Ключевые слова: background, blue, business, construction, crude oil, derrick, development, drilling, energy, engineering, environment, equipment, exploration, extraction, field, fuel, gas, gasoline, geology, industrial, land, landscape, machine, metal, mining, nature, oil, oilfield, onshore, orange, outdoors, petrochemical, petroleum, pipe, pipeline, platform, power, production, pump, resource, rig, shale, silhouette, sky, steel, sunrise, sunset, technology, tower, well,