Ключевые слова: abstract, art, background, beam, commission, community, crude, design, drilling, economy, emblem, energy, eu, euro, europe, european, flag, flat, fuel, gas, graphic, horsehead, icon, illustration, insignia, international, jack, long, long shadow, nodding, oil, petroleum, politic, pump, pumpjack, rod, shadow, shape, sign, star, symbol, union, united, well,