Thomas D. Sheffield

Corporate Officer/Principal at American Association of Petroleum Geologists

Energy Minerals

Commercial Services

Consumer Services

Thomas D. Sheffield active positions

Companies	Position	Start	End
American Association of Petroleum Geologists	Corporate Officer/Principal	-	-

Companies	Position	Start	End
PIONEER NATURAL RESOURCES COMPANY	Corporate Officer/Principal	31/12/1987	30/06/2019
Colorado Oil & Gas Association Colorado Oil & Gas Association Oil & Gas ProductionEnergy Minerals Colorado Oil & Gas Association engages in the exploration and production of oil and gas. The private company is based in Denver, CO. The company was founded by Anthony W. Sharp. Dan Haley has been the CEO of the company since 2015.	Director/Board Member	-	-
	Chairman	-	-
Western Energy Alliance Western Energy Alliance Miscellaneous Commercial ServicesCommercial Services Western Energy Alliance is a nonprofit trade association based in Denver, CO, representing 300 companies engaged in environmentally responsible exploration and production of oil and natural gas in the west. The company believes in the principle of multiple use of non-park, non-wilderness public lands and has consistently stressed the importance of public lands advocacy over many years. The company is an advocacy organization promoting the best practices in the industry.	Director/Board Member	-	-
	Chairman	-	-

The University of Texas of the Permian Basin

Graduate Degree

International

United States

Operational

Corporate Officer/Principal	2
Director/Board Member	2
Chairman	2

Sectoral

Positions held

Active

Inactive

Listed companies

Private companies

Private companies	4
Pioneer Natural Resources Co. Pioneer Natural Resources Co. Oil & Gas ProductionEnergy Minerals Pioneer Natural Resources Co. operates as an independent oil and gas exploration and production company. The firm engages in hydrocarbon exploration in the Cline Shale. It focuses on the operation of the Permian Basin, Eagle Ford Shale, Rockies, and West Panhandle projects. The company was founded by Scott Douglas Sheffield on April 2, 1997, and is headquartered in Irving, TX.	Energy Minerals
Western Energy Alliance Western Energy Alliance Miscellaneous Commercial ServicesCommercial Services Western Energy Alliance is a nonprofit trade association based in Denver, CO, representing 300 companies engaged in environmentally responsible exploration and production of oil and natural gas in the west. The company believes in the principle of multiple use of non-park, non-wilderness public lands and has consistently stressed the importance of public lands advocacy over many years. The company is an advocacy organization promoting the best practices in the industry.	Commercial Services
Colorado Oil & Gas Association Colorado Oil & Gas Association Oil & Gas ProductionEnergy Minerals Colorado Oil & Gas Association engages in the exploration and production of oil and gas. The private company is based in Denver, CO. The company was founded by Anthony W. Sharp. Dan Haley has been the CEO of the company since 2015.	Energy Minerals
American Association of Petroleum Geologists