SEITEL INC
10-K, 2000-03-30
OIL & GAS FIELD EXPLORATION SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM 10-K

                        FOR ANNUAL AND TRANSITION REPORTS
                     PURSUANT TO SECTIONS 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

- -------
  X       ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR 15(d)  OF THE  SECURITIES
- -------   EXCHANGE ACT OF 1934

          For the fiscal year ended December 31, 1999

                 OR

- -------
          TRANSITION  REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES
- -------   EXCHANGE ACT OF 1934

                         Commission File Number 0-14488
                                     -------

                                  SEITEL, INC.
               (Exact name of registrant as specified in charter)

         Delaware                                         76-0025431
         --------                                         ----------
(State or other jurisdiction of                          (IRS Employer
incorporation or organization)                      Identification Number)

    50 Briar Hollow Lane
  West Building, 7th Floor
      Houston, Texas                                          77027
      --------------                                          -----
   (Address of principal                                    (Zip Code)
    executive offices)

Registrant's telephone number, including area code:      (713) 881-8900
                                                         --------------

Securities registered pursuant to Section 12(b) of the Act:

     Title of Each Class               Name of Each Exchange on Which Registered
     -------------------               -----------------------------------------
Common Stock, par value $0.01                       New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:
          None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                                 ----                    ----
                            Yes   X             No
                                 ----                    ----

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. X

The  aggregate  market value of the voting stock held by  non-affiliates  of the
registrant at March 27, 2000 was approximately $177,941,709. For these purposes,
the term "affiliate" is deemed to mean officers and directors of the registrant.
On such  date,  the  closing  price of the  Common  Stock on the New York  Stock
Exchange was $8.125 and there were a total of 23,640,613  shares of Common Stock
outstanding.

Documents Incorporated by Reference:

  Document                                                     Part
  ---------------------------------                          ---------
  Definitive Proxy Statement for                               III
  2000 Annual Stockholders Meeting


<PAGE>


ITEM 1.  BUSINESS
         --------

General

     Seitel,  Inc.  (the  "Company")  is a leading  provider of seismic data and
related  geophysical  services and  expertise  to the  petroleum  industry.  The
Company  licenses  its  proprietary  seismic data to oil and gas  companies  and
participates in petroleum  exploration and development  projects.  See Note P to
the  Company's  Consolidated  Financial  Statements  for  financial  information
relating to industry segments.

Seismic Operations

     Since its  inception  in 1982,  the  Company has  developed  a  proprietary
library of seismic data by  contracting  with crew companies to acquire data and
by buying existing data libraries from other  companies.  The Company's  seismic
data library is primarily owned and marketed by Seitel Data, Ltd., a partnership
wholly-owned by the Company through subsidiaries,  and Olympic Seismic,  Ltd., a
wholly-owned  Canadian  subsidiary.  The data  library,  which  consists of both
two-dimensional  ("2D") and three-dimensional  ("3D") data, is marketed to major
and independent oil and gas companies under license agreements.  Seismic surveys
and the  analysis  of seismic  data for the  identification  and  definition  of
underground  geological  structures are principal techniques used in oil and gas
exploration   and  development  to  determine  the  existence  and  location  of
subsurface hydrocarbons.

     At December 31, 1999,  the Company  owned  approximately  1,150,000  linear
miles of 2D and  approximately  16,300  square miles of 3D seismic data which it
maintained in its library and the Company marketed an additional  270,000 linear
miles of 2D data owned by others. The Company's seismic data library constitutes
the largest seismic database  marketed publicly in North America based solely on
management's  knowledge and beliefs  regarding the industry.  The Company's U.S.
seismic  surveys  extend to  virtually  every  major  domestic  exploration  and
development  region,  with the majority of the seismic surveys  covering onshore
and  offshore the U.S.  Gulf Coast.  In addition,  the  Company's  international
seismic surveys are  concentrated  in Western Canada and the  Continental  Shelf
offshore the United Kingdom and Ireland.

     The Company's  marketing team of 20 seismic sales specialists  markets data
from its  library  and from  newly  initiated  seismic  surveys.  The  Company's
marketing  philosophy is that seismic data,  like most other  products,  must be
sold  aggressively as opposed to waiting passively for customer  purchases.  The
marketing team monitors energy industry  exploration and development  activities
through  close  interaction  with  oil and gas  companies  on a daily  basis  to
maximize seismic sales opportunities.

     The Company has a 14 member staff of geoscientists dedicated to its seismic
operations,   who  have  in  excess  of  270  years  of  collective  geophysical
experience. Together, the marketing team and geoscientists help clients evaluate
their  respective  seismic  requirements,  design  seismic data programs to meet
market demand,  and supervise the reprocessing of data in the Company's  library
to enhance future resales.

     Three-dimensional  seismic data provides a graphic geophysical depiction of
the  earth's  subsurface  from  two  horizontal   dimensions  and  one  vertical
dimension,  rendering a more  detailed  picture than 2D data,  which  presents a
cross-sectional  view from one vertical and one horizontal  dimension.  The more
comprehensive  geophysical  information  provided  by 3D  surveys  significantly
enhances an  interpreter's  ability to evaluate the probability of the existence
and  location  of oil  and  gas  deposits.  The  proper  use of 3D  surveys  can
significantly   increase   drilling   success   rates   and,    correspondingly,
significantly lower exploration and development finding costs. However, the cost
to  create  3D  seismic  data is  significantly  more than the cost to create 2D
seismic  data,  particularly  for onshore  data.  As a result,  2D data  remains
economically more efficient for preliminary,  broad-scale exploration evaluation
and to determine the location for 3D surveys.  Also, the best way to design a 3D
survey is from 2D data grids of the respective  area. The 3D surveys can then be
used for more site-specific analysis to maximize actual drilling potential.

     The Company creates new seismic data for its library  through  multi-client
surveys.  Prior to undertaking a seismic survey,  the Company  pre-licenses  the
data to several oil and gas companies.  The license fee  commitments  from these
customers  cover  the  majority  of the  costs  of  the  survey.  The  Company's
investment in the survey is limited to the excess of the cost of the survey over
the customer  license fee  commitments.  The customers share in the expense of a
survey,  which  reduces  their cost of the survey while the Company  reduces its
initial capital investment in the survey. In a multi-client  survey, the Company
retains ownership of the newly created data, which is added to its data library.
The Company then markets  licenses to use the data to other  customers.  Seismic


<PAGE>

data cannot be transferred by a licensee to another party;  each individual user
must purchase a license.  The Company  contracts with seismic  acquisition  crew
companies to conduct both onshore and offshore seismic surveys.

     The Company has developed  fully-integrated  3D technology and  operations,
which extend from its expansive 2D seismic library from which to best design the
parameters for 3D surveys,  its large and growing 3D data library,  a processing
center and proprietary  computer  technology coupled with extensive  geophysical
application expertise to effectively interpret 3D data.

Oil and Gas Exploration and Production Operations

     In addition to licensing  its seismic data to  customers,  the Company also
utilizes its seismic expertise to participate  directly in oil and gas projects.
The Company  participates in these projects as a working interest owner, sharing
costs and revenues of oil and gas exploration and production projects with other
oil and gas  companies.  The  Company's  strategy  is to  combine  its 3D and 2D
seismic  expertise  and  related  geophysical  expertise  with  the  geological,
engineering  and drilling  expertise and land positions of oil and gas companies
in  exploration  and  development  programs.  The  Company  believes  that  this
combination will result in higher drilling  success rates,  thereby allowing the
Company  to  participate  in  oil  and  gas  exploration  and  development  on a
relatively  low cost and low risk  basis,  and to build an asset base of oil and
gas reserves which complement its seismic data library.

     Since its formation in 1993,  the Company's  wholly-owned  exploration  and
production  subsidiary,  DDD Energy,  Inc. ("DDD Energy"),  has entered into and
maintained cost and revenue-sharing relationships with more than 100 oil and gas
companies  and,  in doing so,  has  received  the  benefit  of these oil and gas
companies' land,  geological,  engineering and drilling  staffs.  DDD Energy has
conducted over 2,000 square miles of advanced 3D surveys,  located  primarily in
the Gulf Coast areas of onshore Texas,  Louisiana,  Alabama and Mississippi,  as
well as California and Arkansas. DDD Energy's working interest in these projects
ranges  from  approximately  10% to 90%,  with an average  working  interest  of
approximately  31%. More than 160 square miles of 3D surveys are scheduled to be
conducted  in 2000 by DDD  Energy and its  partners.  The  majority  of the well
locations  pinpointed  by the  surveys  that have  already  been  completed  and
interpreted   should  be  drilled  during  the  next  three  years.  DDD  Energy
exclusively utilizes the Company's processing and interpretation  technology and
operations  to provide  optimum  quality  control  and  confidentiality  for the
exploration and production programs in which DDD Energy participates.

     From March 1993 through  December 31, 1999, DDD Energy has  participated in
the drilling of 300 wells, 205 of which were  commercially  productive for a 68%
success rate.

     In November 1999, the Company's 19% owned subsidiary,  Vision Energy,  Inc.
("Vision  Energy"),  filed a  registration  statement  with the  Securities  and
Exchange  Commission ("SEC") to accomplish the spin-off of DDD Energy through an
initial public offering.  In the proposed offering,  Vision Energy would acquire
all of the stock of DDD Energy from the Company in exchange  for the issuance of
shares of Vision Energy stock to the Company, and the Company would sell most of
these Vision  Energy shares in the public  offering for cash.  Completion of the
offering  is  expected  to occur  during  the  second or third  quarter of 2000;
however,  its completion is dependent upon market  conditions and other factors.
The Company  continues  to explore  opportunities  to maximize  the value of DDD
Energy.

Customers

     The Company  markets its seismic data to major and  independent oil and gas
companies.  The Company  generally  sells its oil and gas to numerous  customers
through the operators of its oil and gas properties.  No one customer  accounted
for as much as 10% of the  Company's  revenues  during the years  1999,  1998 or
1997.  As a result,  the Company  does not believe that the loss of any customer
would have a material adverse impact on its seismic or oil and gas business.

Competition

     The  creation and resale of seismic  data are highly  competitive  in North
America. There are a number of independent oil-service companies that create and
market data, and numerous oil and gas companies create seismic data and maintain
their own seismic  data  banks.  However,  as a result of the energy  industry's
collapse in 1985 and major  industry  consolidation  in the 1990's,  significant
seismic  competitors  to the Company  have been reduced  from  approximately  15
companies in 1985 to less than 10 today. The Company's largest competitors, most
of whom are engaged in  acquiring  seismic data as well as a data  library,  are

<PAGE>

Baker Hughes, Petroleum Geo-Services,  Schlumberger,  TGS Nopec, Veritas DGC and
Compagnie  Generale de  Geophysique.  In  addition,  the Company has  positioned
itself to take advantage of the increased  outsourcing  trend by exploration and
production  companies for their seismic data services.  The Company  believes it
can compete favorably because of the expansiveness of its data library base, the
expertise of its marketing  staff and the technical  proficiency and exploration
experience of its  geoscientists.  These resources enable the Company to provide
high-quality service and to create and market high-grade data.

     In the oil and gas exploration and production business,  there are numerous
oil and gas companies competing for the acquisition of mineral  properties.  The
Company  believes it can  participate  effectively  in the  exploration  for and
development   of   natural   gas  and  crude  oil   reserves   because   of  its
fully-integrated  seismic resources and geophysical  expertise combined with the
geological  and  engineering  experience and land positions of the Company's oil
and gas company partners.

Seasonality and Timing Factors

     The Company's  results of operations can fluctuate from quarter to quarter.
The fluctuations are caused by a number of factors.

     With respect to the  Company's  seismic  licensing  revenue,  the Company's
results are influenced by oil and gas industry capital  expenditure  budgets and
spending  patterns.  These budgets are not necessarily  spent in either equal or
progressive  increments  during the year,  with  spending  patterns  affected by
individual oil and gas company requirements as well as industry-wide conditions.
As a result, the Company's seismic data revenue does not necessarily flow evenly
or progressively  on a sequential  quarterly basis during the year. In addition,
certain  weather-related  events may delay the  creation of seismic data for the
Company's  library  during  any given  quarter.  Although  the  majority  of the
Company's  seismic  resales are under  $500,000 per sale,  occasionally a single
data  resale from the  Company's  library can be as large as $5 million or more.
Such large  resales  can  materially  impact the  Company's  results  during the
quarter in which they occur,  creating an  impression  of a trend of  increasing
revenue that may not be achieved in subsequent periods.

     With respect to revenue from the Company's oil and gas operations, bringing
a  small  number  of  high-production  wells  on line  in a  given  quarter  can
materially  impact the results of that quarter  since many of the wells in which
the Company participates  experience high initial flow rates for the first 60 to
90 days of  production  and  then  taper  off to a  lower,  steady  rate for the
remainder  of their  lives.  If several of these  wells are brought on line in a
quarter,  the results for that quarter will appear  unusually  strong,  and then
later,  when production  decreases to its long-term,  steady rate, the Company's
results may not be able to sustain the trend of increased  performance indicated
by the  strong  results  of the  previous  quarter.  The  Company's  oil and gas
exploration   and  production   operations  also  can  be  impacted  by  certain
weather-related  events  as well as by  mechanical  and  equipment  problems  or
shortages  and  other  factors,  which may  delay  the  hookup  of  successfully
completed  wells and delay the resultant  production  revenue.  Also, due to the
high  percentage  of gas reserves in the  Company's  portfolio  and the seasonal
variations in gas prices,  the Company's results from its oil and gas operations
also are subject to  significant  fluctuations  due to  variations  in commodity
prices.  In  addition,  some  producing  wells  may be  required  to go off line
periodically  for pipeline and other  maintenance.  The Company does not believe
that these  fluctuations  in quarterly  results are  indicative of the Company's
long-term prospects and financial performance.

     See  Note  Q  to  the  Company's   Consolidated  Financial  Statements  and
Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations.

Employees

     As of December 31, 1999, the Company and its subsidiaries had 120 full-time
employees and two employees who devote part of their time to the Company who are
also officers of other corporations. None of the Company's employees are covered
by collective bargaining agreements.  Of these employees,  82 are related to the
seismic operations and 20 are related to the oil and gas operations. The balance
provides accounting and administrative  support for all operations.  The Company
has employment contracts with five of its senior corporate executives.

Risk Factors

     Any investment in our securities involves risk.  Investors should carefully
consider,  in addition to the other  information  contained in this report,  the
risks described below before making any investment decision.

<PAGE>

     OUR BUSINESS COULD BE ADVERSELY  AFFECTED BY LOW  EXPLORATION,  DEVELOPMENT
AND PRODUCTION SPENDING BY OIL AND GAS COMPANIES AND BY LOW OIL AND GAS PRICES.

     Our seismic business depends upon  exploration,  development and production
spending by oil and gas companies.  Although  overall  conditions in the oil and
gas industry have improved recently as a result of strong oil prices,  the level
of  capital  expenditures  by oil and gas  companies  has not  been as  quick to
recover. This could affect our seismic data operations. Any decreases in oil and
gas prices could result in decreased  exploration,  development  and  production
spending by oil and gas companies, which could affect our seismic data business.
Although oil and gas prices have  increased  recently,  any future decline could
result in decreased  revenues from our oil and gas  exploration  and  production
business.

     WE INVEST SIGNIFICANT  AMOUNTS OF MONEY IN ACQUIRING AND PROCESSING SEISMIC
DATA FOR OUR  DATA  LIBRARY  WITH  ONLY  PARTIAL  UNDERWRITING  OF THE  COSTS BY
CUSTOMERS.

     We invest  significant  amounts of money in acquiring  and  processing  new
seismic data to add to our data library.  Although we generally  obtain customer
commitments  covering in excess of 60% of the costs of acquiring and  processing
this  data,  we assume  the risk that we will not be able to fully  recover  our
portion of the costs through future  licensing of the data. The amounts of these
future data  licensing  fees are  uncertain  and depend on a variety of factors,
including the market prices of oil and gas,  customer demand for seismic data in
our library,  availability  of similar data from  competitors  and  governmental
regulations affecting oil and gas exploration.  Many of these factors are beyond
our control. In addition, the timing of these sales can vary greatly from period
to period.  Technological  or  regulatory  changes or other  developments  could
adversely affect the value of the data.

     BECAUSE OUR BUSINESS IS CONCENTRATED IN THE U.S. GULF COAST AND CANADA,  IT
COULD BE ADVERSELY  AFFECTED BY  DEVELOPMENTS  IN THE OIL AND GAS BUSINESS  THAT
AFFECT THESE AREAS.

     Most of the seismic data in our seismic data library covers areas along the
U.S. Gulf Coast, offshore in the U.S. Gulf of Mexico or in Canada. Also, most of
our existing  interests in oil and gas properties are located along the coast of
the U.S. Gulf of Mexico. Because of this geographic  concentration,  our results
of operations  could be adversely  affected by events relating  primarily to one
these  regions even if  conditions  in the oil and gas industry  worldwide  were
favorable. Some examples of possible events that would adversely affect the U.S.
Gulf  Coast  region  would be  changes  in  governmental  regulations  adversely
affecting offshore drilling in the U.S. Gulf of Mexico, shortages of drilling or
other  necessary  equipment in this region,  or increases in gas  transportation
costs from this region to the Northeastern  U.S., where much of the gas produced
in this region is consumed.

     THE AMOUNTS WE AMORTIZE  FROM OUR DATA LIBRARY  EACH PERIOD MAY  FLUCTUATE,
AND THESE FLUCTUATIONS CAN AFFECT OUR REPORTED RESULTS OF OPERATIONS.

     We amortize the cost of our multi-client  data library based in part on our
estimates of future sales of data.  These  estimates  are imprecise and may vary
from period to period depending upon market  developments and our  expectations.
Substantial  changes in amortization  rates can have a significant effect on our
reported results of operations.

     DRILLING HAZARDS AND DRY HOLES COULD AFFECT OUR OIL AND GAS ACTIVITIES.

     We  may  not  discover  commercial  quantities  of  oil  and  gas  when  we
participate in drilling  wells.  Our oil and gas  operations  could be adversely
affected by the occurrence of drilling hazards. These include:

     o    cratering;
     o    explosions;
     o    uncontrollable flows of oil, gas or well fluids;
     o    fires;
     o    pollution; and
     o    other environmental risks.

     Some of these hazards can cause  personal  injury and loss of life,  severe
damage to and  destruction of property and equipment,  environmental  damage and
suspension of operations.  We do not act as operator in our oil and gas drilling
business and depend on our partners to minimize these operating risks.
<PAGE>

     WE HAVE RECORDED  WRITE-DOWNS  BECAUSE OF LOW OIL AND GAS PRICES AND MAY BE
REQUIRED  TO DO SO AGAIN IN THE FUTURE.  FUTURE  WRITE-DOWNS  WOULD  RESULT IN A
CHARGE TO OUR EARNINGS AND POSSIBLE LOSSES.

     Under  SEC oil and gas  accounting  rules,  we may have to  write-down  our
assets if oil and gas prices  decline  significantly  or if we have  significant
downward  adjustments  to our oil and gas  reserves.  We recorded a $9.6 million
pre-tax,  $6.2 million after tax,  non-cash  write-down of the carrying value of
our proved oil and gas properties as of December 31, 1997 due to low oil and gas
prices.  If oil and gas prices  fall  significantly,  or if we have  significant
downward  reserve  adjustments  in the future,  it is possible  that  additional
write-downs will occur again.  These write-downs would result in a charge to our
earnings and  possible  losses,  but would not impact cash flows from  operating
activities.

     OUR DEBT  AGREEMENTS  MAY LIMIT OUR  FLEXIBILITY  IN RESPONDING TO CHANGING
MARKET CONDITIONS OR IN PURSUING BUSINESS OPPORTUNITIES.

     Our debt agreements  contain  restrictions  and  requirements  relating to,
among other things:

     o    additional borrowing;
     o    maintaining financial ratios;
     o    granting liens on our assets;
     o    selling assets;
     o    paying dividends; and
     o    merging.

     These restrictions and requirements may limit our flexibility in responding
to market conditions or in pursuing business opportunities that we believe would
have a positive effect on our business.

     EXTENSIVE  GOVERNMENTAL  REGULATION  OF  OUR  BUSINESS  AFFECTS  OUR  DAILY
OPERATIONS.

     Our  seismic  data   customers   are  subject  to  extensive   governmental
regulation.  In addition,  our oil and gas exploration and production operations
are subject to regulations. These regulations, among other things:

     o    govern environmental quality and pollution control; and
     o    limit rates of production.

     New  laws or  regulations  or  changes  to  existing  laws  or  regulations
affecting the oil and gas industry could reduce  customer demand for our seismic
data or increase the operating costs of our oil and gas business.

     LOSS OF KEY PERSONNEL COULD ADVERSELY AFFECT OUR BUSINESS.

     We  depend  on  a  relatively  small  group  of  management  and  technical
personnel.  The loss of one or more of these  individuals  could have a material
adverse effect on our business.



<PAGE>


Other

         The Company is not dependent on any particular raw materials,  patents,
trademarks or copyrights for its business operations.

         The following  organization chart gives an overview of the structure of
the Company:

<TABLE>
<CAPTION>

  <S>                       <C>                       <C>      <C>
                           ---------------------------
                      +----| Seitel Delaware, Inc.   | 1%
                      |    | 100%                    |----+    ----------------------------
                      |    ---------------------------    |    |Seitel Data, Ltd.         |
                      |                                   |----|                          |
                      |    --------------------------- 99%|    ----------------------------
                      |----| Seitel Data Corp.       |----+
                      |    | 100%                    |----+    ----------------------------
                      |    ---------------------------    |    |Seitel Offshore Corp.     |
                      |                                   |----|100%                      |
                      |    ---------------------------    |    ----------------------------
                      |----| DDD Energy, Inc.        |    |
                      |    | 100%                    |    |    ----------------------------
- ------------------    |    ---------------------------    |    |Seitel International, Inc.|
++++++++++++++++++    |                                   |----|100%                      |
+                +    |    ---------------------------    |    ----------------------------
+  SEITEL, INC.  +----+----| Matrix Geophysical, Inc.|    |
+                +    |    | 100%                    |    |    ----------------------------
++++++++++++++++++    |    ---------------------------    |    |Datatel, Inc.             |
- ------------------    |                                   +----|100%                      |
                      |    ---------------------------         ----------------------------
                      |----| Seitel Canada Holdings, |
                      |    | Inc.                    |         ----------------------------
                      |    | 100%                    |----+----|Olympic Seismic Ltd.      |
                      |    ---------------------------    |    |100%                      |
                      |                                   |    ----------------------------
                      |    ---------------------------    |    ----------------------------
                      |----| Seitel Management, Inc. |    |    |818312 Alberta Ltd.       |
                      |    | 100%                    |    +----|100%                      |
                      |    ---------------------------         ----------------------------
                      |
                      |    ---------------------------         ----------------------------
                      |----| Seitel Geophysical, Inc.|----+----|African Geophysical, Inc. |
                      |    | 100%             *<F1>  |    |    |100%                *<F1> |
                      |    ---------------------------    |    ----------------------------
                      |                                   |
                      |    ---------------------------    |    ----------------------------
                      |----| Alternative Communica-  |    +----|EHI Holdings, Inc.        |
                      |    | tions Enterprises, Inc. |         |100%                *<F1> |
                      |    | 100%                    |         ----------------------------
                      |    |                   *<F1> |
                      |    ---------------------------
                      |
                      |    ---------------------------
                      |----| Exsol, Inc.             |
                      |    | 100%                    |
                      |    |                   *<F1> |
                      |    ---------------------------
                      |
                      |    ---------------------------
                      |----| Geo-Bank, Inc.          |
                      |    | 100%                    |
                      |    |                   *<F1> |
                      |    ---------------------------
                      |
                      |    ---------------------------         ----------------------------
                      |----| Seitel Gas & Energy     |---------|Seitel Natural Gas, Inc.  |
                      |    | Corp.                   |         |100%                *<F1> |
                      |    | 100%              *<F1> |         ----------------------------
                      |    ---------------------------
                      |
                      |    ---------------------------
                      +----| Seitel Power Corp.      |
                      |    | 100%                    |
                      |    |                   *<F1> |
                      |    ---------------------------
                      |
                      |    ---------------------------
                      +----| Vision Energy, Inc.     |
                           | 19%                     |
                           |                   *<F1> |
                           ---------------------------

<FN>
<F1> * Dormant
</FN>
</TABLE>

<PAGE>


ITEM 2.  PROPERTIES
         ----------

     The Company,  through its wholly-owned subsidiary DDD Energy,  participates
in oil and  gas  exploration  and  development  efforts.  For  estimates  of the
Company's  net proved and proved  developed  oil and gas reserves as of December
31, 1999, see Note S to the Company's Consolidated  Financial Statements.  There
are numerous  uncertainties inherent in estimating quantities of proved reserves
and  in  projecting  future  rates  of  production  and  timing  of  development
expenditures,  including  many factors  beyond the control of the producer.  The
reserve  data  set  forth  in  Note S to the  Company's  Consolidated  Financial
statements  represents  only  estimates.  Reserve  engineering  is a  subjective
process of  estimating  underground  accumulations  of natural gas and  liquids,
including crude oil, condensate and natural gas liquids, that cannot be measured
in an exact  manner.  The accuracy of any reserve  estimate is a function of the
amount  and  quality  of  available  data  and  of  engineering  and  geological
interpretation  and  judgment.  As a result,  estimates of  different  engineers
normally  vary.  In  addition,  results  of  drilling,  testing  and  production
subsequent  to the date of an estimate  may justify  revision of such  estimate.
Accordingly,   reserve   estimates  are  often  different  from  the  quantities
ultimately  recovered.  The meaningfulness of such estimates is highly dependent
upon the accuracy of the assumptions upon which they were based.

     In general,  the volume of production from oil and gas properties  owned by
the Company  declines as reserves  are  depleted.  Except to the extent that the
Company acquires  additional  properties  containing proved reserves or conducts
successful exploration and development activities,  or both, the proved reserves
of the Company will decline as reserves are  produced.  Volumes  generated  from
future  activities of the Company are therefore  highly dependent upon the level
of success in finding or acquiring additional reserves and the costs incurred in
so doing.

     The following  table sets forth the number of productive  oil and gas wells
(including producing wells and wells capable of production) in which the Company
owned an interest as of December  31, 1999.  Gross oil and gas wells  include 10
with  multiple  completions.  All of the wells are operated by the Company's oil
and gas company  partners.  A "gross" well is a well in which the Company owns a
working  interest.  "Net"  wells  refer  to the  sum of the  fractional  working
interests owned by the Company in gross wells.

                      Gross Wells       Net Wells
                      -----------       ---------
Oil                       54              12.74
Gas                      124              34.28

     The following  table sets forth the number of net wells drilled in the last
three fiscal years in which the Company participated.
<TABLE>
<CAPTION>
                              Exploratory                           Development
                      --------------------------------      --------------------------------
                       Productive        Dry    Total        Productive     Dry       Total

<S>                         <C>          <C>     <C>             <C>        <C>        <C>
1999
Texas                       1.14         .28     1.42            1.09         -        1.09
Louisiana                    .52           -      .52               -         -           -
California                   .30           -      .30               -         -           -

1998
Texas                        .57        1.68     2.25            1.10         -        1.10
Mississippi                 1.00        1.00     2.00               -         -           -
Louisiana                   1.50        1.75     3.25             .66       .33         .99
California                   .15         .15      .30               -         -           -
Arkansas                       -         .13      .13               -         -           -
Michigan                       -         .25      .25               -         -           -

1997
Texas                       5.29        4.05     9.34            1.88       .52        2.40
Mississippi                 2.64        2.00     4.64            1.24         -        1.24
Louisiana                   2.35        1.05     3.40            1.05         -        1.05
</TABLE>

     As of December 31, 1999, the Company was participating in the drilling of 1
gross and .25 net wells.
<PAGE>

     The following table sets forth certain information  regarding the Company's
developed and undeveloped  lease acreage as of December 31, 1999. The table does
not include  additional  acreage,  which the Company may earn upon completion of
pending 3D seismic data projects.  "Gross" acres refer to the number of acres in
which the Company owns a working  interest.  "Net" acres refer to the sum of the
fractional working interests owned by the Company in gross acres.

                       Developed Acres              Undeveloped Acres
                 ----------------------------  -----------------------------
                    Gross            Net          Gross            Net
                 -------------   ------------  -------------   -------------

California                240             36        130,650          39,353
Texas                  23,186         10,405         86,730          23,597
Louisiana               6,864          1,446         67,300          20,411
Mississippi             4,100          1,321         28,376          11,350
Michigan                  260            130          3,300           1,100
Alabama                   160              5          1,516             270
                 -------------   ------------  -------------   -------------
Total                  34,810         13,343        317,872          96,081
                 =============   ============  =============   =============


     The  following  table  describes  for each of the last three fiscal  years,
crude oil  (including  condensate  and  natural  gas  liquids)  and  natural gas
production for the Company,  average  production costs and average sales prices.
All such production  comes from the U.S. Gulf Coast region.  The Company has not
filed any different estimates of its December 31, 1999 reserves with any federal
agencies.
<TABLE>
<CAPTION>
                           Net Production                       Average Sales Price
                        ---------------------    Average      -------------------------
      Year Ended           Oil       Gas        Production        Oil          Gas
     December 31,        (Mbbls)    (Mmcf)    Cost per Mcfe      (Bbls)       (Mcf)
     ------------        -------    ------    -------------      ------       -----

         <S>                 <C>     <C>           <C>           <C>           <C>
         1999                346     5,693         $.61          $16.35        $2.28
         1998                386     6,216          .55           11.78         2.27
         1997                420     6,926          .55           16.83         2.63
</TABLE>

     The amounts in 1997 include  56,000  barrels and 1,795  million  cubic feet
delivered under the terms of a volumetric production payment agreement effective
July 1, 1996 at an average price of $14.04 per barrel and $1.84 per mcf.

ITEM 3.  LEGAL PROCEEDINGS

     The Company is involved from time to time in ordinary,  routine  claims and
lawsuits  incidental to its business.  In the opinion of  management,  uninsured
losses, if any,  resulting from the ultimate  resolution of these matters should
not be material to the Company's financial position or results of operations.

                                     PART II


ITEM 5.  MARKET FOR REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER MATTERS

     The Company's  Common Stock is traded on the New York Stock  Exchange.  The
following  table sets forth the high and low sales  prices for the Common  Stock
for 1999 and 1998 as reported by the New York Stock Exchange.
<TABLE>
<CAPTION>
                                             1999                               1998
                                -------------------------------    -------------------------------
                                    High              Low              High              Low
                                -------------     -------------    -------------     -------------
  <S>                         <C>               <C>              <C>               <C>
  First Quarter               $     15.25       $       9.31     $      17.25      $      13.19
  Second Quarter                    18.13              12.38            19.31             14.69
  Third Quarter                     16.50               9.56            17.25              8.69
  Fourth Quarter                    10.19               5.50            16.00              9.56
</TABLE>

     On March 27, 2000,  the closing  price for the Common Stock was $8.125.  To
the best of the  Company's  knowledge,  there  are  approximately  1,006  record
holders of the Company's Common Stock as of March 27, 2000.
<PAGE>

Dividend Policy

     The Company did not pay cash dividends  during 1998 or 1999, and it intends
to retain future earnings in order to provide funds for use in the operation and
expansion of its  business.  Because the payment of dividends is dependent  upon
earnings,  capital requirements,  financial conditions, any required consents of
lenders and other factors, there is no assurance that dividends,  whether in the
form of stock or cash, will be paid in the future.

ITEM 6.   SELECTED CONSOLIDATED  FINANCIAL DATA (in  thousands, except per share
          data)

     The following table summarizes  certain historical  consolidated  financial
data of the  Company  and is  qualified  in its  entirety  by the more  detailed
consolidated financial statements and notes thereto included in Item 8 hereof.
<TABLE>
<CAPTION>
                                                                       Year Ended December 31,
                                         -----------------------------------------------------------------------------------
Statement of Operations Data:               1999              1998              1997             1996               1995
                                         -----------       -----------       -----------      ------------       -----------

<S>                                    <C>                <C>               <C>              <C>                <C>
Revenue                                $     128,707      $   144,857       $    127,556     $     106,002      $     74,439

Expenses and costs:
   Depreciation, depletion and
     amortization                             59,624           69,890             49,679            39,249            26,872
   Impairment of oil and gas
     properties                                    -                -              9,560                 -                 -
   Cost of sales                               5,016            4,874             17,953            19,402            13,071
   Selling, general and
     administrative                           28,587           26,599             23,043            19,165            15,393
                                         -----------       -----------       -----------      ------------       -----------
                                              93,227          101,363            100,235            77,816            55,336
                                         -----------       -----------       -----------      ------------       -----------

Income from operations                        35,480            43,494            27,321            28,186            19,103

Interest expense, net                       (11,077)            (5,540)           (3,554)           (2,900)           (3,078)
Equity in earnings (loss) of
   affiliate                                    (91)               222               146              (186)               -
Impairment due to dividend
distribution of affiliate stock              (7,794)                 -                 -                 -                 -
Gain on sale of subsidiary
   stock                                           -                 -            18,449                 -                 -
Increase (decrease) in under-
   lying equity of affiliate                       -              (193)          10,750                  -                 -
Extinguishment of volumetric
   production payment                              -                 -            (4,133)                -                 -
                                         -----------       -----------       -----------      ------------       -----------

Income from continuing
   operations before provision
   for income taxes                           16,518            37,983            48,979            25,100            16,025

Provision for income taxes                     7,138            13,623            17,422             8,863             5,898
                                         ------------       -----------       -----------      ------------       -----------
Income from continuing
   operations                                  9,380            24,360            31,557            16,237            10,127

Loss from discontinued
   operations, net of tax                          -                 -                 -              (988)           (1,196)
Loss on disposal of
   discontinued operations,
   net of tax                                      -                 -                 -                 -              (252)
                                         ------------       -----------       -----------      ------------       -----------

Net income                             $       9,380      $     24,360      $     31,557     $      15,249      $      8,679
                                         ============       ===========       ===========      ============       ===========
</TABLE>


<PAGE>


<TABLE>
<CAPTION>
                                                                       Year Ended December 31,
                                         ------------------------------------------------------------------------------------
Statement of Operations Data:               1999               1998              1997             1996               1995
                                         ------------       -----------       -----------      ------------       -----------

<S>                                    <C>                <C>               <C>              <C>                <C>
Earnings per share: (1)
   Basic:
   Income from continuing
     operations                        $         .39      $       1.07      $       1.48     $         .83      $        .55
   Discontinued operations                         -                 -                 -              (.05 )            (.08 )
                                         ------------       -----------       -----------      ------------       -----------
   Net income                          $         .39      $       1.07      $       1.48     $         .78      $        .47
                                         ============       ===========       ===========      ============       ===========

   Diluted:
   Income from continuing
     operations                        $         .39      $       1.05      $       1.43     $         .79      $        .49
   Discontinued operations                         -                 -                 -              (.05 )            (.07 )
                                         ------------       -----------       -----------      ------------       -----------
   Net income                          $         .39      $       1.05      $       1.43     $         .74      $        .42
                                         ============       ===========       ===========      ============       ===========

Weighted average shares: (1)
   - Basic                                    23,863            22,720            21,380            19,646            18,408
   - Diluted                                  24,063            23,124            22,050            20,660            20,976


                                                                         As of December 31,
                                         ------------------------------------------------------------------------------------
Balance Sheet Data:                         1999               1998              1997             1996               1995
                                         ------------       -----------       -----------      ------------       -----------

Data bank, net                         $     329,885      $    262,950      $    180,936     $     126,998      $    105,369

Oil and gas properties, net                  150,167           148,977           112,915            86,572            42,424

Total assets                                 555,919           495,767           365,682           294,679           209,567

Total debt                                   225,223           150,690            90,566            86,488            61,283

Stockholders' equity                         243,024           237,587           207,273           155,641           120,378

Stockholders' equity per
   common share outstanding
   at December 31                      $       10.30      $      10.05      $       9.26     $        7.51      $       6.38

Common shares outstanding at
   December 31 (1)<F1> (2)<F2>                23,605            23,629            22,373            20,724            18,873
<FN>
(1)<F1>  All number of shares and per share  amounts  has been  restated to give
         effect to the  two-for-one  stock split  effected in the form of a 100%
         stock dividend in December 1997.

(2)<F2>  Net of treasury shares.
</FN>
</TABLE>




<PAGE>


ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
         AND RESULTS OF OPERATIONS

Introduction

     The  following  table  sets  forth  selected   financial   information  (in
thousands) for the periods indicated, and should be read in conjunction with the
discussion of Results of Operations below.
<TABLE>
<CAPTION>
                                                                           1999                1998                1997
                                                                       -------------       -------------       -------------
<S>                                                                  <C>                 <C>                 <C>
Seismic:
   Revenue                                                           $      109,671      $      125,863      $       85,560
   Amortization                                                              49,375              57,117              35,163
   Cost of sales                                                                296                 191                 394

Oil and Gas:
   Revenue                                                                   19,036              18,994              25,680
   Depletion                                                                  9,093              11,872              12,666
   Impairment of oil and gas properties                                           -                   -               9,560
   Cost of sales                                                              4,720               4,683               5,168

Geophysical Services:
   Revenue                                                                        -                   -              16,316
   Depreciation                                                                   -                   -                 983
   Cost of sales                                                                  -                   -              12,391

Other depreciation                                                            1,156                 901                 867
Selling, general and administrative                                          28,587              26,599              23,043
Net interest expense                                                         11,077               5,540               3,554
Equity in earnings (loss) of affiliate                                         (91)                 222                 146
                                                                       -------------       -------------       -------------

Income before provision for income
   taxes and special items (1)<F1>                                           24,312              38,176              23,913

Provision for income taxes                                                    9,866              13,692               8,498
                                                                       -------------       -------------       -------------

Income before special items (1)<F1>                                  $       14,446      $       24,484      $       15,415
                                                                       =============       =============       =============
Net income                                                           $        9,380      $       24,360      $       31,557
                                                                       =============       =============       =============
- ----------------------------------
<FN>
         (1)<F1>  Special items for the year ended December 31, 1999,  include a
                  pre-tax loss of $7,794,000 related to an impairment due to the
                  dividend  distribution of affiliate  stock.  Special items for
                  the year ended  December  31, 1998  include a pre-tax  loss of
                  $193,000  related to the decrease in the underlying  equity of
                  an affiliate.  Special  items for the year ended  December 31,
                  1997  include a pre-tax  gain of  $29,199,000  related  to the
                  spin-off of the Company's seismic  acquisition crew subsidiary
                  and a pre-tax loss of $4,133,000 related to the extinguishment
                  of the Company's volumetric production payment.
</FN>
</TABLE>

Results of Operations

     Seismic

     Most oil and gas  companies  consider  seismic  data an  essential  tool to
generate and delineate drilling prospects for the oil and gas industry.  Oil and
gas companies are increasingly using seismic data in oil and gas exploration and
development efforts to increase the probability of drilling success. By properly
utilizing  seismic  data,  oil  and gas  companies  can  significantly  increase
drilling  success rates and reduce the occurrence of dry holes. By participating
in multi-client  surveys,  oil and gas companies can share the cost of expensive
surveys  that they could not  otherwise  afford.  Further,  seismic can increase
recoveries  of  reserves  from  existing,  mature oil fields by  optimizing  the
drilling  location  of  development  wells  and  by  revealing  additional,   or
"step-out," locations that would not otherwise be apparent.
<PAGE>

     The Company  generates  seismic revenue by licensing data from our existing
data library and creating new data for customers.  Revenue from the marketing of
seismic data was  $109,671,000,  $125,863,000 and $85,560,000  during 1999, 1998
and 1997,  respectively.  In May 1999, the Company made a management decision to
focus its marketing  team on licensing of existing data  ("library  sales") that
would generate cash flow. Library sales in 1999 increased to the record level of
$63,058,000,  an increase of 36% over the previous record year of $46,359,000 in
1998.  The  Company's  decision  to reduce data  creation  in 1999 caused  total
seismic  revenue  to be  lower  than  1998  levels,  but  also  reduced  capital
expenditures,   producing  solid  financial  results  under  difficult  industry
conditions.  In 1998,  the  increase  in seismic  revenue  from 1997  levels was
primarily  attributable  to increased  efforts and investment in the creation of
new seismic data. In February 1999, the Company  acquired  substantially  all of
the seismic assets of Amoco Canada, making Seitel, Inc. the largest seismic data
library company in North America.

     As witnessed by the strength of the Company's library sales in 1999, demand
for its seismic data continues to be strong despite the uncertainty  surrounding
oil and gas prices. Furthermore,  demand for its 2D data continues to be strong,
with 1999 sales levels  increasing  over 1998 levels.  The first three months of
2000 have produced  higher than expected  commodity  prices which is expected to
generate strong cash flow for the oil and gas industry and lead to rising levels
of capital  expenditures.  This  scenario  should lead to  improving  demand for
Seitel,  Inc.  products and  services,  including  our library data and new data
creation.

     Data bank amortization amounted to $49,375,000, $57,117,000 and $35,163,000
for the years ended December 31, 1999, 1998 and 1997,  respectively.  The amount
of seismic data amortization  fluctuates based on the level of seismic marketing
revenue.  As a percentage  of revenue from  licensing  seismic  data,  data bank
amortization was 46%, 46% and 42% for 1999, 1998 and 1997,  respectively.  These
changes  between  years are  primarily due to the mix of sales of 2D and 3D data
amortized  at  varying  percentages  based on each data  program's  current  and
expected future  revenue.  For a discussion of the Company's  accounting  policy
related  to  seismic  data  amortization  refer  to  Note  A  of  the  Company's
Consolidated Financial Statements.

     The Company's (and its industry's) seismic revenue trends are evaluated and
results are used in  estimating  future  revenue  expected to be received on its
seismic data.  When  economic  conditions  indicate,  the Company may reduce its
estimates of future revenue, causing the amortization rate to rise and liquidity
and  operating  results to decline.  If the Company  perceives an  impairment in
value due to reduced,  or a lack of, estimated  future revenue,  a write-down of
the asset is recognized.  In periods of upturn, the opposite may occur,  except,
however,  the prior write-downs are not reversed.  Management  believes that the
economic  outlook  for  the  Company's   seismic  business  is  stable  and  the
possibility for significant improvement exists.

     Oil and Gas

     Net volume and price  information  for the Company's oil and gas production
for the years  ended  December  31,  1999,  1998 and 1997 is  summarized  in the
following table (amounts include deliveries made under the terms of a volumetric
production payment agreement effective from July 1, 1996 to June 30, 1997):
<TABLE>
<CAPTION>
                                                                        Year Ended December 31,
                                                             -----------------------------------------------
                                                                1999              1998              1997
                                                             -----------       -----------       -----------
<S>                                                        <C>               <C>               <C>
Natural gas volumes (mmcf)                                        5,693             6,216             6,926
Average natural gas price ($/mcf)                          $       2.28      $       2.27      $       2.63
Crude oil/condensate volumes (mbbl)                                 346               386               420
Average crude oil/condensate price ($/bbl)                 $      16.35      $      11.78      $      16.83
</TABLE>

     Oil and gas revenue was  $19,036,000,  $18,994,000 and  $25,680,000  during
1999, 1998 and 1997, respectively. The increase in oil and gas revenue from 1998
to 1999 was primarily  attributable to higher average oil prices received by the
Company  offset  by lower oil and gas  production.  The  decline  in oil and gas
production between 1998 and 1999 was primarily due to normal production declines
experienced on several of the Company's older wells. Additionally, in July 1999,
the  Company  sold its  interest  in 11 oil and gas  wells,  five of which  were
producing.  The decrease in oil and gas revenue from 1997 to 1998 was  primarily
due to lower realized  commodity prices along with lower natural gas production.
The  production  decline  from  several  of the  Company's  shallow  short-lived
producing  properties  had not yet been  offset by  production  from new  wells.
Several  wells with high  initial  flow rates  experienced  production  declines
earlier and greater than was expected. Additionally, some development wells were

<PAGE>

not drilled in the time frame  anticipated by the Company as a result of some of
its partners  delaying plans to drill these wells due to lower commodity prices,
reallocation of budget funds and consolidations within the industry.

     Depletion  of oil and gas  properties,  excluding  the  impairment  in 1997
discussed below, was $9,093,000, $11,872,000 and $12,666,000 for the years ended
December 31, 1999, 1998 and 1997,  respectively,  which amounted to $1.17, $1.39
and $1.34, respectively,  per mcfe of gas produced during such periods. The rate
per mcfe varies with the  estimate of proved oil and gas reserves of the Company
at each quarter end, as well as evaluated property costs.

     At December 31, 1997, the Company recorded a non-cash impairment of oil and
gas  properties  totaling  $9,560,000  ($6,160,000,  net of taxes)  based on its
December 31, 1997,  estimated  proved  reserves  valued at March 18, 1998 market
prices.  The  impairment  was primarily  due to  substantially  lower  commodity
prices.

     Oil and gas production  costs amounted to $.61,  $.55, and $.55 per mcfe of
gas produced during 1999, 1998 and 1997, respectively.  The increase in the rate
from 1998 to 1999 is primarily  attributable to an increase in compression costs
for the Company's East Texas Smackover properties.

     Geophysical Services

     The Company completed an initial public offering of Eagle Geophysical, Inc.
("Eagle"),  its former  seismic  acquisition  crew  subsidiary,  in August 1997.
Consequently, the Company had no operations from geophysical services in 1998 or
1999.

     Corporate and Other

     The Company's selling, general and administrative expenses were $28,587,000
in 1999,  $26,599,000 in 1998 and $23,043,000 in 1997. The increase from 1998 to
1999 was primarily due to legal and other non-recurring expenses incurred during
1999 and an increase in costs resulting from the Company's  expansion in Canada.
These  increases  were  partially  offset by a reduction  of variable  expenses,
including  commissions on revenue and compensation tied to pre-tax profits.  The
increase  from  1997 to 1998  was  primarily  a  result  of  variable  expenses,
including  commissions  on revenue  and  compensation  tied to pre-tax  profits,
related to the increased  volume of business.  As a percentage of total revenue,
these expenses were 22% in 1999 and 18% in 1998 and 1997.

     The Company's interest expense was $11,791,000 in 1999,  $5,963,000 in 1998
and $4,609,000 in 1997. The increase  between 1998 and 1999 was primarily due to
the  addition of $138 million of senior notes on February 12, 1999 at an average
interest  rate of  7.3%  partially  offset  by  lower  interest  expense  on the
Company's  revolving  line  of  credit  due  to  lower  amounts  being  borrowed
throughout  1999.  The increase from 1997 to 1998 was primarily due to increased
borrowings made under the Company's revolving line of credit during 1998.

     Interest  income was $714,000 in 1999,  $423,000 in 1998 and  $1,055,000 in
1997.  The increase  from 1998 to 1999 was  primarily  attributable  to interest
income received on the notes receivable from officers and employees entered into
in October  1998.  The decrease  between 1997 to 1998 was  primarily  due to the
fluctuations in cash balances available for investment.

     On August 11, 1997, Eagle completed an initial public offering in which the
Company  sold  1,880,000  of its  3,400,000  shares of Eagle  common  stock as a
selling  stockholder.  The Company received net proceeds of $29,723,000 from its
participation  in the offering,  resulting in a pre-tax gain,  net of costs,  of
$18,449,000  from its sale of Eagle  stock in 1997.  Additionally,  the  Company
recorded a pre-tax gain, net of costs,  of $10,750,000 in 1997,  representing an
increase  in the  Company's  underlying  equity of Eagle as a result of  Eagle's
issuance of stock in connection with the offering.  In 1998,  Eagle issued stock
in  connection  with two  acquisitions,  which  caused  the  Company to record a
pre-tax loss of $193,000.  The Company's  equity in earnings (loss) of Eagle was
$146,000 for the period from August 11, 1997 to December 31, 1997,  $222,000 for
the year ended  December 31, 1998 and $(91,000) for the year ended  December 31,
1999.

     On April 22, 1999, the Board of Directors of Seitel,  Inc.  declared to its
common  stockholders a dividend  consisting of the remaining 1,520,000 shares of
the common  stock of Eagle owned by the  Company.  The fair market  value of the
common  stock of Eagle held by the Company on the date the dividend was declared
was lower than the carrying  value of the stock on the Company's  balance sheet;
therefore, a non-cash,  non-recurring,  pre-tax impairment, net of bonus effect,
of $7,794,000 was recorded for the year ended December 31, 1999.
<PAGE>

     The Company entered into an agreement, which was effective July 1, 1997, to
extinguish its volumetric production payment. The cost to acquire the production
payment liability exceeded its book value. As a result of this transaction,  the
Company recorded a pre-tax loss of $4,133,000 in 1997.

     The  Company's  effective  income tax rate on income  before  provision for
income  taxes and special  items was 40.6%,  35.9% and 35.5% for the years ended
December 31, 1999,  1998 and 1997,  respectively.  The increase in the effective
income tax rate from 1998 to 1999 was primarily a result of Canadian operations,
which  are  taxed at a higher  rate than the U.S.  rate,  representing  a larger
percentage of pre-tax profits than in prior years.

Liquidity and Capital Resources

     The Company's cash flow from  operations was  $74,494,000,  $97,493,000 and
$76,161,000 for the years ended December 31, 1999, 1998 and 1997,  respectively.
The decrease from 1998 to 1999 was primarily  attributable  to (i) a decrease in
cash  received from  customers  due to the decrease in revenue in 1999,  (ii) an
increase  in  payments  to  suppliers  in 1999 and (iii) an increase in interest
expense  paid due to the  issuance of $138  million  senior  notes in 1999.  The
increase from 1997 to 1998 was primarily due to (i) an increase in cash received
from customers due to higher revenue in 1998 and (ii) a decrease in cash paid to
suppliers and employees  due to lower cost of sales  incurred in 1998  resulting
from the 1997 spin-off of the Company's crew  subsidiary  and increased  payable
balances at December 31, 1998.

     The Company has a $75 million  unsecured  revolving line of credit facility
that matures on March 16, 2001. The facility bears interest at a rate determined
by the ratio of the Company's debt to cash flow from operations. Pursuant to the
interest rate pricing structure, funds can currently be borrowed at LIBOR plus 1
1/2%,  the  bank's  prevailing  prime  rate,  or the  sum of the  Federal  Funds
effective rate for such day plus 1/2%. Certain restrictions exist that limit the
amount of borrowing that the Company can make under this  facility.  The balance
outstanding  on the  revolving  line of credit at March 27, 2000 was $37 million
bearing an average interest rate of 6.89%.

     On November 9, 1999, the Company's wholly-owned subsidiary, Olympic Seismic
Ltd.  ("Olympic"),  entered into revolving  credit  facilities which allow it to
borrow up to $5 million (Canadian dollars) by way of prime based loans, bankers'
acceptances,  or letters of credit.  Prime based loans and bankers'  acceptances
bear  interest  at the rate of the  bank's  prime  rate plus 0.35% per annum and
0.50% per  annum,  respectively.  Letter of credit  fees are based on  scheduled
rates in effect at the time of  issuance.  The  facility is secured by Olympic's
assets, but is not guaranteed by Seitel,  Inc. or any of its other subsidiaries.
Borrowings under the facility are limited to 75% of trade  receivables less than
90 days old. The  facility is subject to repayment  upon demand and is available
from  time to time at the  Bank's  sole  discretion.  Olympic  did not  have any
amounts  outstanding under this line of credit at December 31, 1999, or at March
27, 2000. Olympic is not a party to any of the debt held by Seitel, Inc.

     On February 12, 1999,  the Company  completed a private  placement of three
series of unsecured Senior Notes totaling $138 million. The Series D Notes total
$20 million,  bear  interest at a fixed rate of 7.03% and mature on February 15,
2004, with no principal  payments due until  maturity.  The Series E Notes total
$75 million,  bear  interest at a fixed rate of 7.28% and mature on February 15,
2009, with annual  principal  payments of $12.5 million  beginning  February 15,
2004.  The Series F Notes total $43  million,  bear  interest at a fixed rate of
7.43% and mature on February  15,  2009,  with no  principal  payments due until
maturity.  Interest  on all  series of the  notes is  payable  semi-annually  on
February 15 and August 15. The Company  used a majority of the proceeds to repay
amounts  outstanding  under its revolving  lines of credit and the remainder for
capital expenditures.

     On December 28, 1995,  the Company  completed a private  placement of three
series  of   unsecured   Senior  Notes   totaling   $75  million.   The  Company
contemporaneously  issued  its Series A Notes and  Series B Notes,  which  total
$52.5 million and bear interest at a fixed rate of 7.17%.  On April 9, 1996, the
Company  issued its Series C Notes,  which total $22.5 million and bear interest
at a fixed rate of 7.48%.  The Series A Notes mature on December  30, 2001,  and
require  annual  principal  payments of $8.3 million which began on December 30,
1999.  The Series B and Series C Notes mature on December 30, 2002,  and require
combined  annual  principal  payments of $10 million which began on December 30,
1998.  Interest on all series of the notes is payable  semi-annually  on June 30
and December 30. As of March 27, 2000, the balance  outstanding on the Series A,
B, and C Notes was $46,667,000.

     The Company may offer from time to time in one or more series (i) unsecured
debt securities,  which may be senior or subordinated,  (ii) preferred stock and
(iii) common stock, or any  combination of the foregoing,  up to an aggregate of
$41,041,600 pursuant to an effective "shelf"  registration  statement filed with

<PAGE>

the SEC. In addition,  under another  effective "shelf"  registration  statement
filed with the SEC, the Company may offer up to an aggregate of  $200,000,000 of
the following securities,  in any combination,  from time to time in one or more
series:  (i) unsecured debt securities,  which may be senior or  unsubordinated;
(ii) preferred stock; (iii) common stock, and (iv) trust preferred securities.

     From  January  1,  1999,  through  March 27,  2000,  the  Company  received
$5,317,000 from the exercise of common stock purchase  warrants and options.  In
connection  with these  exercises,  the Company will also receive  approximately
$620,000 in tax savings.

     On July 26, 1999, the Company's wholly-owned  subsidiary,  DDD Energy, sold
its 18.75%  working  interest in 11 oil and gas wells,  one salt water  disposal
well and  approximately  16,000 acres of leasehold  and options to lease for net
proceeds of approximately $11.7 million.

     In November 1999, the Company's 19% owned subsidiary,  Vision Energy, filed
a  registration  statement with the SEC to accomplish the spin-off of DDD Energy
through an initial  public  offering.  In the proposed  offering,  Vision Energy
would  acquire all of the stock of DDD Energy  from the Company in exchange  for
the issuance of shares of Vision  Energy  stock to the Company,  and the Company
would sell most of these Vision Energy  shares in the public  offering for cash.
Completion  of the  offering  is  expected  to occur  during the second or third
quarter of 2000; however, its completion is dependent upon market conditions and
other factors.  As of December 31, 1999, the Company had incurred costs relating
to this offering totaling $757,000 which are included in prepaid expenses in the
Company's  balance  sheet as of December  31,  1999.  The Company  continues  to
explore  opportunities to maximize the value of DDD Energy.  The Company intends
to use the cash  proceeds  from this  spin-off  of DDD Energy to reduce debt and
provide funds for seismic data bank capital expenditures.

     During November and December 1999, the Company  repurchased  504,700 shares
of its common  stock in the open market at a cost of  $3,302,000,  pursuant to a
stock repurchase program authorized by the Board of Directors in 1997. The Board
has authorized  expenditures  of up to $25 million towards the repurchase of its
common stock. As of March 27, 2000, the Company has  repurchased  679,700 shares
of its common stock at a cost of $6,275,000 under this plan.

     During 1999,  gross seismic data bank additions and capitalized oil and gas
exploration  and  development  costs amounted to  $116,343,000  and  $21,939,000
respectively.  These capital expenditures,  as well as taxes, interest expenses,
cost  of  sales  and  general  and  administrative   expenses,  were  funded  by
operations,  proceeds from the sale of oil and gas properties, proceeds from the
exercise of common stock  purchase  warrants and options,  borrowings  under the
Company's  revolving  line of credit and  proceeds  from the  issuance of senior
notes.

     Currently,   the  Company   anticipates   capital   expenditures  to  total
approximately $70 million for seismic data bank additions during fiscal 2000 and
approximately  $11 million for oil and gas exploration  and development  efforts
during the first half of 2000.  If the  proposed  spin-off of DDD Energy has not
been completed by the end of the second  quarter,  oil and gas  exploration  and
development  capital  expenditures  are expected to be $9 million for the second
half of 2000.  The Company  believes its current cash  balances,  revenues  from
operating  sources  and  proceeds  from the  exercise of common  stock  purchase
warrants and options,  combined  with its  available  revolving  line of credit,
should  be   sufficient  to  fund  the   currently   anticipated   2000  capital
expenditures,   along  with   expenditures   for   operating   and  general  and
administrative  expenses.  If these  sources  are not  sufficient  to cover  the
Company's  anticipated  expenditures  or if the  Company  were to  increase  its
planned capital  expenditures for 2000, the Company could arrange for additional
debt or equity  financing during 2000;  however,  there can be no assurance that
the Company  would be able to  accomplish  any such debt or equity  financing on
satisfactory  terms.  If such  debt or  equity  financing  is not  available  on
satisfactory  terms,  the Company could reduce its current capital budget or any
proposed  increases to its capital budget,  and fund expenditures with cash flow
generated from operating sources.  Upon consummation of the proposed spin-off of
DDD Energy, proceeds from such offering would be used to reduce debt and provide
funds for additional seismic data bank capital expenditures.

Recent Accounting Pronouncements

     In June 1998, the Financial Accounting Standards Board issued SFAS No. 133,
"Accounting for Derivative Instruments and Hedging Activities." SFAS No. 133, as
amended by SFAS No. 137, is required to be adopted on January 1, 2001,  although
earlier  adoption  is  permitted.   The  statement  establishes  accounting  and
reporting  standards  requiring  that  every  derivative  instrument  (including
certain derivative  instruments  embedded in other contracts) be recorded in the

<PAGE>

balance  sheet as either an asset or liability  measured at its fair value.  The
statement  requires  that changes in the  derivative's  fair value be recognized
currently in earnings unless specific hedge accounting criteria are met. Special
accounting  for  qualifying  hedges  allows a  derivative's  gains and losses to
offset related results on the hedged item in the income statement,  and requires
that a company formally  document,  designate,  and assess the  effectiveness of
transactions  that receive hedge accounting  treatment.  The Company has not yet
quantified  the impact of adopting SFAS No. 133.  However,  management  does not
believe  that the  adoption  of SFAS No. 133 will have a material  impact on the
Company's financial position or results of operations.

Year 2000

     The Company did not experience any significant operational  difficulties or
incur any  significant  expenses in  connection  with the Year 2000  issue.  The
Company  will  continue to monitor all  critical  systems for any  incidents  of
delayed  complications  or disruptions  and problems  encountered  through third
parties with whom the Company deals so that they may be timely addressed.

Impact of Inflation and Changing Prices

     The general  availability  of seismic  equipment and crews and the level of
exploration  activity in the oil and gas  industry  directly  affect the cost of
creating  seismic data.  The pricing of the  Company's  products and services is
primarily a function of these factors.  For these reasons,  the Company does not
believe  inflationary  trends have had any  significant  impact on its financial
operating results during the three years ended December 31, 1999.

Information Regarding Forward Looking Statements

     This Annual Report on Form 10-K includes forward-looking  statements within
the meaning of Section 27A of the  Securities Act of 1933 and Section 21E of the
Securities  Exchange  Act of  1934.  Although  the  Company  believes  that  its
expectations are based on reasonable assumptions,  it can give no assurance that
its goals will be achieved. Important factors that could cause actual results to
differ  materially from those in the forward looking  statements herein include,
but are not  limited to,  changes in the  exploration  budgets of the  Company's
seismic data and related  services  customers,  actual  customer  demand for the
Company's seismic data and related services, the extent of the Company's success
in acquiring oil and gas properties and in discovering, developing and producing
reserves,  the timing and extent of changes in commodity prices for natural gas,
crude oil and  condensate  and natural gas liquids and conditions in the capital
markets and equity  markets  during the periods  covered by the forward  looking
statements. See Item 1 - Business-Risk Factors.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     The  Company  is  exposed  to market  risk,  including  adverse  changes in
commodity  prices,  interest  rates  and  foreign  currency  exchange  rates  as
discussed below.

Commodity Price Risk

     The Company  produces and sells  natural  gas,  crude oil,  condensate  and
natural  gas  liquids.  The  Company  currently  sells  most  of its oil and gas
production under price sensitive or market contracts. As a result, the Company's
financial results can be significantly affected as oil and gas prices fluctuate.
The  Company  has a price  risk  management  program  that  utilizes  derivative
financial instruments,  principally natural gas swaps, to reduce the price risks
associated  with  fluctuations in natural gas prices.  However,  these contracts
also limit the  benefits the Company  would  realize if prices  increase.  These
financial  instruments are designated as hedges and accounted for on the accrual
basis,  recognizing gains and losses in oil and gas production revenues when the
associated  production  occurs.  These  contracts  usually are placed with major
derivative  dealers that the Company  believes  are minimal  credit  risks.  The
Company  defers and recognizes in income the net gains and losses on natural gas
swaps designated as hedges of anticipated transactions,  including accrued gains
or losses upon  maturity or  termination  of the contract,  when the  associated
hedged gas is produced.

     During 1998, the Company  recognized  net hedging gains of $653,000.  As of
December 31, 1998,  the Company did not have any open  commodity  price  hedges.
During  1999,  the Company  entered  into  natural gas swaps in order to hedge a
portion  of  anticipated  natural  gas  production.  During  1999,  the  Company
recognized net hedging losses of $308,000.  As of December 31, 1999, the Company
had open commodity price hedges totaling  2,285,000 MMBtu at an average price of
2.51 per MMBtu. The estimated fair value of these open commodity price hedges as
of December 31, 1999 was  $(377,000).  The Company  continually  reviews and may
alter its hedged positions.  The Company's strategy is to seek arrangements with
guaranteed minimum prices and flexibility to participate in improving  commodity
prices.


<PAGE>



     As of December 31, 1999, the Company had the following hedges in place:

                                           Volume Per
                                             Month           Hedge Price
Month                                       (MMBtu)           ($/MMBtu)
- -------------------------------------    ---------------    ---------------

January 2000                                 310,000            $2.51
February 2000                                290,000             2.51
March 2000                                   310,000             2.51
April 2000                                   300,000             2.51
May 2000                                     310,000             2.51
June 2000                                    300,000             2.51
July 2000                                    310,000             2.51
August 2000                                  155,000             2.57
                                         ---------------

         Total volume hedged               2,285,000
                                         ===============


Interest Rate Risk

     The Company may enter into various financial instruments,  such as interest
rate swaps,  to manage the impact of changes  in interest rates.  Currently, the
Company  has no open  interest  rate  swap or  interest  rate  lock  agreements.
Therefore, the Company's exposure to changes in interest rates primarily results
from its  short-term  and long-term  debt with both fixed and floating  interest
rates.  The following  table presents  principal or notional  amounts (stated in
thousands)  and  related  average  interest  rates by year of  maturity  for the
Company's debt obligations and their indicated fair market value at December 31,
1999:
<TABLE>
<CAPTION>
                                                                                             THERE-                   FAIR
                                  2000        2001        2002       2003        2004        AFTER       TOTAL       VALUE
                                 --------    --------    --------   --------    --------    --------    --------    ---------
<S>                            <C>         <C>         <C>        <C>         <C>         <C>         <C>         <C>
Liabilities - Long-Term Debt:
   Variable Rate               $       -   $  40,500   $       -  $       -   $       -   $       -   $  40,500   $   40,500
   Average Interest Rate               -       7.22%           -          -           -           -       7.22%            -

   Fixed Rate                  $  18,378   $  18,333   $  10,000  $       -   $  32,500   $ 105,500   $ 184,711   $  182,656
   Average Interest Rate           7.25%       7.25%       7.31%          -       7.13%       7.34%       7.28%            -
</TABLE>

     The  following  table  presents  principal or notional  amounts  (stated in
thousands)  and  related  average  interest  rates by year of  maturity  for the
Company's debt obligations and their indicated fair market value at December 31,
1998:
<TABLE>
<CAPTION>
                                                                                                                     FAIR
                                        1999            2000           2001           2002           TOTAL           VALUE
                                      ---------       ---------      ---------       --------       ---------       --------
<S>                                 <C>             <C>            <C>             <C>            <C>             <C>
Liabilities - Long-Term Debt:
   Variable Rate                    $   19,000      $        -     $   66,500      $       -      $   85,500      $  85,500
   Average Interest Rate                 6.41%               -          6.33%              -           6.35%              -

   Fixed Rate                       $   18,461      $   18,378     $   18,333      $  10,000      $   65,172      $  65,149
   Average Interest Rate                 7.25%           7.25%          7.25%          7.31%           7.26%              -
</TABLE>

Foreign Currency Exchange Rate Risk

     The Company  conducts  business in the Canadian  dollar and pounds sterling
and is therefore  subject to foreign  currency  exchange rate risk on cash flows
related to sales, expenses, financing and investing transactions.  Exposure from
market rate  fluctuations  related to activities in Canada,  where the Company's
functional currency is the Canadian dollar, and in the Cayman Islands, where the
Company's functional currency is pounds sterling, is not material at this time.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

     The financial statements and financial statement schedules required by this
Item are set forth at the pages indicated in ITEM 14(a) (1) and (2) below.
<PAGE>

ITEM 9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

     NONE

                                    PART III

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The  information  required to be set forth in this Item is  incorporated by
reference  to a  similarly  titled  heading in the  Company's  definitive  proxy
statement  relating to the 2000 annual meeting of its  stockholders  to be filed
with the  Securities  and Exchange  Commission not later than 120 days after the
end of the  fiscal  year  covered  by this Form  10-K  (hereinafter  the  "Proxy
Statement").

ITEM 11.   EXECUTIVE COMPENSATION

     The  information  required to be set forth in this Item is  incorporated by
reference to a similarly titled heading in the Proxy Statement.

ITEM 12.  SECURITY OWNERSHIP OF BENEFICIAL OWNERS AND MANAGEMENT

     The information required to be set forth in this Item is incorporated
by reference to a similarly titled heading in the Proxy Statement.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The  information  required to be set forth in this Item is  incorporated by
reference to a similarly titled heading in the Proxy Statement.


                                     PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

     (a)  Documents filed as part of this Report                           Page

          (1)  Financial Statements:

               Report of Independent Public Accountants                     F-1
               Consolidated Balance Sheets as of December 31, 1999
                  and 1998                                                  F-2
               Consolidated Statements of Operations for the
                  years ended December 31, 1999, 1998, and 1997             F-4
               Consolidated Statements of Stockholders' Equity for
                  the years ended December 31, 1999, 1998 and 1997          F-5
               Consolidated Statements of Cash Flows for the years
                  ended December 31, 1999, 1998 and 1997                    F-6
               Notes to Consolidated Financial Statements                   F-8

          (2)  All schedules are omitted  because they are not applicable or the
               required  information is shown in the financial statements or the
               notes to the financial statements.

          (3)  Exhibits:

               3.1  Certificate  of  Incorporation  of the Company  filed May 7,
                    1982 and Amendment to  Certificate  of  Incorporation  filed
                    April 25, 1984 (1)

               3.2  Amendment to  Certificate of  Incorporation  filed August 4,
                    1987 (3)

               3.3  Amendment to Certificate of Incorporation  filed January 18,
                    1989 (4)

               3.4  Amendment to  Certificate  of  Incorporation  filed July 13,
                    1989 (5)
<PAGE>

               3.5  Amendment to  Certificate of  Incorporation  filed August 3,
                    1993 (11)

               3.6  Amendment to Certificate of Incorporation filed November 21,
                    1997 (22)

               3.7  By-Laws of the Company (1)

               3.8  Corporate Resolution  reflecting an Amendment to the By-Laws
                    of the Company adopted January 6, 1989 (3)

               3.9  Corporate Resolution  reflecting an Amendment to the By-Laws
                    of the Company adopted May 19, 1986
                            (5)

               4.1  Specimen of Common Stock Certificate (1)

               4.2  Form of Warrant Certificate granted to certain employees and
                    one Director of the Company in December 1990 and expiring in
                    December 2000 (8)

               4.3  Form of Promissory  Note for Employee  Stock  Purchase dated
                    July 21, 1992 (10)

               4.4  Form of  Subscription  Agreement for Employee Stock Purchase
                    dated July 21, 1992 (10)

               4.5  Form of Pledge for Employee  Stock  Purchase  dated July 21,
                    1992 (10)

               4.6  Form of Warrant  Certificate  granted under the 1994 Warrant
                    Plans (14)

               4.7  Form of Warrant  Certificate  granted under the 1995 Warrant
                    Reload Plan (16)

               4.8  Form of  Executive  Warrant  Certificate  granted to certain
                    employees of the Company in November
                            1997 and expiring in November 2002 (22)

               4.9  Form of Bonus Warrant  Certificate granted to an employee of
                    the Company in November  1997 and expiring in November  2002
                    (22)

               4.10 Form of Departure  Warrant  granted to certain  employees of
                    the Company in August 1997 (24)

               4.11 Form of  Employment  Warrant  granted to an  employee of the
                    Company in April 1998 and expiring in April 2008 (24)

               4.12 Form of  Employment  Warrant  granted to an  employee of the
                    Company in April 1998 and expiring in April 2008 (24)

               4.13 Amended and Restated 1998 Employee Stock Purchase Plan (27)

               10.1 Incentive Stock Option Plan of the Company (1)

               10.2 Non-Qualified Stock Option Plan of the Company (1)

               10.3 1993 Incentive Stock Option Plan of the Company (11)

               10.4 Amendment  No. 1 to the Seitel,  Inc. 1993  Incentive  Stock
                    Option Plan (15)

               10.5 Statement of Amendments  effective November 29, 1995, to the
                    Seitel, Inc. 1993 Incentive Stock Option Plan (18)

               10.6 Statement of  Amendments  effective  April 22, 1996,  to the
                    Seitel, Inc. 1993 Incentive Stock Option Plan (18)

               10.7 Amendment to the Seitel,  Inc. 1993  Incentive  Stock Option
                    Plan effective December 31, 1996 (20)
<PAGE>

               10.8 Amendment to Limit Options  Granted to a Single  Participant
                    under the Seitel, Inc. 1993 Incentive Stock Option Plan (22)

               10.9 Amendment  to  Increase  Number  of  Shares   Available  for
                    Granting Options under the Seitel, Inc. 1993 Incentive Stock
                    Option Plan (22)

              10.10 Non-Employee  Directors'  Stock  Option  Plan of the Company
                    (13)

              10.11 Amendment to the Seitel, Inc. Non-Employee  Directors' Stock
                    Option Plan effective December 31, 1996 (20)

              10.12 Seitel, Inc.  Non-Employee  Directors' Deferred Compensation
                    Plan (18)

              10.13  Non-Employee Directors' Retirement Plan (27)

              10.14 Seitel,  Inc.  Amended and Restated 1995 Warrant Reload Plan
                    (19)

              10.15 Amendment  to the Seitel,  Inc.  Amended and  Restated  1995
                    Warrant Reload Plan effective December 31, 1996 (20)

              10.16 Memorandum of Understanding between the Company and Triangle
                    Geophysical Company dated as of June 7, 1984 (1)

              10.17 Lease Agreement by and between the Company and  Commonwealth
                    Computer Advisors, Inc. (2)

              10.18 The Company's 401(k) Plan adopted January 1, 1998 (22)

              10.19 Executive  Services  Agreement  dated April 3, 1990  between
                    the Company and Helm Resources, Inc. (7)

              10.20 Employment   Agreement  effective  as  of  January  1,  1991
                    between the Company and Paul A. Frame, Jr.
                            (9)

              10.21 Amendment  to  Employment  Agreement  dated  effective as of
                    January 1, 1998  between the Company and Paul A. Frame,  Jr.
                    (22) 10.22 Employment  Agreement  effective as of January 1,
                    1991 between the Company and Horace A. Calvert (9)

              10.23 Amendment  to  Employment  Agreement  dated  effective as of
                    January 1, 1998  between the  Company and Horace A.  Calvert
                    (22)

              10.24 Employment   Agreement  effective  as  of  January  1,  1991
                    between the Company and Herbert M. Pearlman (9)

              10.25 Amendment  to  Employment  Agreement  dated  effective as of
                    January 1, 1998 between the Company and Herbert M.  Pearlman
                    (22)

              10.26 Employment   Agreement  effective  as  of  January  1,  1991
                    between the Company and David S. Lawi (9)

              10.27 Amendment  to  Employment  Agreement  dated  effective as of
                    January 1, 1998 between the Company and David S. Lawi (22)

              10.28 Employment   Agreement  effective  as  of  January  1,  1993
                    between the Company and Debra D. Valice (12)

              10.29 Amendment  to  Employment  Agreement  dated  effective as of
                    January 1, 1998 between the Company and Debra D. Valice (22)
<PAGE>

              10.30 Amendment  to  Employment  Agreement  dated  effective as of
                    June 10, 1998 between the Company and Debra D. Valice (23)

              10.31 Joint Venture  Agreement  dated April 5, 1990 by and between
                    Seitel  Offshore  Corp.,  a  wholly-owned  subsidiary of the
                    Company, and Digicon Data Inc., a wholly-owned subsidiary of
                    Digicon Geophysical Corp. (6)

              10.32 Revolving  Credit Agreement dated as of July 22, 1996, among
                    Seitel, Inc. and The First National Bank of Chicago (18)

              10.33 First Amendment to Seitel,  Inc.  Revolving Credit Agreement
                    dated as of August 30,  1996 among the Company and The First
                    National Bank of Chicago (19)

              10.34 Second  Amendment to Revolving  Credit Agreement dated as of
                    July 22, 1996,  among  Seitel,  Inc. and The First  National
                    Bank of Chicago (21)

              10.35 Ratable  Note in the  amount of  $20,000,000  among  Seitel,
                    Inc. and Bank One, Texas, N.A. dated as
                            of May 1, 1997 (21)

              10.36 Ratable  Note in the  amount of  $30,000,000  among  Seitel,
                    Inc. and The First National Bank of
                            Chicago dated as of May 1, 1997 (21)

              10.37 Third  Amendment to Revolving  Credit  Agreement dated as of
                    March 16, 1998 among  Seitel,  Inc.  and The First  National
                    Bank of Chicago (22)

              10.38 Ratable  Note in the  amount of  $40,000,000  among  Seitel,
                    Inc. and The First  National Bank of Chicago dated March 16,
                    1998 (22)

              10.39 Ratable  Note in the  amount of  $35,000,000  among  Seitel,
                    Inc. and Bank One,  Texas,  N.A.  dated as of March 16, 1998
                    (22)

              10.40 Amendment No. 4, dated as of August 10, 1999,  among Seitel,
                    Inc., a Delaware  Corporation;  the Lenders  executing  this
                    Agreement and the First  National Bank of Chicago,  as Agent
                    for the Lenders (27)

              10.41 Incentive Compensation Agreement (10)

              10.42 Terms  Agreement  dated July 28,  1994,  between the Company
                    and Bear, Stearns & Co., Inc. (13)

              10.43 Note  Purchase  Agreement  dated as of  December  28,  1995,
                    between the Company and the Series A Purchasers,  the Series
                    B Purchasers and the Series C Purchasers (17)

              10.44 First  Amendment  to Note  Purchase  Agreement  dated  as of
                    February 12, 1999 between the Company and Senior Noteholders
                    as of December 28, 1995 (26)

              10.45 Second  Amendment,  dated  as  of  July  14,  1999,  to  the
                    Separate Note Purchase Agreements,  dated as of December 28,
                    1995, among Seitel, Inc. and the Noteholders (27)

              10.46 Third  Amendment,  dated as of  November  22,  1999,  to the
                    Separate Note Purchase Agreements,  dated as of December 28,
                    1995, among Seitel, Inc. and the Noteholders*

              10.47 Revolving  Credit  Agreement  dated as of December 11, 1998,
                    between the Company and Suntrust Bank, Atlanta (25)

              10.48 Note  Purchase  Agreement  dated as of  February  12,  1999,
                    between the Company and the Series D Purchasers,  the Series
                    E Purchasers and the Series F Purchasers (25)

              10.49 First Amendment,  dated as of July 14, 1999, to the Separate
                    Note  Purchase  Agreements,  dated as of February  12, 1999,
                    among Seitel, Inc. and the Noteholders (27)
<PAGE>

              10.50 Second  Amendment,  dated as of November  22,  1999,  to the
                    Separate Note Purchase Agreements,  dated as of February 12,
                    1999, among Seitel, Inc. and the Noteholders *

              10.51 Revolving  Credit  Agreement,  dated as of November 9, 1999,
                    between Olympic Seismic Ltd. and Royal Bank of Canada *

              10.52 Amendment,  dated  as of  March 2,  2000,  to the  Revolving
                    Credit  Agreement,  dated as of  November  9, 1999,  between
                    Olympic Seismic Ltd. and Royal Bank of Canada *

               21.1 Subsidiaries of the Registrant *

               23.1 Consent of Arthur Andersen LLP *

               23.2 Consent of Garb Grubbs Harris & Associates, Inc.*

          (b)  Reports on Form 8-K filed during the quarter  ended  December 31,
               1999:

               NONE

               ------------------
               * Filed herewith


               (1)  Incorporated  by  reference  to the  Company's  Registration
                    Statement,  as amended,  on Form S-1,  No.  2-92572 as filed
                    with the  Securities  and Exchange  Commission  on August 3,
                    1984.

               (2)  Incorporated by reference to Post-Effective  Amendment No. 2
                    to the  Company's  Registration  Statement on Form S-2, File
                    No.  33-32838,  as filed with the  Securities  and  Exchange
                    Commission on October 10, 1991.

               (3)  Incorporated  by  reference  to the  Company's  Registration
                    Statement,  as amended,  on Form S-2, No.  33-21300 as filed
                    with the  Securities  and Exchange  Commission  on April 18,
                    1988.

               (4)  Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1988.

               (5)  Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1989.

               (6)  Incorporated  by reference to the Company's  Form 8 amending
                    the Company's  Annual Report on Form 10-K for the year ended
                    December 31, 1989.

               (7)  Incorporated  by  reference  to the  Company's  Registration
                    Statement,  as amended,  on Form S-2, No.  33-34217 as filed
                    with the Commission on April 6, 1990.

               (8)  Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1990.

               (9)  Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1991.

               (10) Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1992.

               (11) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1993.

               (12) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended September 30, 1993.
<PAGE>

               (13) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1994.

               (14) Incorporated  by  reference  to the  Company's  Registration
                    Statement  on Form  S-8,  No.  33-89934  as  filed  with the
                    Securities and Exchange Commission on March 2, 1995.

               (15) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1995.

               (16) Incorporated  by  reference  to the  Company's  Registration
                    Statement  on Form  S-8,  No.  333-01271  as filed  with the
                    Securities and Exchange Commission on February 28, 1996.

               (17) Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1995.

               (18) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1996.

               (19) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended September 30, 1996.

               (20) Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1996.

               (21) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended March 31, 1997.

               (22) Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1997.

               (23) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended June 30, 1998.

               (24) Incorporated  by  reference  to the  Company's  Registration
                    Statement  on Form  S-8,  No.  333-64557  as filed  with the
                    Securities and Exchange Commission on September 29, 1999.

               (25) Incorporated by reference to the Company's  Annual Report on
                    Form 10-K for the year ended December 31, 1998.

               (26) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended March 31, 1999.

               (27) Incorporated by reference to the Company's Form 10-Q for the
                    quarter ended September 30, 1999.



<PAGE>









                                   SIGNATURES

Pursuant to the  requirements  of Section 13 or 15(d) of the  Securities  Act of
1934,  the  Registrant  has duly caused this report on Form 10-K to be signed on
its behalf by the undersigned, thereunto duly authorized.


                                 SEITEL, INC.


                                     By: /s/ Paul A. Frame
                                         ---------------------------------------
                                             Paul A. Frame
                                             President

                                   Date:     March   29,  2000

Pursuant to the  requirements of the Securities Act of 1934, this Report on Form
10-K has been signed below by the following persons in the capacities and on the
date indicated.

       Signature                        Title                          Date
       ---------                        -----                          ----

/s/  Herbert M. Pearlman   Chairman of the Board of Directors   March  29,  2000
- -------------------------
     Herbert M. Pearlman

/s/  Paul A. Frame         President and Chief Executive        March  29,  2000
- -------------------------  Officer, Director
     Paul A. Frame

/s/  Horace A. Calvert     Executive Vice President and         March  29,  2000
- -------------------------  Chief Operating Officer,
     Horace A. Calvert     Director

/s/  Debra D. Valice       Executive Vice President-Finance,    March  29,  2000
- -------------------------  Chief Financial Officer,
     Debra D. Valice       Secretary and Treasurer, Director

/s/  David S. Lawi         Director                             March  29,  2000
- -------------------------
     David S. Lawi

/s/  Walter M. Craig, Jr.  Director                             March  29,  2000
- -------------------------
     Walter M. Craig, Jr.

/s/  William Lerner        Director                             March  29,  2000
- -------------------------
     William Lerner

/s/  John Stieglitz        Director                             March  29,  2000
- -------------------------
     John Stieglitz

/s/  Fred S. Zeidman       Director                             March  29,  2000
- -------------------------
     Fred S. Zeidman

/s/  Marcia H. Kendrick    Chief Accounting Officer             March  29,  2000
- -------------------------
     Marcia H. Kendrick

<PAGE>







                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To Seitel, Inc.:

We have audited the accompanying  consolidated balance sheets of Seitel, Inc. (a
Delaware corporation) and subsidiaries as of December 31, 1999 and 1998, and the
related  consolidated  statements of operations,  stockholders'  equity and cash
flows for each of the three years in the period ended  December 31, 1999.  These
financial  statements are the  responsibility of the Company's  management.  Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material respects,  the financial position of Seitel,  Inc. and subsidiaries
as of December 31, 1999 and 1998, and the results of their  operations and their
cash flows for each of the three years in the period ended December 31, 1999, in
conformity with accounting principles generally accepted in the United States.




ARTHUR ANDERSEN LLP


Houston, Texas
February 25, 2000





















                                       F-1


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In thousands)



<TABLE>
<CAPTION>
                                                                                   December 31,
                                                                          -----------------------------
                                                                             1999               1998
                                                                          ---------           ---------
<S>                                                                       <C>                 <C>
ASSETS

Cash and equivalents                                                      $   5,188           $   3,161
Receivables
  Trade, less allowance for doubtful accounts of $1,183 and $936
    at December 31, 1999 and 1998, respectively                              62,240              59,244
  Notes and other                                                               436                 581

Data bank                                                                   629,380             513,037
  Less:  Accumulated amortization                                          (299,495)           (250,087)
                                                                          ---------           ---------
    Net data bank                                                           329,885             262,950

Property and equipment, at cost:
  Oil and gas properties, full-cost method of accounting,
    including $54,426 and $53,458 not being amortized at
    December 31, 1999 and 1998, respectively                                204,858             194,576
  Furniture, fixtures and other                                               7,343               6,237
                                                                          ---------           ---------
                                                                            212,201             200,813
  Less:  Accumulated depreciation, depletion and amortization               (59,614)            (49,542)
                                                                          ---------           ---------
    Net property and equipment                                              152,587             151,271

Investment in marketable securities                                             993                   -
Investment in affiliate                                                           -              15,544
Prepaid expenses, deferred charges and other assets                           4,590               3,016
                                                                          ---------           ---------

TOTAL ASSETS                                                              $ 555,919           $ 495,767
                                                                          =========           =========
</TABLE>






















                   The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-2


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS -- continued
(In thousands, except share and per share amounts)

<TABLE>
<CAPTION>
                                                                                    December 31,
                                                                            -----------------------------
                                                                              1999                1998
                                                                            ---------           ---------
<S>                                                                         <C>                 <C>
LIABILITIES AND STOCKHOLDERS' EQUITY

   Accounts payable                                                         $  35,497           $  58,956
   Accrued liabilities                                                         11,302               6,882
   Employee compensation payable                                                2,986               5,717
   Income taxes payable                                                           373               1,056
   Debt
     Senior Notes                                                             184,667              65,000
     Line of credit                                                            40,500              85,500
     Term loans                                                                    33                 172
   Obligations under capital leases                                                23                  18
   Contingent payables                                                            274                 274
   Deferred income taxes                                                       32,778              28,039
   Deferred revenue                                                             4,462               6,566
                                                                            ---------           ---------
 Total Liabilities                                                            312,895             258,180
                                                                            ---------           ---------

CONTINGENCIES AND COMMITMENTS

STOCKHOLDERS' EQUITY

   Preferred stock, par value $.01 per share; authorized 5,000,000
     shares; none issued                                                            -                   -
   Common stock, par value $.01 per share; authorized
     50,000,000 shares; issued and outstanding 24,285,795 and
     23,804,508 at December 31, 1999 and 1998, respectively                       243                 238
   Additional paid-in capital                                                 147,549             141,826
   Retained earnings                                                          110,117             107,102
   Treasury stock, 680,518 and 175,818 shares at cost at
     December 31,1999 and 1998, respectively                                   (6,279)             (2,977)
   Notes receivable from officers and employees                                (6,915)             (8,651)
   Accumulated other comprehensive income (loss)                               (1,691)                 49
                                                                            ---------           ---------
TOTAL STOCKHOLDERS' EQUITY                                                    243,024             237,587
                                                                            ---------           ---------

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                                  $ 555,919           $ 495,767
                                                                            =========           =========
</TABLE>

















                  The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-3


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share amounts)
<TABLE>
<CAPTION>
                                                                                       Year Ended December 31,
                                                                         -------------------------------------------------
                                                                           1999                1998                 1997
                                                                         ---------           ---------           ---------

<S>                                                                      <C>                 <C>                 <C>
REVENUE                                                                  $ 128,707           $ 144,857           $ 127,556

EXPENSES
   Depreciation, depletion and amortization                                 59,624              69,890              49,679
   Impairment of oil and gas properties                                          -                   -               9,560
   Cost of sales                                                             5,016               4,874              17,953
   Selling, general and administrative expenses                             28,587              26,599              23,043
                                                                         ---------           ---------           ---------
                                                                            93,227             101,363             100,235
                                                                         ---------           ---------           ---------

INCOME FROM OPERATIONS                                                      35,480              43,494              27,321

Interest expense                                                           (11,791)             (5,963)             (4,609)
Interest income                                                                714                 423               1,055
Equity in earnings (loss) of affiliate                                         (91)                222                 146
Impairment due to dividend distribution of
   affiliate stock                                                          (7,794)                  -                   -
Gain on sale of subsidiary stock                                                 -                   -              18,449
Increase (decrease) in underlying equity of affiliate                            -                (193)             10,750
Extinguishment of volumetric production payment                                  -                   -              (4,133)
                                                                         ---------           ---------           ---------

Income before provision for income taxes                                    16,518              37,983              48,979

Provision for income taxes                                                   7,138              13,623              17,422
                                                                         ---------           ---------           ---------

NET INCOME                                                               $   9,380           $  24,360           $  31,557
                                                                         =========           =========           =========

Earnings per share:
   Basic                                                                 $     .39           $    1.07           $    1.48
   Diluted                                                               $     .39           $    1.05           $    1.43

Weighted average number of common and common equivalent shares:
   Basic                                                                    23,863              22,720              21,380
                                                                         =========           =========           =========
   Diluted                                                                  24,063              23,124              22,050
                                                                         =========           =========           =========
</TABLE>



















                  The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-4


<PAGE>



SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(In thousands, except share amounts)
<TABLE>
<CAPTION>

                                                                                                       Notes
                                                                                                    Receivable   Accumulated
                             Compre-      Common Stock     Additional             Treasury Stock       from         Other
                             hensive   ------------------   Paid-In   Retained  -----------------   Officers &  Comprehensive
                              Income    Shares     Amount   Capital   Earnings   Shares    Amount    Employees     Income
                             --------  ---------   ------   --------   -------  --------   ------    --------    ----------

<S>                        <C>         <C>         <C>      <C>        <C>      <C>        <C>       <C>         <C>
Balance, December 31, 1996             10,362,102 $   104   $105,544  $ 51,185      (409)$     (4) $   (1,205) $         17
   Net proceeds from
     issuance of common stock             912,472       8     17,318         -        -         -           -             -
   Two-for-one stock split             11,273,834     113       (113)        -      (409)       -           -             -
   Tax reduction from
     exercise
     of stock options                           -       -      5,657         -        -         -           -             -
   Treasury stock purchased                     -       -          -         -  (175,000)  (2,973)          -             -
   Payments received on
     notes receivable from
     officers and employees                     -       -          -         -        -         -          96             -
   Net income              $   31,557           -       -          -    31,557        -         -           -             -
   Foreign currency
     translation
     adjustments                  (31)          -       -          -         -        -         -           -           (31)
                             --------
   Comprehensive income    $   31,526
                             ========  ----------  ------   --------   -------  --------   ------    --------    ----------

Balance, December 31, 1997             22,548,408     225    128,406    82,742  (175,818)  (2,977)     (1,109)          (14)
   Net proceeds from
     issuance
     of common stock                      106,067       1        983         -        -         -           -             -
   Tax reduction from
     exercise
     of stock options                           -       -        344         -        -         -           -             -
   Sale of common stock to
     officers and employees               794,300       8      8,183         -        -         -      (8,191)            -
   Acquisition of oil and
     gas properties                       355,733       4      3,910         -        -         -           -             -
   Payments received on
     notes receivable from
     officers and employees                     -       -          -         -        -         -         649             -
   Net income              $   24,360           -       -          -    24,360        -         -           -             -
   Foreign currency
     translation
     adjustments                   63           -       -          -         -        -         -           -            63
                             --------
   Comprehensive income    $   24,423
                             ========  ----------  ------   --------   -------  --------   ------    --------    ----------

Balance, December 31, 1998             23,804,508     238    141,826   107,102  (175,818)  (2,977)     (8,651)           49
   Net proceeds from
     issuance
     of common stock                      481,287       5      5,126         -        -         -           -             -
   Tax reduction from
     exercise
     of stock options                           -       -        597         -        -         -           -             -
   Treasury stock purchased                     -       -          -         -  (504,700)  (3,302)          -             -
   Payments received on
     notes receivable from
     officers and employees                     -       -          -         -        -         -       1,736             -
   Distribution of Eagle
     Geophysical, Inc.
     shares                                     -       -          -    (6,365)       -         -           -             -
   Net income              $    9,380           -       -          -     9,380        -         -           -             -
   Foreign currency
     translation
     adjustments                 (695)          -       -          -         -        -         -           -          (695)
   Unrealized loss on
     marketable
     securities net of
     income
     tax benefit of $526       (1,045)          -       -          -         -        -         -           -        (1,045)
                             --------
   Comprehensive income    $    7,640
                             ========  ----------  ------   --------   -------  --------   ------    --------    ----------

Balance, December 31, 1999             24,285,795 $   243   $147,549  $110,117  (680,518)$ (6,279) $   (6,915) $     (1,691)
                                       ========== =======   ========   =======  ========   ======    ========    ==========
</TABLE>

                  The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-5


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
<TABLE>
<CAPTION>
                                                                                 Year Ended December 31,
                                                                         ------------------------------------------
                                                                            1999            1998            1997
                                                                         ----------       ---------      ----------
<S>                                                                   <C>               <C>            <C>
Cash flows from operating activities:
  Cash received from customers                                        $     117,085     $   128,747    $    123,795
  Cash paid to suppliers and employees                                      (32,534)        (22,549)        (41,652)
  Interest paid                                                              (8,926)         (5,792)         (4,584)
  Interest received                                                             623             398             955
  Income taxes paid                                                          (1,754)         (3,311)         (2,353)
                                                                         ----------       ---------      ----------
     Net cash provided by operating activities                               74,494          97,493          76,161
                                                                         ----------       ---------      ----------

Cash flows from investing activities:
  Cash invested in seismic data                                            (128,194)       (119,267)        (76,616)
  Cash invested in oil and gas properties                                   (27,857)        (40,929)        (55,480)
  Cash paid to acquire property and equipment                                (1,073)           (839)         (8,772)
  Net proceeds from sale of oil and gas properties                           11,657               -               -
  Cash from disposal of property and equipment                                    -              17              28
  Proceeds from sale of stock of subsidiary                                       -               -          29,723
  Costs related to sale of stock of subsidiary                                    -               -          (5,435)
  Cash received from affiliate for advances                                       -               -           2,094
  Collections on loans made                                                       -               -           5,415
  Investment in marketable securities                                        (3,043)              -               -
  Deferred offering costs                                                       (80)              -               -
                                                                         ----------       ---------      ----------
     Net cash used in investing activities                                 (148,590)       (161,018)       (109,043)
                                                                         ----------       ---------      ----------

Cash flows from financing activities:
  Borrowings under line of credit agreement                                  91,314         108,812          63,500
  Principal payments under line of credit
     agreement                                                             (136,314)        (38,312)        (48,500)
  Borrowings under term loans                                                     -               -           7,925
  Principal payments on term loans                                             (139)           (305)         (2,301)
  Principal payments under capital lease
     obligations                                                                (28)            (71)           (828)
  Proceeds from issuance of senior notes                                    138,000               -               -
  Principal payments under senior notes                                     (18,333)        (10,000)              -
  Proceeds from issuance of common stock                                      5,167           1,063          17,361
  Costs of debt and equity transactions                                      (1,571)            (79)            (35)
  Repurchase of common stock                                                 (3,302)              -          (2,735)
  Payments on notes receivable from officers
     and employees                                                            1,736             649              96
                                                                         ----------       ---------      ----------
     Net cash provided by financing activities                               76,530          61,757          34,483
                                                                         ----------       ---------      ----------

Effect of exchange rate changes                                                (407)             48             (60)
                                                                         ----------       ---------      ----------

Net increase (decrease) in cash and equivalents                               2,027          (1,720)          1,541

Cash and equivalents at beginning of period                                   3,161           4,881           3,340
                                                                         ----------       ---------      ----------

Cash and equivalents at end of period                                 $       5,188     $     3,161    $      4,881
                                                                         ==========       =========      ==========
</TABLE>







                  The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-6


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS--continued
(In thousands)
<TABLE>
<CAPTION>
                                                                                     Year Ended December 31,
                                                                         ---------------------------------------------
                                                                            1999              1998             1997
                                                                         -----------       ----------       ----------

<S>                                                                   <C>                <C>              <C>
Reconciliation of net income to net cash provided by operating activities:

Net income                                                            $        9,380     $     24,360     $     31,557
Adjustments to reconcile net income to net cash
   provided by operating activities:
   Gain on sale of subsidiary stock                                                -                -          (18,449)
   Decrease (increase) in underlying equity of affiliate                           -              193          (10,750)
   Extinguishment of volumetric production payment                                 -                -            4,133
   Impairment due to dividend distribution of affiliate
      stock                                                                    7,794                -                -
   Equity in loss (earnings) of affiliate                                         91             (222)            (146)
   Depreciation, depletion and amortization                                   59,624           69,890           62,293
   Deferred income tax provision                                               5,501            9,989            8,257
   Non-cash sales                                                             (6,522)          (1,140)               -
   Gain on sale of property and equipment                                          -              (32)             (16)
   Amortization of deferred revenue                                                -                -           (4,079)
   Increase in receivables, net                                               (2,851)         (14,706)          (3,544)
   Decrease (increase) in other assets                                           402             (314)            (849)
   Discount on note receivable                                                     -                -             (198)
   Increase in accounts payable and other liabilities                          1,075            9,475            7,952
                                                                         -----------       ----------       ----------
     Total adjustments                                                        65,114           73,133           44,604
                                                                         -----------       ----------       ----------

Net cash provided by operating activities                              $      74,494     $     97,493    $      76,161
                                                                         ===========       ==========       ==========
</TABLE>





























                  The accompanying notes are an integral part
                   of these consolidated financial statements.
                                       F-7


<PAGE>


SEITEL, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
DECEMBER 31, 1999

NOTE A--SIGNIFICANT ACCOUNTING POLICIES

         Nature  of  Operations:  Seitel,  Inc.  (the  "Company")  is a  leading
diversified  energy  company  providing  seismic  data and  related  geophysical
services to the oil and gas industry and directly  participating in exploration,
development and ownership of natural gas and crude oil reserves. The majority of
the  Company's  seismic  surveys  cover onshore and offshore the U.S. Gulf Coast
region.  The  Company's  oil and gas  exploration,  development  and  production
activities are on properties  located  primarily in the onshore Gulf Coast areas
of  Texas,  Louisiana,  Alabama  and  Mississippi,  as  well as  California  and
Arkansas.

         In the course of its operations, the Company is subject to certain risk
factors,  including,  but not limited to, the following:  competition,  industry
conditions, volatility of oil and gas prices, operating risks, dependence of key
personnel,   geographic   concentration   of  operations  and  compliance   with
governmental regulations.

         Use of  Estimates:  The  preparation  of these  consolidated  financial
statements in conformity with accounting  principles  generally  accepted in the
United States requires the use of certain estimates by management in determining
the Company's assets,  liabilities,  revenues and expenses. Actual results could
differ from estimates.  Data bank  amortization is determined using estimates of
ultimate  revenues from  licensing of the seismic  data.  Refer to the data bank
discussion  below  for  additional   information  on  data  bank   amortization.
Depreciation,  depletion  and  amortization  of oil and gas  properties  and the
impairment of oil and gas properties are  determined  using  estimates of proved
oil and gas reserves and the present  value of estimated  cash flows  therefrom.
There are numerous  uncertainties  in estimating the quantity of proved reserves
and in  projecting  the future  rates of  production  and timing of  development
expenditures.  Refer  to Note S,  "Supplemental  Oil  and Gas  Information"  for
additional  information  regarding the process of estimating  proved oil and gas
reserve quantities and related values.

         Basis  of  Presentation:   The  accompanying   consolidated   financial
statements   include  the  accounts  of  Seitel,   Inc.,  the  accounts  of  its
wholly-owned subsidiaries and the Company's pro rata share of its investments in
joint ventures. Investments in less than majority owned companies over which the
Company has the ability to exercise  significant  influence  are  accounted  for
using the equity method.  All material  intercompany  accounts and  transactions
have been eliminated in consolidation.  Certain reclassifications have been made
to the  amounts  in the prior  years'  financial  statements  to  conform to the
current year's presentation.

         The Company presents its consolidated balance sheets on an unclassified
basis.  Because the portion of seismic  data  acquisition  costs to be amortized
during the next year cannot be classified as a current asset, and classification
of all of these costs as noncurrent would be misleading to the reader because it
would not indicate the level of assets expected to be converted into cash in the
next year, the Company  believes that the use of an  unclassified  balance sheet
results in improved financial reporting.

         Data Bank: Costs incurred in the creation of proprietary  seismic data,
including  the direct and  incremental  costs of  Company  personnel  engaged in
project management and design, are capitalized.  Substantially all (greater than
88%) of the costs  incurred  to develop  the  Company's  data bank have been for
programs created by the Company.  The Company uses the income forecast method to
amortize  the costs of  seismic  data  programs  it  creates.  Under the  income
forecast method, seismic data costs are amortized in the proportion that revenue
for a period relates to management's  estimate of ultimate revenues.  Management
estimates  that 90% of the costs  incurred in the  creation  of seismic  data is
amortized  within  five  years of such data  becoming  available  for resale for
two-dimensional  seismic  data and  within  seven  years of such  data  becoming
available for resale for  three-dimensional  seismic data. If anticipated  sales
fall below expectations, amortization is accelerated. The Company also purchases
existing  seismic data  programs  from other  companies.  The costs of purchased
seismic data programs are generally  amortized on a straight-line basis over ten
years;  however, the costs of a significant purchase (greater than 5% of the net
book value of the data  bank),  are  amortized  using the  greater of the income
forecast  method or ten-year  straight-line  method.  As of December  31,  1999,
almost all (97%) of the net costs of the Company's  data bank are expected to be
fully  amortized  within 10 years  from when such  data  becomes  available  for
resale. On a periodic basis, the carrying value of seismic data is compared to



                                       F-8


<PAGE>


its estimated  future revenue and, if  appropriate,  is reduced to its estimated
net realizable  value. Net data bank at December 31, 1999 and 1998 was comprised
of the following (in thousands):
<TABLE>
<CAPTION>

                                                          December 31,
                                                 ------------------------------
                                                     1999              1998
                                                 ------------      ------------
<S>                                            <C>               <C>
2D data created by the Company                 $       11,475    $       14,269
3D data created by the Company                        279,577           230,163
Data purchased by the Company                          38,833            18,518
                                                 ------------      ------------
Net data bank                                  $      329,885    $      262,950
                                                 ============      ============
</TABLE>

         Oil  and  Gas  Properties:  The  Company  accounts  for its oil and gas
exploration and production  activities using the full-cost method of accounting.
Under this  method,  all costs  associated  with  acquisition,  exploration  and
development  of oil  and  gas  reserves  are  capitalized,  including  salaries,
benefits and other internal costs,  directly  attributable to these  activities.
Costs associated with production and general  corporate  activities are expensed
in the period  incurred.  For the years ended December 31, 1999,  1998 and 1997,
exploration and development related overhead costs of $1,938,000, $1,795,000 and
$1,431,000,  respectively,  have  been  capitalized  to oil and gas  properties.
Interest  costs  related to unproved  properties  and certain  properties  under
development are also capitalized to oil and gas properties.  For the years ended
December 31, 1999, 1998 and 1997,  interest costs of $3,101,000,  $2,486,000 and
$2,105,000, respectively, have been capitalized to oil and gas properties.

         No  gains  or  losses  are  recognized  upon  the  sale  of oil and gas
properties  unless a  significant  portion of the  Company's  proved oil and gas
reserves are sold (generally  greater than 25 percent).  Instead,  proceeds from
the  sale  of oil  and  gas  properties  are  accounted  for as a  reduction  of
capitalized costs. In July 1999, the Company sold its 18.75% working interest in
11 oil and gas wells,  one salt water  disposal  well and  approximately  16,000
acres of leasehold and options to lease for approximately $11.7 million,  net of
costs.

         Depreciation, depletion and amortization ("DD&A") expense is calculated
quarterly  using  the  units-of-production  method  based  upon  production  and
estimates  of  proved  reserves.  Estimated  future  development  costs and site
restoration,  dismantlement  and abandonment  costs, net of salvage values,  are
included  in the  amortization  base.  Capitalized  costs  associated  with  the
acquisition and evaluation of unproved  properties and certain  properties under
development  are not  included  in the  amortization  base until the  properties
associated with these costs are evaluated.

         Capitalized  costs of oil and gas properties,  net of accumulated  DD&A
and deferred  income taxes,  are limited to the present value,  discounted at 10
percent,  of future net cash flows from  estimated  proved oil and gas reserves,
based on current  economic and operating  conditions,  plus the lower of cost or
fair value of unproved  properties,  adjusted for the effects of related  income
taxes.  If  capitalized  costs  exceed  this  limit,  the  excess is  charged to
impairment of oil and gas properties.  Based on the Company's  December 31, 1997
estimated  proved reserves  valued at March 18, 1998 market prices,  the Company
recorded  a  non-cash  impairment  of  oil  and  gas  properties  of  $9,560,000
($6,160,000 net of taxes) in 1997. At March 31, 1999, the Company's  capitalized
costs  of oil and gas  properties  exceeded  the  limitation  thereon  based  on
quarter-end oil and gas prices;  however, an impairment was not recorded at that
time because price increases in April 1999 indicated that capitalized costs were
not  impaired.  Given the  volatility  of oil and gas prices,  it is  reasonably
possible  that the Company's  estimate of discounted  future net cash flows from
proved oil and gas reserves could change in the near term. If oil and gas prices
decline significantly in the future, even if only for a short period of time, it
is possible that additional impairments of oil and gas properties could occur.

         Substantially   all  of  the  Company's   exploration  and  development
activities are conducted jointly with others and, accordingly, the Company's oil
and gas  property  balance  reflects  only its  proportionate  interest  in such
activities.

         Other  Property  and  Equipment:  Depreciation  of other  property  and
equipment is calculated using the straight-line method over the estimated useful
lives of the assets of three to five years.

         Marketable Equity  Securities:  The Company accounts for its marketable
equity securities in accordance with Statement of Financial Accounting Standards
("SFAS")  No.  115,  "Accounting  for  Certain  Investments  in Debt and  Equity
Securities." Management determines the appropriate  classification of marketable
securities  at the time of purchase and  reevaluates  such  designation  at each
balance sheet date.  The Company's  marketable  securities  are  categorized  as
available-for-sale and are carried at fair value, with unrealized holding
                                       F-9
<PAGE>

gains and losses,  net of taxes,  reflected in accumulated  other  comprehensive
income (loss) included in stockholders'  equity until realized.  For the purpose
of  computing  realized  gains and  losses,  cost is  identified  on a  specific
identification basis.

         At December 31, 1999,  unrealized losses on marketable  securities were
$1,571,000.  The  deferred tax benefit on this loss was $526,000 at December 31,
1999, resulting in a net charge of $1,045,000 to other comprehensive income.

         Debt Issue  Costs:  Debt issue costs  related to the  Company's  Senior
Notes and line of credit are included in prepaid expenses,  deferred charges and
other assets in the  consolidated  balance sheet.  Such costs are amortized over
the  scheduled  maturities  of the  debt.  As of  December  31,  1999 and  1998,
unamortized debt issue costs were $1,762,000 and $532,000, respectively.

         Income  Taxes:  The  Company  and  all  of  its  U.S. subsidiaries file
a  consolidated  federal  income tax return.  The Company  does not provide U.S.
taxes on the undistributed  earnings of its foreign  subsidiaries whose earnings
are intended to be permanently reinvested in foreign operations. At December 31,
1999,  accumulated  net  earnings  of  non-U.S.  subsidiaries  for which no U.S.
federal taxes have been provided were $6,609,000.

         Income Recognition:  Revenue from seismic data licensing  agreements is
recognized when each seismic data program is available for use by the licensees,
and is presented  net of revenue  shared with other  entities.  Revenue from the
acquisition  of seismic data for  non-affiliated  parties is  recognized  on the
percentage-of-completion method based on the work effort completed compared with
the total work effort  estimated for the  contract.  These  contracts  generally
provide that the customer  accepts work  completed  throughout  the  performance
period  and owes the  Company,  based on  pricing  provisions,  amounts  for job
completion,  measured  in terms of  performance  progress.  Revenue  received in
advance of being earned is deferred until earned.

         In certain cases,  the Company grants seismic licenses to third parties
for data to be used in  their  operations  (not  for  resale)  in  exchange  for
exclusive ownership of seismic data from the third party. The Company recognizes
revenue  for the  licenses  granted  and  records a data  library  asset for the
seismic data  acquired.  These  transactions  are accounted for as  non-monetary
exchanges  and are valued at the fair  market  value of such  licenses  based on
values  realized in cash  transactions  with other  parties for similar  seismic
data.

         Cost of Sales:  Cost of sales consists of expenses  associated with oil
and gas  production,  seismic  resale  support  services and the  acquisition of
seismic data for  non-affiliated  parties  (until August 11, 1997).  The cost of
acquiring seismic data for  non-affiliated  parties includes all direct material
and labor costs and indirect costs related to the acquisition  such as supplies,
tools, repairs and depreciation.

         Foreign  Currency   Translation:   For  subsidiaries  whose  functional
currency  is  deemed  to be other  than the U.S.  dollar,  asset  and  liability
accounts are  translated at period-end  exchange  rates and revenue and expenses
are  translated at the current  exchange rates as of the dates on which they are
recognized.  Resulting translation adjustments are included in accumulated other
comprehensive  income  (loss)  in  stockholders'  equity.  Any  gains or  losses
realized on transactions  or monetary assets or liabilities in currencies  other
than the functional  currency are included in net income in the current  period.
Transaction  gains (losses)  totaling  $455,000,  $108,000 and $(87,000) for the
years ended  December 31,  1999,  1998 and 1997,  respectively,  are included in
selling general and  administrative  expenses in the consolidated  statements of
operations.

         Use of  Derivatives:  The Company has a price risk  management  program
that utilizes derivative financial  instruments,  principally natural gas swaps,
to reduce the price risks  associated  with  fluctuations in natural gas prices.
Such contracts usually are placed with major derivative dealers that the Company
believes are minimal  credit  risks.  The Company  accounts  for its  derivative
financial instruments using the hedge (or deferral) method of accounting.  Under
this method,  realized gains and losses from the Company's price risk management
activities are recognized in oil and gas production revenues when the associated
production  occurs and the resulting  cash flows are reported as cash flows from
operating activities.  Gains and losses on derivative financial instruments that
are closed before the hedged production occurs are deferred until the production
month originally hedged.





                                      F-10
<PAGE>

         In June 1998, the Financial  Accounting Standards Board ("FASB") issued
SFAS No. 133,  "Accounting for Derivative  Instruments and Hedging  Activities."
SFAS No.  133,  as amended by SFAS No. 137, is required to be adopted on January
1, 2001,  although  earlier  adoption is permitted.  The  statement  establishes
accounting and reporting  standards  requiring that every derivative  instrument
(including  certain  derivative  instruments  embedded  in other  contracts)  be
recorded in the balance  sheet as either an asset or  liability  measured at its
fair value. The statement  requires that changes in the derivative's  fair value
be recognized  currently in earnings unless specific hedge  accounting  criteria
are met. Special  accounting for qualifying  hedges allows a derivative's  gains
and losses to offset related results on the hedged item in the income statement,
and  requires  that a company  formally  document,  designate,  and  assess  the
effectiveness  of  transactions  that receive hedge  accounting  treatment.  The
Company has not yet  quantified  the impact of adopting  SFAS No. 133.  However,
management  does not  believe  that the  adoption  of SFAS No.  133 will  have a
material impact on the Company's financial position or results of operations.

         Earnings per Share:  In  accordance  with SFAS No. 128,  "Earnings  Per
Share,"  basic  earnings  per share is computed  based on the  weighted  average
shares of common  stock  outstanding  during the periods.  Diluted  earnings per
share is computed based on the weighted  average shares of common stock plus the
assumed  issuance  of common  stock  for all  potentially  dilutive  securities.
Earnings per share  computations  to reconcile  basic and diluted net income for
the years 1999, 1998 and 1997 consist of the following (in thousands  except per
share amounts):
<TABLE>
<CAPTION>

                                                                    Year Ended December 31,
                                                         --------------------------------------------
                                                            1999             1998             1997
                                                         ----------       ----------       ----------

<S>                                                    <C>              <C>              <C>
Net income                                             $      9,380     $     24,360     $     31,557
                                                         ==========       ==========       ==========

Basic weighted average shares                                23,863           22,720           21,380
Effect of dilutive securities: (1)<F1>
   Options and warrants                                         200              404              670
                                                         ----------       ----------       ----------
Diluted weighted average shares                              24,063           23,124           22,050
                                                         ==========       ==========       ==========
Per share net income:
   Basic                                               $        .39     $       1.07     $       1.48
   Diluted                                             $        .39     $       1.05     $       1.43
- -------------------
<FN>
(1)<F1>  A weighted  average  year-to-date  number of options  and  warrants  to
         purchase  5,517,000,  187,000 and 1,007,000 shares of common stock were
         outstanding  during  1999,  1998 and 1997,  respectively,  but were not
         included in the  computation  of diluted  per share net income  because
         their exercise prices were greater than the average market price of the
         common shares.
</FN>
</TABLE>

         Stock-Based Compensation: The Company accounts for employee stock-based
compensation   using  the  intrinsic  value  method   prescribed  by  Accounting
Principles  Board  ("APB")  Opinion  No.  25,  "Accounting  for Stock  Issued to
Employees."  Reference is made to Note H, "Stock  Options and  Warrants,"  for a
summary of the pro forma  effect of SFAS No. 123,  "Accounting  for  Stock-Based
Compensation" on the Company's results of operations in 1999, 1998 and 1997.

         Fair Value of Financial  Instruments:  SFAS No. 107, "Disclosures about
Fair Value of Financial  Instruments,"  requires disclosure of the fair value of
certain  financial  instruments.  The  estimated  fair value  amounts  have been
determined   by  the  Company   using   available   market  data  and  valuation
methodologies. The book values of cash and equivalents, receivables and accounts
payable  approximate their fair value as of December 31, 1999 and 1998,  because
of the short-term maturity of these instruments.  Based upon the rates available
to the  Company,  the  fair  value  of the  Senior  Notes  and  the  term  loans
approximates  $182,656,000  and  $65,149,000  as of December  31, 1999 and 1998,
respectively.  The  book  value  of  the  Company's  revolving  line  of  credit
approximates fair value due to the variable interest rates under the line.







                                      F-11
<PAGE>

         Impairment  of  Long-Lived  Assets:  In  accordance  with SFAS No. 121,
"Accounting for Impairment of Long-Lived  Assets and for Long-Lived Assets to be
Disposed Of," the Company  reviews  long-lived  assets for  impairment  whenever
events or changes in circumstances  indicate that the carrying value of an asset
may not be  realizable.  If an  evaluation  is required,  the  estimated  future
undiscounted  cash flows  associated  with the asset are compared to the asset's
carrying  amount to determine if an impairment  of such asset is necessary.  The
effect of any  impairment  would be to expense the  difference  between the fair
value of such  asset and its  carrying  value.  There  were no such  impairments
recorded under SFAS No. 121 in 1999, 1998 or 1997.

         Accounting  For Sales of Stock By  Subsidiary  Companies:  The  Company
recognizes  gains or losses on sales of stock by its  subsidiary  companies when
such sales are not made as part of a larger  plan of  corporate  reorganization.
Such gains or losses are based upon the difference between the book value of the
Company's  investment  in the  subsidiary  immediately  after  the  sale and the
historical book value of the Company's investment immediately prior to the sale.

         Comprehensive  Income:  In  accordance  with SFAS No.  130,  "Reporting
Comprehensive  Income,"  the Company has  reported  comprehensive  income in the
consolidated  statements  of  stockholders'  equity  for the three  years  ended
December  31,  1999.  Accumulated  other  comprehensive  income for the  Company
consists  of foreign  currency  translation  adjustments  and  unrealized  gains
(losses) on marketable securities.  Cumulative  translation  adjustments are not
adjusted for income taxes as they relate to indefinite  investments  in non-U.S.
subsidiaries.

         Allowance for Doubtful Accounts:  Activity in  the Company's  allowance
for doubtful accounts receivable consists of the following (in thousands):
<TABLE>
<CAPTION>
                                                                                                   December 31,
                                                                                       -----------------------------------
                                                                                           1999                   1998
                                                                                       ------------           ------------

<S>                                                                                  <C>                    <C>
Balance at beginning of period                                                       $          936         $          561
   Additions to costs and expenses                                                              365                    400
   Deductions for uncollectible receivables written off and recoveries                         (118)                   (25)
                                                                                       ------------           ------------
Balance at end of period                                                             $        1,183         $          936
                                                                                       ============           ============
</TABLE>


NOTE B--INCOME TAXES

         The  provision   for  income  taxes  for  each of the three years ended
December 31, 1999, are comprised of the following (in thousands):
<TABLE>
<CAPTION>
                                          1999            1998           1997
                                        ---------      ----------      ---------

<S>                                   <C>            <C>             <C>
  Current    - Federal                $     1,456    $      3,018    $     8,709
             - State                          156             165            314
             - Foreign                         25             451            142
                                        ---------      ----------      ---------
                                            1,637           3,634          9,165
                                        ---------      ----------      ---------

  Deferred   - Federal                      1,678           9,463          8,256
             - State                            -               -              1
             - Foreign                      3,823             526              -
                                        ---------      ----------      ---------
                                            5,501           9,989          8,257
                                        ---------      ----------      ---------

  Tax provision  -  Federal                 3,134          12,481         16,965
                 -  State                     156             165            315
                 -  Foreign                 3,848             977            142
                                        ---------      ----------      ---------
                                      $     7,138    $     13,623    $    17,422
                                        =========      ==========      =========
</TABLE>






                                      F-12
<PAGE>

         The differences  between the U.S.  Federal income taxes computed at the
statutory  rate (35%) and the  Company's  income taxes for  financial  reporting
purposes are as follows (in thousands):
<TABLE>
<CAPTION>
                                                   1999              1998           1997
                                                 --------           -------       --------

<S>                                            <C>                <C>           <C>
 Statutory Federal income tax                  $    5,781         $  13,294     $   17,143
 State income tax, less Federal benefit               101               107            206
 Tax difference on foreign earnings                   913               211              -
 Other, net                                           343                11             73
                                                 --------           -------       --------
 Income tax expense                            $    7,138         $  13,623     $   17,422
                                                 ========           =======       ========
</TABLE>

         The  components of the net deferred  income tax liability  reflected in
the Company's  consolidated balance sheets at December 31, 1999 and 1998 were as
follows (in thousands):
<TABLE>
<CAPTION>
                                                                          Deferred Tax Assets
                                                                     (Liabilities) at December 31,
                                                                  -----------------------------------
                                                                     1999                     1998
                                                                  ----------               ----------

<S>                                                             <C>                      <C>
Alternative minimum tax credit carryforward                     $      1,136             $      4,324
Partnership earnings                                                   1,243                      945
Canadian tax credits                                                   1,358                        -
Investment tax credits                                                    44                       44
Other                                                                  2,742                    1,407
                                                                  ----------               ----------
Total deferred tax assets                                              6,523                    6,720
Less:  Valuation allowance                                               (44)                     (44)
                                                                  ----------               ----------
  Deferred tax assets, net of
  valuation allowance                                                  6,479                    6,676
                                                                  ----------               ----------

Depreciation, depletion and amortization                             (34,256)                 (30,615)
Deferred revenue                                                      (3,168)                       -
Financial gain on sale of subsidiary stock                                 -                   (2,934)
Other                                                                 (1,833)                  (1,166)
                                                                  ----------
                                                                                           ----------
Total deferred tax liabilities                                       (39,257)                 (34,715)
                                                                  ----------               ----------

Net deferred tax liability                                      $    (32,778)            $    (28,039)
                                                                  ==========               ==========
</TABLE>

         As of December 31,  1999,  the Company has an  alternative  minimum tax
(AMT)  credit  carryforward  of  approximately  $1,136,000  which can be used to
offset regular Federal income taxes payable in future years.  The AMT credit has
an indefinite carryforward period.

         In  connection  with the exercise of  non-qualified  stock  options and
common stock  purchase  warrants by employees  during 1999,  1998 and 1997,  the
Company received  $597,000,  $344,000 and $5,657,000,  respectively,  in Federal
income tax savings which has been  reflected as a credit to  additional  paid-in
capital.
















                                      F-13
<PAGE>

NOTE C--DEBT

         The following is a summary of the  Company's  debt at December 31, 1999
and 1998 (in thousands):
<TABLE>
<CAPTION>
                                                                       December 31,
                                                               ---------------------------
                                                                  1999             1998
                                                               ----------       ----------
<S>                                                          <C>              <C>
Senior notes, Series A, 7.17%, maturing in equal
     amounts of $8,333 through 2001                          $     16,667     $     25,000
Senior notes, Series B, 7.17%, maturing in equal
     amounts of $5,500 through 2002                                16,500           22,000
Senior notes, Series C, 7.48%, maturing in equal
     amounts of $4,500 through 2002                                13,500           18,000
Senior notes, Series D, 7.03%, maturing in 2004                    20,000                -
Senior notes, Series E, 7.28%, maturing in equal
     amounts of $12,500 beginning 2004
     through 2009                                                  75,000                -
Senior notes, Series F, 7.43%, maturing in 2009                    43,000                -
Parent revolving credit agreement, maturing
     in 2001 (average 7.22% at December 31,
     1999)                                                         40,500           66,500
Parent revolving credit agreement, cancelled
     in 1999                                                            -           19,000
Subsidiary revolving credit agreement                                   -                -
Term loans, 7.9%, maturing in varying
     amounts through 2000                                              33              172
                                                               ----------       ----------
                                                             $    225,200     $    150,672
                                                               ==========       ==========
</TABLE>

         Senior  Notes:  The Company has issued six series of  unsecured  Senior
Notes  totaling $213 million  through private placement.  Interest on the Series
A, B and C Senior Notes is payable  semi-annually on June 30 and December 30 and
interest  on the  Series D, E and F Senior  Notes is  payable  semi-annually  on
February 15 and August 15. Accrued interest of $3,735,000 is included in accrued
liabilities at December 31, 1999. At December 31, 1998, the Company did not have
any accrued interest on the Senior Notes.

         Lines of Credit: The Company has a $75 million unsecured revolving line
of credit  facility that matures on March 16, 2001.  The facility bears interest
at a rate  determined  by the  ratio of the  Company's  debt to cash  flow  from
operations. Pursuant to the interest rate pricing structure, funds can currently
be borrowed at LIBOR plus 1 1/2%, the bank's  prevailing  prime rate, or the sum
of the Federal Funds effective rate for such day plus 1/2%. Certain restrictions
exist that limit the amount of  borrowings  that the  Company can make under the
credit facility.

         In February 1999, the Company paid all amounts  outstanding under a $25
million line of credit and cancelled the line of credit.

         On  November 9, 1999,  the  Company's  wholly-owned subsidiary, Olympic
Seismic Ltd.  ("Olympic"),  entered into revolving credit facilities which allow
it to borrow up to $5 million  (Canadian  dollars) by way of prime based  loans,
bankers'  acceptances  or letters  of credit.  Prime  based  loans and  bankers'
acceptances  bear  interest at the rate of the bank's  prime rate plus 0.35% per
annum and  0.50% per  annum,  respectively.  Letter of credit  fees are based on
scheduled  rates in effect at the time of  issuance.  The facility is secured by
Olympic's  assets,  but is not  guaranteed  by Seitel,  Inc. or any of its other
subsidiaries.  Borrowings  under  the  facility  are  limited  to 75%  of  trade
receivables  less than 90 days old. The  facility is subject to  repayment  upon
demand and is available from time to time at the Bank's sole discretion. Olympic
did not have any amounts  outstanding  under this line of credit at December 31,
1999.

         The financial  covenant  restrictions  for the Senior Notes and line of
credit  include,  among others,  interest  coverage,  maintenance of minimum net
worth and  limitations on liens,  total debt,  debt issuance and  disposition of
assets. The Company was in compliance with the financial  convenants at December
31, 1999.

         Aggregate maturities of the Company's debt over the next five years and
thereafter are as follows: $18,367,000 in 2000; $58,833,000 in 2001; $10,000,000
in 2002, $0 in 2003, $32,500,000 in 2004 and $105,500,000 thereafter.

                                      F-14
<PAGE>

NOTE D--LEASE OBLIGATIONS

         Assets recorded under capital leases obligations of $30,000 and $17,000
at  December  31, 1999 and 1998,  respectively,  are  included  in property  and
equipment.

         The Company leases office space under operating leases.  Rental expense
for 1999,  1998 and 1997 was  approximately  $1,112,000,  $757,000 and $606,000,
respectively.

         Future minimum lease payments for the five years subsequent to December
31, 1999 and in the aggregate are as follows (in thousands):
<TABLE>
<CAPTION>
                                                   Capital          Operating
                                                    Leases            Leases
                                                 -----------      -----------
<S>                                           <C>               <C>
2000                                          $           24    $         900
2001                                                       -              697
2002                                                       -              423
2003                                                       -              153
2004                                                                      153
                                                 -----------      -----------
Total minimum lease payments                              24    $       2,326
                                                                  ===========
Less amount representing interest                         (1)
                                                 -----------
Present value of net minimum
   lease payments                             $           23
                                                 ===========
</TABLE>

NOTE E--VOLUMETRIC PRODUCTION PAYMENT

         In June 1996, the Company sold a volumetric  production payment for $19
million  to  certain  limited  partnerships.  Under the terms of the  production
payment  agreements,  the  Company  conveyed  a  mineral  property  interest  of
approximately  7.6 billion cubic feet of certain  natural gas and  approximately
363,000 barrels of other  hydrocarbons to the purchasers.  The Company  retained
responsibility  for its working  interest share of the cost of  operations.  The
Company  accounted  for the  proceeds  received in the  transaction  as deferred
revenue  which was  amortized  into  revenue and income as natural gas and other
hydrocarbons were produced and delivered.

         The Company  entered  into an  agreement to  extinguish  the  remaining
portion of its volumetric  production  payment which was effective July 1, 1997.
The cost to acquire the production payment liability exceeded its book value. As
a result of this transaction,  the Company recorded a pre-tax loss of $4,133,000
in the  accompanying  consolidated  statement of  operations  for the year ended
December 31, 1997.

NOTE F--CONTINGENCIES AND COMMITMENTS

         At both  December  31,  1999 and 1998,  $274,000 of charges for seismic
surveys which are payable to joint venture  partners only from the collection of
sales proceeds from those seismic surveys are included in contingent payables.

         The Company has employment agreements with certain of its key employees
and other  incentive  compensation  arrangements  that commit it to  commissions
based on revenue,  bonuses based on pre-tax profits,  and other amounts based on
seismic  data  program  and oil and gas project  profitability.  Part III of the
Company's  Form 10-K  contains a more complete  discussion of these  contractual
obligations.

         The Company guarantees  borrowings up to $750,000 made by its president
under a line of credit.  The Company is only  obligated  to make  payment in the
event of default by its president. The Company has a contractual right of offset
against any salary,  bonus,  commission or other amounts due from the Company to
its president for any amounts paid by the Company pursuant to this guaranty.  At
December  31,  1999,  $700,000  was  outstanding  on this line of credit,  which
represented the maximum amount  outstanding on this line of credit for the year.
The Company did not make any payments under this guaranty during 1999.

         The  Company  is  involved  from  time to time  in or  threatened  with
litigation and is subject to governmental and regulatory controls arising in the
ordinary course of business.  It is the opinion of the Company's management that
all  claims  and  litigation  involving  the  Company  are not  likely to have a
material adverse effect on its financial position or results of operations.

                                      F-15
<PAGE>

         The  Company,  as an owner of oil and gas  properties,  is  subject  to
various federal,  state and local laws and regulations  relating to discharge of
materials into, and protection of, the  environment.  These laws and regulations
may,  among other  things,  impose  liability on the lessee under an oil and gas
lease for the cost of pollution  clean-up  resulting from operations and subject
the lessee to liability for pollution damages.  The Company maintains  insurance
coverage,  which it believes is  customary in the  industry,  although it is not
fully insured against all  environmental  risks. The Company is not aware of any
environmental  claims  existing  as of  December  31,  1999,  which would have a
material impact on its financial position or results of operations.

NOTE G--FINANCIAL INSTRUMENTS AND OFF-BALANCE-SHEET RISK

         The  Company  has  a  price  risk  management   program  that  utilizes
derivative financial  instruments,  principally natural gas swaps, to reduce the
price risk  associated with  fluctuations in natural gas prices.  Such contracts
usually are placed with major  derivative  dealers that the Company believes are
minimal credit risks. The derivative financial  instruments call for the Company
to receive or make payments  based upon the  differential  between a fixed and a
variable  commodity  price as  specified in the  contract.  As a result of these
activities,  the Company  recognized  net hedging gains  (losses) of $(308,000),
$653,000  and $474,000  for the years ended  December  31, 1999,  1998 and 1997,
respectively.

         As of December 31, 1999, the Company had open natural gas swaps through
July 2000 covering  10,000 MMBtu per day at a fixed price of $2.51 per MMBtu and
for  August  2000  covering  5,000  MMBtu per day at a fixed  price of $2.57 per
MMBtu.

         The estimated fair value of open commodity  price hedges as of December
31, 1999 and December 31, 1997 was $(377,000) and $183,000,  respectively. As of
December 31, 1998, the Company did not have any open commodity price hedges.

NOTE H--STOCK OPTIONS AND WARRANTS

         The Company presently maintains four stock option plans under which the
Company's  officers,  directors and employees may be granted options or warrants
to purchase the  Company's  common  stock.  The exercise  price,  term and other
conditions  applicable  to each option or warrant  granted  under the  Company's
plans are  generally  determined  by the  Compensation  Committee at the time of
grant and may vary with each option or warrant granted. All options and warrants
issued under the Company's  plans are issued at or above the market price of the
Company's  common stock as of the date of issuance,  have a term of no more than
ten years and vest under varying  schedules in accordance  with the terms of the
respective option or warrant agreements.

         The following  summarizes  information  with regard to the stock option
and warrant plans for the years ended  December 31, 1999,  1998 and 1997 (shares
in thousands):
<TABLE>
<CAPTION>
                                                    1999                       1998                       1997
                                           ------------------------   ------------------------   ------------------------
                                                         Weighted                   Weighted                   Weighted
                                                          Average                    Average                    Average
                                                         Exercise                   Exercise                   Exercise
                                            Shares         Price       Shares         Price       Shares         Price
                                           --------      ----------   --------      ----------   --------      ----------

<S>                                        <C>         <C>            <C>         <C>            <C>         <C>
Outstanding at beginning of year              6,768    $     12.99       5,659    $     16.33       4,758    $     11.50
     Granted                                    878          12.98       5,015          13.75       3,444          20.18
     Exercised                                 (481)         10.75        (102)          9.74      (1,809)          9.26
     Cancelled                                 (312)         11.87      (3,804)         19.00        (734)         20.53
                                           --------                   --------                   --------
Outstanding at end of year                    6,853          13.01       6,768          12.99       5,659          16.33
                                           ========                   ========                   ========
Options exercisable at end of year            5,626                      5,363                      4,147
                                           ========                   ========                   ========
Available for grant at end of year            1,636                      1,170                      1,256
                                           ========                   ========                   ========
</TABLE>








                                      F-16
<PAGE>

         The following table summarizes information for the options and warrants
outstanding at December 31, 1999 (shares in thousands):
<TABLE>
<CAPTION>
                                             Options Outstanding                     Options Exercisable
                                --------------------------------------------    ---------------------------
                                 Number of       Weighted          Weighted      Number of        Weighted
                                  Options        Average           Average        Options         Average
                                Outstanding    Contractual         Exercise     Exercisable       Exercise
Range of Exercise Prices        at 12/31/99      Life in            Price       at 12/31/99        Price
                                                  Years
- -----------------------------   -----------    -------------      ----------    -----------      ----------
<S>                             <C>            <C>                <C>           <C>              <C>
   $   2.65   -   $    11.82          1,776        3.25         $       9.73          1,480    $      10.00
   $  12.31   -   $    12.50            680        5.85                12.41            680           12.41
   $  12.87   -   $    13.73          3,663        3.46                13.72          2,810           13.71
   $  14.34   -   $    24.60            684        4.26                17.45            606           17.77
   $  24.93   -   $    24.93             50        6.73                24.93             50           24.93
                                -----------                                     -----------
   $   2.65   -   $    24.93          6,853                            13.01          5,626           13.11
                                ===========                                     ===========
</TABLE>

         The Company applies APB Opinion No. 25 and related  interpretations  in
accounting for its stock-based  compensation plans. APB Opinion No. 25 generally
does not  require  compensation  costs to be  recorded  on  options  which  have
exercise  prices at least equal to the market  price of the stock on the date of
grant.  Accordingly,  no compensation cost has been recognized for the Company's
stock-based   plans.  Had  compensation  cost  for  the  Company's   stock-based
compensation  plans been  determined  based on the fair value at the grant dates
for awards  under those plans  consistent  with the optional  accounting  method
prescribed  by SFAS No. 123,  "Accounting  for  Stock-Based  Compensation,"  the
Company's  net income and  earnings per share would have been reduced to the pro
forma amounts indicated below (in thousands, except per share data):
<TABLE>
<CAPTION>
                                                          1999                 1998             1997
                                                        ----------           ----------       ----------

<S>                                                   <C>                  <C>              <C>
Net income                              As reported   $     9,380          $    24,360      $    31,557
                                          Pro forma   $     5,331          $    15,159      $    17,039

Basic earnings per share                As reported   $       .39          $      1.07      $      1.48
                                          Pro forma   $       .22          $       .67      $       .80

Diluted earnings per share              As reported   $       .39          $      1.05      $      1.43
                                          Pro forma   $       .22          $       .66      $       .78
</TABLE>

         The fair value of each option grant was  estimated on the date of grant
using the Black-Scholes  option-pricing model with the following assumptions for
1999,  1998 and 1997,  respectively:  (1) risk-free  interest rates ranging from
5.56% to 6.73%,  4.44% to 5.03% and 5.79% to 6.79%; (2) dividend yield of 0%, 0%
and 0%; (3) stock price  volatility  ranging  from 47.84% to 482.90%,  44.34% to
57.10% and 37.23% to 45.77%,  and (4) expected  option lives ranging from .67 to
10 years, .42 to 10 years and 1.67 to 10 years. The weighted-average  fair value
of options granted during 1999, 1998 and  1997 was $12.57,  $11.94 and $9.98 per
option, respectively, for options granted at fair market value and $7.13, $13.75
and $10.15 per option for options  granted above fair market value in 1999, 1998
and  1997,  respectively.   The  pro  forma  amounts  shown  above  may  not  be
representative  of future results  because the SFAS No. 123 method of accounting
has not been applied to options granted prior to January 1, 1995.

NOTE I--NON-EMPLOYEE DIRECTORS' PLANS

         The Company has a Non-Employee  Directors'  Deferred  Compensation Plan
which permits each  non-employee  director to elect to receive  annual  director
fees in the form of stock options and to defer receipt of any director fees in a
deferred  cash account or as deferred  shares.  As of December 31, 1999,  60,000
shares  have been  reserved  for  issuance  under this plan and  directors  have
accumulated  7,067  deferred  shares in their  accounts of which 656 shares have
been distributed and 6,411 will be distributed in future years.

         In 1999,  the  Company's  Board of Directors  adopted the  Non-Employee
Directors'  Retirement Plan which provides that each non-employee  director with
10 or more years continuous  service is eligible to receive a retirement benefit
based on a formula  defined in the plan. In 1999, the Company  expensed  $18,000
related to this plan.


                                      F-17
<PAGE>

NOTE J--COMMON STOCK

         On November  20,  1997,  the  shareholders  of the Company  approved an
increase  in the  Company's  authorized  common  stock to  50,000,000  shares to
facilitate  a  two-for-one  stock  split,  effected  in the form of a 100% stock
dividend,  which was approved by the Board of Directors on October 7, 1997.  The
two-for-one stock split was paid in the form of a stock dividend to shareholders
of record as of December 3, 1997. All numbers of shares and per share amounts in
the  accompanying  consolidated  financial  statements  and footnotes  have been
restated to give effect to the two-for-one stock split except where noted.

         In  December  1997,  the  Company's  Board of  Directors  approved  the
expenditure of up to $25 million to repurchase the Company's common stock. As of
December 31, 1999, the Company has repurchased 679,700 shares of common stock at
a cost of $6,275,000 under this plan.

         The  Company  may  offer  from time to time in one or more  series  (i)
unsecured debt securities,  which may be senior or subordinated,  (ii) preferred
stock and (iii)  common  stock or any  combination  of the  foregoing,  up to an
aggregate of $41,041,600 pursuant to an effective "shelf" registration statement
filed with the Securities and Exchange Commission  ("SEC").  In addition,  under
another effective "shelf" registration statement filed with the SEC, the Company
may offer up to an aggregate of $200,000,000 of the following securities, in any
combination,  from  time  to  time in one or more  series:  (1)  unsecured  debt
securities, which may be senior or subordinated; (2) preferred stock; (3) common
stock, and (4) trust preferred securities.

         On July 21, 1992,  the Company  granted  ten-year  loans at an interest
rate of 4% to most of its  employees  for the purchase of 800,000  shares of the
Company's  common stock at the then market price of $2.69 per share.  Payment of
5% of the original  principal  balance  plus  accrued  interest are due annually
August 1, with a balloon  payment of the  remaining  principal  and interest due
August 1, 2002. On October 2, 1998, the Company  granted  five-year  loans at an
interest rate of 4% to most of its employees for the purchase of 794,300  shares
of the  Company's  common  stock at the then  market  price of $10.31 per share.
Payment of 60% of the loan amount plus  accrued  interest is being made in equal
monthly,  quarterly or annual payments, as applicable,  and a balloon payment of
the  remaining  40% is due on October  2, 2003.  The  Company  recorded  related
compensation  expense due to the below  market  interest  rate on these loans of
$114,000,  $54,000 and $43,000 for the years ended  December 31, 1999,  1998 and
1997, respectively. During 1999, 1998 and 1997, the Company received $1,736,000,
$649,000 and $96,000,  respectively,  as principal  payments on these notes. The
stock  certificates  are held by the  Company  as  collateral  until  payment is
received.

NOTE K--PREFERRED STOCK

         The Company is authorized by its Amended  Certificate of  Incorporation
to issue  5,000,000  shares of preferred  stock,  the terms and conditions to be
determined by the Board of Directors in creating any  particular  series.  As of
December 31, 1999, no preferred stock had been issued.

NOTE L--INVESTMENT IN EAGLE GEOPHYSICAL, INC.

         On August 11, 1997, the Company's wholly-owned seismic data acquisition
crew subsidiary, Eagle Geophysical, Inc. ("Eagle"),  completed an initial public
offering  ("Offering")  in which the Company  sold  1,880,000  of its  3,400,000
shares of Eagle common stock as a selling stockholder.  The Company received net
proceeds of $29,723,000 from its  participation in the Offering,  resulting in a
pre-tax gain,  net of costs of  $18,449,000 on the sale of Eagle common stock in
1997.  Additionally,  the  Company  recorded a pre-tax  gain,  net of costs,  of
$10,750,000 in 1997 representing an increase in the Company's  underlying equity
of  Eagle as a result  of  Eagle's  issuance  of  stock in  connection  with the
Offering.

         In 1998, Eagle issued stock in connection with two  acquisitions  which
caused  the  Company  to record a pre-tax  loss of  $193,000  for the year ended
December 31, 1998.

         On April 22, 1999, the Board of Directors of Seitel,  Inc.  declared to
its common  stockholders a dividend consisting of the remaining 1,520,000 shares
of the common stock of Eagle owned by the Company.  The dividend was declared at
the rate of  approximately  0.064 shares of Eagle common stock for each share of
Seitel,  Inc.  common stock owned as of the close of business on the record date
of May 18, 1999.  The fair market value of the common stock of Eagle held by the
Company on the date this dividend was declared was lower than the carrying value
of  the  stock  on  the  Company's   balance  sheet;   therefore,   a  non-cash,
non-recurring,  pre-tax  impairment,  net of bonus  effect,  of  $7,794,000  was
recorded for the year ended December 31, 1999.
                                      F-18
<PAGE>

NOTE M--RELATED PARTY TRANSACTIONS

         The Company  periodically uses the seismic data acquisition services of
Eagle. The Company incurred charges of $27,385,000,  $79,900,000 and $22,200,000
for these  services for the four months ended April 30, 1999, for the year ended
December 31, 1998 and from the period August 11, 1997 through December 31, 1997,
respectively.

         The Company owed Helm Resources,  Inc. and its subsidiaries ("Helm"), a
company  that has three  executive  officers  who are  directors of the Company,
$2,000 as of December  31, 1999 and 1998 for sales of seismic  data they jointly
own and for general and  administrative  expenses  paid by Helm on behalf of the
Company.  The Company  incurred  charges of $115,000,  $99,000 and $76,000,  for
these  general  and   administrative   expenses  during  1999,  1998  and  1997,
respectively.  Management believes that these expenses,  which were specifically
related to the  Company's  business,  represented  costs  which  would have been
incurred in similar  amounts by the Company if such services that were performed
by Helm were performed by an unaffiliated entity.

         Certain  employees  and  directors of the Company  contributed  cash to
partnerships  in  1994  through  1997  which  invested  in the  exploration  and
development of oil and gas properties on a working interest basis along with DDD
Energy,  Inc. ("DDD Energy").  Each  partnership's  working interest amounted to
2.5% of the total  investment  made by such  partnership  and DDD Energy for the
partnership formed in 1997, 3% for the partnership formed in 1996 and 5% for the
partnerships  formed in 1995 and 1994. On October 1, 1998, DDD Energy  purchased
the oil and gas  interests  owned by each of the  partnerships  in exchange  for
355,733 shares of the Company's common stock, payment of $824,000 and assumption
of each partnership's liabilities totaling $1,555,000.

NOTE N--MAJOR CUSTOMERS

         No  customers  accounted  for 10% or more of revenues  during the years
1999, 1998 or 1997.

         The  Company  extends  credit to various  companies  in the oil and gas
industry  for  the  purchase  of  their  seismic   data,   which  results  in  a
concentration of credit risk. This  concentration of credit risk may be affected
by  changes in  economic  or other  conditions  and may  accordingly  impact the
Company's  overall credit risk.  However,  management  believes that the risk is
mitigated  by  the  number,  size,  reputation  and  diversified  nature  of the
companies to which they extend  credit.  Historical  credit  losses  incurred on
receivables by the Company have been immaterial.

NOTE O--STATEMENT OF CASH FLOW INFORMATION

         For purposes of the statement of cash flows, the Company  considers all
highly liquid  investments or debt instruments  with original  maturity of three
months or less to be cash equivalents.

         Operating  cash flows reported in the  consolidated  statements of cash
flows do not reflect effects of changes in inventory  levels because the Company
reports no inventories  and classifies  cash  expenditures  for its seismic data
library as an investing, rather than an operating, activity.

         Significant non-cash investing and financing activities are as follows:

         1.       During 1999, the Company declared to its common stockholders a
                  dividend  consisting  of the  remaining  1,520,000  shares  of
                  common  stock of Eagle owned by the Company with a fair market
                  value of $6,365,000.

         2.       During  1999 and  1997,  capital  lease  obligations  totaling
                  $33,000 and  $374,000,  respectively,  were  incurred when the
                  Company entered into leases for property and equipment.

         3.       During 1998,  the Company  issued 355,733 shares of its common
                  stock valued at $3,914,000 to acquire interests in certain oil
                  and  gas   properties   and   assumed   liabilities   totaling
                  $1,555,000.

         4.       During 1998,  the Company  issued 794,300 shares of its common
                  stock to its  officers  and  employees in  exchange  for notes
                  receivable of $8,191,000.

                                      F-19
<PAGE>

NOTE P--INDUSTRY SEGMENTS

         The Company  adopted SFAS No. 131,  "Disclosures  about  Segments of an
Enterprise and Related Information" in 1998. SFAS No. 131 establishes  standards
for  reporting   information  about  operating   segments  in  annual  financial
statements and requires selected information about operating segments in interim
financial reports.

         The  Company  operates  in  two  reportable   segments  -  seismic  and
exploration  and  production.  In 1997, the Company had an additional  reporting
segment - geophysical  services.  The long-term financial performance of each of
the  reportable  segments  is  affected  by  similar  economic  conditions.  The
accounting  policies of the segments are the same as those described in Footnote
A to these consolidated  financial statements.  Intersegment sales are accounted
for at prices  comparable to those  received from  unaffiliated  customers.  The
Company  evaluates  performance  of each  reportable  segment based on operating
income (loss) before  selling,  general and  administrative  expenses,  interest
income and expense, income taxes, non-recurring items and accounting changes.

         Financial  information by reportable  segment for the three years ended
December 31, 1999, was as follows (in thousands):
<TABLE>
<CAPTION>
                                                                     Exploration
                                                                         and             Geophysical           Total
                                                   Seismic           Production           Services           Segments
                                                -------------       -------------       -------------      -------------
<S>                                           <C>                 <C>                 <C>                <C>
1999
Revenue from external purchasers              $       109,671     $        19,036     $             -    $       128,707
Depreciation, depletion
  and amortization                                     49,375               9,093                   -             58,468
Cost of sales                                             296               4,720                   -              5,016
Segment operating income                               60,000               5,223                   -             65,223
Assets                                                391,849             157,925                   -            549,774
Capital expenditures (a)<F1>                          116,525              22,318                   -            138,843

1998
Revenue from external purchasers              $       125,863     $        18,994     $             -    $       144,857
Depreciation, depletion
  and amortization                                     57,117              11,872                   -             68,989
Cost of sales                                             191               4,683                   -              4,874
Segment operating income                               68,555               2,439                   -             70,994
Assets                                                317,292             156,623                   -            473,915
Capital expenditures (a)<F1>                          139,167              48,173                   -            187,340

1997
Revenue from external purchasers              $        85,560     $        25,680     $        16,316    $       127,556
Intersegment revenue                                        -                   -              18,456             18,456
Depreciation, depletion
  and amortization                                     35,163              12,666                 983             48,812
Impairment of oil and gas
   properties                                               -               9,560                   -              9,560
Cost of sales                                             394               5,168              26,855             32,417
Segment operating income (loss)                        50,003              (1,714)              6,934             55,223
Assets                                                219,288             122,930                   -            342,218
Capital expenditures (a)<F1>                           89,472              64,418               8,478            162,368

<FN>
(a)<F1> Includes other ancillary equipment.
</FN>
</TABLE>






                                      F-20


<PAGE>


         The following geographic information for the three years ended December
31, 1999 pertains to the Company's seismic segment (in thousands):
<TABLE>
<CAPTION>
                                                                                                Other
                                                        United                                 Foreign
                                                        States             Canada             Countries             Total
                                                      -----------        -----------         -----------         -----------
<S>                                                 <C>                <C>                 <C>                 <C>
1999
Revenue from external customers                     $      83,532      $      26,139       $           -       $     109,671
Assets                                                    347,672             42,654               1,523             391,849

1998
Revenue from external customers                     $     117,623      $       7,370       $         870       $     125,863
Assets                                                    301,704             13,797               1,791             317,292

1997
Revenue from external customers                     $      82,228      $       2,748       $         584       $      85,560
Assets                                                    215,273              1,986               2,029             219,288
</TABLE>

         All exploration  and production  activities are conducted in the United
States.

         The following  table  reconciles  segment  information  to consolidated
totals:  (in thousands)
<TABLE>
<CAPTION>
                                                                                       December 31,
                                                                ----------------------------------------------------------
                                                                    1999                   1998                    1997
                                                                -----------            -----------            ------------
<S>                                                           <C>                    <C>                    <C>
Revenue:
   Revenue from external purchasers                           $     128,707          $     144,857          $      127,556
   Intersegment revenue                                                   -                      -                  18,456
   Intercompany eliminations                                              -                      -                 (18,456)
                                                                -----------            -----------            ------------
     Total consolidated revenue                               $     128,707          $     144,857          $      127,556
                                                                ===========            ===========            ============

Depreciation, depletion and amortization:
   Total reportable segment depreciation,
     depletion and amortization                               $      58,468          $      68,989          $       48,812
   Corporate and other                                                1,156                    901                     867
                                                                -----------            -----------            ------------
     Total consolidated depreciation,
       depletion and amortization                             $      59,624          $      69,890          $       49,679
                                                                ===========            ===========            ============

Cost of Sales:
   Total reportable segment cost of sales                     $       5,016          $       4,874          $       32,417
   Intercompany eliminations                                              -                      -                 (14,464)
                                                                -----------            -----------            ------------
     Total consolidated cost of sales                         $       5,016          $       4,874          $       17,953
                                                                ===========            ===========            ============

Income from continuing operations before income taxes:
     Total reportable segment operating
       income                                                 $      65,223          $      70,994          $       55,223
     Selling general and
       administrative expense                                       (28,587)               (26,599)                (23,043)
     Interest expense, net                                          (11,077)                (5,540)                 (3,554)
     Equity in earnings (loss) of affiliate                             (91)                   222                     146
     Impairment due to dividend
       distribution of affiliate stock                               (7,794)                     -                       -
     Gain on sale of subsidiary stock                                     -                      -                  18,449
     Increase (decrease) in underlying
       equity of affiliate                                                -                   (193)                 10,750
     Extinguishment of volumetric
       production payment                                                 -                      -                  (4,133)
     Eliminations and other                                          (1,156)                  (901)                 (4,859)
                                                                -----------            -----------            ------------
       Income from continuing operations
         before income taxes                                  $      16,518          $      37,983          $       48,979
                                                                ===========            ===========            ============

Assets:
   Total reportable segment assets                            $     549,774          $     473,915          $      342,218
   Corporate and other                                                6,145                 21,852                  23,464
                                                                -----------            -----------            ------------
     Total consolidated assets                                $     555,919          $     495,767          $      365,682
                                                                ===========            ===========            ============
</TABLE>
                                      F-21

<PAGE>


NOTE Q--QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

         The  following  is a summary  of the  unaudited  quarterly  results  of
operations for the years ended December 31, 1999 and 1998.
<TABLE>
<CAPTION>
                                                                                       Quarter Ended
                                                                -------------------------------------------------------------
(In thousands, except per share amounts)                         March 31         June 30         Sept. 30         Dec. 31
                                                                ----------       ----------      -----------      -----------

<S>                                                           <C>              <C>             <C>              <C>
1999
Revenue                                                       $    37,881      $    34,127     $     24,617     $     32,082
Gross profit(1)<F1>                                                19,130           18,181           11,641           16,271
Provision for income taxes                                            848            2,879              850            2,561
Net income                                                            750            4,875              824            2,931
Earnings per share: (2)<F2>
   Basic                                                              .03              .20              .03              .12
   Diluted                                                            .03              .20              .03              .12

1998
Revenue                                                       $    30,927      $    36,976     $     38,332     $     38,622
Gross profit(1)<F1>                                                14,851           18,123           17,825           20,195
Provision for income taxes                                          2,873            3,741            3,693            3,316
Net income                                                          4,865            6,369            6,288            6,838
Earnings per share: (2)<F2>
   Basic                                                              .22              .28              .28              .29
   Diluted                                                            .21              .28              .28              .29

<FN>
(1)<F1>   Gross profit represents revenue less data bank amortization, depletion
          of oil and gas properties and cost of sales.

(2)<F2>   The sum of the individual  quarterly  earnings per share may not agree
          with the year to date earnings per share as each period's  computation
          is based on the weighted  average number of common shares  outstanding
          during the period.
</FN>
</TABLE>

NOTE R--PROPOSED SALE OF OIL AND GAS SUBSIDIARY

         In November  1999, the Company's 19% owned  subsidiary,  Vision Energy,
Inc.  ("Vision  Energy"),  filed  a  registration  statement  with  the  SEC  to
accomplish  the spin-off of DDD Energy,  a wholly-owned  subsidiary,  through an
initial public offering.  In the proposed offering,  Vision Energy would acquire
all of the stock of DDD Energy from the Company in exchange  for the issuance of
shares of Vision Energy stock to the Company, and the Company would sell most of
these Vision  Energy shares in the public  offering for cash.  Completion of the
offering  is  expected  to occur  during  the  second or third  quarter of 2000;
however,  its completion is dependent upon market  conditions and other factors.
The Company  continues  to explore  opportunities  to maximize  the value of DDD
Energy. In the event the sale is not completed, DDD Energy will continue to be a
wholly-owned  subsidiary of the Company.  The Company does not anticipate a loss
will be incurred on this transaction.

         As of  December  31,  1999,  the Company had  incurred  costs  totaling
$757,000 in connection with the proposed initial public offering. The costs have
been  included in prepaid  expenses,  deferred  charges and other  assets in the
consolidated  balance  sheet  as of  December  31,  1999.  If  the  offering  is
completed,  the costs  will be  deducted  from the  proceeds  received  from the
offering. If the offering is not completed, the costs will be charged to expense
in the period a decision is made to terminate the offering.

NOTE S--SUPPLEMENTAL OIL AND GAS INFORMATION (UNAUDITED)

         The  following   information   concerning  the  Company's  oil  and gas
operations is presented in accordance with SFAS No. 69,  "Disclosures  about Oil
and Gas Producing Activities."


                                      F-22


<PAGE>


         Oil and Gas Reserves:  Proved oil and gas reserves represent  estimated
quantities of natural gas,  crude oil,  condensate  and natural gas liquids that
geological and engineering data demonstrate,  with reasonable  certainty,  to be
recoverable in future years from known  reservoirs  under economic and operating
conditions  existing  at the time the  estimates  were  made.  Proved  developed
reserves  are  proved  reserves  expected  to be  recovered  through  wells  and
equipment in place and under  operating  methods being  utilized at the time the
estimates were made.

         The following  table sets forth estimates of proved reserves and proved
developed  reserves  of  natural  gas and crude oil  (including  condensate  and
natural  gas  liquids)  attributable  to the  Company's  interest in oil and gas
properties.  The  reserve  estimates  presented  herein  were  prepared  by  the
independent petroleum engineering firms of Garb Grubbs Harris & Associates, Inc.
(formerly Forrest A. Garb & Associates, Inc.) at December 31, 1999 and 1998, and
Miller and Lents, Ltd. and Garb Grubbs Harris & Associates, Inc. at December 31,
1997 in accordance  with  guidelines  established by the SEC. It should be noted
that these reserve  quantities  are estimates and may be subject to  substantial
upward or downward  revisions.  The  estimates are based on the most current and
reliable information available; however, additional information obtained through
future  production  and  experience  and  additional   development  of  existing
reservoirs may significantly alter previous estimates of proved reserves.
<TABLE>
<CAPTION>
                                                                   Oil            Gas
                                                                  (Mbbl)         (MMcf)
                                                               ------------   ------------
<S>                                                            <C>            <C>
Proved reserves at December 31, 1996                                  2,294         23,761
   Revisions of previous estimates                                     (500)        (3,863)
   Repurchase of volumetric production payment                           98          3,736
   Extensions and discoveries                                         1,110         28,491
   Production                                                          (364)        (5,131)
                                                               ------------   ------------
Proved reserves at December 31, 1997                                  2,638         46,994
   Revisions of previous estimates                                    2,374         12,698
   Purchases of reserves in place                                       284          2,898
   Extensions and discoveries                                         2,428         17,685
   Production                                                          (386)        (6,216)
                                                               ------------   ------------
Proved reserves at December 31, 1998                                  7,338         74,059
   Revisions of previous estimates                                   (1,494)        (6,978)
   Purchases of reserves in place                                       118          6,600
   Sales of reserves in place                                        (1,307)       (11,336)
   Extensions and discoveries                                           152          5,405
   Production                                                          (346)        (5,693)
                                                               ------------   ------------
Proved reserves at December 31, 1999                                  4,461         62,057
                                                               ============   ============

Proved developed reserves -
   December 31, 1996                                                    902         11,563
                                                               ============   ============
   December 31, 1997                                                  1,744         18,483
                                                               ============   ============
   December 31, 1998                                                  5,265         37,844
                                                               ============   ============
   December 31, 1999                                                  2,355         19,608
                                                               ============   ============
</TABLE>

         In  addition to the  production  indicated  above,  in 1997 the Company
delivered  56,000  barrels  and 1,795  million  cubic  feet under the terms of a
volumetric production payment agreement.

         The proved  reserves  disclosed above exclude proved sulfur reserves of
260,000 long tons, 420,000 long tons and 174,000 long tons at December 31, 1999,
1998 and 1997, respectively.








                                      F-23


<PAGE>


         Capitalized  Costs of Oil and Gas  Properties:  As of December 31, 1999
and 1998,  the Company's  capitalized  costs of oil and gas  properties  were as
follows (in thousands):
<TABLE>
<CAPTION>
                                                              December 31,
                                                         -------------------------
                                                            1999            1998
                                                         ----------      ---------

<S>                                                    <C>             <C>
Unproved properties                                    $     54,426    $    53,458
Proved properties                                           150,432        141,118
                                                         ----------      ---------
Total capitalized costs                                     204,858        194,576
Less:  Accumulated depreciation,
  depletion and amortization                                (54,692)       (45,599)
                                                         ----------      ---------
Net capitalized costs                                  $    150,166    $   148,977
                                                         ==========      =========
</TABLE>

         Of the total costs  excluded from the  amortization  calculation  as of
December  31,  1999,  $15,951,000  was incurred  during  1999,  $22,243,000  was
incurred  during 1998,  $5,761,000  was incurred  during  1997,  $6,702,000  was
incurred  during 1996,  $1,932,000  was incurred  during 1995 and $1,837,000 was
incurred  during 1994.  The Company cannot  accurately  predict when these costs
will be included in the  amortization  base, but it is expected that these costs
will be evaluated in the next three to five years.

         Costs  Incurred in Oil and Gas  Activities:  The  following  table sets
forth the  Company's  costs  incurred for oil and gas  activities  for the years
ended December 31, 1999, 1998 and 1997 (in thousands):
<TABLE>
<CAPTION>
                                                              1999            1998            1997
                                                           -----------     -----------      ---------
<S>                                                      <C>             <C>              <C>
Acquisition of properties:
  Evaluated                                              $           -   $       4,701    $    13,813
  Unevaluated                                                    8,303          15,207         10,857
Exploration costs                                               12,789          22,708         26,961
Development costs                                                  847           5,318         12,318
                                                           -----------     -----------      ---------
Total costs incurred                                     $      21,939   $      47,934    $    63,949
                                                           ===========     ===========      =========
</TABLE>

         Results  of  Operations  for  Oil  and Gas  Producing  Activities:  The
following  table sets forth the results of operations  for oil and gas producing
activities for the years ended December 31, 1999, 1998 and 1997 (in thousands):
<TABLE>
<CAPTION>
                                                              1999             1998            1997
                                                           -----------      -----------      --------
<S>                                                    <C>                <C>              <C>
Revenue                                                $        18,637    $      18,663    $   25,282
Production costs                                                (4,706)          (4,673)       (5,155)
Depreciation, depletion and amortization                        (9,093)         (11,872)      (12,666)
Impairment of oil and gas properties                                 -                -        (9,560)
                                                           -----------      -----------      --------
Income (loss) before income taxes                                4,838            2,118        (2,099)
Income tax benefit (expense)                                    (1,693)            (741)          735
                                                           -----------      -----------      --------
Results of operations                                  $         3,145    $       1,377    $   (1,364)
                                                           ===========      ===========      ========
</TABLE>

         In addition to the revenues and production  costs disclosed  above, the
Company had revenues from sulfur sales and related  production costs of $399,000
and $14,000,  respectively,  for the year ended December 31, 1999,  $331,000 and
$10,000,  respectively,  for the year ended  December  31, 1998 and $398,000 and
$13,000, respectively, for the year ended December 31, 1997.

         Standardized  Measure of Discounted  Future Net Cash Flows  Relating to
Proved Oil and Gas  Reserves:  The following  table sets forth the  standardized
measure of the discounted  future net cash flows  attributable  to the Company's
proved oil and gas reserves as  prescribed  by SFAS No. 69.  Future cash inflows
were computed by applying year-end prices of oil and gas to the estimated future
production of proved oil and gas reserves.  Future prices actually  received may
differ from the estimates in the standardized measure.





                                      F-24
<PAGE>

         Future  production and development costs represent the estimated future
expenditures (based on current costs) to be incurred in developing and producing
the proved  reserves,  assuming  continuation of existing  economic  conditions.
Future income tax expenses were computed by applying  statutory income tax rates
to the  difference  between  pre-tax net cash flows  relating  to the  Company's
proved oil and gas reserves and the tax basis of proved oil and gas  properties,
adjusted for tax credits and  allowances.  The  resulting  annual net cash flows
were then  discounted to present  value amounts by applying a 10 percent  annual
discount factor.

         Although  the  information  presented  is based on the  Company's  best
estimates of the required  data, the methods and  assumptions  used in preparing
the data were those prescribed by the FASB. Although not market sensitive,  they
were specified in order to achieve  uniformity in assumptions and to provide for
the use of  reasonably  objective  data.  It is important to note here that this
information  is neither fair market  value nor the present  value of future cash
flows and it does not reflect  changes in oil and gas prices  experienced  since
the  respective  year-end.  It is primarily a tool designed by the FASB to allow
for a reasonable  comparison of oil and gas reserves and changes therein through
the use of a standardized  method.  Accordingly,  the Company cautions that this
data should not be used for other than its intended purpose.

         Management  does not rely  upon the  following  information  in  making
investment and operating decisions.  The Company, along with its partners, bases
such decisions upon a wide range of factors,  including estimates of probable as
well as proved reserves,  and varying price and cost assumptions considered more
representative of a range of possible economic  conditions that may occur in the
future.
<TABLE>
<CAPTION>
                                                                                               December 31,
                                                                                ------------------------------------------
                                                                                   1999            1998            1997
                                                                                ----------      -----------      ---------
                                                                                               (in thousands)
<S>                                                                           <C>             <C>             <C>
Cash inflows                                                                  $    247,158    $    248,608    $   162,762
Production costs                                                                   (56,308)        (43,065)       (21,417)
Development costs                                                                  (37,099)        (17,131)       (21,659)
Income taxes                                                                       (36,554)        (47,541)       (27,453)
                                                                                ----------      ----------      ---------
Future net cash flows                                                              117,197         140,871         92,233

10 percent annual discount                                                         (45,133)        (59,328)       (27,636)
                                                                                ----------      ----------      ---------

Standardized measure of discounted future net cash flows (1)<F1> (2)<F2>      $     72,064    $     81,543    $    64,597
                                                                                ==========      ==========      =========
<FN>
(1)<F1>  Estimated  future net cash flows before income tax expense,  discounted
         at  10  percent   per   annum,   totaled   approximately   $94,796,000,
         $107,649,000  and  $83,282,000 as of December 31, 1999,  1998 and 1997,
         respectively.

(2)<F2>  The above table  excludes  future net cash flows before income taxes of
         $5,029,000,  $9,167,000 and $3,187,000,  and discounted future net cash
         flows before income taxes of $2,854,000,  $4,310,000 and $2,350,000, as
         of December 31, 1999,  1998 and 1997,  respectively,  related to proved
         sulfur reserves.
</FN>
</TABLE>


















                                      F-25
<PAGE>

         The following are the principal  sources of changes in the standardized
measure of  discounted  future net cash flows for the years ended  December  31,
1999, 1998 and 1997 (in thousands):

<TABLE>
<CAPTION>
                                                                             1999              1998              1997
                                                                           ---------        ----------        ----------
<S>                                                                      <C>              <C>               <C>
Standardized measure, beginning of year                                  $    81,543      $     64,597      $     52,090
Extensions and discoveries, net of related costs                              13,001            34,102            45,193
Sales of oil and gas produced, net of production costs                       (13,931)          (13,990)          (16,035)
Net changes in prices and production costs                                    26,992           (25,385)          (28,384)
Change in future development costs                                            (9,608)            3,626            (2,650)
Development costs incurred during the period that reduced
   future development costs                                                      227             4,330             7,802
Revision of previous quantity estimates                                      (19,232)           31,358            (8,927)
Repurchase of volumetric production payment                                        -                 -             8,319
Purchases of reserves in place                                                 6,222             4,609                 -
Sales of reserves in place                                                   (23,402)                -                 -
Accretion of discount                                                         10,765             8,328             7,276
Net change in income taxes                                                     3,375            (7,422)            1,988
Change in production rates and other                                          (3,888)          (22,610)           (2,075)
                                                                           ---------        ----------        ----------
Standardized measure, end of year                                        $    72,064      $     81,543      $     64,597
                                                                           =========        ==========        ==========
</TABLE>








































                                      F-26


<PAGE>





                                     EXHIBIT
                                      INDEX
- -------      -----------------------------------------------------------  ------

Exhibit      Title                                                         Page
                                                                          Number
- -------      -----------------------------------------------------------  ------


10.46       Third  Amendment,  dated as of  November  22,  1999,  to the      53
            Separate Note Purchase Agreements,  dated as of December 28,
            1995, among Seitel, Inc. and the Noteholders

10.50       Second  Amendment,  dated as of November  22,  1999,  to the      58
            Separate Note Purchase Agreements,  dated as of February 12,
            1999, among Seitel, Inc. and the Noteholders

10.51       Revolving  Credit  Agreement,  dated as of November 9, 1999,      63
            between Olympic Seismic Ltd. and Royal Bank of Canada

10.52       Amemdment,  dated  as of  March 2,  2000,  to the  Revolving      87
            Credit  Agreement,  dated as of  November  9, 1999,  between
            Olympic Seismic Ltd. and Royal Bank of Canada


21.1        Subsidiaries of the Registrant                                    89

23.1        Consent of Arthur Andersen LLP                                    91

23.2        Consent of Garb Grubbs Harris & Associates, Inc.                  93




                                                                   EXHIBIT 10.46



                   THIRD AMENDMENT TO NOTE PURCHASE AGREEMENT

     THIS THIRD AMENDMENT,  dated as of November 22, 1999 (the "Amendment"),  to
the separate Note Purchase  Agreements,  dated as of December 28, 1995, is among
Seitel,  Inc. (the "Company") and each of the institutions  which is a signatory
to this Amendment (collectively, the "Noteholders").

                                    RECITALS:

     A. The Company and each of the  Noteholders  have  heretofore  entered into
separate Note Purchase  Agreements dated as of December 28, 1995  (collectively,
as  amended  and in  effect  immediately  prior  to the  effectiveness  of  this
Amendment,  the  "Existing  Note  Purchase  Agreement"),  pursuant  to which the
Company issued: (a) $25,000,000 aggregate principal amount of its 7.17% Series A
Senior  Notes due  December  30, 2001 (the  "Series A Notes"),  (b)  $27,500,000
aggregate  principal  amount of its 7.17% Series B Senior Notes due December 30,
2002 (the "Series B Notes"),  and (c)  $22,500,000  of its 7.48% Series C Senior
Notes due December 30, 2002 (the "Series C Notes",  and together with the Series
A Notes and the Series B Notes, the "Notes").

     B.  Capitalized  terms  used  herein  shall  have the  respective  meanings
ascribed  thereto in the Existing Note Purchase  Agreement unless herein defined
or the context shall otherwise require.

     C. The Company and the  Noteholders  now desire to amend the Existing  Note
Purchase  Agreement in the respects,  but only in the respects,  hereinafter set
forth.

     D. All requirements of law have been fully complied with and all other acts
and  things  necessary  to make  this  Amendment  a  legal,  valid  and  binding
instrument  according to its terms for the purposes  herein  expressed have been
done or performed.

     NOW,  THEREFORE,  for good  and  valuable  consideration  the  receipt  and
sufficiency of which are hereby acknowledged, the Company and the Noteholders do
hereby agree as follows:

SECTION 1. AMENDMENTS.



<PAGE>


     1.1  Amendment to Section  10.6(b)(i).  Section  10.6(b)(i) of the Existing
Note  Purchase  Agreement  is hereby  amended and  restated  in its  entirety as
follows:

          "(i)   Notwithstanding   the  provisions  of  Section   10.6(a),   the
     determination of whether a Transfer  involves a Substantial  Portion of the
     property  of the Company and the  Restricted  Subsidiaries,  as provided in
     Section 10.6(a)(iii)(A), shall be made without taking into account the same
     proportion of the book value  attributable to the property  subject to such
     Transfer as shall be equal to the proportion of the Net Asset Sale Proceeds
     Amount (the "Designated  Portion") to be applied to either (x) a prepayment
     of the Notes  pursuant to Section 8.2 of this Agreement and a prepayment of
     the New Notes  pursuant to Section 8.2 of the New Note Purchase  Agreement,
     pro rata based on the then  outstanding  principal  amount of and  required
     Make-Whole  Amount  (with  respect to the New Notes,  as defined in the New
     Note Purchase  Agreement) due with respect to the prepayment of each series
     of the  Notes  and the  New  Notes  (a  "Prepayment  Transfer")  or (y) the
     acquisition  of assets similar to the assets which were the subject of such
     Transfer (a "Reinvested  Transfer") within one hundred eighty (180) days of
     the consummation of such Transfer, as specified in an Officer's Certificate
     delivered  to  each  holder  prior  to,  or  contemporaneously   with,  the
     consummation of such Transfer."

     1.2  Amendment  to Schedule B.  Schedule B to the  Existing  Note  Purchase
Agreement  is hereby  amended to add,  in the  proper  alphabetical  order,  the
following defined terms:

          "New  Notes -- means the  Company's  7.03%  Series D Senior  Notes due
     February  15,  2004  in  the  original   aggregate   principal   amount  of
     $20,000,000,  7.28%  Series E Senior  Notes due  February  15,  2009 in the
     original  aggregate  principal  amount of  $75,000,000,  and 7.43% Series F
     Senior  Notes due February  15, 2009 in the  original  aggregate  principal
     amount of $43,000,000 issued pursuant to the New Note Purchase Agreement."

          "New  Note  Purchase  Agreement  -- means  each of the  separate  Note
     Purchase  Agreements  between  the Company  and the  purchasers  of the New
     Notes, dated February 12, 1999, as amended from time to time."

SECTION 2. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

     To induce the  Noteholders  to execute and deliver  this  Amendment  (which
representations  shall  survive  such  execution  and  delivery),   the  Company
represents and warrants to the Noteholders that:

          (a) the Company is a corporation duly organized,  validly existing and
     in good standing under the laws of the state of Delaware;

          (b) this Amendment has been duly authorized, executed and delivered by
     the  Company  and this  Amendment  constitutes  a legal,  valid and binding
     obligation, contract and agreement of the Company enforceable against it in
     accordance  with  its  terms,  except  as  enforcement  may be  limited  by
     bankruptcy,  insolvency,  reorganization,  moratorium  or  similar  laws or
     equitable principles relating to or limiting creditors' rights generally;

          (c)  the  Existing  Note  Purchase  Agreement,   as  amended  by  this
     Amendment,  constitutes the legal, valid and binding  obligation,  contract
     and agreement of the Company  enforceable against it in accordance with its
     terms,  except as  enforcement  may be limited by  bankruptcy,  insolvency,
     reorganization, moratorium or similar laws or equitable principles relating
     to or limiting creditors' rights generally;

          (d) the  execution,  delivery and  performance  by the Company of this
     Amendment (i) has been duly  authorized by all requisite  corporate  action
     and, if required,  shareholder action, (ii) does not require the consent or
     approval of any  governmental or regulatory body or agency,  and (iii) will
     not (A) violate (1) any  provision of law,  statute,  rule or regulation or
     its certificate of incorporation  or bylaws,  (2) any order of any court or
     any rule,  regulation  or order of any other agency or  government  binding
     upon it, or (3) any provision of any material indenture, agreement or other
     instrument to which it is a party or by which its  properties or assets are
     or may be bound, or (B) result in a breach of or constitute  (alone or with
     due  notice  or lapse  of time or  both) a  default  under  any  indenture,
     agreement or other  instrument  referred to in clause  (iii)(A)(3)  of this
     paragraph (d); and

          (e) as of the date hereof and after giving  effect to this  Amendment,
     no Default or Event of Default has occurred which is continuing.

SECTION 3. MISCELLANEOUS.

     3.1 This Amendment shall be construed in connection with and as part of the
Existing Note Purchase  Agreement,  and except as modified and expressly amended
by this Amendment, all terms, conditions and covenants contained in the Existing
Note  Purchase  Agreement  and the Notes are  hereby  ratified  and shall be and
remain in full force and effect.

     3.2 This  Amendment  constitutes  a contract  between  the  Company and the
Noteholders for the uses and purposes hereinabove set forth, and may be executed
in any  number  of  counterparts,  each  executed  counterpart  constituting  an
original, but all together only one agreement.

     3.3 Whenever any of the parties hereto is referred to, such reference shall
be deemed to include  the  successors  and  assigns of such  party,  and all the
promises  and  agreements  contained  in this  Amendment  by or on behalf of the
Company  and  the  Noteholders  shall  bind  and  inure  to the  benefit  of the
respective successors and assigns of such parties, whether so expressed or not.

     3.4 This Amendment  constitutes the final written  expression of all of the
terms hereof and is a complete and exclusive statement of those terms.

     3.5 This  Amendment  shall be governed by and construed in accordance  with
the internal laws of the State of New York.

     3.6 This  Amendment  shall  become  effective  at such  time as it has been
executed by the Company and the Required Holders.

            [The remainder of this page is intentionally left blank.
                         Next page is signature page.]

<PAGE>


     IN WITNESS  WHEREOF,  the parties  hereto have caused the execution of this
Amendment by duly authorized officers of each as of the date hereof.

                                       SEITEL, INC.



                                       By   /s/ Debra D. Valice
                                            ------------------------------------
                                            Debra D. Valice,
                                            Executive Vice President - Finance


Accepted and Agreed to:

[NOTEHOLDER]


By
  -------------------------------
Name:
Title:




                                                                   EXHIBIT 10.50




                   SECOND AMENDMENT TO NOTE PURCHASE AGREEMENT

     THIS SECOND AMENDMENT, dated as of November 22, 1999 (the "Amendment"),  to
the separate Note Purchase  Agreements,  dated as of February 12, 1999, is among
Seitel,  Inc. (the "Company") and each of the institutions  which is a signatory
to this Amendment (collectively, the "Noteholders").

                                    RECITALS:

     A. The Company and each of the  Noteholders  have  heretofore  entered into
separate Note Purchase  Agreements dated as of February 12, 1999  (collectively,
as  amended  and in  effect  immediately  prior  to the  effectiveness  of  this
Amendment,  the  "Existing  Note  Purchase  Agreement"),  pursuant  to which the
Company issued: (a) $20,000,000 aggregate principal amount of its 7.03% Series D
Senior  Notes due  February  15, 2004 (the  "Series D Notes"),  (b)  $75,000,000
aggregate  principal  amount of its 7.28% Series E Senior Notes due February 15,
2009 (the "Series E Notes"),  and (c)  $43,000,000  of its 7.43% Series F Senior
Notes due February 15, 2009 (the "Series F Notes",  and together with the Series
D Notes and the Series E Notes, the "Notes").

     B.  Capitalized  terms  used  herein  shall  have the  respective  meanings
ascribed  thereto in the Existing Note Purchase  Agreement unless herein defined
or the context shall otherwise require.

     C. The Company and the  Noteholders  now desire to amend the Existing  Note
Purchase  Agreement in the respects,  but only in the respects,  hereinafter set
forth.

     D. All requirements of law have been fully complied with and all other acts
and  things  necessary  to make  this  Amendment  a  legal,  valid  and  binding
instrument  according to its terms for the purposes  herein  expressed have been
done or performed.

     NOW,  THEREFORE,  for good  and  valuable  consideration  the  receipt  and
sufficiency of which are hereby acknowledged, the Company and the Noteholders do
hereby agree as follows:

SECTION 1. AMENDMENTS.



<PAGE>


     1.1  Amendment to Section  10.6(b)(i).  Section  10.6(b)(i) of the Existing
Note  Purchase  Agreement  is hereby  amended and  restated  in its  entirety as
follows:

          "(i)   Notwithstanding   the  provisions  of  Section   10.6(a),   the
     determination of whether a Transfer  involves a Substantial  Portion of the
     property  of the Company and the  Restricted  Subsidiaries,  as provided in
     Section 10.6(a)(iii)(A), shall be made without taking into account the same
     proportion of the book value  attributable to the property  subject to such
     Transfer as shall be equal to the proportion of the Net Asset Sale Proceeds
     Amount (the "Designated  Portion") to be applied to either (x) a prepayment
     of the Notes  pursuant to Section 8.2 of this Agreement and a prepayment of
     the Old Notes  pursuant to Section 8.2 of the Old Note Purchase  Agreement,
     pro rata based on the then  outstanding  principal  amount of and  required
     Make-Whole  Amount  (with  respect to the Old Notes,  as defined in the Old
     Note Purchase  Agreement) due with respect to the prepayment of each series
     of the  Notes  and the  Old  Notes  (a  "Prepayment  Transfer")  or (y) the
     acquisition  of assets similar to the assets which were the subject of such
     Transfer (a "Reinvested  Transfer") within one hundred eighty (180) days of
     the consummation of such Transfer, as specified in an Officer's Certificate
     delivered  to  each  holder  prior  to,  or  contemporaneously   with,  the
     consummation of such Transfer."

     1.2  Amendment  to Schedule B.  Schedule B to the  Existing  Note  Purchase
Agreement  is hereby  amended to add,  in the  proper  alphabetical  order,  the
following defined terms:

          "Old  Notes -- means the  Company's  7.17%  Series A Senior  Notes due
     December  30,  2001  in  the  original   aggregate   principal   amount  of
     $25,000,000,  7.17%  Series B Senior  Notes due  December  30,  2002 in the
     original  aggregate  principal  amount of  $27,500,000  and 7.48%  Series C
     Senior  Notes due December  30, 2002 in the  original  aggregate  principal
     amount of $22,500,000 issued pursuant to the Old Note Purchase Agreement."

          "Old  Note  Purchase  Agreement  -- means  each of the  separate  Note
     Purchase  Agreements  between  the Company  and the  purchasers  of the Old
     Notes, dated December 28, 1995, as amended from time to time."


SECTION 2. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

     To induce the  Noteholders  to execute and deliver  this  Amendment  (which
representations  shall  survive  such  execution  and  delivery),   the  Company
represents and warrants to the Noteholders that:

          (a) the Company is a corporation duly organized,  validly existing and
     in good standing under the laws of the state of Delaware;

          (b) this Amendment has been duly authorized, executed and delivered by
     the  Company  and this  Amendment  constitutes  a legal,  valid and binding
     obligation, contract and agreement of the Company enforceable against it in
     accordance  with  its  terms,  except  as  enforcement  may be  limited  by
     bankruptcy,  insolvency,  reorganization,  moratorium  or  similar  laws or
     equitable principles relating to or limiting creditors' rights generally;

          (c)  the  Existing  Note  Purchase  Agreement,   as  amended  by  this
     Amendment,  constitutes the legal, valid and binding  obligation,  contract
     and agreement of the Company  enforceable against it in accordance with its
     terms,  except as  enforcement  may be limited by  bankruptcy,  insolvency,
     reorganization, moratorium or similar laws or equitable principles relating
     to or limiting creditors' rights generally;

          (d) the  execution,  delivery and  performance  by the Company of this
     Amendment (i) has been duly  authorized by all requisite  corporate  action
     and, if required,  shareholder action, (ii) does not require the consent or
     approval of any  governmental or regulatory body or agency,  and (iii) will
     not (A) violate (1) any  provision of law,  statute,  rule or regulation or
     its certificate of incorporation  or bylaws,  (2) any order of any court or
     any rule,  regulation  or order of any other agency or  government  binding
     upon it, or (3) any provision of any material indenture, agreement or other
     instrument to which it is a party or by which its  properties or assets are
     or may be bound, or (B) result in a breach of or constitute  (alone or with
     due  notice  or lapse  of time or  both) a  default  under  any  indenture,
     agreement or other  instrument  referred to in clause  (iii)(A)(3)  of this
     paragraph (d); and

          (e) as of the date hereof and after giving  effect to this  Amendment,
     no Default or Event of Default has occurred which is continuing.

SECTION 3. MISCELLANEOUS.

     3.1 This Amendment shall be construed in connection with and as part of the
Existing Note Purchase  Agreement,  and except as modified and expressly amended
by this Amendment, all terms, conditions and covenants contained in the Existing
Note  Purchase  Agreement  and the Notes are  hereby  ratified  and shall be and
remain in full force and effect.

     3.2 This  Amendment  constitutes  a contract  between  the  Company and the
Noteholders for the uses and purposes hereinabove set forth, and may be executed
in any  number  of  counterparts,  each  executed  counterpart  constituting  an
original, but all together only one agreement.

     3.3 Whenever any of the parties hereto is referred to, such reference shall
be deemed to include  the  successors  and  assigns of such  party,  and all the
promises  and  agreements  contained  in this  Amendment  by or on behalf of the
Company  and  the  Noteholders  shall  bind  and  inure  to the  benefit  of the
respective successors and assigns of such parties, whether so expressed or not.

     3.4 This Amendment  constitutes the final written  expression of all of the
terms hereof and is a complete and exclusive statement of those terms.

     3.5 This  Amendment  shall be governed by and construed in accordance  with
the internal laws of the State of New York.

     3.6 This  Amendment  shall  become  effective  at such  time as it has been
executed by the Company and the Required Holders.

            [The remainder of this page is intentionally left blank.
                         Next page is signature page.]

<PAGE>


     IN WITNESS  WHEREOF,  the parties  hereto have caused the execution of this
Amendment by duly authorized officers of each as of the date hereof.

                                   SEITEL, INC.



                                   By   /s/ Paul A. Frame
                                        -------------------------------------
                                        Paul A. Frame,
                                        President and Chief Executive Officer


Accepted and Agreed to:

[NOTEHOLDER]


By
  -------------------------------
Name:
Title:





                                                                   EXHIBIT 10.51


November 9, 1999


Olympic Seismic Ltd.
3750, 205 - 5th Ave. S.W.
Calgary, Alta.
T2P 2V7


Attention: Suzanne Bowden

Dear Sirs:

Re: Credit Facilities

Further to our  discussions,  we are pleased to confirm the  availability of the
credit facilities  described in this letter (the "Credit Facility"),  subject to
the following  terms and  conditions.  Should you find the  following  terms and
conditions  of the Credit  Facility  to be  acceptable,  please  acknowledge  by
signing and retuning the duplicate copy of this letter by November 30, 1999.

The Credit Facility described below is in addition to the undernoted  facilities
which are governed by separate agreements:

             $100,000 Corporate Visa


BORROWER:    OLYMPIC SEISMIC LTD. (the "Borrower')
- ---------

LENDER:      Royal Bank of Canada (the "Bank") through its branch of account
- -------
             (Branch of Account") at 339 - 8th Ave. S.W., Calgary, Alberta.

AMOUNT:      *$5,000,000 is available by way of:
- -------

(a)      Prime Based Loans;
(b)      Bankers' Acceptances; and/or
(c)      Letters of Credit.

             *5,000,000 is available between October 1st and May 30th annually.
             *2,000,000 is available between June 1st and Sept. 30th annually.















<PAGE>


Olympic Seismic Ltd.                                                      Page 2
Confirmation of Credit Facilities Letter
November 9, 1999

PURPOSE:     Operating purposes.
- --------

MARGIN
REQUIREMENTS:Total  amounts  outstanding  under this credit  facility plus the
- ------------ amount of all claims having priority to the Bank shall not at any
             time exceed 75 % of good trade accounts receivable  acceptable to
             the Bank excluding inter-company  accounts,  holdbacks receivable
             and the entire outstanding  balance of accounts where any portion
             exceeds 90 days.

INTEREST
RATES:       Prime Based Loans: Prime + .35% per annum
- --------

             All Segments

             The Borrower shall pay the Bank interest on all Prime Based Loans
             in the currency in which such loans are denominated. The Borrower
             shall pay such  interest  monthly in  arrears  at the  applicable
             rates per annum set out above  calculated on a daily basis on the
             outstanding  amount of such loans and based on the actual  number
             of days elapsed in the period for which such interest is payable.
             Such  interest  shall be payable on the last day of each month or
             on such other day in each month as may be  specified  by the Bank
             from time to time.

ACCEPTANCE
FEES:        RBPAF +. 50% per annum
- ----------

             All Segments

             The Borrower  shall pay to the Bank  acceptance  fees in Canadian
             Dollars  in  advance  at the rate set forth  above at the time of
             issue  of each  Bankers'  Acceptance.  Acceptance  fees  shall be
             calculated on the face amount of the Bankers'  Acceptance  issued
             and based  upon the  number  of days in the term of the  Bankers'
             Acceptance issued.

COMMITMENT
FEE:         A  non-refundable  commitment fee of $12,750 shall be paid on the
- ----------    acceptance of this Agreement.

LETTER OF
CREDIT FEES: Scheduled Rates
- -----------

             Letter of Credit  fees are  payable to the Bank at the  scheduled
             rates  of the Bank  from  time to time in  effect  on the date of
             issue in the  currency  in which the  Letter of Credit is issued.
             The  Letter of Credit  fee shall be based  upon the amount of the
             Letter of Credit issued and calculated on the number of days that
             the Letter of Credit is to be outstanding.












<PAGE>



Olympic Seismic Ltd.                                                      Page 3
Confirmation of Credit Facilities Letter
November 9, 1999

REVOLVING
FUNDS
ARRANGEMENT: A loan  administration  fee of $125 is payable monthly in arrears
- -----------  on the  first  business  day of  each  month  for  the  automatic
             revolvement of loans on behalf of the Borrower.

STANDBY FEES:The  Borrower  shall pay to the Bank a standby  fee  of.125 % per
- ------------ annum  payable  monthly  in  arrears on the 3rd day of each month
             calculated  on a daily  basis on the  unutilized  portion of this
             credit  facility for the period  commencing  on Dec. 1, 1999 with
             the  first  payment  to be made  January  3rd,  2000.  All or any
             portion  of  the  maximum  amount  available  under  this  credit
             facility may be  permanently  cancelled  by the Borrower  without
             penalty  provided  the  Borrower  prepays  such amounts as may be
             necessary  to  ensure  amounts   outstanding  under  this  credit
             facility are not in excess of the maximum amount  available under
             this credit facility after giving effect to such cancellation.

NOTICE
REQUIREMENTS:The Borrower agrees that the Bank may from time to time establish
- ------------ reasonable notice  requirements for obtaining advances and making
             repayments hereunder.

REPAYMENT:   All amounts  outstanding under this Credit Facility including the
- ---------    face amount of all Bankers' Acceptances are payable on demand and
             the following repayment  provisions are in addition to and not in
             substitution for the Bank's right to make such demand.

             This is a  revolving  operating  credit  facility.  The  Borrower
             authorizes  the Bank to advance  and repay  Prime  Based Loans in
             minimum  amounts  of  $5,000  in order to  cover  overdrafts  and
             utilize  deposits  in account  #100-116-1  (Tr.00009)  or in such
             operating deposit accounts of the Borrower as may be specified by
             the Borrower to the Bank from time to time.

SPECIAL
PROVISIONS:  The Special Provisions  contained in Schedule "A" attached hereto
- ----------   form part of this Agreement.

EVIDENCE OF
INDEBTEDNESS:The Bank shall  maintain on the records of the Branch of Account,
- ------------ accounts  evidencing  the  Borrower's  liability  to the  Bank in
             respect of amounts  outstanding by the Borrower to the Bank under
             this  Agreement.  The Bank shall  record the amounts  outstanding
             under  this  Agreement,  all  payments  made from time to time in
             respect  thereof and all other  amounts  becoming due to the Bank
             under this  Agreement  which  remain  unpaid when due. The Bank's
             accounts  constitute,  in the  absence of manifest  error,  prima
             facie evidence of ------------  the  indebtedness of the Borrower
             to the Bank pursuant to this











<PAGE>


Olympic Seismic Ltd.                                                      Page 4
Confirmation of Credit Facilities Letter
November 9, 1999

             Agreement.  The  Borrower  authorizes  and  directs  the  Bank to
             automatically  debit, by mechanical,  electronic or manual means,
             the bank  accounts of the Borrower for all amounts  payable under
             this  Agreement,  including  but not limited to the  repayment of
             principal  and the payment of interest,  fees and all charges for
             the keeping of such bank account.

PREPAYMENTS: Subject to any  provisions to the contrary which are contained in
- -----------  this  Agreement  or  any  other  agreement  entered  into  by the
             Borrower with respect to amounts outstanding  hereunder,  amounts
             outstanding may be prepaid at any time without penalty.

COVENANTS:   Without  affecting  or limiting the right of the Bank at any time
- ---------    to demand  payment  or cancel any  undrawn  portion of any demand
             loan hereunder,  the Borrower  covenants and agrees with the Bank
             to:

             (1)  it will pay duly and punctually all amounts due hereunder;

             (2)  it  will  deliver  to the  Bank  such  financial  and  other
                  information as the Bank may reasonably  request from time to
                  time, including but not limited to the following:

                  (a)  audited  annual  financial  statements  of the Borrower
                       within 120 days after each fiscal year end;
                  (b)  quarterly company prepared Financial  Statements within
                       30 days of each quarter end;
                  (c)  monthly aged list of accounts receivables  supported by
                       a Compliance  Certificate  within 25 days of each month
                       end;
                  (d)  monthly aged list of accounts payable within 25 days of
                       each month end;
                  (e)  any information  that the Bank may require  relating to
                       the state of Year 2000  readiness of the Borrower.  For
                       the  purpose of the  foregoing,  ?Year 2000  readiness?
                       means that all software embedded microchips,  and other
                       processing  capabilities  utilized  by, and material to
                       the business  operations or financial condition of, the
                       Borrower are able to interpret and  manipulate  data on
                       and involving all calendar dates  correctly and without
                       causing any  abnormal  ending  scenario,  including  in
                       relation to dates in and after the year 2000; and
                  (f)  Annual  Business  Plan with 120 days after each  fiscal
                       year end.

             (3)  it will promptly pay when due all business, income and other
                  taxes  properly  levied on its  operations  and property and
                  remit all statutory employee deductions when due;

             (4)  it will not and will not allow or permit its subsidiaries to
                  sell, transfer or otherwise dispose of a substantial portion
                  of its assets without the prior written consent of the Bank;








<PAGE>


Olympic Seismic Ltd.                                                      Page 5
Confirmation of Credit Facilities Letter
November 9, 1999


             (5)  it will,  as of the end of each fiscal  quarter,  maintain a
                  ratio  of debt to  equity  of not  more  than  .50 to 1. For
                  purposes of the foregoing,  debt means all liabilities  less
                  the amount due to  affiliates  and equity means sum of share
                  capital, paid capital,  retained earnings and amounts due to
                  affiliates  minus the  investment in marketable  securities,
                  all as  determined  in accordance  with  generally  accepted
                  accounting principles; and

             (10) it will maintain a current ratio of 1:1.

             All  covenants  contained  herein  shall  remain in force for the
             benefit of the Bank at all times before,  on and after the making
             of  advances  hereunder  and/or the taking of  security  pursuant
             hereto.

ENVIRONMENTAL
PROVISIONS:  The  Borrower  confirms  that it has  disclosed  to the  Bank all
- ----------   environmental  matters which could have a material  effect on the
             financial  condition  or  operations  of  the  Borrower  and  its
             subsidiaries.  The Borrower will keep the Bank fully  informed of
             all  such   matters   and  will   comply  (and  will  ensure  its
             subsidiaries  comply) in all material  respects  with  applicable
             environmental laws and any environmental permits which may govern
             its operations.  The Bank shall have the right to make good faith
             inquiries  with  governmental  agencies  regarding  environmental
             matters  affecting  the Borrower and its  subsidiaries  and, upon
             reasonable notice to the Borrower, the Bank (and its consultants)
             shall have the right to enter the  premises of the  Borrower  and
             its subsidiaries to carry out such  environmental  reviews as the
             Bank in its sole discretion deems advisable.

PERFORMANCE
OF COVENANTS:If the Borrower fails to perform any covenant hereunder, the Bank
- ------------ may, in its sole discretion, perform any such covenant and expend
             such money as may be  necessary  for purposes  thereof.  Any such
             expenditure  so made by the Bank shall be repaid by the  Borrower
             on demand and shall bear  interest  at the rate and in the manner
             set forth  hereunder  for overdue  amounts from the date the Bank
             makes such  expenditure  until and including the date the Bank is
             repaid.

COLLATERAL-
SECURITY:    The Borrower agrees to provide to the Bank, in form and substance
- --------     satisfactory to the Bank, the following  documentation  which the
             Borrower  hereby  acknowledges  will  be  held  by  the  Bank  in
             connection with this Credit Facility:

             - General Security Agreement Floating Charge on Land.















<PAGE>


Olympic Seismic Ltd.                                                      Page 6
Confirmation of Credit Facilities Letter
November 9, 1999

CONDITIONS
PRECEDENT:   The  obligation of the Bank to make  available any advances under
- ---------    the Credit  Facility is conditional  upon the receipt in form and
             substance satisfactory to the Bank of:

             (a) a duly executed copy of this Agreement;
             (b) duly executed copies of Security; and
             (c) satisfactory scoring of Y2K questionnaire.

             The obligation of the Bank to make available the Credit  Facility
             is subject to the Bank being  satisfied,  at the time of advance,
             that a material  adverse  change in the  financial  condition  or
             operation of the Borrower has not occurred,  that the Borrower is
             not in default hereunder, and that no stay of proceedings against
             the Borrower or their property is then in effect.

RESERVE
INDEMNITY:   The  Borrower   shall   reimburse  the  Bank  that  amount  which
- ---------    compensates  the Bank for any  additional  cost or  reduction  in
             income  caused by an  imposition,  implementation  or increase of
             reserves,  capital adequacy or similar requirement against assets
             or liabilities  held by the Bank,  deposits in or for the account
             of the  Bank,  loans  made  by  the  Bank,  bankers'  acceptances
             accepted  by the  Bank,  letters  of  credit  issued by the Bank,
             commitments  by the Bank to fund loans or any  acquisition by the
             Bank of funds for loans made by the Bank.

GENERAL
INDEMNITY:   The  Borrower  shall  indemnify  the Bank  from and  against  all
- ---------    losses,  damages,  expenses  and  liabilities  which the Bank may
             sustain or incur as a consequence  of any default by the Borrower
             under any provision of this  Agreement or as a consequence of any
             environmental  matter,  whether  existent  now or in the  future,
             which affects the property of the Borrower or its subsidiaries.

OTHER
CONDITIONS:  The Credit  Facility is made available at the sole  discretion of
- ----------   the Bank and the Bank may  cancel any  unutilized  portion of the
             Credit Facility at any time and from time to time without notice.

PAYMENTS:    References  herein to "$" means  Canadian  Dollars.  All payments
- --------     hereunder  are  payable  for value on the date on which  they are
             due.

RENEWAL:     The Credit  Facility is available from time to time at the Bank's
- -------      sole discretion and is subject to review by the Bank at any time.














<PAGE>


Olympic Seismic Ltd.                                                      Page 7
Confirmation of Credit Facilities Letter
November 9, 1999

EXPENSES:      All legal costs,  fees and expenses  incurred in connection  with
- --------       the preparation, negotiation,  documentation and operation of the
               Credit  Facility,  including the enforcement of the Bank's fights
               under  each  document  delivered  in  connection  with the Credit
               Facility will be for the account of the Borrower.

We very much appreciate the opportunity to establish our relationship  with your
company.



Yours truly,

ROYAL BANK OF CANADA








































<PAGE>


SCHEDULE "A" TO A LETTER  AGREEMENT DATED NOVEMBER 9, 1999 BETWEEN ROYAL BANK OF
CANADA AND OLYMPIC SEISMIC LTD.

SPECIAL PROVISIONS

                  PROVISIONS APPLICABLE TO BANKERS' ACCEPTANCES

The  term  "Bankers'  Acceptances"  means  bankers  acceptances  denominated  in
Canadian  Dollars which are issued by the Borrower and accepted by the Bank. The
term "RBPAF"  means the annual rate  announced  from time to time by the Bank as
its reference rate then in effect for determining  fees on bankers'  acceptances
accepted  by the Bank in Canada.  Bankers'  Acceptances  shall have a term of at
least  thirty  (30) days and not more than one  hundred  and  eighty  (180) days
excluding  days of grace.  Two business days prior written notice for the issue,
the reissue  and the method of  repayment  on maturity of a Bankers'  Acceptance
shall be given by the  Borrower  to the Bank and must be received by the Bank by
no later than 10:00 a.m. on the stipulated notice date. If the Borrower fails to
give  notification  to the  Bank  of  the  method  of  repayment  of a  Bankers'
Acceptance in accordance with the notice  requirements  set out above,  then the
Borrower shall be deemed to have converted the Bankers'  Acceptance into a Prime
Based Loan on the maturity date of the applicable Bankers' Acceptance.

                   PROVISIONS APPLICABLE TO PRIME BASED LOANS

The term "Prime Based  Loans"  means Prime rate based loans in Canadian  Dollars
made by the Bank to the  Borrower.  The term  "Prime"  means the annual  rate of
interest  announced  from time to time by the Bank as being its  reference  rate
then in effect for  determining  interest  rates on Canadian  Dollar  commercial
loans in Canada.

                   PROVISIONS APPLICABLE TO LETTERS OF CREDIT

The term  "Letters of Credit"  means letters of credit issued by the Bank at the
request  of the  Borrower.  Letters  of Credit  shall not be issued for a period
longer than one year without the prior  consent of the Bank.  Prior to utilizing
the Credit Facility by obtaining a Letter of Credit,  the Borrower shall deliver
to the Bank a  written  Letter  of  Credit  application  in form  and  substance
satisfactory  to the  Bank.  Each  such  application  shall be  executed  by the
authorized  signing  officers of the Borrower and delivered to the Bank at least
one  business  day  prior to the date on which  the  Letter  of  Credit is to be
issued.














<PAGE>


              GENERAL SECURITY AGREEMENT - FLOATING CHARGE ON LAND

     1.   SECURITY INTEREST

     (a) For value received,  the undersigned  ("Debtor") hereby grants to ROYAL
BANK OF CANADA  ("RBC") a security  interest,  mortgage and charge  (hereinafter
collectively referred to as the "Security Interest') as hereinafter provided:

          (i) a  security  interest  in the  undertaking  of  Debtor  and all of
     Debtor's present and after acquired  personal property  including,  without
     limitation,  all Goods  (including  all  parts,  accessories,  attachments,
     special tools, additions and accessions thereto),  Chattel Paper, Documents
     of title (whether negotiable or not), Instruments,  Intangibles,  Money and
     Securities  now owned or  hereafter  owned or  acquired  by or on behalf of
     Debtor  (including such as may be returned to or repossessed by Debtor) and
     including,  without limitation, all of the following now owned or hereafter
     owned or acquired by or on behalf of Debtor:

               (A) all Inventory of whatever kind and wherever situate;

               (B) all  equipment  (other than  Inventory)  of whatever kind and
          wherever situate, including, without limitation, all machinery, tools,
          apparatus,  plant,  furniture,  fixtures  and  vehicles of  whatsoever
          nature or kind;

               (C) all Accounts and book debts and  generally  all debts,  dues,
          claims,  choses  in  action  and  demands  of  every  nature  and kind
          howsoever arising or secured and whether arising in connection with an
          interest in real or personal property or otherwise,  including letters
          of credit and advices of credit,  which are now due, owing or accruing
          or growing due to or owned by or which may hereafter become due, owing
          or accruing or growing due to or owned by Debtor ("Debts");

               (D) all deeds, documents,  writings, papers, books of account and
          other books  relating to or being  records of Debts,  Chattel Paper or
          Documents  of title or by which such are or may  hereafter be secured,
          evidenced, acknowledged or made payable;

               (E) all contractual rights and insurance claims; and

               (F) all patents, industrial designs,  trade-marks,  trade secrets
          and know-how including without limitation environmental technology and
          biotechnology,   confidential  information,   trade-names,   goodwill,
          copyrights,  personality  rights,  plant breeders' rights,  integrated
          circuit topographies, software and all other forms of intellectual and
          industrial  property,  and  any  registrations  and  applications  for
          registration  of  any  of the  foregoing  (collectively  "Intellectual
          Property");

          (ii) a mortgage and charge as and by way of a floating charge,  in all
     of Debtor's  present and after  acquired  interest in property,  assets and
     undertaking  not secured in (i) above,  including all real,  immoveable and
     leasehold property and all easements, rights-of-way,  privileges, benefits,
     licences,   improvements   and  rights  whether   connected   therewith  or
     appurtenant  thereto  or  separately  owned  or  held,   including  without
     limitation, all structures, plant and other fixtures now owned or hereafter
     owned or  acquired  by or on  behalf of  Debtor  (hereinafter  collectively
     referred to as "Real Property"); and

          (iii)a security interest in all property  described in Schedule "C" or
     any replacement or additional Schedule "C" now or hereafter annexed hereto;

<PAGE>

                                                                    Page 2 of 15

and a Security Interest in all proceeds and renewals thereof, accretions thereto
and substitutions therefor, all of the foregoing being hereinafter  collectively
referred to as the "Collateral".

     (b) The Security  Interest  granted hereby shall not extend or apply to and
Collateral  shall not include the last day of the term of any lease or agreement
therefor but upon the  enforcement of the Security  Interest  Debtor shall stand
possessed  of such last day in trust to assign the same to any person  acquiring
such term.

     (c) The terms "Goods",  "Chattel Paper", "Document of Ttle",  "Instrument",
"Intangible",  "Security", "proceeds",  "Inventory",  "equipment",  "accession",
"Money",  "Account",  "financing  statement"  and "financing  change  statement"
whenever used herein shall be interpreted  pursuant to their respective meanings
when used in the Personal Property Security Act of the province where the herein
mentioned branch of RBC is located,  which Act, including amendments thereto and
anyAct substituted  therefor and amendments thereto is herein referred to as the
"P.P.S.A.".  Provided  always that the term  "Goods"  when used herein shall not
include  "consumer goods" of Debtor as that term is defined in the P.P.S.A.  and
the term  "Inventory"  when used herein shall  include  livestock  and the young
thereof  after  conception  and crops that  become  such during the term of this
Security  Agreement.  Any reference  herein to  "Collateral"  shall,  unless the
context  otherwise  requires,  be deemed a reference to  "Collateral or any part
thereof".

2.   INDEBTEDNESS SECURED

     The Security Interest granted hereby secures payment and performance of any
and all  obligations,  indebtedness  and  liability of Debtor to RBC  (including
interest thereon) present or future, direct or indirect, absolute or contingent,
matured or not, extended or renewed,  wheresoever and howsoever incurred and any
ultimate  unpaid  balance  thereof  and  whether  the same is from  time to time
reduced  and  thereafter  increased  or  entirely  extinguished  and  thereafter
incurred  again and whether  Debtor be bound alone or with another or others and
whether  as   principal   or  surety   (hereinafter   collectively   called  the
"lndebtedness").  If the Security  Interest in the Coliateral is not sufficient,
in the  event  of  default,  to  satisfy  all  Indebtedness  of  Debtor,  Debtor
acknowledges  and  agrees  that  Debtor  shall  continue  to be  liable  for any
Indebtedness  remaining  outstanding  and RBC shall be  entitled  to pursue full
payment thereof.

3.   REPRESENTATIONSAND WARRANTIES OF DEBTOR

     Debtor represents and warrants and so long as this Security Agreement
remains in effect shall be deemed to continuously represent and warrant that:

     (a) the  Collateral  is genuine  and owned by Debtor  free of all  security
interests, mortgages, liens, claims, charges, licences, leases, infringements by
third parties,  encumbrances  or other adverse ciaims or interests  (hereinafter
collectively  called  "Encumbrances"),  save for the Security Interest and those
Encumbrances  shown on  Schedule  "A" or  hereafter  approved in writing by RBC,
prior to their creation or assumption;

     (b) all Intellectual  Property applications and registrations are valid and
in good standing and Debtor is the owner of the appications and registrations;

     (c) each Debt,  Chattel  Paper and  Instrument  constituting  Collateral is
enforceable in accordance  with its terms against the party obligated to pay the
same (the "Account  Debtor"),  and the amount  represented by Debtor to RBC from
time to time as owing by each Account  Debtor or by all Account  Debtors will be
the correct amount actually and unconditionally  owing by such Account Debtor or
Account  Debtors,  except for normal cash  discounts  where  applicable,  and no
Account  Debtor will have any defence,  set off, claim or  counterclaim  against
Debtor which can be asserted  against RBC,  whether in any proceeding to enforce
Collateral or otherwise;



<PAGE>


                                                                    Page 3 of 15

     (d) the locations  specified in Schedule "B" as to business  operations and
records are accurate  and  complete and with respect to Real  Property and Goods
(including  Inventory)  constituting  Collateral,  the  locations  specified  in
Schedule  "B" are  accurate  and  complete  save for  Goods in  transit  to such
locations and Inventory on lease or consignment; and all buildings,  fixtures or
Goods about to become  fixtures and all crops and all oil, gas or other minerals
to be extracted and all timber to be cut which forms part of the Collateral will
be situate at one of such locations;

     (e) Debtor has disclosed to RBC all environmental and other matters which
could have a material effect on the financial condition or operations of Debtor;
and

     (f) the execution,  delivery and performance of the obligations  under this
Security  Agreement  and the creation of any security  interest in or assignment
hereunder  of  Debtor's  rights in the  Collateral  to RBC will not  result in a
breach of any agreement to which Debtor is a party.

4.   COVENANTS OFTHE DEBTOR

     So long as this Security Agreement remains in effect Debtor covenants and
agrees:

     (a) to defend the Collateral against the claims and demands of all other
parties  claiming the same or an interest  therein;  to diligently  initiate and
prosecute legal action against all infringers of Debtor~s rights in Intellectual
Property;  to take all reasonable  action to keep the  Collateral  free from all
Encumbrances,  except for the Security  Interest,  licences which are cumpulsory
under  federal or  provincial  legislation  and those shown in  Schedule  "A" or
hereafter approved in writing by RBC, prior to their creation or assumption; and
not to sell, exchange,  transfer, assign, lease, license or otherwise dispose of
Collateral or any interest  therein  without the prior  written  consent of RBC;
provided  always that,  until  default,  Debtor may, in the  ordinary  course of
Debtor's business,  sell or lease Inventory and, subject to Clause 7 hereof, use
Money available to Debtor;

     (b) to notify RBC promptly of:

          (i) any change in the information contained herein or in the Schedules
     hereto relating to Debtor, Debtor's business or Collateral;

          (ii) the details of any significant acquisition of Collateral;

          (iii) the  details of any  claims or  litigation  affecting  Debtor or
     Collateral;

          (iv) any loss or damage to Collateral;

          (v) any default by any Account Debtor in payment or other  performance
     of its obligations with respect to Collateral; and

          (vi) the return to or repossession by Debtor of Collateral;

     (c) to keep  Collateral in good order,  condition and repair and not to use
Collateral  in violation of the  provisions  of this  Security  Agreement or any
other agreement relating to Collateral or any policy insuring  Collateral or any
applicable  statute,  law, by-law,  rule,  regulation or ordinance;  to keep all
agreements, registrations and applications relating to Intellectual Property and
intellectual  property  used by Debtor in its  business in good  standing and to
renew all  agreements  and  registrations  as may be  necessary  or desirable to
protect  Intellectual  Property,  unless  otherwise agreed in writing by RBC; to
apply to register  all  existing and future  copyrights,  trade-marks,  patents,
integrated   circuit   topographies  and  industrial   designs  whenever  it  is
commercially reasonable to do so;

     (d) to do,  execute,  acknowledge  and deliver such  financing  statements,
financing  change  statements  and  further  assignments,   transfers,  caveats,
mortgages,  notices,  documents,  acts,  matters and things  (including  further
schedules  hereto) as may be  reasonably  requested by RBC of or with respect to
Collateral  in order to give effect to these  presents  and to pay all costs for
searches and filings in connection therewith;

<PAGE>

                                                                    Page 4 of 15

     (e) to pay all taxes, rates, levies, assessments and other charges of every
nature which may be lawfully  levied,  assessed or imposed against or in respect
of Debtor or Collateral as and when the same become due and payable;

     (f) to insure Collateral for such periods,  in such amounts,  on such terms
and against loss or damage by fire and such other risks as RBC shall  reasonably
direct with loss  payable to RBC and Debtor,  as insureds,  as their  respective
interests may appear, and to pay all premiums therefor;

     (g) to  prevent  Collateral,  save  Inventory  sold or leased as  permitted
hereby,  from being or becoming an  accession  to other  property not covered by
this Security Agreement;

     (h) to carry on and conduct the business of Debtor in  accordance  with all
applicable  laws,  in a proper and  efficient  manner  and so as to protect  and
preserve   Collateral  and  to  keep,  in  accordance  with  generally  accepted
accounting  principles,  consistently  applied,  proper  books  of  account  for
Debtor's   business  as  weil  as  accurate  and  complete  records   concerning
Collateral, and mark any and all such records and Collateral at RBC's request so
as to indicate the Security Interest; and

     (i) to deliver to RBC from time to time promptly upon request:

          (i) any Documents of Title, Instruments, Securities, Chattel Paper and
     duplicate certificates of title to Real Property constituting, representing
     or relating to Collateral;

          (ii)  all  books  of  account  and  all  records,   ledgers,  reports,
     correspondence,  schedules, documents, statements, lists and other writings
     relating to Collateral for the purpose of  inspecting,  auditing or copying
     the same;

          (iii) all  financial  statements  prepared by or for Debtor  regarding
     Debtor's business;

          (iv)  all  policies  and   certificates   of  insurance   relating  to
     Collateral; and

          (v)  such  information  concerning  Collateral,  Debtor  and  Debtor's
     business and affairs as RBC may reasonably request.

5.   USE AN D VERIFICATION OF COLLATERAL

     Subject to compliance with Debtor's covenants contained herein and Clause 7
hereof, Debtor may, until default,  possess, operate, collect, use and enjoy and
deal with Collateral in the ordinary  course of Debtor's  business in any manner
not inconsistent with the provisions hereof; provided always that RBC shall have
the right at any time and from time to time to verify  compliance by Debtor with
Debtor's  obligations under this Security Agreement (including through inquiries
with governmental agencies) and the existence and state of the Collateral in any
manner RBC may consider  appropriate and Debtor agrees to furnish all assistance
and  information  and to perform all such acts as RBC may reasonably  request in
connection  therewith  and for such purpose to grant to RBC or its agents access
to all places where  Collateral  may be located and to all premises  occupied by
Debtor.

6.   SECURITIES

     If Collateral at any time includes  Securities,  Debtor  authorizes  RBC to
transfer  the  same  or any  part  thereof  into  its  own  name  or that of its
nominee(s) so that RBC or its  nominee(s) may appear of record as the sole owner
thereof;  provided that, until default, RBC shall deliver promptly to Debtor all
notices  or  other  communications  received  by it or its  nominee(s)  as  such
registered  owner  and,  upon  demand and  receipt  of payment of any  necessary
expenses  thereof,  shall  issue to Debtor or its order a proxy to vote and take
all action with respect to such  Securities.  After  default,  Debtor waives all
rights  to  receive  any  notices  or  communications  received  by  RBC  or its
nominee(s)  as such  registered  owner and agrees that no proxy issued by RBC to
Debtor or its order as aforesaid shall thereafter be effective.
<PAGE>
                                                                    Page 5 of 15

7.   COLLECTION OF DEBTS

     Before or after default under this Security  Agreement,  RBC may notify all
or any Account Debtors of the Security Interest and may also direct such Account
Debtors to make all payments on Collateral to RBC. Debtor  acknowledges that any
payments on or other  proceeds  of  Collateral  received by Debtor from  Account
Debtors,  whether  before or after  notification  of this  Security  Interest to
Account  Debtors  and  whether  before  or after  default  under  this  Security
Agreement  shall be  received  and held by  Debtor in trust for RBC and shall be
turned over to RBC upon request.

8.   INCOME FROM AND INTEREST ON COLLATERAL

     (a)  Until  default,  Debtor  reserves  the  right  to  receive  any  Money
constituting  income from or interest on Collateral and if RBC receives any such
Money  prior  to  default,   RBC  shall  either  credit  the  same  against  the
Indebtedness or pay the same promptly to Debtor.

     (b)  After   default,   Debtor  will  not  request  or  receive  any  Money
constituting  income from or interest on Collateral  and if Debtor  receives any
such Money without any request by it, Debtor will pay the same promptly to RBC.

9.   INCREASES, PROFITS, PAYMENTS OR DISTRIBUTIONS

     (a) Whether or not default has occurred, Debtor authorizes RBC:

          (i) to receive any  increase in or profits on  Collateral  (other than
     Money) and to hold the same as part of Collateral.  Money so received shall
     be  treated as income  for the  purposes  of Clause 8 hereof and dealt with
     accordingly; and

          (ii) to  receive  any  payment  or  distribution  upon  redemption  or
     retirement or upon dissolution and liquidation of the issuer of Collaterai;
     to surrender  such  Collateral in exchange  therefor;  and to hold any such
     payment or distribution as part of Collateral.

     (b) If Debtor  receives any such increase or profits  (other than Money) or
payments or  distributions,  Debtor will deliver the same  promptly to RBC to be
held by RBC as herein provided.

10.  DISPOSITION OF MONEY

     Subject to any applicable  requirements of the P.P.S.A. or other applicable
law,  all Money  collected  or received by RBC pursuant to or in exercise of any
right it  possesses  with respect to  Collateral  shall be applied on account of
Indebtedness  in such manner as RBC deems best or, at the option of RBC,  may be
held  unappropriated in a collateral  account or released to Debtor, all without
prejudice  to the  liability of Debtor or the rights of RBC  hereunder,  and any
surplus shall be accounted for as required by law.

11.  EVENTS OF DEFAULT

     The happening of any of the following events or conditions shall constitute
default hereunder which is herein referred to as "default":

     (a) the nonpayment when due,  whether by acceleration or otherwise,  of any
principal or interest  forming part of  Indebtedness or the failure of Debtor to
observe or perform  any  obligation,  covenant,  term,  provision  or  condition
contained in this Security  Agreement or any other agreement  between Debtor and
RBC;

     (b) the death of or a declaration of  incompetency  by a court of competent
jurisdiction with respect to Debtor, if an individual;

     (c) the bankruptcy or insolvency of Debtor;  the filing against Debtor of a
petition in bankruptcy;  the making of an authorized  assignment for the benefit
of creditors by Debtor;  the  appointment of a receiver or trustee for Debtor or
for any assets of Debtor or the  institution  by or against  Debtor of any other
type of  insolvency  proceeding  under  the  Bankruptcy  and  Insolvency  Act or
otherwise;

<PAGE>

                                                                    Page 6 of 15

     (d)  the  institution  by or  against  Debtor  of any  formal  or  informal
proceeding for the dissolution or liquidation  of,  settlement of claims against
or winding up of affairs of Debtor;

     (e) if any Encumbrance  affecting  Collateral becomes  enforceable  against
Collateral;

     (f) if Debtor ceases or threatens to cease to carry on business or makes or
agrees to make a sale of a substantial  portion of Debtor's assets or commits or
threatens to commit an act of bankruptcy;

     (g) if any execution,  sequestration,  extent or other process of any court
becomes  enforceable  against  Debtor or if a distress or  analogous  process is
levied upon the assets of Debtor or any part thereof; and

     (h) if any certificate, statement, representation, warranty or audit report
heretofore  or hereafter  furnished by or on behalf of Debtor  pursuant to or in
connection  with  this  Security  Agreement  or  otherwise  (including,  without
limitation,  the  representations  and  warranties  contained  herein)  or as an
inducement  to RBC to extend  any  credit to or to enter  into this or any other
agreement with Debtor,  proves to have been false in any material respect at the
time as of which the facts therein set forth were stated or certified, or proves
to have omitted any substantial  contingent or  unliquidated  liability or claim
against  Debtor;  or if upon the date of execution of this  Security  Agreement,
there shall have been any material  adverse change in any of the facts disclosed
by any such certificate,  representation,  statement,  warranty or audit report,
which  change  shall not have been  disclosed  to RBC at or prior to the time of
such execution.

11A. REALPROPERTY

     (a) For all purposes,  including  without  limitation  any  application  to
register  a  crystailized  floating  charge  under the Land  Title Act  (British
Columbia)  against  any Real  Property,  the  floating  charge  created  by this
Security  Agreement  shall be  crystallized  and become a fixed  charge upon the
earliest of:

          (i) any one of the events described in Section 11 hereof;

          (ii) a declaration by RBC pursuant to Section 12 hereof; or

          (iii) RBC taking any action pursuant to Section 13 hereof to appoint a
     Receiver or to enforce  its  Security  Interest or realize  upon all or any
     part of the Collateral.

     (b) In  accordance  with  the  Property  Law Act  (British  Columbia),  the
doctrine of consolidation applies to this SecurityAgreement.

12.  ACCELERATION

     RBC, in its sole  discretion,  may declare all or any part of  Indebtedness
which is not by its terms payable on demand to be  immediately  due and payable,
without  demand  or notice of any  kind,  in the  event of  default,  or, if RBC
considers itself insecure or that the Collateral is in jeopardy.  The provisions
of this  clause  are not  intended  in any way to affect  any rights of RBC with
respect to any Indebtedness which may now or hereafter be payable on demand.

13.  REMEDIES

     (a) Upon  default,  RBC may appoint or reappoint by  instrument in writing,
any  person or  persons,  whether  an  officer or  officers  or an  employee  or
employees  of RBC or not, to be a receiver or  receivers  (hereinafter  called a
"Receiver", which term when used herein shall include a receiver and manager) of
Collateral (including any interest,  income or profits therefrom) and may remove
any Receiver so appointed  and appoint  another in its stead.  Any such Receiver
shall,  so far as concerns  responsibility  for its acts, be deemed the agent of
Debtor  and  not  RBC,  and RBC  shall  not be in any  way  responsible  for any
misconduct,  negligence or  non-feasance  on the part of any such Receiver,  its
servants,  agents or  employees.  Subject to the  provisions  of the  instrument
appointing  it,  any  such  Receiver  shall  have  power to take  possession  of
Collateral, to preserve Collateral or its value, to carry on or concur in



<PAGE>


                                                                    Page 7 of 15

carrying  on all or any part of the  business  of  Debtor  and to  sell,  lease,
license or  otherwise  dispose of or concur in selling,  leasing,  licensing  or
otherwise disposing of Collateral.  To facilitate the foregoing powers, any such
Receiver may, to the exclusion of all others,  including Debtor, enter upon, use
and occupy all premises owned or occupied by Debtor  constituting  Collateral or
wherein  Collateral  may be situate,  maintain  Collateral  upon such  premises,
borrow  money on a secured or  unsecured  basis and use  Collateral  directly in
carrying on Debtor's business or as security for loans or advances to enable the
Receiver to carry on Debtor's business or otherwise,  as such Receiver shall, in
its discretion, determine. Except as may be otherwise directed by RBC, all Money
received  from time to time by such  Receiver  in carrying  out its  appointment
shall be received in trust for and paid over to RBC. Every such Receiver may, in
the  discretion  of RBC,  be vested  with all or any of the rights and powers of
RBC.

     (b) Upon  default,  RBC may,  either  directly  or  through  its  agents or
nominees,  exercise  any or all of the powers and rights  given to a Receiver by
virtue of the foregoing sub-clause (a).

     (c) RBC may take possession of, collect, demand, sue on, enforce, recover
and  receive  Collateral  and give valid and  binding  receipts  and  discharges
thereof and in respect thereof and, upon default,  RBC may sell, lease,  license
or otherwise  dispose of  Collateral  in such manner,  at such time or times and
place or places, for such consideration and upon such terms and conditions as to
RBC may seem reasonable.

     (d) In addition to those rights granted  herein and in any other  agreement
now or hereafter in effect  between  Debtor and RBC and in addition to any other
rights RBC may have at law or in equity,  RBC shall have,  both before and after
default, all rights and remedies of a secured party under the P.P.S.A.  provided
always,  that RBC shall not be liable or accountable for any failure to exercise
its remedies,  take  possession of,  collect,  enforce,  realize,  sell,  lease,
license or otherwise  dispose of Collateral or to institute any  proceedings for
such  purposes.  Furthermore,  RBC shall have no obligation to take any steps to
preserve  rights  against  prior  parties to any  Instrument or Chattel Paper or
prior  encumbrancers  on any Real  Property  whether  Collateral or proceeds and
whether or not in RBC's  possession and shall not be liable or  accountable  for
failure to do so.

     (e) Debtor acknowledges that RBC or any Receiver appointed by it may take
possession of Collateral  wherever it may be located and by any method permitted
by law and Debtor  agrees upon request from RBC or any such Receiver to assemble
and deliver possession of Collateral at such place or places as directed.

     (f)  Debtor  agrees  to be liable  for and to pay all  costs,  charges  and
expenses  incurred by RBC or any  Receiver  or agent  appointed  by it,  whether
directly or for services rendered (including solicitors costs on a solicitor and
his own client  basis and auditors  costs and other legal  expenses and Receiver
and agent remuneration),  in operating Debtor's accounts, preparing or enforcing
this Security Agreement, inspecting and determining the state of the Collateral,
taking and maintaining custody of, preserving,  repairing, processing, preparing
for  disposition  and  disposing of  Collateral  and in enforcing or  collecting
Indebtedness and all such costs, charges and expenses, together with any amounts
owing as a result of any  borrowing by RBC or any  Receiver  appointed by it, as
permitted  hereby,  shall be a first  charge  on the  proceeds  of  realization,
collection or disposition of Collateral and shall be secured hereby.

     (g) RBC will give Debtor such notice,  if any, of the date,  time and place
of any  public  sale or of the date  after  which  any  private  disposition  of
Collateral is to be made as may be required by the P.P.S.A.  or other applicable
law.












<PAGE>


                                                                    Page 8 of 15

     (h) Upon default and receiving  written demand from RBC,  Debtor shall take
such further  action as may be necessary to evidence and effect an assignment or
licensing of Intellectual  Property to whomoever RBC directs,  including to RBC.
Debtor  apponts any officer or director or branch manager of RBC upon default to
be its attorney in accordance  with  applicable  legislation  with full power of
substitution  and to do on Debtor's  behalf anything that is required to assign,
license or transfer,  and to record any  assignment,  licence or transfer of the
Collateral.  This  power of  attorney,  which is  coupled  with an  iterest,  is
irrevocable until the release or discharge of the Security Interest.

14.  MISCELLANEOUS

      (a)  Debtor  hereby  authorizes  RBC to file  such  financing  statements,
financing change statements,  caveats,  mortgages,  forms,  security notices and
other documents and do such acts,  matters and things (including  completing and
adding schedules  hereto  identifying  Collateral or any permitted  Encumbrances
affecting  Collateral or identifying the locations at which Debtor's business is
carried on and Collateral and records  relating  thereto are situate) as RBC may
deem  appropriate  to perfect  on an ongoing  basis and  continue  the  Security
Interest,  to protect and preserve  Collateral  and to realize upon the Security
Interest and Debtor hereby  irrevocably  constitutes and appoints the Manager or
Acting Manager from time to time of the herein  mentioned branch of RBC the true
and lawful attorney of Debtor, with full power of substitution, to do any of the
foregoing in the name of Debtor whenever and wherever it may be deemed necessary
or expedient.

     (b) Without  limiting  any other  right of RBC,  whenever  Indebtedness  is
immediately  due and payable or RBC has the right to declare  indebtedness to be
immediately due and payable (whether or not it has so declared), RBC may, in its
sole discretion,  set off against  Indebtedness any and all amounts then owed to
Debtor by RBC in any  capacity,  whether or not due,  and RBC shall be deemed to
have  exercised  such  right to set off  immediately  at the time of making  its
decision  to do so even  though any charge  therefor is made or entered on RBC's
records subsequent thereto.

     (c) Upon Debtor's failure to perform any of its duties hereunder,  RBC may,
but shall not be obligated  to,  perform any or all of such  duties,  and Debtor
shall pay to RBC, forthwith upon written demand therefor, an amount equal to the
expense  incurred by RBC in so doing plus  interest  thereon  from the date such
expense is incurred until it is paid at the rate of 15% per annum.

     (d) RBC may grant extensions of time and other  indulgences,  take and give
up security, accept compositions,  compound,  compromise, settle, grant releases
and discharges and otherwise deal with Debtor,  debtors of Debtor,  sureties and
others  and  with  Collateral  and  other  security  as RBC may see fit  without
prejudice  to the  liability  of Debtor or RBC's  right to hoid and  realize the
Security Interest. Furthermore, RBC may demand, collect and sue on Collateral in
either Debtor's or RBC's name, at RBC's option, and may endorse Debtor's name on
any and all cheques,  commercial paper, and any other Instruments  pertaining to
or constituting Collateral.

     (e) No delay or omission by RBC in exercising any right or remedy hereunder
or with respect to any Indebtedness  shall operate as a waiver thereof or of any
other right or remedy,  and no single or partial exercise thereof shall preclude
any other or further  exercise  thereof or the  exercise  of any other  right or
remedy.  Furthermore,  RBC may remedy any  default by Debtor  hereunder  or with
respect to any Indebtedness in any reasonable manner without waiving the default
remedied and without  waiving any other prior or  subsequent  default by Debtor.
All rights and remedies of RBC granted or recognized  herein are  cumulative and
may be  exercised  at any  time  and  from  time  to  time  independently  or in
combination.

     (f) Debtor waives protest of any Instrument  constituting Collateral at any
time held by RBC on which Debtor is in any way liabie and,  subject to Clause 13
(g) hereof, notice of any other action taken by RBC.









<PAGE>

                                                                    Page 9 of 15

     (g) This  Security  Agreement  shall enure to the benefit of and be binding
upon the parties hereto and their respective heirs,  executors,  administrators,
successors  and assigns.  In any action  brought by an assignee of this Security
Agreement  and the  Security  Interest or any part thereof to enforce any rights
hereunder,  Debtor  shall not assert  against the  assignee any claim or defence
which Debtor now has or hereafter  may have against RBC. If more than one Debtor
executes this Security Agreement the obligations of such Debtors hereunder shall
be joint and several and, unless the context otherwise requires,  a reference to
"Debtor" herein shall be deemed to be a reference to each of the undersigned.

     (h) Save  for any  schedules  which  may be added  hereto  pursuant  to the
provisions  hereof, no modification,  variation or amendment of any provision of
this Security Agreement shall be made except by a written agreement, executed by
the parties  hereto and no waiver of any  provision  hereof  shall be  effective
unless in writing.

     (i)  Subject  to the  requirements  of  Clauses  13 (g)  and 14 0)  hereof,
whenever  either  party  hereto is  required or entitled to notify or direct the
other or to make a demand or request  upon the other,  such  notice,  direction,
demand or request shall be in writing and shall be  sufficiently  given,  in the
case of RBC, if delivered to it or sent by prepaid  registered mail addressed to
it at its  address  herein set forth or as changed  pursuant  hereto and, in the
case  of  Debtor,  if  deiivered  to it or if sent by  prepaid  registered  mail
addressed  to it at its last address  known to RBC.  Either party may notify the
other pursuant hereto of any change in such party's principal address to be used
for the purposes hereof.

     (j) This Security Agreement and the security afforded hereby is in addition
to and not in  substitution  for any other security now or hereafter held by RBC
and is intended to be a continuing  Security  Agreement and shall remain in full
force and effect  until the Manager or Acting  Manager  from time to time of the
herein  mentioned  branch of RBC shall  actually  receive  written notice of its
discontinuance; and, notwithstanding such notice, shall remain in full force and
effect  thereafter until all  Indebtedness  contracted for or created before the
receipt of such notice by RBC, and any extensions or renewals  thereof  (whether
made before or after receipt of such notice)  together  with  interest  accruing
thereon after such notice, shall be paid in full.

     (k) The headings used in this Security  Agreement are for convenience  only
and are not to be considered a part of this Security Agreement and do not in any
way limit or amplify the terms and provisions of this Security Agreement.

     (1) When the context so requires,  the singular  number shall be read as if
the plural  were  expressed  and the  provisions  hereof  shall be read with all
grammatical  changes  necessary  dependent  upon the person  referred to being a
male, female, firm or corporation.

     (m) In the event any provisions of this Security Agreement, as amended from
time to time, shall be deemed invalid or void, in whole or in part, by any Court
of competent  jurisdiction,  the remaining terms and provisions of this Security
Agreement shall remain in full force and effect.

     (n)  Nothing  herein  contained  shall in any way  obligate  RBC to  grant,
continue, renew, extend time for payment of or accept anything which constitutes
or would constitute Indebtedness.

     (o) The Security  Interest  created  hereby is intended to attach when this
Security Agreement is signed by Debtor and delivered to RBC.

     (p) Debtor  acknowledges  and agrees that in the event it amalgamates  with
any other  company or companies it is the  intention of the parties  hereto that
the term  "Debtor"  when used  herein  shall  apply to each of the  amalgamating
companies  and to the  amalgamated  company,  such  that the  Security  Interest
granted hereby:









<PAGE>

                                                                   Page 10 of 15

          (i) shall  extend  to  "Collateral"  (as that term is herein  defined)
     owned by each of the amalgamating  companies and the amalgamated company at
     the  time of  amalgamation  and to any  "Collateral"  thereafter  owned  or
     acquired by the amalgamated company; and

          (ii) shall secure the  "Indebtedness" (as that term is herein defined)
     of each of the amalgamating companies and the amalgamated company to RBC at
     the time of amalgamation and any "lndebtedness" of the amalgamated  company
     to RBC thereafter arising.

The  Security  Interest  shall  attach  to  "Collateral"  owned by each  company
amalgamating  with  Debtor,  and by the  amalgamated  company,  at the  time  of
amalgamation,  and shall attach to any "Collateral" thereafter owned or acquired
by the amalgamated company when such becomes owned or is acquired.

     (q) In the event that Debtor is a body corporate,  it is hereby agreed that
The  Limitation  of Civil  Rights Act of the  Province of  Saskatchewan,  or any
provision  thereof,  shall have no application to this Security Agreement or any
agreement or  instrument  renewing or extending or  collateral  to this Security
Agreement.  In the event that Debtor is an agricultural  corporation  within the
meaning of The  Saskatchewan  Farm Security Act, Debtor agrees with RBC that ail
of Part IV (other than Section 46) of that Act shall not apply to Debtor.

     (r) This Security Agreement and the transactions  evidenced hereby shall be
governed by and construed in accordance  with the laws of the province where the
herein  mentioned  branch of RBC is located  including,  where  applicable,  the
P.P.S.A. and the Land Title Act.

15.  COPY OF AGREEMENT AND FINANCING STATEMENT

     (a)  Debtor  hereby  acknowledges  receipt  of  a  copy  of  this  Security
Agreement.

     (b) Debtor waives Debtor's right to receive a copy of any financing
statement or financing  change  statement  registered by RBC or any verification
statement pertaining to a registration by RBC.




























<PAGE>


                                                                   Page 11 of 15

16.  RBC BRANCH ADDRESS:

               12th floor, 335- 8 Ave SW, Calgary, Alberta

17.  NAME AND ADDRESS OF DEBTOR

     Debtor represents and warrants that the following information is accurate:

          INDIVIDUAL DEBTOR







          BUSINESS DEBTOR

          NAME OF BUSINESS DEBTOR

               OLYMPIC SEISMIC LTD.

          ADDRESS OF BUSINESS DEBTOR

               3750, 205 - 5TH Avenue S.W. Calgary, Alberta T2P 2V7


































<PAGE>


                                                                   Page 12 of 15

IN WITNESS  WHEREOF  Debtor has  executed  this  Security  Agreement on the date
specified below.

WITNESS / OFFICER SIGNATURE*
(as to all signatures)



Name:


Address:


Professional
Capacity:

















* Officer certification required in B.C. only

* OFFICER CERTIFICATION
Your signature  constitutes a  representation  that you are a solicitor,  notary
public or other person authorized by the Evidence Act, R.S.B.C. 1979. c. 116, to
take affidavits for use in British Columbia and certifies the matters set out in
Part 5 of  the  Land  Title  Act as  they  pertain  to  the  execution  of  this
instrument.




















<PAGE>


                                                                   Page 13 of 15

                                  SCHEDULE "A"
                       (ENCUMBRANCES AFFECTING COLLATERAL)
























































<PAGE>


                                                                   Page 14 of 15

                                  SCHEDULE "B"




1.   Locations of Debtor's Business Operations



     3750, 205 - 5 Ave SW Calgary Alberta


2.   Locations of Records relating to Collateral (if different from 1. above)


     As above


3.   Locations of Collateral (if different from 1. above)


     As above


























<PAGE>


                                                                   Page 15 of 15

                                  SCHEDULE "C"
                            (DESCRIPTION OF PROPERTY)



                                       N/A


















































                                - END OF DOCUMENT





                                                                   EXHIBIT 10.52


                              Royal Bank of Canada
                            Oil & Gas Banking Centre
                           1100, 335 - 8th Avenue S.W.
                            Calgary, Alberta T2P 1C9
                               Fax: (403)292-3436


March 2, 2000

Olympic Seismic Ltd.
3750, 205 - 5 Ave. SW
Calgary, AB
T2P 2V7

Attention: Suzanne Bowden, Controller

Dear Sirs:

Re: Credit Facilities

We hereby confirm that the following  sections of the credit  facilities  letter
agreement  dated  November  9,1999 is hereby  amended by deleting  the  existing
provisions  of such  sections in its entirety  and  substituting  the  following
provisions:

 Amount:       The authorized  facility in the amount of $5,000,000 is available
 ------        on a margined basis year round.

Margin
Requirements:  Total advances under Segment 1) plus preferred claims, should not
- ------------   exceed 75% of good accounts  receivable  excluding  inter-company
               accounts,   holdbacks  and  the  entire  outstanding  balance  of
               accounts where any portion exceeds 90 days. The first  $2,000,000
               is available - on an unmargined basis.

The letter agreement is hereby amended by the foregoing amendment and the credit
facilities  available to the company will be governed by the  provisions  of the
letter agreement as amended by the provisions of this letter.

If you are in  agreement  with the  foregoing,  kindly  execute  and  return the
enclosed copy of this letter by no later than March 10, 2000.

Yours truly,        We acknowledge and accept the terms and conditions of
                    this agreement this    2      day of   March ,  2000.
                                         ------           -------

                    OLYMPIC SEISMIC LTD.

                    Per:             /s/ S. Bowden
                    Title:           Controller




 D.A. Majeski
 Manager, Energy Service & Supply





                                                                    EXHIBIT 21.1

                                  SEITEL, INC.

                     LIST OF SUBSIDIARIES OF THE REGISTRANT

**       African Geophysical, Inc. (incorporated in Cayman Islands)

**       Alternative Communication Enterprises, Inc. (incorporated in Texas)

         Datatel, Inc. (incorporated in Delaware)

         DDD Energy, Inc. (incorporated in Delaware)

**       EHI Holdings, Inc. (incorporated in Delaware)

**       Exsol, Inc. (incorporated in Delaware)

**       GEO-BANK, INC. (incorporated in Texas)

         Matrix Geophysical, Inc. (incorporated in Delaware)

*        Olympic Seismic Ltd. (incorporated in Alberta, Canada)

         Seitel Canada Holdings, Inc. (incorporated in Delaware)

         Seitel Data Corp. (incorporated in Delaware)

         Seitel Delaware, Inc. (incorporated in Delaware)

**       Seitel Gas & Energy Corp. (incorporated in Delaware)

**       Seitel Geophysical Inc. (incorporated in Delaware)

         Seitel International, Inc. (incorporated in Cayman Islands)

         Seitel Management, Inc. (incorporated in Delaware)

**       Seitel Natural Gas, Inc. (incorporated in Delaware)

         Seitel Offshore Corp. (incorporated in Delaware)

**       Seitel Power Corp. (incorporated in Delaware)

*        818312 Alberta Ltd. (incorporated in Delaware)






*        Incorporated in 1999
**       Dormant




                                                                    EXHIBIT 23.1



                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS




As independent  public  accountants,  we hereby consent to the  incorporation by
reference  of our report  included  in this Form  10-K,  into the  Seitel,  Inc.
previously filed Form S-3 Registration Statements File Nos. 33-71968,  33-78554,
33-80574, 33-89890,  333-71545,  333-85671, and Form S-8 Registration Statements
File Nos. 33-36914, 33-78560,  33-89934,  333-01271,  333-12549,  333-63383, and
333-64557.




ARTHUR ANDERSEN LLP


Houston, Texas
March 29, 2000





                                                                    EXHIBIT 23.2






                      GARB GRUBBS HARRIS & ASSOCIATES, INC.
                  (Formerly Forrest A. Garb & Associates, Inc.)
                       INTERNATIONAL PETROLEUM CONSULTANTS
                        5310 HARVEST HILL ROAD, SUITE 160
                            DALLAS, TEXAS 75230-5805
                       TEL: 972.788.1110 FAX: 972.991.3160
                           email: [email protected]



                   CONSENT OF INDEPENDENT PETROLEUM ENGINEERS
                   ------------------------------------------



Garb Grubbs Harris & Associates, Inc., petroleum consultants,  hereby consent to
the  incorporation by reference in any registration  statement or other document
filed with the Securities and Exchange  Commission by Seitel,  Inc., our reserve
report dated  December  31, 1999,  and to all  references  to our firm  included
therein.


                                 Garb Grubbs Harris & Associates, Inc.


                                 By:         /s/ Ronald L. Grubbs
                                             -----------------------------------
                                 Name:       Ronald L. Grubbs
                                             -----------------------------------
                                 Title:      Chief Executive Officer
                                             -----------------------------------
                                 Dallas, Texas
                                 March 29, 2000


<TABLE> <S> <C>


<ARTICLE>                     5

<S>                                      <C>

<PERIOD-TYPE>                                 12-MOS
<FISCAL-YEAR-END>                        DEC-31-1999
<PERIOD-END>                             DEC-31-1999
<CASH>                                         5,188
<SECURITIES>                                       0
<RECEIVABLES>                                 63,859
<ALLOWANCES>                                   1,183
<INVENTORY>                                        0
<CURRENT-ASSETS>                                   0<F1>
<PP&E>                                       212,201<F2>
<DEPRECIATION>                                59,614
<TOTAL-ASSETS>                               555,919
<CURRENT-LIABILITIES>                              0<F1>
<BONDS>                                      225,223
                              0
                                        0
<COMMON>                                         243
<OTHER-SE>                                   242,781
<TOTAL-LIABILITY-AND-EQUITY>                 555,919
<SALES>                                      128,707
<TOTAL-REVENUES>                             128,707
<CGS>                                          5,016
<TOTAL-COSTS>                                  5,016
<OTHER-EXPENSES>                                   0
<LOSS-PROVISION>                                   0
<INTEREST-EXPENSE>                            11,791
<INCOME-PRETAX>                               16,518
<INCOME-TAX>                                   7,138
<INCOME-CONTINUING>                            9,380
<DISCONTINUED>                                     0
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                                   9,380
<EPS-BASIC>                                      .39
<EPS-DILUTED>                                    .39

<FN>
<F1> The Company does not present a classified balance sheet; therefore, current
     assets and current liabilities are not reflected in the Company's financial
     statements.

<F2> PP&E does not include  seismic data bank assets with a cost of $629,380,000
     and related accumulated amortization of $299,495,000.


</FN>


</TABLE>


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