Ключевые слова: abstract, black background, blank, chalk illustration, clipart, contemporary, cool, derrick, designer element, drawing, drill, drilling, elementary symbol, flat, fuel, gas, graphic, icon, industry, isolated, jack, logo, mobile, modern content, oil, oil energy, petrol, petroleum, pipe, plain object, production, pump, rig, rounded, school blackboard, set, sign, silhouette, simple design, simplified concept, simplistic style, tower, trend, trendy, ui, web pictogram, website, well, white button,