DNV Macondo BOP Final Report

DNV Macondo BOP report - Drill pipe at an awkward angle
DNV has released its final report into what went wrong with the Blow Out Preventer above the Macondo well - it was drill pipe not being cut properly, due to being at an awkward angle when the rams tried to cut it.


At the time of the accident, there was a drill pipe tool joint between the upper annular ram and the upper variable bore ram. When both of these rams were closed around the drill pipe, forces from the flow of fluids pushed the tool joint into the upper annular ram.

This meant that the when the blind shear ram was closed, it did not close the drillpipe smoothly, but pushed the pipe at an awkward angle, which meant it did not seal.

Note - it was not a problem of a tool joint being positioned between the blind shear rams at the time they were activated and the rams not being able to cut them (as many people thought it might be) - but the tool joint being in a position such that the rams could not cleanly cut the drill pipe.

An additional contributing factor was the fact that the upper annular ram, which closes around the drillpipe but does not squash the drillpipe, was closed at the time, because of the negative pressure tests which were carried out.

So the drillpipe did not have freedom to move - this also means that the rams were trying to close the drill pipe in a scenario which might have not been previously tested.

The liquids flowing through the well made it buckle between the upper annular and upper variable bore rams, which also led it to squash in an awkward way.

So as the blind shear rams closed, part of the drill pipe cross section ended up being trapped between the ram block faces, so the blocks did not fully close.

The evidence suggests that the blind shear rams were activated on the morning of April 22nd (the date the rig sank) - at this date the hydraulic plunger to the autoshear valve was cut, DNV says - although there is no way to be sure exactly when it closed, it could have been activated earlier by the deadman / automatic mode failure system.

When the drill pipe was sheared on April 29 with the casing shear rams, the flow just found a different route, going through open drill pipe at the casing shear rams, and up the wellbore to the blind shear rams.

DNV recommends that the industry makes further studies what effect flow through the drill pipe tubing and blow out preventer components can have on the ability for the BOP to close, with possible buckling of the drill pipe.

It also recommends that the industry should study the effects of tubulars being fixed or constrained in the blow out preventer as the rams close.

DNV recommends that the industry should also look at potential effects of certain activities (for example conducting negative pressure tests) can have on the ability for a BOP to operate in an emergency.

Deep-water drilling in the Gulf of Mexico could resume within weeks

Path Clears for Deep-Water Drilling

By BEN CASSELMAN And DANIEL GILBERT
Deep-water drilling in the Gulf of Mexico could resume within weeks under a policy announced Monday by the Obama administration, which has come under increasing criticism from the oil industry and politicians in the region over the impact of the drilling halt.

Oil and gas exploration in the Gulf's deep waters has been stopped since May, when President Barack Obama announced a six-month drilling moratorium in the wake of the April explosion of the Deepwater Horizon drilling rig, which killed 11 workers and set off the worst offshore oil spill in U.S. history.

The administration lifted the ban in October—a month ahead of schedule—but hasn't issued any permits for new deep water oil wells.

On Monday, The Wall Street Journal reported that the delay has hurt both the oil industry, which has seen billions of dollars in projects put on hold, and the Gulf Coast's economy, which has been hit hard by the slowdown.

The administration said Monday that it would clear the path for 13 companies, including Chevron Corp. and Royal Dutch Shell PLC, to resume work on a handful of wells that were already approved and under way when the moratorium took effect. The 16 projects must still comply with strict new safety rules announced after the Deepwater Horizon disaster, but in most cases won't be subjected to new environmental reviews.

The announcement means that some drilling could resume in a matter of weeks, although the exact timing remains unclear. But the policy doesn't affect the more than a dozen permit requests that were pending when the moratorium took effect or have been filed since. Those must still undergo enhanced environmental reviews.

GE Bets on Deep Water Oil With $1.3 Billion Wellstream Bid Access thousands of business sources not available on the free web. Learn More Michael Bromwich, director of the Bureau of Ocean Energy Management, Regulation and Enforcement, the newly formed federal agency in charge of offshore drilling, said projects that were interrupted by the moratorium deserved special consideration.

"For those companies that were in the midst of operations at the time of the deep-water suspensions, today's notification is a significant step toward resuming their permitted activity," Mr. Bromwich said in a statement.

Oil companies in recent weeks had become increasingly pessimistic about a quick resumption of drilling in 2011, with some predicting that the wait would last into the second half of the year. On Monday, the industry praised the decision but said more details were needed.

"It appears to be a step in the right direction," Randall Luthi, president of the National Ocean Industries Association, a trade group, said in an interview. However, he said, "there are still major questions and some confusion among the companies about what is being required."

Elgie Holstein, a staff expert for the Environmental Defense Fund, an environmental group, said he didn't see any reason for projects halted by the moratorium to be treated as special cases. But he said the new policy was reasonable as long as regulators enforced the new safety and environmental rules. "I actually thought it was a balanced response," Mr. Holstein said. "It does relieve some of the pressure that the Gulf Coast has been feeling from an economic standpoint."

The administration has come under increasing pressure from Republicans and some Gulf Coast Democrats to allow drilling to resume. On Monday, lawmakers reacted cautiously to the announcement. Sen. Mary Landrieu, a Louisiana Democrat who has been a vocal critic of the administration's drilling policy, said some projects could still be thwarted.

"We need to know more about the conditions under which drilling will be allowed to resume and make sure those conditions don't actually undermine the intent," Ms. Landrieu said in a statement.

Doc Hastings, the Washington Republican who is incoming chairman of the House Natural Resources Committee, was also skeptical.

"Today's announcement by BOEMRE only ensures the possibility that previous drilling activity can resume at some point in the future if certain requirements are met," Rep. Hastings said in a statement. "The Obama administration can prove it's serious about resuming drilling in the Gulf by actually issuing permits and allowing people to return to work."

—Siobhan Hughes and Tennille Tracy contributed to this article.

BP Doug Suttles Tours the Oil Spill Site

Doug Suttles, Chief Operating Officer, BP Exploration and Production, returns to the site of the oil spill to see the progress that has been made in the fight against the oil spill. "The things people have done here are mind-boggling." To learn more about BP's response in the Gulf of Mexico, visit http://bp.com/gulfofmexico

Static Kill Injectivity Testing Commences on MC252 Well

Release date: 03 August 2010
HOUSTON - BP started injectivity testing today at 19:05 (UK) and 13:05 (CDT) in advance of static kill operations. Based on the results of the injectivity test, pumping of drilling mud for the static kill could commence later today, following which a decision on the best way to cement the well will be determined. All operations are being carried out with the guidance and approval of the National Incident Commander. The aim of these procedures is to assist with the strategy to kill and isolate the well, and will complement the upcoming relief well operation.
The relief well remains the ultimate solution to kill and permanently cement the well. The first relief well, which started May 2, has set its final 9 7/8-inch casing. Operations on the relief wells are suspended during static kill operations. Depending upon weather conditions, mid-August is the current estimate of the most likely date by which the first relief well will intercept the Macondo well annulus, and kill and cement operations commenced.

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BP announces oil leak has stopped

BP announces oil leak has stopped in Gulf of Mexico for first time in 3 months (see live video)
Cindy Adams - US Headlines Examiner


BP oil spill update: Testing on new cap begins, spill should be contained by July 19

BP announced Thursday that oil has stopped leaking into the Gulf of Mexico for the first time since its rig exploded on April 20.

Undersea robots worked through the night on a leak that was found after BP began testing its new well cap Wednesday afternoon. The test was conducted by turning off pipes that send some of the oil to surface vessels so the full force of the oil was centered on the cap. After two of the three valves on the cap had been closed, it was determined that one was still leaking.

BP PLC Vice President, Kent Wells, said the new leak was repaired by replacing the assembly, or choke line, on the suspect pipe.

ABC News reports that the cap remains a temporary fix and the leak will only be permanently quelled after two relief wells that are currently being drilled can reach the leak and permanently plug it with cement and heavy drilling mud. BP has stated this will likely occur mid-August.

To see live video of the well and the repairs being done, click here.

Now that the leaky pipe has been replaced, BP will have to begin retesting by letting additional oil leak out of the cap temporarily and once again turning off a pipe that is sending oil to a surface ship, in order to determine whether the new cap can withstand the full force of the erupting oil.
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'Top kill' method 'slows BP oil leak' in Gulf of Mexico

Oil has been gushing from the well for the past five weeks BP has slowed the flow of oil and gas from a ruptured well into the Gulf of Mexico, a US official told local media.

The company's "top kill" effort has "stabilised the wellhead", Coast Guard commander Admiral Thad Allen said.

But he cautioned it was too early to declare success. This is the first step in BP's plan to seal the well for good.

'Low pressure'
Footage from BP's underwater camera
Adm Allen told US media the "top kill" procedure, which began on Wednesday, has pumped enough drilling fluid to block some of the oil and gas escaping from the well.

Adm Allen told National Public Radio that BP engineers had "been able to force mud down and not allow any hydrocarbons to come up."

It was the first positive official assessment of BP's latest attempt to plug the well, after previous efforts failed.

BP shares were up more than 5% in London trading following the announcement.

BP has not yet commented in detail on the situation, saying merely that its "subsea efforts [were] advancing on several fronts".

Live Feed Ocean Floor from BP

Kevin Costner oil spill cleanup idea interests BP

By Mark Guarino

Film star Kevin Costner is joining the ranks of scientists, engineers, and lawmakers in an international effort to figure out how to contain and clean up oil streaming into the Gulf of Mexico at the rate of 210,000 gallons a day.
Mr. Costner appeared in New Orleans last week to demonstrate a $24 million oil extraction device he is pitching to BP and Coast Guard officials. Costner says the device will clean oil from the water at a rate of 97 percent. BP Chief Operating Officer Doug Suttles said Wednesday that his team will test the device next week.
Costner's involvement in helping solve oil spill crises is not new. The 1989 Exxon Valdez oil spill disaster in Alaska motivated the actor to help fund a consortium of scientists to develop technology that mitigates oil-infected water before it hits the coast. The technology is ready to combat the BP spill, he told reporters last week.
"It's not anymore about talk," Costner told WWL-TV in New Orleans. "It's about doing the walk, and that phrase was probably invented down here."
Costner's company, Ocean Therapy Solutions, provides multiple machines designed to address spills of different sizes. The largest can clean as many as 200 gallons per minute, Costner said. The company reports it has 20 such machines ready to be employed.
"The machines are basically sophisticated centrifuge devices that can handle a huge volume of water and separate [the oil] at unprecedented rates," Ocean Therapy Solutions CEO John Houghtaling said last week.


Costner said the machines work by drawing in the infested water where it then breaks it down, allowing the oil to discharge through a separate pipe. His audience, a gathering of local parish presidents, appeared eager to get the device to the Gulf.
"To me, this is a major tool for a tool box that should be tested," said Craig Taffaro, St. Bernard Parish president.
Besides saying that Costner's device will be tested next week, BP's Suttles said his company and the Coast Guard have been collecting ideas from the public since Day One of the crisis. The command center receives 100 ideas a day, Suttles said.
Costner said his decision to fund the technology was a result of needing to use the wealth he was "lucky" to accumulate instead of "piling it" for no real purpose.
"We all make decisions about what we want to be a part of. I'm just one person focusing on a specific problem and throwing a little resources to a lot of talent and manpower ... to come up with what is a [solution]," he said.

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BP says Gulf blow out preventer had been modified

WASHINGTON, May 11 (Reuters) - The blow-out preventer that was supposed to help protect against the oil spill disaster in the Gulf of Mexico had been modified, BP America Inc (BP.L: Quote, Profile, Research) President Lamar McKay told a senate panel on Tuesday.
"I have reason to believe the BOP had been modified," McKay told the Senate Committee on Energy and Natural Resource, which held its first hearing into the causes of the spill that killed 11 workers and caused a leak that is still releasing thousands of barrels of oil per day.

Steven Newman, the president and chief executive of Transocean Ltd (RIGN.S: Quote, Profile, Research) said the blowout preventer had been modified in 2005 at the request of BP.
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WASHINGTON – Rep. Henry Waxman says that his committee's investigation into the Gulf oil spill reveals that a key safety device, the blowout preventer, had a leak in a crucial hydraulic system.

The California Democrat said in a hearing Wednesday that the investigation also discovered that the well had failed a negative pressure test just hours before the April 20 explosion.

He cited BP documents received by the Energy and Commerce Committee that showed there was a breach in the well integrity that allowed methane gas and possibly other hydrocarbons to enter the well.

Gulf of Mexico Oil Spill Response

Keep Up with the latest progress on the response efforts in the gulf.

Deep Water Horizon Oil Spill Response

BP stops one of three Deepwater Horizon oil leaks

"We made good progress yesterday, including the cap on the drill pipe," BP spokesman John Curry wrote in an email, referring to shutting off one of the leaks.

Doug Suttles, BP chief operating officer, had said on Tuesday that although the undersea repair work on the riser pipe was expected to plug one of the three leaks, "I don't believe that will change the total amount leaking".

US authorities and BP are racing to try to contain a huge oil slick from the ruptured well that is threatening four Gulf coastal states.

BP stems one of three Deepwater Horizon oil leaks, US coastguard saysWork unlikely to reduce overall oil flow into the Gulf of Mexico, but will ease efforts to contain the slick

Boats with oil booms try to contain oil spilled from the explosion and collapse of the Deepwater Horizon rig in the Gulf of Mexico Photograph: Gerald Herbert/AP

The US coastguard says BP has managed to cap one of three leaks from its stricken deepwater oil well, but the work is not expected to reduce the overall flow of oil into the Gulf of Mexico.

The work should reduce the number of leak points that need to be fixed on the ocean floor, making it easier to drop a containment dome to bottle up the disastrous oil spill threatening sealife and livelihoods along the Gulf Coast.

Since an explosion on 20 April, 50 miles off the coast of Louisiana, the Deepwater Horizon well has been spewing at least 800,000 litres a day.

Experts say the best short-term solution is to drop a specially built giant concrete-and-steel box designed to siphon the oil away over the breach.

Crews for Wild Well Control, a contractor, are putting the finishing touches on the 100-ton containment dome, which is expected to be taken to the leak site today. John Curry, a BP spokesman, said it would be deployed on the seabed by tomorrow.

It's the latest attempt by BP engineers to stem the oil from the rig, which killed 11 workers when it exploded. It sank two days later, and oil started pouring into the Gulf. BP is in charge of the cleanup and President Barack Obamasays the company is responsible for the costs.

Officials said that capping one of the three leaks was a step towards stemming the flow. "It doesn't lessen the flow, it just simplifies the number of leak points they have to address," David Mosley, a coastguard petty officer 1st class, said.

A rainbow sheen of oil has reached land in parts of Louisiana, but the gooey rafts of coagulated crude have yet to come ashore in most places. Forecasts showed the oil wasn't expected to come ashore until at least tomorrow.

"It's a gift of a little bit of time, I'm not resting," said Mary Landry, a US coastguard rear admiral.

In their worst-case scenario, BP executives told members of a congressional committee that up to 9.5m litres a day could spill if the leaks worsened, though it would be more like 6.5m litres.

The worst oil spill in US history resulted from the 1989 grounding of the Exxon Valdez oil tanker in Alaska. It leaked nearly 11m gallons (41 million litres) of crude.

Containment domes have never been tried at this depth, about 5,000ft (1,500m) because of the extreme water pressure. The dome, if all goes well, could be fired up early next week to start funnelling the oil into a tanker.

It was not clear whether the equipment would work, said Bill Salvin, a BP spokesman. "What we do know is that we have done extensive engineering and modelling, and we believe this gives us the best chance to contain the oil, and that's very important to us."

Yesterday seas calmed allowing more conventional methods to contain the spill to get back on track as businesses and residents kept an eye on the ocean currents, wondering when the sheen washing ashore might turn into a heavier coating of oil. Crews put out more containment equipment and repaired some booms damaged in rough weather over the weekend. They also hoped to again try to burn some of the oil on the water's surface.

Chemical dispersants piped 1,500m to the main leak have significantly reduced the amount of oil coming to the surface, BP said. The company also hoped to shut off one of the smaller of three leaks, though it may not reduce the flow very much, said Doug Suttles, BP's chief operating officer.

From the air yesterday, the site of the Deepwater Horizon explosion looked similar to a week ago, except for the appearance of a massive rig brought in to drill a relief well to shut off the spewing oil. However, that would take months.

People along the Gulf Coast have spent weeks living with uncertainty, wondering where and when the oil may come ashore, ruining their beaches and their livelihoods.

The anxiety is so acute that some are seeing and smelling oil where there is none. And even though the dead turtles and jellyfish washing ashore along the Gulf of Mexico are clean, and scientists have yet to determine what killed them, many are sure the flow of crude is the culprit.

The rig was owned by Transocean. Some of the 115 surviving workers aboard when it exploded are suing the company and BP. In lawsuits filed yesterday, three workers say they were kept floating at sea for more than 10 hours, while the rig burned uncontrollably. They are seeking damages.

Guy Cantwell, a spokesman for Transocean, defended the company's response, saying 115 workers got off alive. Two wrongful death suits have also been filed.

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