Keith O. Rattie

ENSCO International, Inc. engages in the provision of contract drilling and marine transport services. The company was founded in 1987 and is headquartered in Houston, TX.

QEP Resources, Inc. engages in the exploration and production of oil and natural gas properties. It focuses in the Northern Region primarily in North Dakota, Wyoming and Utah, and the Southern Region primarily in Texas and Louisiana geographical regions. The company was founded in 1922 and is headquartered in Denver, CO.

Valaris Plc engages in the provision of offshore contract drilling services to the international oil and gas industry. It operates its through the following segments: Floaters, Jackups and ARO, Others. The Floaters segment includes drill ships and semisubmersible rigs. The Jackups segment offers contract drilling service. The ARO segment focuses in offshore drilling services. The Others segment consists of management services on rigs owned by third-parties. The company was founded on July 3, 1905 and is headquartered in London, the United Kingdom.

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.

EP Energy Corp. engages in the acquisition and development of unconventional onshore oil and natural gas properties. It focuses on the development of drilling inventory located in the following areas: the Eagle Ford Shale in South Texas, Northeastern Utah in the Uinta basin, and the Permian basin in West Texas. The company was founded on August 30, 2013 and is headquartered in Houston, TX.

ZB, NA (do-business-as Zions Bank) is the investment management subsidiary of Zions Bancorporation NA (NASDAQ: ZION), a bank holding company. The firm is headquartered in Salt Lake City, Utah. They were founded in 1957 through the merger of Zion's Savings Bank & Trust Co., Utah Savings & Trust Co. and First National Bank of Salt Lake City. Zions Bank offers customized wealth management strategies to clients such as individuals, families, businesses, nonprofits, and government entities.

The National Petroleum Council operates as a council for national petroleum. The private company is based in Washington.

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.