Gerald F. Clark

Output Exploration LLC provides oil and gas exploration and production services using advanced geophysical technologies and innovative techniques. Its operations are on three regions the Sacramento Basin in California, the Anadarko Basin in Oklahoma, and the Gulf Coast Basin of Texas and Louisiana. The company was founded in 1992 and is located in Stafford, TX.

GFI Oil & Gas Corp. provides oil and gas exploration services. It has operations in Thailand, Indonesia, and the United States. The company operates as a subsidiary of Salamander Energy Plc. GFI Oil & Gas was founded in 2004 and is headquartered in Houston, TX.

Greenfields Petroleum Corp. operates as an oil and natural gas exploration and development company. It focuses on the development and production of proven oil and gas reserves in the Republic of Azerbaijan. The company was founded by Richard E. MacDougal and Alex T. Warmath on November 28, 2007 and is headquartered in Houston, TX.

Ciris Energy, Inc. develops and produces energy from abundant, low-value carbon sources. Its services include the science, the process and intellectual property. It's commercializes proprietary biotechnology for the conversion of fossil sources of carbon, such as low rank coal, to natural gas and other valuable chemicals on a large scale. The firm has locations in Australia, Brisbane, Colorado and Wyoming. The company was founded by Robert A. Downey in 2007 and is headquartered in Centennial, CO.