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| Methane Gas Bubble Triggered Deadly Oil Rig Explosion | |
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| Tweet Topic Started: May 8 2010, 08:42 AM (1,094 Views) | |
| Ruth | May 8 2010, 08:42 AM Post #1 |
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Methane Gas Bubble Triggered Deadly Oil Rig Explosion ON THE GULF OF MEXICO -- The deadly blowout of an oil rig in the Gulf of Mexico was triggered by a bubble of methane gas that escaped from the well and shot up the drill column, expanding quickly as it burst through several seals and barriers before exploding, according to interviews with rig workers conducted during BP's internal investigation. While the cause of the explosion is still under investigation, the sequence of events described in the interviews provides the most detailed account of the April 20 blast that killed 11 workers and touched off the underwater gusher that has poured more than 3 million gallons of crude into the Gulf. Portions of the interviews, two written and one taped, were described in detail to an Associated Press reporter by Robert Bea, a University of California Berkeley engineering professor who serves on a National Academy of Engineering panel on oil pipeline safety and worked for BP PLC as a risk assessment consultant during the 1990s. He received them from industry friends seeking his expert opinion. Seven BP executives were on board the Deepwater Horizon rig celebrating the project's safety record, according to the transcripts. Meanwhile, far below, the rig was being converted from an exploration well to a production well. Workers set and then tested a cement seal at the bottom of the well. Then they reduced the pressure in the drill column and attempted to set a second seal below the sea floor. A chemical reaction caused by the setting cement created heat and a gas bubble which destroyed the seal. Deep beneath the seafloor, methane is in a slushy, crystalline form. Deep sea oil drillers often encounter pockets of methane crystals as they dig into the earth. As the bubble rose up the drill column from the high-pressure environs of the deep to the less pressurized shallows, it intensified and grew, breaking through various safety barriers, the interviews said. "A small bubble becomes a really big bubble," Bea said. "So the expanding bubble becomes like a cannon shooting the gas into your face." Up on the rig, the first thing workers noticed was the sea water in the drill column suddenly shooting back at them, rocketing 240 feet in the air. Then, gas surfaced. Then oil. "What we had learned when I worked as a drill rig laborer was swoosh, boom, run," Bea said. "The swoosh is the gas, boom is the explosion and run is what you better be doing." The gas flooded into an adjoining room with exposed ignition sources, he said. "That's where the first explosion happened," said Bea, who worked for Shell Oil in the 1960s during the last big northern Gulf of Mexico oil well blowout. "The mud room was next to the quarters where the party was. Then there was a series of explosions that subsequently ignited the oil that was coming from below." According to one interview transcript, a gas cloud covered the rig, causing giant engines on the drill floor to run too fast and explode. The engines blew off the rig and set "everything on fire," the account said. Another explosion below blew more equipment overboard. BP spokesman John Curry would not comment Friday night on whether methane gas or the series of events described in the internal documents caused the accident. "Clearly, what happened on the Deepwater Horizon was a tragic accident," said Curry, who is based at an oil spill command center in Robert, Louisiana. "We anticipate all the facts will come out in a full investigation." The BP executives were injured but survived, according to one account. Nine rig crew on the rig floor and two engineers died. "The furniture and walls trapped some and broke some bones but they managed to get in the life boats with assistance from others," said the transcript. The reports made Bea, the 73-year-old industry veteran, cry. "It sure as hell is painful," he said. "Tears of frustration and anger." On Friday, a BP-chartered vessel lowered a 100-ton concrete-and-steel vault onto the ruptured well, an important step in a delicate and unprecedented attempt to stop most of the gushing crude fouling the sea. "We are essentially taking a four-story building and lowering it 5,000 feet and setting it on the head of a pin," BP spokesman Bill Salvin told The Associated Press. Underwater robots guided the 40-foot-tall box into place in a slow-moving drama. Now that the contraption is on the seafloor, workers will need at least 12 hours to let it settle and make sure it's stable before the robots can hook up a pipe and hose that will funnel the oil up to a tanker. "It appears to be going exactly as we hoped," Salvin said on Friday afternoon, shortly after the four-story device hit the seafloor. "Still lots of challenges ahead, but this is very good progress." By Sunday, the box the size of a house could be capturing up to 85 percent of the oil. The task became increasingly urgent as toxic oil crept deeper into the bays and marshes of the Mississippi Delta. A sheen of oil began arriving on land last week, and crews have been laying booms, spraying chemical dispersants and setting fire to the slick to try to keep it from coming ashore. But now the thicker, stickier goo -- arrayed in vivid, brick-colored ribbons -- is drawing ever closer to Louisiana's coastal communities. There are still untold risks and unknowns with the containment box: The approach has never been tried at such depths, where the water pressure is enough to crush a submarine, and any wrong move could damage the leaking pipe and make the problem worse. The seafloor is pitch black and the water murky, though lights on the robots illuminate the area where they are working. If the box works, another one will be dropped onto a second, smaller leak at the bottom of the Gulf. At the same time, crews are drilling sideways into the well in hopes of plugging it up with mud and concrete, and they are working on other ways to cap it. Investigators looking into the cause of the explosion have been focusing on the so-called blowout preventer. Federal regulators told The Associated Press Friday that they are going to examine whether these last-resort cutoff valves on offshore oil wells are reliable. Blowouts are infrequent, because well holes are blocked by piping and pumped-in materials like synthetic mud, cement and even sea water. The pipes are plugged with cement, so fluid and gas can't typically push up inside the pipes. Instead, a typical blowout surges up a channel around the piping. The narrow space between the well walls and the piping is usually filled with cement, so there is no pathway for a blowout. But if the cement or broken piping leaves enough space, a surge can rise to the surface. There, at the wellhead of exploratory wells, sits the massive steel contraption known as a blowout preventer. It can snuff a blowout by squeezing rubber seals tightly around the pipes with up to 1 million pounds of force. If the seals fail, the blowout preventer deploys a last line of defense: a set of rams that can slice right through the pipes and cap the blowout. Deepwater Horizon was also equipped with an automated backup system called a Deadman. It should have activated the blowout preventer even if workers could not. Based on the interviews with rig workers, none of those safeguards worked. http://www.foxnews.com/us/2010/05/07/robots-working-position-giant-box-oil-spewing-gulf-mexico-work-ahead/ |
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| Earendel | May 8 2010, 05:37 PM Post #2 |
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Looks like containment has failed on the first try. |
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| Wil | May 9 2010, 09:11 AM Post #3 |
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Madsen is highly credible from what I've heard. The Cover-up: BP's Crude Politics and the Looming Environmental Mega-Disaster Written by Wayne Madsen WMR has been informed by sources in the US Army Corps of Engineers, Federal Emergency Management Agency (FEMA), and Florida Department of Environmental Protection that the Obama White House and British Petroleum (BP), which pumped $71,000 into Barack Obama's 2008 presidential campaign -- more than John McCain or Hillary Clinton, are covering up the magnitude of the volcanic-level oil disaster in the Gulf of Mexico and working together to limit BP's liability for damage caused by what can be called a "mega-disaster." Obama and his senior White House staff, as well as Interior Secretary Ken Salazar, are working with BP's chief executive officer Tony Hayward on legislation that would raise the cap on liability for damage claims from those affected by the oil disaster from $75 million to $10 billion. However, WMR's federal and Gulf state sources are reporting the disaster has the real potential cost of at least $1 trillion. Critics of the deal being worked out between Obama and Hayward point out that $10 billion is a mere drop in the bucket for a trillion dollar disaster but also note that BP, if its assets were nationalized, could fetch almost a trillion dollars for compensation purposes. There is talk in some government circles, including FEMA, of the need to nationalize BP in order to compensate those who will ultimately be affected by the worst oil disaster in the history of the world. Plans by BP to sink a 4-story containment dome over the oil gushing from a gaping chasm one kilometer below the surface of the Gulf, where the oil rig Deepwater Horizon exploded and killed 11 workers on April 20, and reports that one of the leaks has been contained is pure public relations disinformation designed to avoid panic and demands for greater action by the Obama administration, according to FEMA and Corps of Engineers sources. Sources within these agencies say the White House has been resisting releasing any "damaging information" about the oil disaster. They add that if the ocean oil geyser is not stopped within 90 days, there will be irreversible damage to the marine eco-systems of the Gulf of Mexico, north Atlantic Ocean, and beyond. At best, some Corps of Engineers experts say it could take two years to cement the chasm on the floor of the Gulf. Only after the magnitude of the disaster became evident did Obama order Homeland Security Secretary Janet Napolitano to declare the oil disaster a "national security issue." Although the Coast Guard and FEMA are part of her department, Napolitano's actual reasoning for invoking national security was to block media coverage of the immensity of the disaster that is unfolding for the Gulf of Mexico and Atlantic Ocean and their coastlines. From the Corps of Engineers, FEMA, the Environmental Protection Agency, Coast Guard, and Gulf state environmental protection agencies, the message is the same: "we've never dealt with anything like this before." The Obama administration also conspired with BP to fudge the extent of the oil leak, according to our federal and state sources. After the oil rig exploded and sank, the government stated that 42,000 gallons per day was gushing from the seabed chasm. Five days later, the federal government upped the leakage to 210,000 gallons a day. However, WMR has been informed that submersibles that are monitoring the escaping oil from the Gulf seabed are viewing television pictures of what is a "volcanic-like" eruption of oil. Moreover, when the Army Corps of Engineers first attempted to obtain NASA imagery of the Gulf oil slick -- which is larger than that being reported by the media -- it was turned down. However, National Geographic managed to obtain the satellite imagery shots of the extent of the disaster and posted them on their web site. There is other satellite imagery being withheld by the Obama administration that shows what lies under the gaping chasm spewing oil at an ever-alarming rate is a cavern estimated to be around the size of Mount Everest. This information has been given an almost national security-level classification to keep it from the public, according to our sources. The Corps and Engineers and FEMA are quietly critical of the lack of support for quick action after the oil disaster by the Obama White House and the US Coast Guard. Only recently, has the Coast Guard understood the magnitude of the disaster, dispatching nearly 70 vessels to the affected area. WMR has also learned that inspections of off-shore rigs' shut-off valves by the Minerals Management Service during the Bush administration were merely rubber-stamp operations, resulting from criminal collusion between Halliburton and the Interior Department's service, and that the potential for similar disasters exists with the other 30,000 off-shore rigs that use the same shut-off valves. The impact of the disaster became known to the Corps of Engineers and FEMA even before the White House began to take the magnitude of the impending catastrophe seriously. The first casualty of the disaster is the seafood industy, with not just fishermen, oystermen, crabbers, and shrimpers losing their jobs, but all those involved in the restaurant industry, from truckers to waitresses, facing lay-offs. The invasion of crude oil into estuaries like the oyster-rich Apalachicola Bay in Florida spell disaster for the seafood industry. However, the biggest threat is to Florida's Everglades, which federal and state experts fear will be turned into a "dead zone" if the oil continues to gush forth from the Gulf chasm. There are also expectations that the oil slick will be caught up in the Gulf stream off the eastern seaboard of the United States, fouling beaches and estuaries like the Chesapeake Bay, and ultimately target the rich fishing grounds of the Grand Banks off Newfoundland. WMR has also learned that 36 urban areas on the Gulf of Mexico are expecting to be confronted with a major disaster from the oil volcano in the next few days. Although protective water surface boons are being laid to protect such sensitive areas as Alabama's Dauphin Island, the mouth of the Mississippi River, and Florida's Apalachicola Bay, Florida, there is only 16 miles of boons available for the protection of 2,276 miles of tidal shoreline in the state of Florida. Emergency preparations in dealing with the expanding oil menace are now being made for cities and towns from Corpus Christi, Texas, to Houston, New Orleans, Gulfport, Mobile, Pensacola, Tampa-St.Petersburg-Clearwater, Sarasota-Bradenton, Naples, and Key West. Some 36 FEMA-funded contracts between cities, towns, and counties and emergency workers are due to be invoked within days, if not hours, according to WMR's FEMA sources. There are plans to evacuate people with respiratory problems, especially those among the retired senior population along the west coast of Florida, before officials begin burning surface oil as it begins to near the coastline. There is another major threat looming for inland towns and cities. With hurricane season in effect, there is a potential for ocean oil to be picked up by hurricane-driven rains and dropped into fresh water lakes and rivers, far from the ocean, thus adding to the pollution of water supplies and eco-systems. This story contributed by the Wayne Madsen Report for Oilprice.com http://oilprice.com/Environment/Oil-Spills Madsen is highly credible from what I've heard. The Cover-up: BP's Crude Politics and the Looming Environmental Mega-Disaster Written by Wayne Madsen WMR has been informed by sources in the US Army Corps of Engineers, Federal Emergency Management Agency (FEMA), and Florida Department of Environmental Protection that the Obama White House and British Petroleum (BP), which pumped $71,000 into Barack Obama's 2008 presidential campaign -- more than John McCain or Hillary Clinton, are covering up the magnitude of the volcanic-level oil disaster in the Gulf of Mexico and working together to limit BP's liability for damage caused by what can be called a "mega-disaster." Obama and his senior White House staff, as well as Interior Secretary Ken Salazar, are working with BP's chief executive officer Tony Hayward on legislation that would raise the cap on liability for damage claims from those affected by the oil disaster from $75 million to $10 billion. However, WMR's federal and Gulf state sources are reporting the disaster has the real potential cost of at least $1 trillion. Critics of the deal being worked out between Obama and Hayward point out that $10 billion is a mere drop in the bucket for a trillion dollar disaster but also note that BP, if its assets were nationalized, could fetch almost a trillion dollars for compensation purposes. There is talk in some government circles, including FEMA, of the need to nationalize BP in order to compensate those who will ultimately be affected by the worst oil disaster in the history of the world. Plans by BP to sink a 4-story containment dome over the oil gushing from a gaping chasm one kilometer below the surface of the Gulf, where the oil rig Deepwater Horizon exploded and killed 11 workers on April 20, and reports that one of the leaks has been contained is pure public relations disinformation designed to avoid panic and demands for greater action by the Obama administration, according to FEMA and Corps of Engineers sources. Sources within these agencies say the White House has been resisting releasing any "damaging information" about the oil disaster. They add that if the ocean oil geyser is not stopped within 90 days, there will be irreversible damage to the marine eco-systems of the Gulf of Mexico, north Atlantic Ocean, and beyond. At best, some Corps of Engineers experts say it could take two years to cement the chasm on the floor of the Gulf. Only after the magnitude of the disaster became evident did Obama order Homeland Security Secretary Janet Napolitano to declare the oil disaster a "national security issue." Although the Coast Guard and FEMA are part of her department, Napolitano's actual reasoning for invoking national security was to block media coverage of the immensity of the disaster that is unfolding for the Gulf of Mexico and Atlantic Ocean and their coastlines. From the Corps of Engineers, FEMA, the Environmental Protection Agency, Coast Guard, and Gulf state environmental protection agencies, the message is the same: "we've never dealt with anything like this before." The Obama administration also conspired with BP to fudge the extent of the oil leak, according to our federal and state sources. After the oil rig exploded and sank, the government stated that 42,000 gallons per day was gushing from the seabed chasm. Five days later, the federal government upped the leakage to 210,000 gallons a day. However, WMR has been informed that submersibles that are monitoring the escaping oil from the Gulf seabed are viewing television pictures of what is a "volcanic-like" eruption of oil. Moreover, when the Army Corps of Engineers first attempted to obtain NASA imagery of the Gulf oil slick -- which is larger than that being reported by the media -- it was turned down. However, National Geographic managed to obtain the satellite imagery shots of the extent of the disaster and posted them on their web site. There is other satellite imagery being withheld by the Obama administration that shows what lies under the gaping chasm spewing oil at an ever-alarming rate is a cavern estimated to be around the size of Mount Everest. This information has been given an almost national security-level classification to keep it from the public, according to our sources. The Corps and Engineers and FEMA are quietly critical of the lack of support for quick action after the oil disaster by the Obama White House and the US Coast Guard. Only recently, has the Coast Guard understood the magnitude of the disaster, dispatching nearly 70 vessels to the affected area. WMR has also learned that inspections of off-shore rigs' shut-off valves by the Minerals Management Service during the Bush administration were merely rubber-stamp operations, resulting from criminal collusion between Halliburton and the Interior Department's service, and that the potential for similar disasters exists with the other 30,000 off-shore rigs that use the same shut-off valves. The impact of the disaster became known to the Corps of Engineers and FEMA even before the White House began to take the magnitude of the impending catastrophe seriously. The first casualty of the disaster is the seafood industy, with not just fishermen, oystermen, crabbers, and shrimpers losing their jobs, but all those involved in the restaurant industry, from truckers to waitresses, facing lay-offs. The invasion of crude oil into estuaries like the oyster-rich Apalachicola Bay in Florida spell disaster for the seafood industry. However, the biggest threat is to Florida's Everglades, which federal and state experts fear will be turned into a "dead zone" if the oil continues to gush forth from the Gulf chasm. There are also expectations that the oil slick will be caught up in the Gulf stream off the eastern seaboard of the United States, fouling beaches and estuaries like the Chesapeake Bay, and ultimately target the rich fishing grounds of the Grand Banks off Newfoundland. WMR has also learned that 36 urban areas on the Gulf of Mexico are expecting to be confronted with a major disaster from the oil volcano in the next few days. Although protective water surface boons are being laid to protect such sensitive areas as Alabama's Dauphin Island, the mouth of the Mississippi River, and Florida's Apalachicola Bay, Florida, there is only 16 miles of boons available for the protection of 2,276 miles of tidal shoreline in the state of Florida. Emergency preparations in dealing with the expanding oil menace are now being made for cities and towns from Corpus Christi, Texas, to Houston, New Orleans, Gulfport, Mobile, Pensacola, Tampa-St.Petersburg-Clearwater, Sarasota-Bradenton, Naples, and Key West. Some 36 FEMA-funded contracts between cities, towns, and counties and emergency workers are due to be invoked within days, if not hours, according to WMR's FEMA sources. There are plans to evacuate people with respiratory problems, especially those among the retired senior population along the west coast of Florida, before officials begin burning surface oil as it begins to near the coastline. There is another major threat looming for inland towns and cities. With hurricane season in effect, there is a potential for ocean oil to be picked up by hurricane-driven rains and dropped into fresh water lakes and rivers, far from the ocean, thus adding to the pollution of water supplies and eco-systems. This story contributed by the Wayne Madsen Report for Oilprice.com http://oilprice.com/Environment/Oil-Spills Edited by Wil, May 9 2010, 09:14 AM.
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2:19 AM Jul 11