13D Filing: Bienville Argentina Opportunities Master Fund, Lp and Eco-Stim Energy Solutions Inc. (NYSE:ESES)

Item 1. Security and Issuer

The securities covered by this Schedule 13D relate to the Reporting Persons’ (as defined in Item 2 below) beneficial ownership interest in the common stock, $0.001 par value, of Eco Stim Energy Solutions, Inc., a Nevada corporation (the “Issuer”).  The Issuer’s principal executive office is located at 2930 W. Sam Houston Pkwy No., Suite 275, Houston, TX 77043.

Item 2. Identity and Background

(a) This Statement is being filed pursuant to Rule 13d-1(a) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), by each of the following entities (collectively, “Reporting Persons”):

1.

Bienville Argentina Opportunities Fund 2.0, LP, a Delaware exempted limited partnership (“Argentina Fund 2”)

3.

Bienville Argentina Opportunities Master Fund, LP, a Cayman Islands exempted limited partnership (“Argentina Fund”);

4.

The General Partner, a Delaware limited liability company;

5.

Bienville Capital Management, LLC, a Delaware limited liability company (“Investment Manager”);

6.

William Herbert Stimpson, II

7.

Michael Cullen Thompson, Jr.

8.

Donald Stoltz, III

(b)	Residence or business address

1.

Argentina Fund 2 is registered in Delaware and the address of its principal office is with its principal office at 521 Fifth Avenue, 35th Fl, NYC, NY 10175.

2.

General Partner 2 is a Delaware limited liability company and the address of its principal office is 521 Fifth Avenue, 35th Fl, NYC, NY 10175.

3.

The Argentina Fund is registered in Delaware and the address of its principal office is 521 Fifth Avenue, 35th Fl, NYC, NY 10175.

4.

The General Partner, is a Delaware limited liability company and its principal office is with its principal office at 521 Fifth Avenue, 35th Fl, NYC, NY 10175.

5

Bienville Capital Management, LLC, is a Delaware limited liability company and its principal office is located at 521 5th Avenue, 35th Floor New York, NY 10175.

6.

The principal residence of William Herbert Stimpson II is 60 White Oak Shade Rd., New Canaan, CT, 06840.

7

The principal residence of Michael Cullen Thompson, Jr. is 29839 Cuthbert Rd. Malibu, CA, 90265.

8.

The principal residence of Donald Stoltz, III is 12 Vanderbilt Drive Livingston, NJ 07039.

(c)

Argentina Fund and Argentina Fund 2 are principally engaged in the business of investing in other companies. The General Partner and General Partner 2 are principally engaged in the business of serving as the general partner to certain funds, including Argentina Fund and Argentina Fund 2. The Investment Manager is principally engaged in the business of providing investment advisory services and consulting services. Mr. Stimpson, Mr. Thompson, and Mr. Stoltz are employed by the Investment Manager.