THE NEW STANDARDIN FRACTURING INNOVATIONSTHE NEW STANDARDIN FRACTURING INNOVATIONS

U.S. Well Services, LLC, provides high-pressure, hydraulic fracturing services in unconventional oil and natural gas basins. Both our conventional (diesel) and Clean Fleet® (electric) hydraulic fracturing �eets are among the most reliable and highest performing �eets in the industry, with the capability to meet the most demanding pressure and rate requirements in the industry.

Since our formation in 2012, U.S Well Services has experienced phenomenal growth in terms of our customer base, operating areas, �eet size, and product development. Always keen to expand on our successes, U.S Well Services total Company HHP is at ~419,000.

Our management team has extensive industry experience providing completion services to exploration and production companies. We focus on the most active shale and unconventional oil and natural gas plays in the United States where we believe we will have a competitive advantage due to the high performance and durability of our equipment and our ability to support high asset utilization rates that result in more e�cient operations.

OUR VALUES

SAFETYWe don’t compromise the health, safety or

environment of customers, employeesor communities.

CUSTOMER SATISFACTIONWe focus on meeting customer

expectations while improving the cost and delivery of services.

RETURN ON INVESTMENTWe meet or exceed the expectations of those who have placed their faith in us.

GROWTHWe are focused on creating greater

opportunities for our employees and our investors.

Clean Fleet® pump truck with totally independent, twin 1750 HHP engines (3500 total HHP per trailer)

Clean Fleet® runs on electric power generated by 5.7 MWe natural gas fueled turbine generators. Consequently, fracturing operations are cleaner, quieter, safer, and less disruptive to neighboring communities.

Clean Fleet® transformer trailer with VFD housing

Clean Fleet™ switchgear with Patton and Cooke 13.8 kV connections that are color coded, keyed, and locked

U.S. Patent No. 8,789,601. U.S Well Services

The World’s First Fully Electric,Fully Mobile Well Stimulation System,Fueled by Natural Gas

Clean Fleet® is a proprietary, patented system developed by U.S. Well Services that incorporates existing industry equipment con�gured to provide fracturing services with enhanced safety features, smaller physical and environmental footprints, and reduced noise levels.

Reinvent the Frac Fleet, not the wheel

• Clean Fleet® uses electricity generated onsite by turbine generators fueled by natural gas and has demonstrated reduced fuel operating costs by as much as 90%

• Clean Fleet® mitigates environmental exposure by reducing NOx and CO emissions by 99%.

• Clean Fleet® eliminates ALL diesel truck deliveries to the well site for an average horizontal well completion, reducing tra�c within communities while also mitigating associated �re hazards.

• Clean Fleet® Whisper™ Technology signi�cantly reduces noise pollution emanating from the well site making the workplace safer and communities undisturbed.

• Clean Fleet® incorporates advanced technology that reduces equipment and discharge iron vibrations by 80%, resulting in fewer failures and safer operations.

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EmissionsClean Fleet® successfully reduces hazardous emissions to near-zero levels. As con�rmed by independent 3rd party testing, Clean Fleet® decreases emissions by 99 percent compared to conventional diesel powered �eets, all but eliminating environmental exposure to pollutants such as nitrogen oxides (NOx) and carbon monoxide. Speci�cally, NOx emissions measured on the turbine exhaust stacks were found to be 0.036 grams per kilowatt hour (g/kW-hr) which is a drastic reduction compared to the Environmental Protection Agency’s (EPA) requirements for o�-highway diesel engines.

This reduction is achieved by eliminating all conventional diesel engines and replacing them with electric motors powered by natural gas generators. Clean Fleet® technology also eliminates methane slip issues observed in conventional powered dual fuel (diesel/natural gas) reciprocating engine applications.

Clean Fleet® Whisper Technology is the industry’s foremost solution for quiet, low noise impact hydraulic fracturing. Whisper™ well stimulation technology signi�cantly reduces noise pollution, making the workplace safer and less disturbing to surrounding communities.

VibrationsClean Fleet® technology leads the way in advancing safety via reduced vibrations and fatigue of treating iron. Our electric �eet reduces high pressure iron vibrations by up to 80% as compared to diesel powered equipment.

This dramatic reduction in vibrations is achieved by replacing the engine and transmission with a VFD that controls the electric motor which is direct coupled to the hydraulic fracturing pump.

Conventional

CLEAN FLEET®

Comparison of Clean Fleet® NOx emissions to other engine types measured by independent tests

More than 140 total monitoring locations were recorded andthe result was up to a 69% reduction in the average sound pressure at the Clean Fleet® stimulation site.

Comparison of Clean Fleet® treating iron vibrations to conventional �eets

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Clean Fleet® Whisper™ Technology Compared toConventional Sound Pressure for Entire Site

Technology & InnovationU.S. Well Services takes pride in developing new technologies and providing solutions to challenging problems. As government regulations become increasingly strict in the oil and gas industry, the development of new technologies prove immensely important.

The safety of our employees, customers and the environment is our number one priority. We are committed to reducing the hazardous risk associated with the inhalation of respirable silica dust on hydraulic fracturing sites.

USWS has developed SANDSHIELD™ to mitigate silica emission below OSHA PEL standards.

USWS is leading the way in predictive maintenance and has developed FRAC MD™ Machine Diagnostics, Minimizing Downtime to mitigate fatigue and premature failures of our equipment. When we listen to what the machines are telling us, we’ll greatly increase reliability, safety, and predictability which all reduces downtime and increases safe stages per day.

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OPERATIONAL EFFICIENCY BEFORE AND AFTER FRAC MD™ IMPLEMENTATION

26 Days after FRAC MD™ Implementation

Average NPT/Day = 0:19Average NPT/Day = 3:42

Health, Safety and Environment

• State-of-the-art air �ltration units, keeping silica dust below permissible exposure limits (PEL) • “A” rated member of ISNetworld • Trailer-mounted �re suppression equipment and dousing showers provided 24/7 on all locations. • Industry-leading Short Service Employee (“SSE”) training and mentoring program • Third party medical case management services • Dedicated operations training team for each �eet • Comprehensive subcontractor management program Cost Savings

• Rigorous preventative maintenance program minimizes non-productive time (NPT)

Sand & Logistics

• Long term allotment of high quality API spec sand contracted • Close range terminals with access to lease and pool rail cars • USWS utilizes a combination of sand logistics providers, including Company owned and independent truckers in addition to SandBox® Logistics Chemicals & New Technology

• Secure chemical supply from industry-leading suppliers • Utilizes “green” / low toxicity fracturing additives, including guar alternatives

Conventional FleetDiesel Engine Powered

With some of the newest �eets in the country, we provide industry-leading well stimulation services for our clients by o�ering safe, cost-e�ective, state-of-the-art hydraulic fracturing equipment and experienced personnel.

U.S. Well Services provides industry-leading well stimulation services to our clients by excelling in the following key areas:

Equipment

• State-of-the-art uniform hydraulic fracturing �eets designed and manufactured by industry leaders, Stewart & Stevenson and NRG Manufacturing. • Triplex and Quintuplex stimulation pumps rated to 14,500 psi • Blenders rated to 130 bpm • USWS �eets are among the newest on the market rated over 10,000 psi

Operating Areas

U.S. Well Services currently operates high pressure, high rate, hydraulic fracturing �eets in the Marcellus and Utica Shale plays of Ohio, Pennsylvania, and West Virginia as well as in the Cotton Valley, Austin Chalk, and Eagle Ford Shale plays of Texas. We are also evaluating opportunities with existing and new customers to expand our operations throughout the United States.

Bryan, TX2870 N. Harvey Mitchell Parkway

Suite 300, Bryan, TX 77803

Jane Lew, WV533 Industrial Park Drive

Jane Lew, WV 26378304-884-5097

Uhrichsville, OH159 N. Wardell Street

Uhrichsville, OH 44683740-673-30217

Williamsport, PA30 Dome Drive,

Muncy, PA

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For more information770 South Post Oak Lane, Suite 410 Houston, TX 77056

832-562-3730 | sales@uswellservices.com

© 2017 US Well Services, LLC USWELLSERVICES.COM