Ключевые слова: background, barrel, black, blue, business, crude, derrick, diesel, drill, drilling, ecology, economy, energy, equipment, evening, exploration, extraction, facility, field, fossil, fuel, gas, gasoline, graphic, industrial, industry, jack, machine, natural, oil, oilfield, orange, petroleum, pipe, pipeline, platform, power, pump, pumpjack, refinery, rig, rocking, silhouette, sky, sun, sunrise, sunset, technology, unit, well,