Washington Post | One of the country's biggest oil fields just turned to an unexpected ... Washington Post The Belridge oil field near Bakersfield, Calif., is one of the largest in the country. It has been producing oil for more than a century and last year produced about 76,000 barrels a day, according to Aera Energy, its operator. But the oil field is ... GlassPoint to build California's largest solar energy project on oil field |