Ключевые слова: background, barrel, black, blue, business, cistern, cloud, construction, container, derrick, drill, drilling, energy, environment, equipment, exploration, extraction, field, formation, fossil, fracking, fracturing, fuel, gas, geology, horizontal, hydraulic, industrial, industry, jack, metal, natural, oil, petrol, petroleum, pipeline, pollution, power, production, pump, reservoir, resource, rig, shale, sky, steel, tank, technology, toilet, well,