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Exhibit 31.2

Sarbanes-Oxley Section 302(a) Certification

We, Marcia H. Kendrick and Robert D. Monson, certify that:

|1. | We have reviewed this  quarterly report on Form 10-Q/A, 
Amendment No. 1, of Seitel, Inc.; (the "Registrant")                                                                                                                                                                                                                    
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|2. | Based on our knowledge, this  quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this

quarterly report;
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|3. | Based on our knowledge, the financial statements, and other financial information included in this

quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this

quarterly report;                   
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|4. | The Registrant's other certifying officer and
we are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:                                                                                                     
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|   | b)                                                                                                                                                                                                                                                                                                                               
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|   | c)                                                                                                                                                                                                                                                                                                                               
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|5. | The Registrant's other certifying officer and
we have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):                                 
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|   | a)                                                                                                                                                                                                                                                                                                                               
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|   | b)                                                                                                                                                                                                                                                                                                                               





Date: June
1, 2004/s/ Robert D. MonsonRobert D.
Monson
Principal Financial Officer
commencing May 10, 2004/s/ Marcia H. KendrickMarcia H.
Kendrick
Principal Financial Officer for the
quarter ended March 31, 2004 and for the period April 1, 2004 to May 10, 2004




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