Ключевые слова: art, background, barrel, black, building, business, contour, crude, derrick, diesel, drill, drilling, energy, environment, equipment, exploration, extraction, factory, fuel, gas, gasoline, icon, illustration, industrial, industry, isolated, line, linear, lineart, oil, outline, petroleum, pipe, pipeline, plant, platform, pollution, power, production, pump, refinery, resource, rig, silhouette, tank, technology, tower, well, white,