Nick Wallis

CITGO Petroleum Corp. engages in refining, transporting, and marketing of transportation fuels, lubricants, and petrochemicals products. It offers retail gasoline, diesel fuel, jet fuel, lubricants, petrochemicals, and other petroleum-based industrial products. The company was founded by Henry L. Doherty in 1910 and is headquartered in Houston, TX.

Total E&P Joslyn Ltd. develops, operates, produces and sells recoverable bitumen found in Athabasca oil sands. Its assets include Lease 24 and Permit 70, collectively known as the Joslyn Lease. The company was founded in 1998 and is headquartered in Calgary, Canada.

Lime Rock Management LP (Lime Rock Management) is Private Equity firm founded in 1998 by Jonathan Clark Farber and John T. Reynolds. The firm is headquartered in Westport with additional office in London.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

Arena Exploration LLC produces oil and gas minerals. It explores oil through geophysical, geological, and engineering evaluations. The company was founded on June 6, 2005 and is headquartered in The Woodlands, TX.

CrownRock LP engages in the production and exploration of oil and gas properties. The company was founded in 2007 and is headquartered in Midland, TX.

Iracore International LLC manufactures urethane lined pipes and pipeline systems. It produces pipe system for oil sand slurry transport and tailings disposal, pipes to protect against abrasion and corrosion in the most challenging conditions. The company was founded by Daniel O. Burkes in 1957 and is headquartered in Hibbing, MN.

AccessESP LLC provides rigless electric submersible pump conveyance solutions for the global oil industry. It offers a permanent magnet motor and a side pocket mandrel wet connect system, into a patented solution consisting of a tubing-mounted permanent completion and a slickline retrievable assembly. The company was founded by Geoff Kimber-Smith and Phil Head in 2004 and is headquartered in Houston, TX.

Part of VES Survey International, Vaughn Energy Services LLC provides oil and gas field directional surveying services. The company is based in Robstown, TX. The company was founded by Gary Vaughn, Nick Wallis.

Endurance Resources Holdings LLC owns and operates oil and gas properties. It offers oil and gas drilling operations. The company was founded by Don Ritter and Garrett Smith and is headquartered in Addison, TX.

CrownRock Minerals LP acquires mineral and royalty interests for mineral properties in Permian Basin. The company is headquartered in Midland, TX.

Silvertip Completion Services Operating LLC operates as an oilfield service company. It offers cased-hole wireline solutions including perforating, pumpdown, and logging. The company is headquartered in Dallas, TX.

Primerock Resources LLC operates as oil exploration and production company. The firm acquires and develops undeveloped assets in core areas of Southeastern New Mexico and Texas. The company was founded by Manny Sirgo in April 2017 and is headquartered in Midland, TX.

Arena Gulf Holdings LP functions as an investment holding company. The company is currently headquartered in Houston, TX.