October 11, 2019
Integrity Energy Services, LLC continues its expansion into the nitrogen services market
Integrity Energy Services, LLC continues its expansion into the nitrogen services market

Fund II Exited Investments

Buckhorn Energy Services, LLC provides oilfield waste treatment and disposal services to the oil and natural gas industry.  In addition to salt water disposal wells located throughout the Bakken shale region, Buckhorn is developing a solid waste treatment operation in North Dakota.  Buckhorn was established in 2011 and is headquartered in Denver, Colorado. For more information, please visit
Rotary Drilling Tools USA, LLC manufactures, services and repairs downhole drilling tools and other OCTG products. All manufacturing is conducted at the company’s headquarters in Beasley,TX while additional service and repair facilities are located in Rifle, Colo.; Evanston, Wyo.; Mexico and Colombia. The management team has more than 150 collective years of experience in the manufacturing of oilfield tubular products. For more information, please visit
Vision Oil Tools, LLC provides fishing services and equipment rental to the oil and gas industry.  Gary Roberts, formerly with Weatherford and Complete, joined Vision in early 2010 as CEO and has led the company through a period of rapid growth focused primarily on the Bakken shale region.  Bakken oil wells are on the leading edge in terms of complexity of well design - including lateral length and number of frac stages - which results in increased downhole service intensity.  Vision was founded in 2000 and is headquartered in Rock Springs, Wyoming with field offices in Gillette, Wyoming and Williston, North Dakota.  Mr. Roberts will remain CEO and co-owner. For more information, please visit


OFS Energy Fund
6363 Woodway Drive, Suite 900

Houston TX 77057
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Main Number: (713) 580-2727