oil well pumpjack in operation pumping crude

background blackgold cell change climate commodities commodity crude driller drillers drilling energize energy field fuel fueling future gas generate history industry jack line markets natural oiling oily okie oklahoma old operate operating operation pickens pipe pipeline piston power pumped pumping pumpjack pumpjacks pwerful regenerate renewable rural saudi solar station sustainable texas transport viable watchers wind energy crude texan samson shaft pitmans beams pumpjack jack cranks petrol petroleum OPEC