Come on creative minds solve this fiasco in the Gulf of Mexico if you can
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From: Bret Cahill on 30 May 2010 10:27 > The best way to think outside the box, > is not to create the box in the first place. > > Conventional wisdom has it, that traditional engineering methods are doomed > to failure in the Gulf of Mexico oils spill debacle. > So let me offer a radical procure in its place. > Try treating the oil leak as you might a leaking carotid artery or ruptured > aneurysm. "Balloon on a stick" something like an angioplasty except leave the bag in the pipe: The coefficient of friction inside of an oily pipe is low so the bag will need to be long enough to cover enough area inside of the pipe for the traction force between the balloon and the pipe exceeds the back pressure. The bag will also need to be inserted some distance into the pipe and inflated fast enough so it gets traction before it gets flushed out of the pipe. All this is easy to calculate and design because they know the coefficient of friction between rubberized Kevlar and oily steel. They know the flow rate so they know the pressure profile inside of the pipe. Bret Cahill
From: Bret Cahill on 30 May 2010 12:12 > > > The best way to think outside the box, > > > is not to create the box in the first place. > > > > Conventional wisdom has it, that traditional engineering methods are doomed > > > to failure in the Gulf of Mexico oils spill debacle. > > > So let me offer a radical procure in its place. > > > Try treating the oil leak as you might a leaking carotid artery or ruptured > > > aneurysm. > > > "Balloon on a stick" something like an angioplasty except leave the > > bag in the pipe: > > > The coefficient of friction inside of an oily pipe is low so the bag > > will need to be long enough to cover enough area inside of the pipe > > for the traction force between the balloon and the pipe exceeds the > > back pressure. > > > The bag will also need to be inserted some distance into the pipe and > > inflated fast enough so it gets traction before it gets flushed out of > > the pipe. > > > All this is easy to calculate and design because they know the > > coefficient of friction between rubberized Kevlar and oily steel. > > > They know the flow rate so they know the pressure profile inside of > > the pipe. > > > Bret Cahill > > ============ > This explication seems like a description http://en.wikipedia.org/wiki/Angioplasty Bret Cahill
From: Cwatters on 30 May 2010 14:11 "Bret Cahill" <Bret_E_Cahill(a)yahoo.com> wrote in message news:04413923-569c-4f1d-9296-efde75e2525c(a)g39g2000pri.googlegroups.com... >"Balloon on a stick" something like an angioplasty except leave the >bag in the pipe: > >The coefficient of friction inside of an oily pipe is low so the bag >will need to be long enough to cover enough area inside of the pipe >for the traction force between the balloon and the pipe exceeds the >back pressure. I believe they have plans to do something just like that. Heard on the news about a plan to cut off the broken pipe and insert a new one into it with (I think) an inflatable seal.
From: Bret Cahill on 30 May 2010 14:27 > >"Balloon on a stick" something like an angioplasty except leave the > >bag in the pipe: > > >The coefficient of friction inside of an oily pipe is low so the bag > >will need to be long enough to cover enough area inside of the pipe > >for the traction force between the balloon and the pipe exceeds the > >back pressure. > > I believe they have plans to do something just like that. Heard on the news > about a plan to cut off the broken pipe and insert a new one into it with (I > think) an inflatable seal. They should have had that ready from the beginning. Bret Cahill
From: Cwatters on 31 May 2010 05:40
"Bret Cahill" <BretCahill(a)peoplepc.com> wrote in message news:f1ef8091-1f5d-4cac-99cd-efe1727c8393(a)40g2000pry.googlegroups.com... >> >"Balloon on a stick" something like an angioplasty except leave the >> >bag in the pipe: >> >> >The coefficient of friction inside of an oily pipe is low so the bag >> >will need to be long enough to cover enough area inside of the pipe >> >for the traction force between the balloon and the pipe exceeds the >> >back pressure. >> >> I believe they have plans to do something just like that. Heard on the >> news >> about a plan to cut off the broken pipe and insert a new one into it with >> (I >> think) an inflatable seal. > > They should have had that ready from the beginning. > > > Bret Cahill > > Apparently they did but thought best to try other, more likely to work, ideas first. To do this one means cutting off the existing pipe which will make the flow worse. |