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Exhibit B Power of Attorney
Know all by these presents, that each of the undersigned hereby constitutes and appoints Jonathan Barrett as the undersigneds true and lawful
attorneys-in-fact to:
(1) execute for and on behalf of the undersigned, in the undersigneds capacity as an officer, director or beneficial owner of
Common Shares of Select Energy Services, Inc. (the Issuer), the Statement on Schedule 13G (or Schedule 13D, if applicable) in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the Act),
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 Statement on Schedule 13G (or Schedule 13D, if applicable) and all amendment(s) thereto and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority;
(3) execute for and on behalf of the undersigned, in the undersigneds capacity as an officer, director or beneficial owner of Common Shares of the
Issuer, to sign any reports on Form 3 (Initial Statement of Beneficial Ownership of Securities), Form 4 (Statement of Changes in Beneficial Ownership of Securities) and Form 5 (Annual Statement of Beneficial Ownership of Securities) relating to
transactions by the undersigned in Common Shares or other securities and all amendments thereto in accordance with Section 16 of the Act, and the rules thereunder; and
(4) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorneys-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 attorneys-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 attorneys-in-fact may approve in such attorneys-in-facts discretion.
The undersigned hereby grant to such
attorneys-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 attorneys-in-fact, or such attorneys-in-facts 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 foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is
the Issuer assuming, any of the undersigneds responsibilities to comply with Sections 13(d) or 16 of the Act and the rules thereunder.
This Power
of Attorney shall remain in full force and effect until the undersigned is no longer required to (i) file a Statement on Schedule 13G or Schedule 13D with respect to the undersigneds holdings of and transactions in securities issued by
the Issuer or (ii) report transactions and holdings on Forms 3, 4 and 5, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.
[Signatures to Follow]
