Ключевые слова: background, barrel, building, business, cartoon, chemical, chemistry, chimney, construction, crude, design, drilling, energy, environment, equipment, extraction, factory, fuel, gas, gasoline, graphic, icon, illustration, industrial, industry, isolated, offshore, oil, petrochemical, petrol, petroleum, pipe, pipeline, plant, platform, power, production, pump, refinery, refining, rig, station, steel, structure, tank, technology, tower, transportation,