An oil pump jack is seen in a field just outside of Riverdale Thursday, July 30, 2015. Scattered throughout the agricultural fields and western foothills of Fresno County are thousands of oil and gas wells producing millions of barrels of crude oil and billions of cubic feet of gas each year.
An oil pump jack is seen in a field just outside of Riverdale Thursday, July 30, 2015. Scattered throughout the agricultural fields and western foothills of Fresno County are thousands of oil and gas wells producing millions of barrels of crude oil and billions of cubic feet of gas each year. CRAIG KOHLRUSS ckohlruss@fresnobee.com
An oil pump jack is seen in a field just outside of Riverdale Thursday, July 30, 2015. Scattered throughout the agricultural fields and western foothills of Fresno County are thousands of oil and gas wells producing millions of barrels of crude oil and billions of cubic feet of gas each year. CRAIG KOHLRUSS ckohlruss@fresnobee.com

Fresno County crude oil production modest, but rising

July 31, 2015 09:00 AM