ENVR Oil Well Lacked Safeguard Device

FarmerJohn

Has No Life - Lives on TB
Full disclosure: I own 800+ shares of Transocean (RIG).

FJ

Officials Say Leak Grows Fivefold

By RUSSELL GOLD, BEN CASSELMAN And GUY CHAZAN

Federal officials said Wednesday the oil spill spewing crude into the Gulf of Mexico is five times the size of previous estimates, as a significant new leak was discovered.

The Deepwater Horizon oil rig, which exploded and sank last week, didn't have a remote-control shut-off switch used in two other major oil-producing nations as last-resort protection against underwater spills.

The lack of the device, called an acoustic switch, could amplify concerns over the environmental impact of offshore drilling after the accident, which led to the loss of 11 lives and has created one of the largest-ever oil spills in U.S. water.

On Wednesday, Rear Adm. Mary Landry said that 5,000 barrels a day were now estimated to be leaking, up from the previous estimate of 1,000 barrels. (See article on page A8.)

U.S. regulators don't mandate use of the remote-control device on offshore rigs, and the Deepwater Horizon, hired by oil giant BP PLC, didn't have one. With the remote control, a crew can attempt to trigger an underwater valve that shuts down the well even if the oil rig itself is damaged or evacuated.

The efficacy of the devices is unclear. Major offshore oil-well blowouts are rare, and it remained unclear Wednesday evening whether acoustic switches have ever been put to the test in a real-world accident. When wells do surge out of control, the primary shut-off systems almost always work. Remote control systems such as the acoustic switch, which have been tested in simulations, are intended as a last resort. Nevertheless, regulators in two major oil-producing countries, Norway and Brazil, in effect require them. Norway has had acoustic triggers on almost every offshore rig since 1993.

The U.S. considered requiring a remote-controlled shut-off mechanism several years ago, but drilling companies questioned its cost and effectiveness, according to the agency overseeing offshore drilling. The agency, the Interior Department's Minerals Management Service, says it decided the remote device wasn't needed because rigs had other back-up plans to cut off a well.

The U.K., where BP is headquartered, doesn't require the use of acoustic triggers.

On all offshore oil rigs, there is one main switch for cutting off the flow of oil by closing a valve located on the ocean floor. Many rigs also have automatic systems, such as a "dead man" switch as a backup that is supposed to close the valve if it senses a catastrophic failure aboard the rig.

As a third line of defense, some rigs have the acoustic trigger: It's a football-sized remote control that uses sound waves to communicate with the valve on the seabed floor and close it.

An acoustic trigger costs about $500,000, industry officials said. The Deepwater Horizon had a replacement cost of about $560 million, and BP says it is spending $6 million a day to battle the oil spill. On Wednesday, crews set fire to part of the oil spill in an attempt to limit environmental damage.

Some major oil companies, including Royal Dutch Shell PLC and France's Total SA, sometimes use the device even where regulators don't call for it.

Transocean Ltd., which owned and operated the Deepwater Horizon and the shut-off valve, declined to comment on why a remote-control device wasn't installed on the rig or to speculate on whether such a device might have stopped the spill. A BP spokesman said the company wouldn't speculate on whether a remote control would have made a difference.

Much still isn't known about what caused the problems in Deepwater Horizon's well, nearly a mile beneath the surface of the Gulf of Mexico. It went out of control, sending oil surging through pipes to the surface and causing a fire that ultimately sank the rig.

Unmanned submarines that arrived hours after the explosion have been unable to activate the shut-off valve on the seabed, called a blowout preventer.

BP says the Deepwater Horizon did have a "dead man" switch, which should have automatically closed the valve on the seabed in the event of a loss of power or communication from the rig. BP said it can't explain why it didn't shut off the well.

Transocean drillers aboard the rig at the time of the explosion, who should have been in a position to hit the main cutoff switch, are among the dead. It isn't known if they were able to reach the button, which would have been located in the area where the fire is likely to have started. Another possibility is that one of them did push the button, but it didn't work.

Tony Hayward, BP's CEO, said finding out why the blowout preventer didn't shut down the well is the key question in the investigation. "This is the failsafe mechanism that clearly has failed," Mr. Hayward said in an interview.

Lars Herbst, regional director of the Minerals Management Service in the Gulf of Mexico, said investigators are focusing on why the shut-off valve failed.

Industry consultants and petroleum engineers said that an acoustic remote-control may have been able to stop the well, but too much is still unknown about the accident to say that with certainty.

Rigs in Norway and Brazil are equipped with the remote-control devices, which can trigger the blowout preventers from a boat if the electric cables connecting the valves to the drilling rig are damaged. While U.S. regulators have called the acoustic switches unreliable and prone, in the past, to cause unnecessary shut-downs, Inger Anda, a spokeswoman for Norway's Petroleum Safety Authority, said the switches have a good track record in the North Sea. "It's been seen as the most successful and effective option," she said.

The manufacturers of the equipment, including Kongsberg Maritime AS, Sonardyne Ltd. and Nautronix PLC, say their equipment has improved significantly over the past decade.

The Brazilian government began urging the use of the remote-control equipment in 2007, after an extensive overhaul of its safety rules following a fire aboard an oil platform killed 11 people, said Raphael Moura, head of safety division at Brazil's National Petroleum Agency. "Our concern is both safety and the environment," he said.

Industry critics cite the lack of the remote control as a sign U.S. drilling policy has been too lax. "What we see, going back two decades, is an oil industry that has had way too much sway with federal regulations," said Dan McLaughlin, a spokesman for Democratic Florida Sen. Bill Nelson. "We are seeing our worst nightmare coming true."

U.S. regulators have considered mandating the use of remote-control acoustic switches or other back-up equipment at least since 2000. After a drilling ship accidentally released oil, the Minerals Management Service issued a safety notice that said a back-up system is "an essential component of a deepwater drilling system."

The industry argued against the acoustic systems. A 2001 report from the International Association of Drilling Contractors said "significant doubts remain in regard to the ability of this type of system to provide a reliable emergency back-up control system during an actual well flowing incident."

By 2003, U.S. regulators decided remote-controlled safeguards needed more study. A report commissioned by the Minerals Management Service said "acoustic systems are not recommended because they tend to be very costly.
"

I wonder what party was in charge in 2003?

http://online.wsj.com/article/SB20001424052748704423504575212031417936798.html
 

Laurane

Canadian Loonie
The U.K., where BP is headquartered, doesn't require the use of acoustic triggers.

....they have been arguing about the efficacy of acoustic switches for a decade at least.....if nobody could say absolutely that the switch would help, why use it? Even in 2003 there was still no agreement.

So all the early arguments about its use occurred during the Presidency of Bill Clinton?

That wasn't what you wanted to hear was it?...........
 

undead

Veteran Member
The U.K., where BP is headquartered, doesn't require the use of acoustic triggers.

....they have been arguing about the efficacy of acoustic switches for a decade at least.....if nobody could say absolutely that the switch would help, why use it? Even in 2003 there was still no agreement.

So all the early arguments about its use occurred during the Presidency of Bill Clinton?

That wasn't what you wanted to hear was it?...........

No, I think what was meant here was that Obama had over a year to require it (if it really worked anyway - if a valve is so damaged that wired activation fails, then an acoustic activation is meaningless and not worth the half-million) and did nothing.

I'm pretty sure that's the message anyway.


:lol:
 

Garryowen

Deceased
Perhaps we will never be able to find out exactly what failed, and why. It's pretty hard to examine something a mile down in the ocean. If the acoustic valve would have guaranteed being able to shut off the well, it would have been well-worth the investment. But, it seems not to have been used in the past, and has not been demonstrated to be effective in the field. That's a big hunk of change to be investing in something that is unproven in actual practice.

Of course, BP will be villified by BO for not caring about the environment or its employees.

regards,

Garryowen
 

BoatGuy

Inactive
Of course, BP will be villified by BO for not caring about the environment or its employees.

And, the not-so-funny part is that BP seems to have more safety regulations than ANY other oil company that I've ever worked for. Even more than Chevron, and that's saying something. Sometimes, doo doo occurs.
 

Jamestown Girl

Veteran Member
I can't imagine that the switch could have stopped it. This rig had 2 BOPs one on rig floor, 1 on ocean floor. They automatically kick in. My undertanding from reading other board with offhore guys is that a gas bubble kicked with over 20,000 psi. Now what caused that is up for grabs. Some speculate liner broke while they were cementing, but there is a flare in the photo and they wouldn't have a flare while cementing so who knows. That's a good kick. I don't pretend to know all about this but don't know I'd a switch would have made a difference.

Know a lot of folks don't like the industry and BP downstream has had there problems but their upstream offshore group here in Houston is strict on the environment and safety. Lots of contract folks on that rig too. Halliburton, SLB, Cameron. We'll have to wait and see.
 
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