Eco-Stim Energy Solutions, Inc.

2930 West Sam Houston Parkway N., Suite 275

Houston, TX 77043


September 26, 2017




United States Securities and Exchange Commission

Division of Corporation Finance

100 F Street, N.E.

Washington, D.C. 20549

Attention: H. Roger Schwall, Office of Natural Resources


  Re: Eco-Stim Energy Solutions, Inc.
    Registration Statement on Form S-3
    Filed September 8, 2017
    File No. 333-220402


Ladies and Gentlemen:


In accordance with Rule 461 under the Securities Act of 1933, Eco-Stim Energy Solutions, Inc. (the “Company”) respectfully requests that the effective date for the Registration Statement referred to above be accelerated so that it will be declared effective at 4:00 p.m., Eastern Time, on September 27, 2017, or as soon thereafter as is practicable.


Please direct any questions or comments regarding the foregoing to Andrew Smetana of Vinson & Elkins L.L.P., the Company’s legal counsel, by telephone at (512) 542-8417. Thank you in advance for your assistance.


  Very truly yours,
  By: /s/ J. Christopher Boswell
  Name: J. Christopher Boswell
  Title: President and Chief Executive Officer


cc: Alexander Nickolatos, Chief Financial Officer of Eco-Stim Energy Solutions, Inc.
  Andrew Smetana, Vinson & Elkins L.L.P.