which are
not or may not be carried forward as described above.

     4.6 Employer shall reimburse  employee for all necessary  expenses incurred
by employee while traveling pursuant to employer's directions.

                                   Article V:
                 TERMINATION DUE TO DISCONTINUANCE OF BUSINESS

     Anything  herein  contained to the contrary  notwithstanding,  in the event
that  employer  shall  discontinue  its  business,  then  this  agreement  shall
terminate as of the last day of the month on which employer ceases operations at
such  location  with the same  force and effect as if such last day of the month
were originally set as the termination date hereof.

                                       2



                                   Article VI:
                              FULL TIME EMPLOYMENT

Employee shall devote substantially all of his time, attention,  knowledge,  and
skills to the business and interest of employer,  and employer shall be entitled
to all of the benefits,  profits or other issues arising from or incident to all
work, services and advice of employee.

                                  Article VII:
                                  TRADE SECRETS

     Employee  shall  not at any  time  or in any  manner,  either  directly  or
indirectly,  divulge, disclose or communicate to any person, form or corporation
in any manner  whatsoever any  information  concerning any matters  affecting or
relating to the business of employer,  including without limiting the generality
of the foregoing,  any of its  customers,  the prices it obtains or has obtained
from the sale of, or at which it sells or has sold,  its products,  or any other
information  concerning the business of employer,  its manner of operation,  its
plans,  processes, or other date without regards to whether all of the foregoing
matters will be deemed confidential,  material, or important, the parties hereto
stipulating  that as  between  them,  the  same  are  important,  material,  and
confidential  and gravely  affect the  effective and  successful  conduct of the
business of employer,  and employer's good will, and that any breach of terms of
this paragraph shall be a material breach of this agreement.

                                  Article VIII:
                               COMPLETE AGREEMENT

     This contract  contains the complete  agreement  concerning  the employment
arrangement  between the parties and shall,  as of the  effective  date  hereof,
supersede all other agreements  between the parties.  The parties stipulate that
neither of them has made any  representation  with respect to the subject matter
of this  agreement or any  representations  including the execution and delivery
hereof except such representations as are specifically set forth herein and each
of the parties hereto  acknowledge  that he or it has relied on its own judgment
in entering into this agreement. The parties hereto further acknowledge that any
payments or representations that may have heretofore been made by either of them
to the other are of no effect and that  neither  of them has  relied  thereon in
connection with his or its dealing with the other.

                                   Article IX:
                            MODIFICATION OF CONTRACT

     NO waiver or modification  of this agreement or of any covenant,  condition
or  limitation  herein  contained  shall be valid  unless  in  writing  and duly
executed both parties hereto and no evidence of any waiver or modification shall
be offered or  received  in  evidence  of any  waiver or  modification  shall be
offered or received in evidence of any  proceeding,  arbitration,  or litigation
between the parties hereto arising out of or affecting  this  agreement,  or the
rights  or  obligations  of  the  parties  hereunder,   unless  such  waiver  or
modification is in writing, duly executed as aforesaid,  and the parties further
agree that the provisions of this section may not be waived except as herein set
forth.

                                       3



                                   Article X:
                                  FIDELITY BOND

     Employee will  immediately  make application for a fidelity or surety bond,
to any company  designated  by  employer,  in such amount as may be specified by
employer.  Employer  shall pay the  premium  on such  bond,  and such bond shall
continue in force in such  amounts as employer may from time to time require and
in the event such bond is refused, or is ever canceled, except with the approval
of  employer,  employee may be  terminated  immediately  and  employee  shall be
entitled to compensation to the date of such termination only.

                                   Article XI:
                                   TERMINATION

     This  agreement  may not be  terminated  by either  party  except upon good
cause. If Employer shall so terminate this agreement, employee shall be entitled
to salary for nine (9)  months.  It is further  agreed that any breach of any of
the terms of this  contract by either party hereto will result in immediate  and
irreparable  injury to the other party and will authorize recourse to injunction
and/or specific  performance as well as to all other legal or equitable remedies
to which such injured party may be entitled hereunder.

                                  Article XII:
                           TERMINATION FOR DISABILITY

     12.1 Notwithstanding  anything in this agreement to the contrary,  employer
is hereby  given the  option  to  terminate  this  agreement  in the event  that
employee shall, during the term hereof, become permanently disabled, as the term
"permanently  disabled" is hereinafter fixed and defined.  Such options shall be
deemed  exercised by employer  giving  notice to employee via  registered  mail,
addressed  to him in care of employer at 4950 South  Yosemite,  F-2,  Suite 219,
Englewood,  Colorado 80111, or at such other address as employee shall designate
in writing, of employer's  intention to terminate this agreement on the last day
of the month during  which such notice is mailed.  On the giving of such notice,
this  agreement  shall cease on the last day of the month in which the notice is
so mailed,  with the same force and effect as if such last day of the month were
the date originally herein set forth as the termination date hereof.

     12.2 For the  purpose of this  agreement  employee  shall be deemed to have
become permanently disabled,  if, during any year of the term hereof, because of
ill health, physical or mental disability or for other causes beyond his control
he shall have been  continuously  unable or  unwilling  or shall have  failed to
perform his duties for a total  period  hereunder  for ninety  (90)  consecutive
days,  or if,  during any year of the term hereof,  he shall have been unable or
unwilling  or shall have failed to perform his duties for a total  period of one
hundred  twenty  (120)  days,  irrespective  of  whether  or not  such  days are
consecutive.  For the purposes  hereof the term "any year of the term hereof" is
defined  to mean any 12  calendar  months  period  commencing  on January 1, and
terminating on December 31, during the term of this agreement.

                                       4


                                  Article XIII:
                                  SEVERABILITY

     All agreements  and covenants  contained  herein are severable,  and in the
event any of them,  with the  exception  of those  contained in Sections One and
Four hereof,  shall be held to be invalid by any competent court,  this contract
shall  be  interpreted  as if such  invalid  agreements  or  covenants  were not
contained herein.

                                  Article XIV:
                                  CHOICE OF LAW

     It is the  intention  of the  parties  hereto that this  agreement  and the
performance  hereunder  and all  suits  and  special  proceedings  hereunder  be
construed in accordance  with and under and pursuant to the laws of the State of
Colorado and that in any action, special proceeding or other proceeding that may
be brought  arising out of, in connection  with, or by reason of this agreement,
the laws of the State of Colorado  shall be  applicable  and shall govern to the
exclusion of the law of any other forum,  without regard to the  jurisdiction in
which any action or special proceeding may be instituted.

     IN WITNESS  WHEREOF,  the parties have executed this  agreement on this 1st
day of November, 1991.

INTEGRATED PETROLEUM
SERVICES CORPORATION:

By:  /s/ Richard D. Barden, Director
         ---------------------------
         Richard D. Barden, Director

By:  /s/ Mark T. Shipley, Director
         -------------------------
         Mark T. Shipley, Director

By:  /s/ William S. Grigel, Director
         ---------------------------
         William S. Grigel, Director



EMPLOYEE:


         /s/ Richard D. Barden
             -----------------
             Richard D. Barden

                                       5



                           AMENDED EMPLOYMENT CONTRACT

     WHEREAS,  RICHARD D. BARDEN of Englewood,  Colorado  (hereafter referred to
him as "Employee")  entered into an Employment  Contract dated November 1, 1991,
for and with INTEGRATED PETROLEUM SYSTEMS CORPORATION,  whose mailing address is
4590 South Yosemite, Building F-2, Suite 219 of the County of Arapahoe, State of
Colorado (hereafter referred to as "Employer" or "IPS"); and

     WHEREAS,  it is the mutual  desire of these  Parties to modify the terms of
the said contract in order to insure Employee's continued service with IPS.

     NOW  THEREFORE,  the Parties  stipulate and agree that the said  Employment
Contract shall be and hereby is modified and amended as follows:

1. Article III

     The first sentence shall be modified to read as follows:

     "This agreement  shall apply for a period of nine (9) years,  commencing on
     January 1, 1992, and terminating on December 31, 2000, subject, however, to
     prior termination as hereinafter provided."

2. Article IV

  Section 4.2 shall be modified to read:

     "At such time as the term  defined  in  paragraph  4.1 has been  fulfilled,
     Employee's  compensation  shall be raised to Seventy Eight Thousand Dollars
     ($78,000.00)  per year,  payable  biweekly  as  above.  Said  salary  shall
     continue  until  such  time  as  IPS  has  attained  One  Million   Dollars
     ($1,000,000) in gross sales as represented by the official books of account
     of the Corporation, or until January 1, 1996, whichever occurs first;"

  Section 4.3 shall be modified to read:

     "As of January 1, 1996,  or at such time as IPS has  attained  One  Million
     Dollars  ($1,000,000)  in gross sales as defined in paragraph  4.2,  above,
     whichever  occurs  first,  Employee's  compensation  shall be  increased to
     Ninety Six Thousand, Two Hundred Dollars ($96,200.00) per year, which shall
     be payable biweekly as above;"

  Section 4.5 shall be modified to read:

     "In addition to the salary to be paid pursuant to  paragraphs  4.1, 4.2 and
     4.3, above, the total compensation package referred to herein shall include
     an annual bonus, major medical insurance, disability insurance, vacation of
     four weeks per year  during the phases  defined in  paragraph  4.1 and 4.2,
     increasing  to five  weeks per year  beginning  with the phase  defined  in
     paragraph 4.3 and thereafter,. . ."

     EXCEPT as indicated  above,  all of the other terms of the said  Employment
Contract shall remain the same and unchanged.

                                   



     IN WITNESS  WHEREOF,  the parties have ratified and executed this agreement
on this 4th day of October, 1994.


INTEGRATED PETROLEUM
SYSTEMS CORPORATION:


By:  /s/ Richard D. Barden, Director
         ---------------------------
         Richard D. Barden, Director

By:  /s/ Mark T. Shipley, Director
         -------------------------
         Mark T. Shipley, Director


EMPLOYEE:

By:  /s/ Richard D. Barden, Director
         ---------------------------
         Richard D. Barden, Director

                                       2