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Message
re: Links to live feeds from remotely operated vehicles (ROV)
Posted on 5/30/10 at 5:49 pm to JudgeHolden
Posted on 5/30/10 at 5:49 pm to JudgeHolden
quote:
Dang. Come to think of it, that sounds like a pretty good idea. Heck, it sure clogs up my drains at home!
When all the talk started about a kill, I thought to myself, how in the hell are the going to pump golf balls, tires and rope through a 3" pipe. This is crazy.
Crazy as it seems, if someone in the know, knows how to forward this to BP, I'd appreciate it.
0
Posted on 5/30/10 at 5:49 pm to JudgeHolden
Maybe this has been asked before, but I have two stupid questions.
1. If they can feed mud into the BOP, why can't they feed a chemical to prevent hyradtes from forming. Then they could use the coffer dam approach?
2. If they can feed mud into the line, why not put suction on the lines and pull the oil topside?
Thanks for your replies!
1. If they can feed mud into the BOP, why can't they feed a chemical to prevent hyradtes from forming. Then they could use the coffer dam approach?
2. If they can feed mud into the line, why not put suction on the lines and pull the oil topside?
Thanks for your replies!
Posted on 5/30/10 at 6:14 pm to RPC4LSU
quote:
2. If they can feed mud into the line, why not put suction on the lines and pull the oil topside?
If you put suction on the line, then you are going to bring in seawater. Crystals will form and you're back to the "top hat" problem.
The flow is going to choose the least path of resistance. The 3" choke and kill lines would not be that.
Posted on 5/30/10 at 7:11 pm to JudgeHolden
quote:
Puree some hair.
Ok, now I will try to be serious. I think they put in "lost circulation material" which is fibrous like hair. You can see some examples of what they might use here. LINK You use LCM to seal up leaky formations downhole.
I read somewhere that they also used frac balls. You can see what those look like here.
LINK
Posted on 5/30/10 at 7:16 pm to nuwaydawg
Right. Don't think you can pull enough suction on a 3 inch line to keep oil under pressure from taking the "downhill path" through the much larger riser.
Posted on 5/30/10 at 7:21 pm to JudgeHolden
Why not pump water in the kill and choke lines let the hydrated junk shot it for you at least let you get a good start on pumping kill mud down hole. Or better yet water with the junk.
This post was edited on 5/30/10 at 7:23 pm
Posted on 5/30/10 at 7:21 pm to JudgeHolden
<---- knows nothing about petroleum engineering, but while they were pumping mud they were apparently preventing oil from flowing, although they can not get the pressure gradient they want, why not tell BP to keep pumping mud to prevent further oil from leaking until the relief well is complete
is this too expensive? if so screw them
is the mud a danger to the enviroment ?
is this too expensive? if so screw them
is the mud a danger to the enviroment ?
Posted on 5/30/10 at 7:24 pm to Tigerpaw123
quote:
why not tell BP to keep pumping mud to prevent further oil from leaking until the relief well is complete
Not that much drilling mud in the world, IMHO.
Plus, it will eventually erode all of the metal that is now holding back a lot of the oil that would otherwise flow.
Posted on 5/30/10 at 7:28 pm to Oyster
quote:
Why not pump water in the kill and choke lines let the hydrated junk shot it for you at least let you get a good start on pumping kill mud down hole. Or better yet water with the junk.
Note!!!! This is a WAG. Wild A__ Guess.
Water just is not heavy enough. If you try to blast water in, you will just get water and oil spewing out the end. Oil can't press water down into the hole. Seawater is about 8.5 ppg (pounds per gallon), while oil is about seven. Kill mud is about 18. The weight is what makes it work.
Interesting question: Would it freeze up and create an ice clog? You should have a big pressure drop as the oil moves across the constrictions in the BOPs, so you should have a pretty good temperature drop. Could they freeze it up?
I am thinking probably not, because that oil is coming up hot. Bottom hole temperature is probably 350F.
Posted on 5/30/10 at 7:29 pm to JudgeHolden
I have had a very stupid idea I suppose but have to get it off my chest. In surgery when they do a knee replacement they use a inflatable tourniquet much like a giant blood pressure cuff. They inflate prior to surgery to reduce blood loss. (Works very well)
Obviously BP can do the insertion tube but why not fit it with a very long/huge tourniquet around the out side of the pipe. to create the seal. They can then valve the insertion tube. I realize that they may not be able to completely shut it off due to pressure from the well but they may be able to partially cut it down enough for the mud to run down the well side of the line.
They had to have thought of this type of thing already.
Obviously BP can do the insertion tube but why not fit it with a very long/huge tourniquet around the out side of the pipe. to create the seal. They can then valve the insertion tube. I realize that they may not be able to completely shut it off due to pressure from the well but they may be able to partially cut it down enough for the mud to run down the well side of the line.
They had to have thought of this type of thing already.
Posted on 5/30/10 at 7:29 pm to JudgeHolden
Can someone look at the ROV camera shot and tell what is happening?
Posted on 5/30/10 at 7:31 pm to COTiger
What is a mud mat?
Posted on 5/30/10 at 7:34 pm to Tigerpaw123
quote:
What is a mud mat?
I thought it was like a board road. But clearly that is not what you are referring to. Any context?
Posted on 5/30/10 at 7:35 pm to Tigerpaw123
I am guessing the mud mat will provide a stable surface for the equipment that will be used to cut the riser and/or attach the lower marine thing
Posted on 5/30/10 at 7:36 pm to JudgeHolden
quote:
Any context?
on the bp site rov camera it is typed on the screen "deploying mud mats"
Posted on 5/30/10 at 7:37 pm to MoreOrLes
quote:
Obviously BP can do the insertion tube but why not fit it with a very long/huge tourniquet around the out side of the pipe.
Not sure what you mean. Riser has 2 inch thick steel walls. No tourniquet I know of could constrict that.
There was some talk on the boards about trying to get hydraulic tools down there to crimp the riser. I think the concern there is that you will build up huge pressures on the BOP stack, which may burst parts of it. You have got to try to control the pressure down hole.
Posted on 5/30/10 at 7:39 pm to Tigerpaw123
I looked back thru the Deepwater response archived graphics and found this graphic for the LRMP Cap.
BP: Containment Contingency Option (LMRP) - May 25, 2010
BP: Containment Contingency Option (LMRP) - May 25, 2010
Posted on 5/30/10 at 7:39 pm to JudgeHolden
There is something called an inflatable packer. But you would have to be able to get it down there, and I don't think it could hold this kind of pressure.
Plus, remember, there is drill pipe in the BOP, so you don't have a way to get the packer downhole.
LINK
Plus, remember, there is drill pipe in the BOP, so you don't have a way to get the packer downhole.
LINK
Posted on 5/30/10 at 8:12 pm to JudgeHolden
I was in the kitchen at the top of the hour and the national news was on the radio. They were discussing the LMRP option and the announcer said one of the risks was the possiblity of human error by one of the ROV operators. Said they have been working a brutal work schedule.
Posted on 5/30/10 at 9:32 pm to COTiger
quote:
Said they have been working a brutal work schedule.
Sure. And I am bet they are not used to having the eyes of the world on them as they work.
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