Exhibit 23 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in the following Registration Statements previously filed by TETRA Technologies, Inc. of our report dated February 21, 2001, with respect to the consolidated financial statements and schedule of TETRA Technologies, Inc. and subsidiaries included in the Annual Report (Form 10-K) for the year ended December 31, 2000: Form S-3 (No. 33-99810) Form S-4 (No. 33-80881) Form S-8 (No. 33-40509) 1996 Stock Option Plan for Non-Executive Employees and Consultants Form S-8 (No. 33-41337) 401(k) Retirement Plan Form S-8 (No. 33-35750) 1990 Stock Option Plan Form S-8 (No. 33-76804) 1993 Director Stock Option Plan Form S-8 (No. 33-76806) 1990 Stock Option Plan Form S-8 (No. 333-04284) 401(k) Retirement Plan Form S-8 (No. 333-09889) 1990 Stock Option Plan Houston, Texas March 27, 2001