John McElroy

SCF Partners LLC (SCF Partners) is a private equity subsidiary of SCF Partners, Inc. founded in 1989 by L.E. Simmons. The firm is headquartered in Houston, Texas.

Oil Patch Group, Inc. engages in the rental of drill pipe and living quarters, as well as other rental equipment and services, including the management of the initial flowback period during well production. Its services include downhole, rental, water and sewer, and production. The company was founded by Jim D. Elzner and is headquartered in Houston, TX.

Baker Hughes Holdings LLC supplies oilfield services, products, technology, and systems to the worldwide oil and natural gas industry. It provides products and services for other businesses including downstream chemicals, and process and pipeline services. The company is headquartered in Houston, TX.

Forum was founded when eleven companies came together to do a better job for the drilling and production industries. They design, manufacture and supply hardworking tools to serve and support these hardworking people including major onshore and offshore drilling contractors, orilling equipment rental companies, oilfield service companies, and assemblers of drilling and well servicing equipment. Flow control products include expendable fluid end-components for mud and centrifugal pumps, valves, chokes, kill manifolds and pressure control equipment. In addition, the company offers tubular handling products, including hydraulic catwalks, rotary and drill collar slips, safety clamps, casing slips and scrapers, elevators, stabbing guides, mouse hole tools, iron roughnecks, and tongs; and well invented products, including high pressure blowout preventers, lubricators, wellhead adapter flanges, and accessories.

Complete Energy Services, Inc. provides oil and gas support services. Its services include fluid handling, well service rigs and rental tools. The company is headquartered in Houston, TX.

California Institute of Technology provides education focusing on science, engineering, academia, business, and public service. The company was founded in 1891 and it is headquartered in Pasadena, CA.

Shelf Subsea Pty Ltd. provides engineering, manned diving and marine construction services for oil and gas industry. It offers dive support vessels, geotechnical, hire equipment, offshore air, nitrox system, ROV, saturation and zone rated system services. The company was founded in 2002 and is headquartered in Perth, Australia.

Centurion Group Holdings Ltd. provides investment services. The private company is based in Aberdeen, UK and was founded in 2012.

The Houston Museum of Natural Science operates a national museum. It consists of a planetarium, environmentally-controlled butterfly center, off-site observatory, advanced IMAX theatre and temporary and permanent exhibit halls. The museum features displays on subjects such as space science, energy, paleontology, chemistry, gems and minerals, ancient Egyptians, Native Americans and Texas wildlife. The company was founded in 1909 and is headquartered in Houston, TX.

Proserv (1) Ltd. is a holding company, which engages in investment purposes. The company was founded on February 11, 2010 and is headquartered in Aberdeen, the United Kingdom.

Conserve Oilfield Services Ltd. provides offshore containers, cargo carrying units and offshore chemical tanks for rent and associated equipment and services for participants in the offshore oil and gas industry. It also provides management services including maintenance and re-certification for clients with their own offshore container or tank fleets and asset tracking of their equipment. The company was founded in 1998 and is headquartered in Aberdeen, the United Kingdom.

Kinetic Consolidated Pty Ltd. engages in the provision of oil and gas drilling services. It offers a comprehensive and integrated range of services from supporting well completion and hydraulic stimulation, to production, intervention, plug and abandonment. Its services include Vause, Grizzly and Surtron services. The company was founded on November 18, 2011 and is headquartered in West Perth, Australia.

Select Energy Services LLC operates as an oil and gas service company. The firm offers water solutions and environmental, well completions & intervention and facilities construction & engineering services. The company was founded in 2008 and is headquartered in Houston, TX.

Oil Patch Group, Inc. rents drill pipes and related drilling tools and accessories for the oil and gas industry.

Baylor St. Luke's Medical Center is an 881-bed academic medical center located in the Texas Medical Center. The hospital also has three community emergency centers offering adult and pediatric care for the greater Houston area. St. Luke's Health provides renowned, high-quality healthcare services throughout the greater Houston area. The private company is based in Houston, TX. It is a joint venture between Baylor College of Medicine and St. Luke's Health. Baylor St. Luke's was the first facility in Texas and the Southwest to be designated a Magnet® hospital for nursing excellence by the American Nurses Credentialing Center, receiving the award five consecutive times. The hospital is home to the Texas Heart® Institute, a cardiovascular research and education institution founded in 1962 by Denton A. Cooley.

Pumpco Energy Services, Inc. provides stimulation and cementing services used in the development and completion of oil and gas wells. Its services include fracturing, acidizing, and surface casing. It serves the customers of North Texas. The company is headquartered in Gainesville, TX.

Part of Occidental Petroleum Corp., Union Pacific Resources, Inc. is a company that is involved in railroads, gas, and oil production. The company is based in Bethlehem, PA.

Rockwater Energy Solutions, Inc. provides water management and chemical technologies solutions. It offers fluids conditioning, water transfer, flow back and well testing, fluid logistics, above-ground storage, construction services, completion and production of chemicals, coiled tubing chemicals, and chemical logistics. The company was founded on June 1, 2011 and is headquartered in Houston, TX.

Beckman Production Services LLC provides oil and gas production maintenance and support services. The company was founded was founded on January 21, 2003 and is headquartered in Kalkaska, MI.

The Center Serving Persons With Mental Retardation is a not for profit agency serving persons with intellectual and developmental disabilities through programs and care services. It offers day, residential, vocational, and enrichment services. The company was founded in 1950 and is headquartered in Houston, TX.

Desert Arc is a non-profit company that aims to enhance the quality of life and create opportunities for people with disabilities. The company is based in Palm Desert, CA. The company has a long history of helping people with disabilities and offer Development Programs to achieve this goal. The company also provides Shredding services.

Nine Energy Canada, Inc. provides production enhancement services for North American oil and gas explorers. Its services include installation of artificial lift equipment, acquisition and submission of all regulatory board required pressure data. The firm offers casing inspection, noise temperature logging, surestroke tools and stim sleeve propellant services. The company was founded in 1999 and is headquartered in Calgary, Canada.

The Texas Medical Center provides healthcare services. The company was founded in 1900 and is headquartered in Huston, TX.

The Centurion Group, Inc. operates as a facility maintenance contractor. It offers custodial, painting, grounds maintenance, snow and ice removal, military housing and facility maintenance services. The company as founded was founded on February 28, 2000 and is headquartered in Colorado Springs, CO.

Part of BCCK Holdings, Inc., BCCK Engineering, Inc. is a leading technology solutions provider and full-service EPC firm serving gas processing and renewable energy markets. The company is based in Midland, TX. The company offers innovative technological solutions for concept, engineering, design, fabrication, manufacturing, and construction. Partnering with BCCK as a single-source provider allows for project efficiencies, environmental benefits, and cost savings.

Frontier Tubular Solutions LLC provides OCTG services, storage and transportation services for energy sector. Its services include inspection and testing, threading, and pipe maintenance and reclamation. The company is headquartered in Houston, TX.

Professional Directional Enterprises, Inc. provides directional and horizontal drilling services. It offers rotary equipment and mud motors, well planning and coordinating, field and customer support and consulting services. The company was founded by Charles L. May and Jerry W. Callens in 2001 and is headquartered in Conroe, TX.

Greater Houston Partnership operates as a place for community-minded business leaders who want to be involved in Houston''s positive growth and influence the direction. The company was founded in 1840 and is headquartered in Houston, TX.