NEW ORLEANS (AP) — Engineers began pumping heavy drilling mud into the blown-out Gulf of Mexico oil well Tuesday in what they think is their best chance yet to reach the ultimate goal in a delicate process — snuffing one of the world's largest spills for good.
Crews began the long-awaited effort dubbed the "static kill" around 3 p.m. Central time, BP spokesman John Barnes told The Associated Press. The effort involves pumping mud and eventually, crews hope, cement down a pipe to seal off the source of the oil.
Tests for the effort started a couple hours earlier as crews probed the broken well bore with an oil-like liquid to determine whether there were any obstructions in the well and to assess the pressure of the bore and the pump rates it could withstand.
Crews should know within hours whether the mud is pushing down the oil as envisioned. But engineers still won't know for more than a week whether the attempt achieved its goal because they have to wait for completion of an 18,000-foot relief well to reach the reservoir from the bottom.
"This is a really positive step forward," retired Coast Guard Adm. Thad Allen said earlier, calling it "good news in a time where that hasn't been very much good news, but it shouldn't be a cause for premature celebration."
Company officials earlier said the static kill alone — which involves slowly pumping the mud down lines running from ships a mile above — might be enough to plug the oil leak.
But the only surefire way to make certain the well is permanently plugged is to fill it from below with mud and cement, via the relief well, in a so-called "bottom kill," Allen said. The relief well is set for completion as early as Aug. 11.
The static kill could take days to complete, mostly because it involves slow pumping of mud, said Allen, the government's point man on the spill response.
The effort is meant as insurance for the crews that have spent months fighting the spill. The only thing that had been keeping the oil from blowing into the Gulf was an experimental cap that has held for more than two weeks but was never meant to be permanent.
Allen added earlier Tuesday that there "should be no ambiguity" that the primary relief well will be finished, regardless.
It's important to begin soon, he said, with the peak hurricane season just around the corner. Tropical Storm Colin formed far out in the Atlantic on Tuesday, but early forecasts put it on a track off the East Coast rather than the Gulf.
And while diagnostic tests show that the 75-ton cap that has bottled up the oil since mid-July is sound, the static kill should give scientists more confidence the well won't leak again, he said.
"The quicker we get this done, the quicker we can reduce the risk of some type of internal failure" of the massive cap, he said.
A federal task force said Monday that about 172 million gallons of oil made it into the Gulf between April and July 15, when the temporary cap contained all the oil.
The task force said about 206 million gallons actually gushed out of the well, but a fleet of boats and other efforts were able to contain more than 33 million. The 172 million gallons is on the high end of recent estimates that anywhere from 92 million to 184 million gallons had gushed into the sea.
Judging by the latest estimate, BP could be fined up to $5.4 billion under the Clean Water Act, or as much as $21 billion if it is found to have committed gross negligence or willful misconduct.
The high-end fine would drop to around $17.6 billion if the government credits BP for the oil it has recovered, while the low-end fine would be around $4.5 billion.
Any fines would be on top of the compensation BP has agreed to pay to thousands of people harmed by the spill. Under pressure from the White House, the company set up a $20 billion escrow fund to pay all claims, including environmental damages and state and local response costs.
The company began drilling a primary relief well May 2, 12 days after the Deepwater Horizon rig exploded and killed 11 workers, and a second backup well May 16. The first well is now only about 100 feet from the target.
BP and federal officials have managed to contain large parts of the spill through skimmers, boom and chemical dispersants meant to break up the oil.
Federal regulators have come under fire from critics who say that BP was allowed to use excessive amounts of the dispersants, but government officials counter that they have helped dramatically cut the use of the chemicals since late May.
The Environmental Protection Agency released a study Monday concluding that when mixed with oil, chemical dispersants used to break up the crude in the Gulf are no more toxic to aquatic life than oil alone.
As businesses along the coast continued to clamor for relief from losses caused by the spill, BP said it created a special team to reduce paperwork and speed up payments to "businesspeople who are suffering."
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Contributing to this report were Associated Press writers Ramit Plushnick-Masti in Houston, Jeffrey Collins and Harry R. Weber in New Orleans, and Matthew Daly in Washington.
Copyright 2010 The Associated Press.
THIS IS A BREAKING NEWS UPDATE. Read earlier story below.
NEW ORLEANS (AP) — Crews hoped to begin pumping mud and perhaps cement down the throat of the blown-out oil well at the bottom of the Gulf of Mexico on Tuesday in what BP officials said could be the method of attack that finally snuffs the spill.
Engineers planned to probe the busted blowout preventer with an oil-like liquid to determine whether it could handle the static kill. If the test is successful, they plan to spend Tuesday through Thursday pumping the heavy mud down the well.
The so-called "static kill" is meant as insurance for the crews who have spent months fighting the oil spill. The only thing keeping oil from blowing into the Gulf at the moment is an experimental cap that has held for more than two weeks but was never meant to be permanent.
BP officials had insisted for months that a pair of costly relief wells were the only surefire way to kill the oil leak but said Monday that the static kill alone — involving lines running from a ship to the blown-out well a mile below — might do the trick.
BP Senior Vice President Kent Wells said that if the static kill is successful, the relief wells may not be needed to do the same thing weeks later, but from the bottom. The primary relief well, near completion, will still be finished and could be used simply to ensure the leak is plugged, he said.
"Even if we were to pump the cement from the top, we will still continue on with the relief well and confirm that the well is dead," he said. Either way, "we want to end up with cement in the bottom of the hole."
Government officials and company executives have long said the wells, which can cost about $100 million each, might be the only way to make certain the oil is contained to its vast undersea reservoir. A federal task force said about 172 million gallons of oil made it into the Gulf between April and mid-July, when a temporary cap bottled up all the oil.
The task force said actually about 206 million gallons total gushed out of the mile-deep well but a fleet of boats and other efforts were able to contain more than 33 million gallons. The 172 million gallons is on the high end of recent estimates that anywhere from 92 million to 184 million gallons had gushed into the sea.
Judging by the latest estimate, BP could be fined up to $5.4 billion under the Clean Water Act, or as much as $21 billion if it is found to have committed gross negligence or willful misconduct.
The high-end fine would drop to around $17.6 billion if the government credits BP for the oil it has recovered, while the low-end fine would be around $4.5 billion.
Any fines would be on top of the compensation BP has agreed to pay to thousands of people harmed by the spill. Under pressure from the White House, the company set up a $20 billion escrow fund to pay all claims, including environmental damages and state and local response costs.
The company began drilling the primary, 18,000-foot relief well May 2, 12 days after the Deepwater Horizon rig exploded and killed 11 workers, and a second backup well May 16. The first well is now only about 100 feet from the target, and Wells said it could reach it as early as Aug. 11.
Retired Adm. Thad Allen, the government's point man on the spill response, said Monday that the focus now is on making sure the static kill is successful. But he cautioned that federal officials don't see it as "the end all, be all until we get the relief well done."
Before the effort can begin, engineers must probe the broken blowout preventer with an oil-like liquid to decide whether it can handle the static kill process. They had hoped to begin the hours-long test Monday but delayed it until Tuesday after a small leak was discovered in the hydraulic control system.
"Everyone would like to have this thing over as soon as possible," Allen said, adding: "We don't know the condition of the well until we start pushing mud into it."
The company's statements Monday might signal that it is more concerned than it has acknowledged about debris found in the relief well after it was briefly capped as Tropical Storm Bonnie passed last week, said Ed Overton, a Louisiana State University environmental sciences professor.
Tropical Storm Colin formed far out in the Atlantic on Tuesday, but early forecasts put it on a track off the East Coast rather than the Gulf.
BP and federal officials have managed to contain large parts of the spill through skimmers, oil-absorbant boom and chemical dispersants meant to break up the oil.
Federal regulators have come under fire from critics who say that BP was allowed to use excessive amounts of the dispersants, but government officials counter that they have helped dramatically cut the use of the chemicals since late May.
The Environmental Protection Agency released a study Monday concluding that when mixed with oil, chemical dispersants used to break up the crude in the Gulf are no more toxic to aquatic life than oil alone.
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Associated Press writers Jeffrey Collins and Harry R. Weber in New Orleans and Matthew Daly in Washington contributed to this report.
Copyright 2010 The Associated Press.
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