The price of oil plunged Friday to its lowest level in nearly six months. Here's how energy contracts traded.

On the New York Mercantile Exchange:

Benchmark crude fell $4.05 to finish at $98.49 per barrel.

Gasoline fell 7.42 cents to end at $2.9758 a gallon.

Heating oil fell 7.81 cents to finish at $3.0088 a gallon.

Natural gas fell 6.1 cents to end at $2.2790 per 1,000 cubic feet.

On the ICE Futures exchange in London:

Brent crude fell $2.90 to finish the day at $113.18 per barrel.