Document:

<PAGE>
                                                                   EXHIBIT 10.24

                 AMENDMENT NUMBER ONE TO AGREEMENT FOR PURCHASE
                 AND ASSIGNMENT OF FOREIGN ACCOUNTS RECEIVABLE

         THIS AMENDMENT NUMBER ONE TO AGREEMENT FOR PURCHASE AND ASSIGNMENT OF
FOREIGN ACCOUNTS RECEIVABLE (this "Amendment"), dated effective as of January 7,
2002, is entered into by and between Grant Geophysical (Int'l), Inc., a Texas
corporation ("Grant"), and Elliott Associates, L.P., a Delaware Limited
Partnership ("Elliott"), as follows:

         WHEREAS, Grant and Elliott are parties to that certain Agreement for
Purchase of Foreign Accounts Receivable dated August 3, 2001 ( "Agreement").

         WHEREAS, Grant has requested that certain provisions of the Agreement
be amended, so as to provide for:

                  a)  an increase in the maximum amount purchased by Elliott
                      from Grant of billed and unbilled foreign accounts
                      receivable up to $5,250,000; and;

                  b)  an extension of the term of the Agreement to September 30,
                      2002.

         WHEREAS, subject to the conditions set forth in this Amendment, Grant
and Elliott have agreed to amend the Agreement as set forth below:

         NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants, conditions, and provisions as hereinafter set forth, the parties
hereto agree as follows:

         1. AMENDMENT OF SUB-PARAGRAPH 2 IN THE PREAMBLE OF THE AGREEMENT. The
Preamble of the Agreement is hereby amended to read in its entirety as follows:

         "WHEREAS, Elliott agrees to purchase from Grant up to a maximum of Five
Million Two-Hundred Fifty Thousand USD ($5,250,000), at any point in time,
commencing August 3, 2001 and extending through September 30, 2002;" and;

         2. AMENDMENT OF SECTION 1. OFFER OF ACCOUNTS IN THE AGREEMENT. Section
1 of the Agreement is hereby amended by substitution of "Five Million
Two-Hundred Fifty Thousand USD ($5,250,000)" for "Four Million USD
($4,000,000)".

         3. AMENDMENT OF SECTION 6 IN THE AGREEMENT. Section 6 of the Agreement
is hereby amended by substitution of September 30, 2002 for February 28, 2002.

         4. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations and
warranties made herein and in the Agreement shall survive the execution and
delivery of this Amendment, and no investigation by Elliott or any closing shall
affect the representations and warranties or the right of Elliott to rely upon
them.

<PAGE>

         5. REFERENCE TO AGREEMENT. The Agreement, as amended hereby, and all
other Exhibits thereto, whether now or hereafter executed and delivered, are
hereby amended so that any reference to the Agreement shall mean a reference to
the Agreement, as amended by this Amendment.

         6. SEVERABILITY. Any provision of this Amendment held by a court of
competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this Amendment and the effect thereof shall be
confined to the provision so held to be invalid or unenforceable.

         7. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and shall
inure to the benefit of Elliott and Grant and their respective successors and
assigns, except Grant may not assign or transfer any of its rights or
obligations hereunder without the prior written consent of Elliott.

         8. COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

         9. FACSIMILE TRANSMISSION OF SIGNATURES. Any party to this Amendment
may indicate its intention to be bound by its execution and delivery of this
Amendment by its signature to the signature page hereof and the delivery of the
signature page hereof, to the other party or its representatives by facsimile
transmission or telecopy. The delivery of a party's signature on the signature
page by facsimile transmission or telecopy shall have the same force and effect
as if such party signed and delivered this Amendment in person.

IN WITNESS WHEREOF, the parties hereto, heretofore duly authorized, have
executed this Agreement to be effective as of the date first set forth above.

Address for Notices:                GRANT GEOPHYSICAL, (INT'L.) INC.

16850 Park Row
Houston, Texas  77084               by: /s/ THOMAS L. EASLEY
Fax:  (281) 398-9996                  ------------------------------------------
                                    Name:   Thomas L. Easley
                                    Title:  Executive Vice President-Finance
                                            & Administration

Address for Notices:                ELLIOTT ASSOCIATES, L.P.

712 Fifth Avenue
New York, NY 10019                  by: /s/ JON POLLOCK
Fax:  (212) 586-9428                   -----------------------------------------
                                    Name:   Jon Pollock
                                    Title:  Senior Portfolio Manager<PAGE>
                                                                   EXHIBIT 10.25

               AMENDMENT NUMBER TWO TO AGREEMENT FOR PURCHASE AND
                   ASSIGNMENT OF FOREIGN ACCOUNTS RECEIVABLE

         THIS AMENDMENT NUMBER TWO TO AGREEMENT FOR PURCHASE AND ASSIGNMENT OF
FOREIGN ACCOUNTS RECEIVABLE (this "Amendment"), dated effective as of February
5, 2002, is entered into by and between Grant Geophysical (Int'l), Inc., a Texas
corporation ("Grant"), and Elliott Associates, L.P., a Delaware Limited
Partnership ("Elliott"), as follows:

         WHEREAS, Grant and Elliott are parties to that certain Agreement for
Purchase of Foreign Accounts Receivable dated August 3, 2001 ( "Agreement").

         WHEREAS, Grant has requested that certain provisions of the Agreement
be amended, so as to provide for:

                  a)  an increase in the maximum amount purchased by Elliott
                      from Grant of billed and unbilled foreign accounts
                      receivable up to $7,500,000; and;

                  b)  an extension of the term of the Agreement to September 30,
                      2002.

         WHEREAS, subject to the conditions set forth in this Amendment, Grant
and Elliott have agreed to amend the Agreement as set forth below:

         NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants, conditions, and provisions as hereinafter set forth, the parties
hereto agree as follows:

         1. AMENDMENT OF SUB-PARAGRAPH 2 IN THE PREAMBLE OF THE AGREEMENT. The
Preamble of the Agreement is hereby amended to read in its entirety as follows:

         "WHEREAS, Elliott agrees to purchase from Grant up to a maximum of
Seven Million Five Hundred Thousand USD ($7,500,000), at any point in time,
commencing August 3, 2001 and extending through September 30, 2002;" and;

         2. AMENDMENT OF SECTION 1. OFFER OF ACCOUNTS IN THE AGREEMENT. Section
1 of the Amendment No. 1 dated January 7, 2002 is hereby amended by substitution
of "Seven Million Five Hundred Thousand USD ($7,500,000)" for "Five Million
Two-hundred Fifty USD ($5,250,000)".

         3. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations and
warranties made herein and in the Agreement shall survive the execution and
delivery of this Amendment, and no investigation by Elliott or any closing shall
affect the representations and warranties or the right of Elliott to rely upon
them.

         4. REFERENCE TO AGREEMENT. The Agreement, as amended hereby, and all
other Exhibits thereto, whether now or hereafter executed and delivered, are
hereby amended so that

<PAGE>

any reference to the Agreement shall mean a reference to the Agreement, as
amended by this Amendment.

         5. SEVERABILITY. Any provision of this Amendment held by a court of
competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this Amendment and the effect thereof shall be
confined to the provision so held to be invalid or unenforceable.

         6. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and shall
inure to the benefit of Elliott and Grant and their respective successors and
assigns, except Grant may not assign or transfer any of its rights or
obligations hereunder without the prior written consent of Elliott.

         7. COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

         8. FACSIMILE TRANSMISSION OF SIGNATURES. Any party to this Amendment
may indicate its intention to be bound by its execution and delivery of this
Amendment by its signature to the signature page hereof and the delivery of the
signature page hereof, to the other party or its representatives by facsimile
transmission or telecopy. The delivery of a party's signature on the signature
page by facsimile transmission or telecopy shall have the same force and effect
as if such party signed and delivered this Amendment in person.

IN WITNESS WHEREOF, the parties hereto, heretofore duly authorized, have
executed this Agreement to be effective as of the date first set forth above.

Address for Notices:            GRANT GEOPHYSICAL, (INT'L.) INC.

16850 Park Row
Houston, Texas  77084           by: /s/ WILLIAM H. FREEMAN
Fax:  (281) 398-9996               ---------------------------------------------
                                Name:   William H. Freeman
                                Title:  Treasurer

Address for Notices:            ELLIOTT ASSOCIATES, L.P.

712 Fifth Avenue
New York, NY 10019              by: /s/ JON POLLOCK
Fax:  (212) 586-9428              ----------------------------------------------
                                Name:   Jon Pollock
                                Title:  Sr. Portfolio Manager

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00038-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00038-of-00352.parquet"}]]