Oct. 31 (Bloomberg) -- Oil futures rose after the U.S. government reported an unexpected decline in inventories.

Crude oil for December delivery rose $2.77, or 3.1 percent, to $93.15 a barrel at 10:31 a.m. on the New York Mercantile Exchange. Futures traded at $91.30 a barrel before release of the report at 10:30 a.m. in Washington.

To contact the reporter on this story: Bill Banker in New York at bbanker@bloomberg.net.

Last Updated: October 31, 2007 10:33 EDT