I'm not trying to be a protectionist in any way but it surprised me to find out where my gas money goes to:
 
Foreign owned refiners/producers:
ARCO, Amoco owned by British Petroleum(BP), London, England, UK
Equilon, Citgo, Shell owned by Royal Dutch Shell, The Hague, Netherlands

American owned refiners/producers:
Phillips 66, CircleK owned by ConocoPhillips, Houston, TX, USA
Exxon, Mobil, Esso, Standard owned by Exxon/Mobil, Irving, TX, USA
Sunoco owned by SunCompany, Philadelphia, PA, USA
Sinclair owned by Sinclair Oil & Refining Corporation, Salt Lake City, UT, USA
Union 76, Texaco, Chevron owned by Chevron, San Ramon, CA USA
Valero, Diamond Shamrock owned by Valero Corp,  San Antonio, TX, USA
Marathon owned by Marathon Oil, Big Spring, TX, USA
Flying J owned by J Flying Refiners, Palm Bay, FL USA
Hess owned by Hess Corp, New York, NY USA
Getty owned by Lukoil Corp, East Meadow, NY USA
Tesoro owned by Tesoro Corp, San Antonio, TX USA

Gasoline resellers: (Unknown as to where they buy their gasoline?)
Family Express owned by Family ExpressCorp, Valparaiso, IN USA
QT owned by QuiktripCorp, Tulsa, OK, USA
Love's owned by Love's Travel Stops and Country Stores, Amarillo TX, USA
Gasamerica owned by Gasamerica, Greenfield, IN USA
Pilot Travel Center owned by Pilot Travel Centers LLC, Knoxville, TN USA
Mac's Convenience owned by Alimentation Couche-Tard, Laval, QC, Canada
Racetrac owned by Racetrac Petroleum Inc, Atlanta, GA USA
Costco owned by Costco Corp, Issaquah, WA, USA
BJ's owned by  BJ's Wholesale Club, Inc., Natick, MA

This doesn't include Shale Oil where world-wide technically-recoverable reserves have recently been estimated at about 2.8-3.3 trillion barrels of shale oil, with the largest reserves in the USA, which is thought to have 1.5-2.6 trillion barrels.