BURAS, La - BP Plc estimates that a worst-case scenario rate for the Gulf of Mexico oil spill could be about 100,000 barrels of oil per day, according to an internal company document released on Sunday by a senior US congressional Democrat.

Its estimate of up to 100,000 barrels (4.2 million gallons/15.9 million liters) of oil per day is far higher than the current US government estimate of up to 60,000 barrels (2.5 million gallons/9.5 million liters) gushing daily from the ruptured offshore well into the sea.

"Since there are no plans to remove the blowout preventer, the number is irrelevant," he said.

The British energy giant, still struggling to stop a leak that began on April 20 and is causing an economic and environmental disaster along the US Gulf Coast, is planning to raise $50 billion to cover the cost of the largest oil spill in US history, London's Sunday Times reported.

The oil spill is now in its 62nd day and has dealt a blow to fishing and tourism industries across four Gulf states, soiling coastlines that are a playground for tourists and vital habitat for wildlife.

The amount of oil spurting from the well has been a matter of considerable controversy in the past two months, with critics saying BP consistently understated the flow rate.

The internal BP document, which is undated, was released by US Representative Ed Markey, chairman of a subcommittee of the House Energy and Commerce Committee.

The document appears to estimate the highest potential flow of oil if key components of the well fail. It does not indicate that the 100,000 barrels per day is BP's estimate of the actual amount gushing from the ruptured Gulf of Mexico well.

"Right from the beginning, BP was either lying or grossly incompetent," Markey told NBC's "Meet the Press."

"First they said it was only 1,000 barrels, then they said it was 5,000 barrels."

But BP's Odone said, "I don't think there's been any underestimating. We've always said we would deal with whatever volume of oil was being spilled and that's exactly what we're doing."

The document was posted on the Internet at http://globalwarming.house.gov/files/WEB/flowrateBP.pdf

RAISING MONEY

London's Sunday Times, without citing any sources, said BP planned to raise $10 billion from a bond sale, $20 billion from banks and $20 billion from asset sales over the next two years to cover the cost of the spill.

BP said last week it would suspend dividend payments to its shareholders and increase the pace of asset sales to $10 billion this year to offset liabilities from the spill, which began after an explosion on an offshore rig that killed 11 workers.

The Financial Times reported BP is considering doubling the $10 billion asset sale program as part of a push to strengthen the company's liquidity as it comes under financial pressure.

BP said 21,040 barrels of oil (883,680 gallons/3.34 million liters)) leaking from the well was collected by its siphoning systems on Saturday. A large amount of oil continues to leak into the sea from the ruptured well a mile (1.6 km) below the ocean surface despite the BP containment systems.

Kenneth Feinberg, the independent administrator appointed to run the $20 billion fund set up by BP to compensate victims for financial losses due to the oil spill, said he would make sure that "every eligible, legitimate claim is paid and paid quickly."

Appearing on NBC's "Meet the Press," Feinberg rejected the complaint of a senior Republican congressman, Joe Barton, who said last week that the fund set up by BP under pressure from President Barack Obama amounted to a government "shakedown."

"I don't think it helps to politicize this program," said Feinberg, an arbitration lawyer who dispensed hundreds of millions of dollars to victims of the Sept. 11, 2001 attacks.

"This a voluntary program. No one is compelled to come into this fund."