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Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We have issued our report dated February 27, 2017, with respect to the consolidated financial statements of FTS International, Inc. contained in the Registration Statement and Prospectus. We consent to the use of the aforementioned report in the Registration Statement and Prospectus, and to the use of our name as it appears under the caption "Experts."
/s/ GRANT THORNTON LLP
Dallas, Texas
October 30, 2017
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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM