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Hand with biofuel refueling nozzle on a background of sunflower field with wind turbines.
Large pump jack pumping crude oil up to the surface.
The crank balanced beam pumping unit in the JiDong oilfield, on December 1, 2013, caofeidian, hebei province, China.
Oil pump. Digital extraction, Gas market, Well drilling, Petroleum production, Fossil fuel, Oilfield crisis, Energy economy, War constriction, Oil refinery, Crude trading, Black gold concepts
Operating oil well, Bakersfield, California

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