It was the eighth consecutive week of an inventory buildup, putting total supplies at 381.6 million barrels.
In New York, West Texas Intermediate crude oil for June delivery shed $1.11 cents to $92.87 per barrel, the lowest price since December. Natural gas for June delivery rose 0.2 cents to hit $2.62 per million British thermal units.
Home heating oil was down 0.75 cents to $2.8901 per gallon.
Gasoline lost 0.85 cents to reach $2.9124 per gallon.
At the pump, the national average price of unleaded gasoline rose Tuesday to Wednesday from $3.727 per gallon to $3.728, AAA said.