JOINT FILING AGREEMENT

         The undersigned each agree as follows: (i) that certain Amendment to
the Statement on Schedule 13D relating to the Common Stock, par value $.01 per
share, of Varco International, Inc., a Delaware corporation, is filed on behalf
of each of them, (ii) such Statement on Schedule 13D is adopted by each of them,
(iii) all future amendments to such Statement on Schedule 13D will, unless
written notice to the contrary is delivered as described below, be jointly filed
on behalf of each of them, and (iv) the provisions of Rule 13d-1(f)(1) under the
Securities Exchange Act of 1934, as amended, apply to each of them. This
Agreement may be terminated with respect to the obligation to file jointly
future amendments to such Statement on Schedule 13D as to any of the undersigned
upon such person giving written notice thereof to each of the other persons
signatory hereto, at the principal office thereof.

         EXECUTED as of July 1, 2002.


                              SCF-III, L.P.
                              By:  SCF-II, L.P.
                                   By:  L.E. Simmons & Associates, Incorporated
                                        By:  /s/ ANTHONY DELUCA
                                            ------------------------------------
                                            Anthony DeLuca, Managing
                                            Director

                              SCF-II, L.P.
                              By:  L.E. Simmons & Associates, Incorporated
                                   By:  /s/ ANTHONY DELUCA
                                       -----------------------------------------
                                       Anthony DeLuca, Managing Director

                              D.O.S. PARTNERS, L.P.
                              By:  SCF Partners, L.P.
                                   By:  L.E. Simmons & Associates, Incorporated
                                        By:  /s/ ANTHONY DELUCA
                                            ------------------------------------
                                            Anthony DeLuca, Managing
                                            Director

                              FGSI PARTNERS, L.P.
                              By:  SCF Partners, L.P.
                                   By:  L.E. Simmons & Associates, Incorporated
                                        By:  /s/ ANTHONY DELUCA
                                            ------------------------------------
                                            Anthony DeLuca, Managing
                                            Director


                                       18



                              SCF PARTNERS, L.P.
                              By:  L.E. Simmons & Associates, Incorporated
                                   By:  /s/ ANTHONY DELUCA
                                       -----------------------------------------
                                       Anthony DeLuca, Managing Director


                              L.E. SIMMONS & ASSOCIATES, INCORPORATED
                              By:  /s/ ANTHONY DELUCA
                                  ----------------------------------------------
                                  Anthony DeLuca, Managing Director

                              L.E. SIMMONS

                              /s/ L.E. SIMMONS
                              --------------------------------------------------
                              L.E. Simmons, individually




                                       19