Thomas Voytovich

Sheridan Investment Partners I LLC invests in oil and gas exploration companies. The company is headquartered in Houston, TX.

Sheridan Production Co. LLC operates as an oil and gas production company. The company was founded in 2006 and is headquartered in Houston, TX.

Berexco, Inc. is an independent oil and gas exploration and production company operating in 8 mid-continent states, with the majority of its production located in Kansas and Oklahoma. The American company is a member of the Independent Oil and Gas Association and is the lead industry participant in the U.S. Department of Energy South-Central Kansas CO2 project. Berexco has 11 active workover rigs supporting its operations, and its personnel serve on various industry committees and boards. The private company's health plan transparency is provided by Blue Cross Blue Shield.

Shell Oil Co. manufactures petrochemicals and distributes gas and oil products. The company was founded in 1912 and is headquartered in Houston, TX.

Apache Corp. operates as an energy company, which engages in the exploration, development, and production of natural gas, crude oil, and natural gas liquids. The company was founded by Truman Anderson, Raymond Plank, and Charles Arnao on December 6, 1954 and is headquartered in Houston, TX.