Ruben Alba

Glen Rose Petroleum Corp. explores and produces oil and natural gas. It focuses on the development of on-shore U.S. oil and gas assets. The company was founded in 1981 and is headquartered in Houston, TX.

Gale Force Petroleum, Inc. engages in the exploration, operation and development of oil and gas resources. It focuses on acquiring and exploiting underdeveloped oil and gas reserves in mature basins, bringing operational expertise and capital to lower risk, development type projects. The company was founded on May 29, 2001 and is headquartered in Toronto, Canada.

Gravis Oil Corp. explores and mines oil and gas. It is engaged in the acquisition, exploration and development of a number of unproven heavy oil properties in the United States. Its activities to date have included analysis and evaluation of technical data, preparation of geological models, acquisition of mineral rights, exploration and development drilling, conceptual engineering, construction and operation of thermal demonstration projects, and securing capital to fund related expenditures. The company was founded on February 8, 2000 and is headquartered in Houston, TX.

Part of Petro River Oil Corp., Petro River Oil LLC is a private company that produces oil and gas. The company is based in Dallas, TX. The CEOs are Daniel Smith, Ruben Alba. The company was founded by Scot J. Cohen. Petro River Oil was acquired by Gravis Oil Corp. on April 23, 2013.