=============================================================================
                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                 SCHEDULE 13D
                Under the Securities and Exchange Act of 1934

                             (Amendment No. 10)1

                                  Seitel, Inc.
               ------------------------------------------------
                               (Name of Issuer)

                        Common Stock, $0.01 Par Value
                ------------------------------------------------
                        (Title of Class of Securities)

                                  816074405
                ------------------------------------------------
                               (CUSIP Number)

                           Allison Bennington, Esq.
                              ValueAct Capital
                       435 Pacific Avenue, Fourth Floor
                          San Francisco, CA  94133
                               (415) 362-3700
                ------------------------------------------------
                 (Name, address and telephone number of Person
                 Authorized to Receive Notices and Communications)

                         Christopher G. Karras, Esq.
                                 Dechert LLP
                                  Cira Centre
                                2929 Arch Street
                          Philadelphia, PA 19104-2808
                                (215) 994-4000

                               October 31, 2006
                ------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of 240.13d.1(e), 240.13d.1(f) or 240.13d.1(g), check the
following box [ ].

Note:  Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 240.13d.7 for other
parties to whom copies are to be sent.

1The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

This information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
=============================================================================


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 2 of 16
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Master Fund, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS (See Instructions)*

   WC*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION                British Virgin Islands

-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         56,779,454**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        56,779,454**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    56,779,454**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    33.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 3 of 16
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   Seitel Holdings, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         9,459,460**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        9,459,460**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    9,459,460**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    5.6%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    OO (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
             INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
               (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE
                                ATTESTATION.



                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 4 of 16
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   VA Partners, L.L.C.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 5 of 16
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 6 of 16
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 7 of 16
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   Jeffrey W. Ubben
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

---------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   United States
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    IN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                             Page 8 of 16
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   George F. Hamel, Jr.
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   United States
-----------------------------------------------------------------------------
                   7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES          8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH     9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    IN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 816074405                                              Page 9 of 16
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   Peter H. Kamin
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
---------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   United States
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         66,238,914**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        66,238,914**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    66,238,914**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    38.9%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    IN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5



THE PURPOSE OF THIS AMENDMENT NO. 10 IS TO AMEND THE PURPOSE OF TRANSACTION
SECTION. IN ADDITION, THE OWNERSHIP PERCENTAGES OF THE REPORTING PERSONS HAVE
BEEN UPDATED TO REFLECT A CHANGE IN OWNERSHIP AMONG THE REPORTING PERSONS AND
NUMBER OF OUTSTANDING SHARES OF COMMON STOCK AS SET FORTH IN THE ISSUER'S
FORM 10-Q FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2006. THE INFORMATION
BELOW SUPPLEMENTS THE INFORMATION PREVIOUSLY PROVIDED.

Item 3.  Source and Amount of Funds or Other Consideration

       The information set forth or incorporated by reference in Item 4 is
incorporated herein by reference.

Item 4.  Purpose of Transaction

     On October 31, 2006, Seitel Holdings, LLC ("Parent"), a wholly-owned
subsidiary of ValueAct Capital Master Fund, L.P. ("ValueAct Capital Master
Fund"), entered into an Agreement and Plan of Merger (the "Merger
Agreement") with Seitel Acquisition Corp., a Delaware corporation and a
wholly-owned subsidiary of Parent ("Merger Sub"), and Seitel, Inc., a
Delaware corporation (the "Company").  Pursuant to the Merger Agreement,
among other things, the Merger Sub will be merged with and into the Company
(the "Merger"), with the Company continuing as the surviving company and a
wholly-owned subsidiary of Parent.  At the effective time of the Merger,
each outstanding share of Common Stock, other than any shares owned by
ValueAct Capital Master Fund, Parent, Merger Sub, the Company or its
subsidiaries and any stockholders who are entitled to and who properly
exercise appraisal rights under Delaware law, will be cancelled and
converted into the right to receive $3.70 in cash, without interest.

     Parent has obtained equity and debt financing commitments from Morgan
Stanley, Deutsche Bank AG and UBS and affiliates thereof for the
transactions contemplated by the Merger Agreement, the aggregate proceeds
of which will be sufficient for Parent to pay the aggregate merger
consideration and all related fees and expenses. Consummation of the Merger
is subject to a debt financing condition and various other conditions,
including approval of the Merger by the Company's stockholders, expiration
or termination of applicable waiting periods under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, and other customary closing conditions.
In addition to approval of the Merger by the Company's stockholders as
required under Delaware law, consummation of the Merger is also subject to
the approval by the holders of a majority of the shares of Common Stock not
held by ValueAct Capital Master Fund or Parent and voted at the
stockholders' meeting on the Merger.  The parties expect to close the
transaction by early 2007.

     The Merger Agreement may be terminated under certain circumstances,
including if the Company's Board of Directors has determined in good faith
that it has received a superior proposal and otherwise complies with
certain terms of the Merger Agreement.  Upon the termination of the Merger
Agreement, under specified circumstances, the Company will be required to
reimburse Parent for its transaction expenses up to $1,000,000 and under
specified circumstances, the Company will be required to pay Parent a
termination fee of $17,000,000.



                              Page 10 of 16



     As an inducement and a condition to entering into the Merger
Agreement, and as part of the transactions contemplated by the Merger
Agreement, (i) ValueAct Capital Master Fund agreed to assign and transfer,
and did so assign and transfer, 9,459,460 shares of Common Stock
beneficially owned by ValueAct Capital Master Fund to Parent and (ii)
Parent entered into a Support Agreement, dated as of October 31, 2006,
among ValueAct Capital Master Fund, Parent and the Company (the "Support
Agreement").  Under the terms of the Support Agreement, ValueAct Capital
Master Fund and Parent have agreed to vote their shares of Common Stock in
favor of the Merger Agreement or, in the event that additional conditions
in the Merger Agreement and the Support Agreement have been met, any
agreement that results from and includes a superior proposal approved by
the Board of Directors following the satisfaction of certain conditions,
and to maintain Parent's unencumbered ownership of its 9,459,460 shares of
Common Stock through the later of the effective time of the Merger or the
resolution of any dispute between the Company and Parent relating to the
Merger Agreement, unless cash is substituted therefor following a
termination of the Support Agreement.  ValueAct Capital Master Fund also
agreed to maintain its ownership of Common Stock until the termination of
the Support Agreement.

     The foregoing summary of the Merger Agreement and the Support
Agreement and the transactions contemplated thereby does not purport to be
complete and is subject to, and qualified in its entirety by, the full text
of the Merger Agreement, which is filed as Exhibit 2.1 to the Company's
Current Report on Form 8-K filed November 2, 2006, and the Support
Agreement, which is filed as Exhibit 2.2 to the Company's Current Report on
Form 8-K filed November 2, 2006, each of which is incorporated herein by
reference.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER

     ValueAct Master Fund is the beneficial owner of 56,779,454 shares of
Common Stock (including 15,037,568 shares issuable upon exercise of
Purchase Warrants), representing approximately 33.3% of the Issuer's
outstanding Common Stock.  Seitel Holdings, LLC is the beneficial owner of
9,459,460 shares of Common Stock, representing 5.6% of the Issuer's
outstanding Common Stock.  VA Partners,  ValueAct Management L.P., ValueAct
Management LLC and the Managing Members may each be deemed the beneficial
owner of an aggregate of 66,238,914 shares of Common Stock (including
15,037,568 shares issuable upon exercise of Purchase Warrants),
representing approximately 38.9% of the Issuer's outstanding Common Stock.
All percentages set forth in this Schedule 13D assume that the Issuer has
170,309,818 outstanding shares of Common Stock. This includes 155,272,250
outstanding shares as reported in the Issuer's Form 10-Q for the quarter
period ended September 30, 2006 and the issuance of an additional 15,037,568
shares upon the exercise of 15,037,568 Purchase Warrants beneficially owned
by the Reporting Persons.  One Purchase Warrant represents the right to
purchase one share of the Issuer's Common Stock, at an exercise price of
$.72 per share, exercisable at any time during the period ending on
08/12/11.


                              Page 11 of 16


Item 6.     Contracts, Arrangements, Understandings or Relationships with
Respect to Securities of the Issuer

       The information set forth, or incorporated by reference, in Items 3
through 5 is incorporated herein by reference.

       Other than as described elsewhere in this Report and as previously
reported, the Reporting Persons have no understandings, arrangements,
relationships or contracts relating to the Issuer's Common Stock which are
required to be described hereunder.

Item 7.		Material to Be Filed as Exhibits

A)    Joint Filing Agreement



                              Page 12 of 16


                                  SIGNATURE
              After reasonable inquiry and to the best of his knowledge and
belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

                               POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below on this Schedule 13D hereby constitutes and appoints Jeffrey W. Ubben,
George F. Hamel, Jr. and Peter H. Kamin, and each of them, with full power to
act without the other, his or its true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for him or it and in his
or its name, place and stead, in any and all capacities (until revoked in
writing) to sign any and all amendments to this Schedule 13D, and to file the
same, with all exhibits thereto and other documents in connection therewith,
with the Securities and Exchange Commission, granting unto said attorneys-in
fact and agents, and each of them, full power and authority to do and perform
each and every act and thing requisite and necessary fully to all intents and
purposes as he or it might or could do in person, thereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or
their or his substitute or substitutes, may lawfully do or cause to be done
by virtue hereof.

                              ValueAct Capital Master Fund L.P., by
                              VA Partners, L.L.C., its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member

                              Seitel Holdings, LLC, by
                              VA Partners, L.L.C., its Manager

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member

                              VA Partners, L.L.C.

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member


                               ValueAct Capital Management, L.P., by
                               ValueAct Capital Management, LLC its
                               General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member


                              Page 13 of 16





                               ValueAct Capital Management, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member



                              By:    /s/  Jeffrey W. Ubben
                                --------------------------------------
Dated:  November 2, 2006        Jeffrey W. Ubben, Managing Member


                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member


                              By:    /s/  Peter H. Kamin
                                --------------------------------------
Dated:  November 2, 2006        Peter H. Kamin, Managing Member


                              Page 14 of 16

  
                                 Exhibit A
                          JOINT FILING UNDERTAKING
The undersigned parties hereby agree that the Schedule 13D filed herewith
(and any amendments thereto) relating to the Common Stock of Seitel, Inc. is
being filed jointly on behalf of each of them with the Securities and
Exchange Commission pursuant to Section 13(d) of the Securities Exchange Act
of 1934, as amended.

                              ValueAct Capital Master Fund L.P., by
                              VA Partners, L.L.C., its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member



                              Seitel Holdings, LLC, by
                              VA Partners, L.L.C., its Manager

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member



                              VA Partners, L.L.C.

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member




                               ValueAct Capital Management, L.P.,
                               by, ValueAct Capital Management, LLC
                               its General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member



                               ValueAct Capital Management, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member


                              Page 15 of 16



                              By:    /s/  Jeffrey W. Ubben
                                --------------------------------------
Dated:  November 2, 2006        Jeffrey W. Ubben, Managing Member


                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  November 2, 2006        George F. Hamel, Jr., Managing Member


                              By:    /s/  Peter H. Kamin
                                --------------------------------------
Dated:  November 2, 2006        Peter H. Kamin, Managing Member



                              Page 16 of 16