black metal oil barrels fall from a waterfall at sunset day. oil price falling or declining prices or crisis or decrease of

closeup collapse commodity construction currency declining demand depletion diesel drill economy energy export extractor finance financial fossil fuel gas gasoline global glut illustration industrial industry inexpensive market metal metaphor nymex oilfield over overproduction oversupplied oversupply petrochemical petrochemistry petrol policy pollution production reserve resource saudi suicide supply surreal tumbling world