EX-99.1

                                                                    Exhibit 99.1


                            Explanation of Responses


(1)  Third Point Management Company L.L.C. ("Third Point") may be deemed to have
     beneficial ownership over 6,860,000 shares (the "Shares") of Common Stock
     of Seitel, Inc. (the "Common Stock"), and to have had beneficial ownership
     over warrants to purchase Common Stock ("Warrants"), by virtue of the
     authority granted to Third Point by certain managed funds and accounts
     (collectively, the "Funds") to vote and to dispose of the Shares and to
     dispose of such Warrants. Mr. Daniel S. Loeb ("Mr. Loeb") serves as
     managing member of Third Point and by virtue of such position may be deemed
     to have beneficial ownership over the Shares and to have had beneficial
     ownership over the foregoing Warrants. Mr. Loeb also serves as a director
     of Third Point Offshore Fund, Ltd. (the "Offshore Fund" and, together with
     Third Point and Mr. Loeb, the "Reporting Persons"), one of the Funds. In
     connection with its reorganization, Seitel, Inc. issued Warrants to various
     persons. Information as to the specific amounts and timings of exercises of
     such Warrants by all such persons was not and is not readily available to
     the Reporting Person. The resulting aggregate outstanding amount of Common
     Stock and the Reporting Persons' resulting ownership percentage, were not
     readily available to the Reporting Persons prior to August 3, 2004. This
     filing reports the beneficial ownership of the Reporting Persons in the
     event such filing was or is required. The Reporting Persons hereby disclaim
     any beneficial ownership of the securities reported herein for purposes of
     Section 16 of the Securities Exchange Act of 1934 (the "Act") except to the
     extent of their pecuniary interest therein as determined in accordance with
     the Act and the rules adopted thereunder. This report includes all
     transactions occurring through the date of this filing.

(2)  As of the close of trading on July 19, 2004.

EX-99.2

                                                                    Exhibit 99.2


                         FORM 4 JOINT FILER INFORMATION

          (Attachment to Form 4 in accordance with instruction 4(b)(v))

Check this box if no longer subject to Section 16: [ X ]

Name and Address:                          Daniel S. Loeb
                                           360 Madison Ave, 24th floor
                                           New York, NY 10017
Date of Event Requiring Statement:         7/19/04
Issuer and Ticker Symbol:                  Seitel, Inc. [SELA]
Relationship to Issuer:                    10% Owner
Designated Filer:                          Third Point Management Company L.L.C.

TABLE I INFORMATION
Title of Security:                         Common Stock
Transaction Date:                          July 19, 2004
Transaction Code:                          X
Securities Acquired:                       634,661
Price:                                     $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:       5,926,052 (2)
Ownership Form:                            I
Nature of Indirect Beneficial Ownership:   (1)

Title of Security:                         Common Stock
Transaction Date:                          July 19, 2004
Transaction Code:                          X
Securities Acquired:                       217,956
Price:                                     $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:       5,926,052 (2)
Ownership Form:                            I
Nature of Indirect Beneficial Ownership:   (1)

Title of Security:                         Common Stock
Transaction Date:                          July 19, 2004
Transaction Code:                          X
Securities Acquired:                       183,257
Price:                                     $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:       5,926,052 (2)
Ownership Form:                            I
Nature of Indirect Beneficial Ownership:   (1)




Title of Security:                           Common Stock
Transaction Date:                            July 19, 2004
Transaction Code:                            X
Securities Acquired:                         373,529
Price:                                       $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:         5,926,052 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Security:                           Common Stock
Transaction Date:                            July 19, 2004
Transaction Code:                            X
Securities Acquired:                         2,453,513
Price:                                       $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:         5,926,052 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Security:                           Common Stock
Transaction Date:                            July 19, 2004
Transaction Code:                            X
Securities Acquired:                         1,063,087
Price:                                       $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:         5,926,052 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Security:                           Common Stock
Transaction Date:                            July 19, 2004
Transaction Code:                            X
Securities Acquired:                         49
Price:                                       $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:         5,926,052 (2)
Ownership Form:                              D


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.




Nature of Indirect Beneficial Ownership:     N/A


Title of Security:                           Common Stock
Transaction Date:                            July 30, 2004
Transaction Code:                            P
Securities Acquired:                         425,000
Price:                                       $1.08
Amount of Securities Beneficially Owned
    Following Reported Transactions:         6,351,003
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Security:                           Common Stock
Transaction Date:                            August 2, 2004
Transaction Code:                            P
Securities Acquired:                         508,997
Price:                                       $1.08
Amount of Securities Beneficially Owned
    Following Reported Transactions:         6,860,000
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

TABLE II INFORMATION
Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 123,839
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 634,661
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.




Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 44,246
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 217,956
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 37,201
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 183,257
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 75,828
Date Exercisable:                            Immediately


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.




Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 373,529
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 498,074
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 2,453,513
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)

Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 215,811
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 1,063,087
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.




Ownership Form:                              I
Nature of Indirect Beneficial Ownership:     (1)



Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 10
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 49
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0 (2)
Ownership Form:                              D
Nature of Indirect Beneficial Ownership:     N/A

Signature:                                   /s/ Daniel S. Loeb
                                             ------------------------------
                                             Daniel S. Loeb


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.

EX-99.3

                                                                    Exhibit 99.3


                         FORM 4 JOINT FILER INFORMATION
          (Attachment to Form 4 in accordance with instruction 4(b)(v))

Check this box if no longer subject to Section 16: [ X ]


Name and Address:                          Third Point Offshore Fund, Ltd.
                                           360 Madison Ave, 24th floor
                                           New York, NY 10017
Date of Event Requiring Statement:         7/19/04
Issuer and Ticker Symbol:                  Seitel, Inc. [SELA]
Relationship to Issuer:                    10% Owner
Designated Filer:                          Third Point Management Company L.L.C.

TABLE I INFORMATION


Title of Security:                         Common Stock
Transaction Date:                          July 19, 2004
Transaction Code:                          X
Securities Acquired:                       2,453,513
Price:                                     $0.60
Amount of Securities Beneficially Owned
    Following Reported Transactions:       2,951,587
Ownership Form:                            D
Nature of Indirect Beneficial Ownership:   N/A


Title of Security:                         Common Stock
Transaction Date:                          July 30, 2004
Transaction Code:                          P
Securities Acquired:                       375,000
Price:                                     $1.08
Amount of Securities Beneficially Owned
    Following Reported Transactions:       3,326,587
Ownership Form:                            D
Nature of Indirect Beneficial Ownership:   N/A

Title of Security:                         Common Stock
Transaction Date:                          August 2, 2004
Transaction Code:                          P
Securities Acquired:                       272,163
Price:                                     $1.08




Amount of Securities Beneficially Owned
    Following Reported Transactions:         3,598,750
Ownership Form:                              D
Nature of Indirect Beneficial Ownership:     (1)


TABLE II INFORMATION

Title of Derivative Security:                Warrants to Purchase Common Stock
Exercise Price of Derivative Security:       $0.60
Transaction Date:                            7/19/04
Transaction Code:                            X
Number of Derivative Securities Disposed of: 498,074
Date Exercisable:                            Immediately
Expiration Date:                             August 2, 2004
Title of Underlying Securities:              Common Stock
Amount of Underlying Shares:                 2,453,513
Price of Derivative Security:                $0
Number of Derivative Securities
    Beneficially Owned Following
    Reported Transactions:                   0
Ownership Form:                              D
Nature of Indirect Beneficial Ownership:     N/A


Signature:                                   THIRD POINT OFFSHORE FUND, LTD.


                                             By: /s/ Daniel S. Loeb
                                                 ------------------------------
                                                 Name:  Daniel S. Loeb
                                                 Title: Director


**Intentional misstatements or omissions of facts constitute Federal Criminal
Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If
      space is insufficient, see Instruction 6 for procedure.