EcoStim is an oilfield services company providing well stimulation services in the US and Argentina. The presentation highlights: 1) EcoStim has secured multiple new contracts in 2017 anchoring a second crew in the US and a long-term contract in Argentina, positioning it for accelerated growth. 2) EcoStim trades at an attractive valuation compared to peers based on enterprise value per hydraulic horsepower. 3) EcoStim utilizes proprietary downhole diagnostic and predictive technologies to more efficiently target completion stages, reducing costs for customers.

1. Enercom's Oil & Gas Conference
August 2017
Nasdaq Ticker: ESES

2. This presentation contains statements about future events and expectations that can be characterized as
forward-looking statements, including, in particular, statements about the Company’s plans, strategies and
prospects. The use of the words “anticipate,” “plan,” “seek,” “intend,” “estimate,” “expect,” “may,” “should,”
“could,” “project,” “believe” and similar expressions are intended to identify forward looking statements.
Examples of forward-looking statements include, but are not limited to, all statements we make relating to
revenue, earnings, margins, profitability, growth rates, and other financial results for future periods. By their
nature, forward-looking statements speak only as of the date they are made; are not statements of historical
fact or guarantees of future performance; and are subject to risks, uncertainties, assumptions or changes in
circumstances that are difficult to predict or quantify. Although the Company believes that the plans, intentions
and expectations reflected in or suggested by such forward-looking statements are reasonable, they do involve
certain assumptions, risks and uncertainties, and the Company cannot assure you that those expectations will
prove to have been correct. Actual results could differ materially from those anticipated in these forward-
looking statements as a result of factors described in this presentation and other risks, including the risks
identified in the Company's Annual Report on Form 10-K for the period ended December 31, 2016 and other
risks identified in the Company's Quarterly Report on Form 10-Q for the period ended March 31, 2017. Many of
these factors are beyond the Company’s ability to control or predict. The Company cannot assure you that its
future results will meet its expectations and investors are cautioned not to place undue reliance on any
forward-looking statement made by the Company or its authorized representatives. All subsequent written and
oral forward-looking statements attributable to the Company and persons acting on its behalf are qualified in
their entirety by the cautionary statements contained in this paragraph, elsewhere in this presentation, and in
the Company's periodic reports on file with the Securities and Exchange Commission. The Company does not
have any obligation or undertaking to disseminate any updates or revisions to any forward-looking statement
contained in this presentation or the admission document to reflect any change in the Company’s expectations
about the statement or any change in events, conditions or circumstances on which the statement is based.
2
Safe Harbor Provision

3. Technology-Driven, Growth Platform in Leading Plays
3
• Headquartered in Houston, Texas
• Total capacity: currently ~100,000 HHP, with an agreement to purchase additional
45,000 HHP
• High-growth oilfield service company providing well stimulation, coiled tubing, and
reservoir field management services
• Strategic growth-focused sponsor in Fir Tree Partners
– ~67% ownership post equity raises
• Commenced U.S. Operations in Oklahoma
– One year contract in place; started in May 2017
– Second contract signed in July 2017; to start in October 2017
– Exploring potential for 3rd crew to be added from cash flow in 2018
• Initial Operation in Argentina
– Started with conventional oil market and transitioned to tight gas market in
2016; Started new two year contract on 4/1/2017
– ~23,000 HHP in Argentina; more equipment to be added upon receipt of
profitable contractual commitments
• Differentiated, Proven Technologies – Turbine Powered Equipment
– Reduce footprint, horsepower required and capital cost
– Emissions well below required Tier 4; among the lowest methane escape
engines in the industry
– Lower fuel costs versus traditional diesel powered engine technologies
Argentina holds the
world’s 3rd largest
technically recoverable
shale gas resources
and 4th largest
technically recoverable
shale oil resources(1)
Company Overview
STACK / SCOOP
Leading unconventional plays
(1) U.S. EIA June 2013

4. J. Chris Boswell
President, CEO and
Co-Founder
Alexander Nickolatos
Chief Financial Officer and
Assistant Secretary
Carlos A. Fernandez
Sr. VP, Corp. Development
General Mgr., Latin America
and Co-Founder
Relevant Experience
• 28+ years senior management oilfield experience
• 15+ years experience in finance and accounting
• 35+ years senior management experience in Latin America
Bobby Chapman
VP Business Development
• 35+ years senior management oilfield experience
Miguel Di Vincenzo
VP, Sales & Technology
• 28 years oilfield services experience in Latin America
Seasoned Management Team
Barry Ekstrand
Chief Operating Officer
• 35+ years senior management oilfield experience
4

5. Investment Highlights
5
Poised for Growth through Recent Contract Awards and Increased
Utilization
Debt Free Balance Sheet
Significant Discount to Peers Based on Enterprise Value to Hydraulic
Horsepower (HHP)
Experienced Management Team with Committed Investors
Currently Working in Leading Unconventional Markets in the U.S. and
Argentina
Attractive Technologies with Multi-Fuel Turbine Pumps and Down Hole
Diagnostics Capability
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6. Recent History
6
1/26/17: Secured 1st contract in US
5/3/17: Announced 2-year contract in Argentina
3/6/17: Completed Recapitalization of Company
5/30/17: Commenced work in OK under one year contract
6/20/17: Notes converted to common equity at $1.40 per share, leaving
debt free balance sheet
7/19/17: Signed new contract in OK to support 2nd well stimulation spread
EcoStim has emerged from the dramatic
decline in commodity prices debt free,
and well positioned to capitalize on
recoveries in the U.S. and Argentina
7/7/17: Closed $15mm private placement at $1.50 per share
7/27/17: Signed agreement to purchase 45,000 HHP to support new contract in OK
8/8/17: Closed $28mm private placement at $1.43 per share (market price)

7. Contracts Awarded with Multiple Customers
• Management has demonstrated its ability to execute during a period of market instability with three
contracts awarded since Q1 2017
• The Company capitalizing on growing activity in the best North America shale plays and an improving
pricing environment and a long-term contract with the largest operator in Argentina
7
Schedule of Customer Agreements
Year 2017 2018 2019
Month 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12
YPF
Midstates
July 2017 Contract
YPF Midstates July 2017 Contract
Commitment
• Take or pay contract on initial 10
stages per month
• Commitment to first call on 100% of
completions activity
• Commitment to first call on
completions activity in STACK /
SCOOP
Agreement
Expiration
• April 2019
• Contract expires May 2018
• Customer option to extend 2nd year
• Contract expires one year from
declaration of readiness, estimated to
be October 2018
• Customer option to extend 2nd year

8. $0.7 $0.9
$2.0 $2.0
$3.0
$8.0
$5.0
$10.0
$0
$2
$4
$6
$8
$10
4Q2016A 1Q2017A July 2017E Pro Forma
Argentina U.S.
1 1 1 1
1
2
2
3
0
1
2
3
4Q2016A 1Q2017A July 2017 Pro Forma
Argentina U.S.
New Contract Anchors Second Crew & Offers Accelerated Growth
8
Active Fleets Average Monthly Revenue ($ in MM)
(1) First U.S. contract operational on 5/23/17
(2) Second U.S. contract signed on 7/19/17 – estimated to begin operations by 10/1/17
(3) October 2017 pro forma estimate assumes that the second U.S. contract supports 2nd well stimulation spread; incremental revenues
assume utilization in line with first spread for the month of July 2017, assuming that customers continue their current build out plans
(1) (2) (1) (2,3)

9. $1,943
$1,697
$1,016
$100
$0
$500
$1,000
$1,500
$2,000
$2,500
1,159
820
465
145
0
200
400
600
800
1,000
1,200
1,400
Attractive Value Relative to Peers Based on an Enterprise Value to HHP Basis
9
Total Enterprise Value ($MM)
Total Current HHP (k)
Total Enterprise Value / Total Current HHP ($)
$1,677
$2,070
$2,185
$692
$0
$500
$1,000
$1,500
$2,000
$2,500
(1, 4)
(4)(2) (3)
(4)(2) (3)
(1)
Note: Enterprise Value reflects 3/31/2017 balance sheet adjusted for footnoted proforma events, and July 25, 2017 market prices courtesy of FactSet.
(1) Total current HHP excludes fleets awaiting delivery. Keane HHP adjusted for RockPile Energy Services acquisitionon 7/3/17, C&J HHP disclosed in 10-Q filing as of 3/31/17, ProPetro HHP disclosed in Q1 2017 earnings call on 5/11/17
(2) C&J TEV adjusted for 4/21/17 follow-on equity offering
(3) EcoStim TEV and HHP includes 16.6mm shares from the offering, $22.7mm of net proceeds. Assumes $40mm unfunded capital expenditures. EcoStim HHP is proformaassuming applicationof net proceeds
$827
$120

10. Opportunities in Oklahoma
10
• The STACK, SCOOP, Merge, Springer formations are
among the leading unconventional plays in North
America with a low breakeven point
• 13 Acre Base in Fairview also offers access to Miss
Lime, Anadarko, Cleveland and other active basins
• The STACK, SCOOP, MERGE, SPRINGER plays can
deliver strong returns even at lower oil prices - Eco-Stim base of operation
(1) Oil and Gas Investor November 18, 2016
(2) Baker Hughes Rig Count as of July 21, 2017
86
76
67
62
57 57 59 62
66
72
77
82
89
102
109
125 121
130
134
0
20
40
60
80
100
120
140
160
Jan
'16
Feb
'16
Mar
'16
Apr
'16
May
'16
Jun
'16
Jul
'16
Aug
'16
Sep
'16
Oct
'16
Nov
'16
Dec
'16
Jan
'17
Feb
'17
Mar
'17
Apr
'17
May
'17
Jun
'17
Jul
'17
STACK / SCOOP Other OK Rigs
Oklahoma Monthly Rig Count(2)
North Central Oklahoma Highlights

11. Offering SummaryArgentina’s growth opportunity is unique
1. Geology – Resource produces
economic hydrocarbons
2. Pace of activity – Sufficient wells to
maintain good equipment
utilization
3. Demand for hydrocarbons –
Production consumed locally or
export potential
4. Infrastructure – Roads, housing,
fuel, pipelines and support services
5. Local knowledge – Feet on the
ground; local network
6. Business risk – Regulations, taxes,
security, culture, ethics, etc.
Source: EIA and Accenture.
11
Key Selection Criteria For International Shale
Market Opportunities

12. Opportunities in Argentina
12
Drilling days per horizontal well
• Most major US shale plays
consume 2.5 - 3 million HHP
• Argentina is importing a
significant volume of gas at
high prices
• Supply / Demand equation
should favor much stronger
prices as activity ramps to full
manufacturing mode
• ESES is well positioned

13. What has changed in Argentina following Kirchner?
 New pro-business, free markets President in Macri
 Natural Gas prices set at $7.50 declining to $6.00 in 2021
 Currency controls removed
 New trade agreement with US & rejoins IMF
 New deal between government, labor unions, and energy
companies to reduce cost and double investment
13

14. Mature oil producing country with strong
customer base
E&P Companies Operating in Argentina
Source: Management research
14

15. Supermajors taking large positions

16. Argentina now focused on growing gas production; high prices locked in
Rigs starting back to work, barriers to entry remain
16
Barriers to Entry:
• Importation of new stimulation equipment is still challenging
• Any new equipment into country must be negotiated with at least 3 agencies (Ministry of Industry, Department
of Trade, and Customs Office)
• Matching agreements need to be negotiated with local vendors
• Government still favors protectionist policies to support local industry
• Repatriation of dollars has been difficult historically; still scares some competitors

17. Technology

18. Offering Summary“You can’t manage what you don’t measure”
• Leverages fiber-optic technology and predictive modeling (how many stages don’t actually produce hydrocarbons?)
• Enables Eco-Stim to efficiently predict stimulation effectiveness and understand the shale in real-time
1. Predict
3. Measure
4. Evaluate
Prediction
Proprietary process to efficiently
predict “sweet spots” in shale plays
Stimulate all planned stages
as designed
Downhole technologies to determine
which stages are actually producing
Compare prediction of
sweet spots to actual
production
“Learn” best producing areas of the
formation in a given area and
incorporate information into next
geophysical prediction
5. Update
Model
2. Execute
Predict, Execute, Measure, Evaluate, Re-Predict
Eco-Stim conducts its horizontal stimulation services within a systematic methodology
18

19. Offering Summary
Geophysical & Geo-mechanical predictive tools to identify
“sweet spots” in higher cost shale formations
Technology used primarily in high cost regions
30 Ft
Flare
7610
5 Ft
Flare
7970
5 Ft
Flare
8630
5 Ft
Flare
8742
3 Ft
Flare
9659
4 Ft
Flare
10480
4 Ft
Flare
11305
Targeted Sweet Spots
-
+
• Using technology for accurate
well placement and
stimulation stage planning
• Maps produced in less than
three weeks at minimal cost
• Over 350 shale projects
completed in U.S. shale plays
• Over 25 projects completed in
Argentina
Curvature Attributes
• Best production correlate with
Geo-Predict sweet spot
mapping – confirming the
effectiveness of Geo-Predict
methodology
19

20. Offering SummaryMEASURE & EVALUATE - Confirmation of producing zones…..
… Derived from Fiber Optic Acoustic Signatures
TIME
Gas Production from zone 6
Gas + Water Production
from zone 8
9 7 6 5 4 3 2 18
20

21. Offering Summary
UPDATE MODEL & CALIBRATE - Target completion stages based
on technology & empirical data in high cost regions
32 Stages @ $100k / Stage = $3.2 Million
16 Stages @ $200k / Stage = $1.6 Million
21

22. Combined Fleet Offers Technology Well Suited to Reduce Cost and Emissions
145,000 HHP available within ESES; over
54,000 HHP (27,000 HHP currently in use)
represents differentiated technology to
reduce cost and emissions:
 Capable of running on 100% natural gas
 Runs on multiple fuel sources including
natural gas, CNG, LNG and Diesel
 Delivers emissions 65% below EPA Tier 4
requirements
 Delivers high HHP from a light weight
engine
 As only current operator of this type of
equipment, significant operational know-
how and trade secrets being developed
22
Portion of Fleet Has Competitive Advantage

23. Investment Highlights
23
Poised for Growth through Recent Contract Awards and Increased
Utilization
Debt Free Balance Sheet
Significant Discount to Peers Based on Enterprise Value to Hydraulic
Horsepower (HHP)
Experienced Management Team with Committed Investors
Currently Working in Leading Unconventional Markets in the U.S. and
Argentina
Attractive Technologies with Multi-Fuel Turbine Pumps and Down Hole
Diagnostics Capability
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24. 2930 W. Sam Houston Pkwy N., Suite 275
Houston, TX 77043
NASDAQ – ESES
www.ecostim-es.com