Ключевые слова: 3d, art, atmosphere, background, barrel, building, business, carbon, cloud, co2, color, colorful, concept, contour, design, dioxide, drilling, ecology, emission, energy, environment, exhaust, factory, flat, fuel, gas, gasoline, gradient, icon, illustration, industrial, industry, isolated, isometric, leak, line, linear, lineart, oil, outline, petroleum, pipe, power, pump, rig, sign, silhouette, symbol, technology,