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.