John B. Marvin

Venoco LLC engages in the acquisition, exploration, and development of oil & natural gas properties. Its principal producing assets are heavily oil-weighted and are located both onshore and offshore in Southern California. The company was founded by Timothy M. Marquez in September 1992 and is headquartered in Denver, CO.

Western Gas Resources, Inc. used to explore natural gas and natural gas liquids. It engaged in the exploration, development, production, gathering, processing, treatment, transportation and marketing of natural gas and natural gas liquids. It operated through four segments: Gas Gathering, Processing and Treating, Exploration and Production, Marketing and Transportation. Western Gas Resources, Inc. was founded in 1989 and was headquartered in Denver, CO.

Flatirons Resources LLC operates as an oil and gas exploration company. It offers consulting services in a variety of functional areas such as strategy, marketing, sales, financials, people, systems and offers services to companies located around the world. The company was founded in February 2007 and is headquartered in Westminster, CO.