Ключевые слова: background, black, building, business, design, drilling, drop, energy, equipment, exploration, factory, fire, flame, flat, fossil, fuel, gas, gasoline, geological, geology, icon, illustration, industrial, industry, isolated, jack, liquid, oil, oilman, petrol, petroleum, pipe, pipeline, pollution, power, pressure, pump, research, rig, set, silhouette, symbol, tank, technology, transparent, white,