Ключевые слова: background, black, business, clouds, construction, derrick, drill, drilling, eagle, ecology, economy, energy, environment, equipment, exploration, extraction, field, fracking, fuel, gas, gasoline, industrial, industry, land, machine, machinery, money, natural, oil, oilfield, onshore, petrochemical, petroleum, platform, pollution, power, production, resource, rig, shale, silhouette, site, sky, sunset, technology, tool, tower, unit, well, wellhead,