Ключевые слова: barrel, business, cash, chemical, crisis, crude, crude oil, currency, diagram, diesel, diesel fuel, dollar, drill, drilling, ecology, energy, environment, expensive, extraction, finance, financial, fossil, fuel, gallon, gas, gasoline, global, gold, growth, industrial, industry, investment, money, natural, oil, oil industry, oilfield, petrol, petroleum, pollution, power, production, profit, pump, resource, rig, stock, tank, trade, wealth,