Ключевые слова: background, blue, clouds, crude, drill, drilling, early, ecology, energy, environment, equipment, extracting, extraction, field, frozen, fuel, gas, gasoline, industrial, industry, jack, landscape, machine, machinery, nature, oil, oilfield, petroleum, pipes, platform, power, pump, raw, refinery, rocking, sky, snow, spring, station, sunny, tank, technology, white, winter,