David H. Kennedy

First Reserve Management LP (First Reserve) is a private equity firm founded in 1983. The firm is headquartered in Stamford, Connecticut.

Maverick Tube Corp. manufactures steel tubular products for gas and oil drilling operations. It offer line pipe for oil and gas surface handling and transportation. The firm sell both structural tubing and standard pipe for transportation, agricultural and construction applications. The company was founded by Don Beattie in 1978 and is located in Chesterfield, MO.

Carbon Energy Corp. explores and produces oil and natural gas. It offers contract drilling and well operation services. It provides all related products such as crude oil, natural gas, and petrol. The company was founded in 1999 and is headquartered in Denver, CO

National Energy Resources Acquisition Co. was a blank check company formed for the purpose of targeting businesses in the energy and natural resources industry for an initial business combination. National Energy Resources Acquisition was founded in November 2007 and was headquartered in Denver, CO.

Nytis Exploration Co. provides gas exploration and production services. The company was founded in 2003 and is headquartered in Denver, CO.

Logan International, Inc. engages in manufacturing of oil field tools and equipment. The firm also provides seismic surveying services. It offers proprietary tools that enhance the effectiveness of horizontal drilling. The company was founded on April 7, 1993 and is headquartered in Calgary, Canada.