U.S. WELL SERVICES HOLDINGS, LLC, commonly known as U.S. Well Services or USWS, is an oilfield service provider headquartered in Houston, Texas. Founded in 2012, the company was formerly publicly traded on NASDAQ before being acquired by ProFrac Holding Corp. (NASDAQ: PFHC) in November 2022, becoming its subsidiary. Prior to its acquisition, U.S. Well Services reported revenues in the hundreds of millions of dollars annually, and employee counts have varied, with reports ranging from over 200 to around 800 employees at different times.
The company specializes in providing well stimulation services to the upstream oil and natural gas industry, primarily focusing on high-pressure hydraulic fracturing in unconventional basins across the United States. U.S. Well Services is particularly known for its multi-patented "Clean Fleet®" technology, which includes fully electric, mobile well stimulation systems powered by natural gas-fueled turbine generators, alongside its conventional diesel fleets. Their offerings also encompass patented technologies like PowerPath for centralized power generation, FRAC MD for failure prediction, and SANDSHIELD for emission reduction.
In terms of patent litigation, U.S. WELL SERVICES HOLDINGS, LLC has appeared as a plaintiff in its single tracked case and has no recorded appearances as a defendant. This posture indicates an operating company actively asserting its intellectual property. The case, PROFRAC SERVICES, LLC et al. v. LIBERTY ENERGY SERVICES LLC et al., was filed in the United States District Court for the Eastern District of Texas, Marshall Division, a venue frequently chosen by plaintiffs in patent disputes.
A notable context for the company's litigation is its acquisition by ProFrac Holding Corp. in late 2022. As part of this acquisition, ProFrac gained U.S. Well Services' "industry leading intellectual property portfolio," which includes over 110 patents related to electric frac technology. This move was intended to establish ProFrac as a leader in electric hydraulic fracturing. Despite being acquired by ProFrac, U.S. WELL SERVICES HOLDINGS, LLC is listed as the plaintiff in a case that names PROFRAC SERVICES, LLC, among others, as defendants.