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why can't BP insert another pipe into the damaged
Posted on 6/1/10 at 11:12 am
Posted on 6/1/10 at 11:12 am
pipe AND have some sort of rubber ring (attached to the pipe being inserted) that can be inflated once inside and sealing the leak?
Then add the backfill and shite.
Then add the backfill and shite.
This post was edited on 6/1/10 at 11:14 am
4
Posted on 6/1/10 at 11:20 am to partsman103
I think thats sort of what they are doing with the cap, it has some sort of elastomer seal that seals on the pipe, I think it goes on the outside of the pipe though.
Posted on 6/1/10 at 11:21 am to partsman103
quote:
pipe AND have some sort of rubber ring (attached to the pipe being inserted) that can be inflated once inside and sealing the leak?
Then add the backfill and shite.
Thats easier said than done at 5000 feet below sea level
Posted on 6/1/10 at 11:36 am to partsman103
I would think the opposite would work, putting a larger diameter pipe around the leak to guide the flow to the surface.
ETA: I just don't see the inserting method working. If I turn a can of coke upside down, what would catch more, a straw inserted into the mouth of the can or a funnel that covers the whole top of the can?
ETA: I just don't see the inserting method working. If I turn a can of coke upside down, what would catch more, a straw inserted into the mouth of the can or a funnel that covers the whole top of the can?
This post was edited on 6/1/10 at 11:39 am
Posted on 6/1/10 at 11:38 am to Archie Bengal Bunker
That's basically what they will be doing with the LMRP.
Posted on 6/1/10 at 11:41 am to redstick13
Ice would be an issue.
Posted on 6/1/10 at 11:44 am to redstick13
I thought this LMRP fix was trying to cap the well at the head of the BOP. Meaning there has to be some type of improbable seal formed for it to work. Also, is this the plan that includes trying to seal another BOP on top of the leaking one?
My thought would be to seal nothing, just put a much larger diameter pipe over the spill to guide the flow. No miracle connection needed. The pipe could be tapered to a valve or hose to collect oil. But that is basically the cofferdam idea, and it did not work.
My thought would be to seal nothing, just put a much larger diameter pipe over the spill to guide the flow. No miracle connection needed. The pipe could be tapered to a valve or hose to collect oil. But that is basically the cofferdam idea, and it did not work.
Posted on 6/1/10 at 11:55 am to Archie Bengal Bunker
They couldn't cap it with the LMRP. It's to create a seal around the cut riser and direct the oil and gas to the surface. The formations are at around 13,000 psi so it would be next to impossible to seal off with no sort of fluid in the well.
Posted on 6/1/10 at 12:20 pm to redstick13
IF there is room in the riser (after it's cut), I never understood why they can't just shove pipe straght down the hole (like they are drilling) and start the mud pumping "top kill" but actually already be 5000 to 10000 feet in the well?
At least that way they actually have the well "shut off" subsea. It also eliminates the well pressure being put on the BOP, which I know they are also trying to avoid. This LMRP is just a way of getting it to the surface but not ceasing the flow at all. Storms could jeopardize this setup easily.
At least that way they actually have the well "shut off" subsea. It also eliminates the well pressure being put on the BOP, which I know they are also trying to avoid. This LMRP is just a way of getting it to the surface but not ceasing the flow at all. Storms could jeopardize this setup easily.
Posted on 6/1/10 at 1:50 pm to partsman103
better yet,,, have a pipe that will go inside damaged pipe and also another larger pipe that will go on the outside of damaged pipe. Both equipped with a bladder that will inflate once inserted causing a "chinese finger effect" of sorts.
Posted on 6/1/10 at 1:58 pm to partsman103
Attempting to seal the well off without killing it first would basically create a gigantic pipe bomb. Not a very desirable situation. No seal they could come up with would hold back the formation pressures. The pressures inside would simply build up until the seal (the weakest point) blew to pieces. Then they would likely have a trashed riser top to deal with once again.
Posted on 6/1/10 at 1:59 pm to redstick13
In addition the riser is not made to withstand large internal pressures. It's designed not to collapse under the hydrostatic pressures. Again, capping would only result in a huge pipe bomb.
Posted on 6/1/10 at 2:01 pm to the LSUSaint
quote:
"IF there is room in the riser (after it's cut), I never understood why they can't just shove pipe straght down the hole (like they are drilling) and start the mud pumping "top kill" but actually already be 5000 to 10000 feet in the well?
At least that way they actually have the well "shut off" subsea. It also eliminates the well pressure being put on the BOP, which I know they are also trying to avoid. This LMRP is just a way of getting it to the surface but not ceasing the flow at all. Storms could jeopardize this setup easily."
Because the well is flowing from around the 9 5/8 casing head which is at the wellhead. It doesn't have communications with the inside of the casing which is where you would be trying to kill the well. They would need to fish out the pipe already in the well then perforate the well down deep then kill it.
Posted on 6/1/10 at 2:14 pm to redstick13
quote:
Attempting to seal the well off without killing it first would basically create a gigantic pipe bomb. Not a very desirable situation. No seal they could come up with would hold back the formation pressures. The pressures inside would simply build up until the seal (the weakest point) blew to pieces. Then they would likely have a trashed riser top to deal with once again
what if you had suction/vacum pump in place that would direct the flow thru the smaller pipe and then up to the surface...like to a boat? Would that not eleviate the pressure build up?
Posted on 6/1/10 at 2:39 pm to partsman103
How is that any different than having another riser in place that brings it to surface?
Posted on 6/1/10 at 2:39 pm to redstick13
And why would you want to replace a piece of piping with no mechanical parts with a pump that could fail?
Posted on 6/1/10 at 2:55 pm to redstick13
Why don't they use a thick plastic pipe to put over the leaking pipe instead of metal so ice will not form on it. Or will it? Just asking.
Posted on 6/1/10 at 4:04 pm to KLSU
You know many plastic pipes that are rated to 15,000 psi?
Posted on 6/1/10 at 4:33 pm to redstick13
I think you do something like the guys is suggesting but you use that setup to pump the mud down, which is what they were trying to aclompish in the first place! All you have to do is get it sarted down...they were losing it out of the riser leak (path of least resistance) the first "top kill" try.
All you have to do is get the mud pointed down with a good seal to the inside of the riser and pump the frick out of it.
All you have to do is get the mud pointed down with a good seal to the inside of the riser and pump the frick out of it.
Posted on 6/1/10 at 4:34 pm to the LSUSaint
I will repeat this once again. They would need a seal inside of the riser which is capable of handling very high pressure to bullhead this well. The riser is not capable of handling it. It would blow apart.
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