An internal BP file released by a U.S. congressman showed BP estimated 100,000 barrels of oil may be spilling into the Gulf of Mexico daily, according to news reports on Monday.

Ships and drilling rigs surround the Discoverer Enterprise as it continues to recover oil from the Deepwater Horizon drill site in the Gulf of Mexico on June 15, 2010.?

Prior to the release of the document, BP stated that there were 5,000 barrels of oil spilling daily and estimated the figure may come up to 60,000, according to AFP.

Congressman Ed Markey released two pages of the undated file, showing BP estimated 100,000 barrels were spilling daily.

"If BOP and wellhead are removed and if we have incorrectly modeled the restrictions -- the rate could be as high as 100,000 barrels per day up the casing," the released file said.