Power of Attorney

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Bass C. Wallace, Jr. and Kimberly
M. O'Brien, signing singly, and with full power of substitution,
as the undersigned's true and lawful attorney-in-fact to:

1.	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of TETRA
Technologies, Inc. (the "Company") Form ID and Forms 3, 4, and
5 (including amendments thereto) in accordance with Section
16(a) of the Securities Exchange Act of 1934 and the rules
thereunder;

2.	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such Form ID, 3, 4, or 5, complete and execute any
amendment or amendments thereto, and timely file such form with
the United States Securities and Exchange Commission and any
stock exchange, self-regulatory association or any other
authority, and provide a copy as required by law or as
advisable to such persons as the attorney-in-fact deems
appropriate; and

3.	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of each such attorney-in-
fact, may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact's
discretion.

The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully
to all intents and purposes as the undersigned might or could do
if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the forgoing attorneys-in-fact,
in serving in such capacity at the request of the undersigned, are
not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.

The undersigned further agrees that each such attorney-in-fact may
rely entirely on information furnished orally or in writing by or
at the direction of the undersigned to the attorney-in-fact. The
undersigned also agrees to indemnify and hold harmless the Company
and each such attorney-in-fact against any losses, claims, damages
or liabilities (or actions in these respects) that arise out of or
are based upon any untrue statements or omissions of necessary
facts in the information provided by or at the direction of the
undersigned, or upon the lack of timeliness in the delivery of
information by or at the direction of the undersigned, to such
attorney-in-fact for purposes of executing, acknowledging,
delivering or filing Form 3, 4 or 5 (including amendments
thereto).

This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4, and 5
(including amendments thereto) with respect to the undersigned's
holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact. This Power of
Attorney revokes all other powers of attorney that the undersigned
has previously granted concerning the matters described herein.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this
8th day of August, 2017.


Signature /s/ William D. Sullivan

Print Name: William D. Sullivan
TETRA Technologies, Inc.