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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?


To: HPilot who wrote (29018)5/29/2010 6:01:04 PM
From: average joe  Read Replies (2) | Respond to of 36917
 
They're just not prepared for big gas kicks at that depth.

The viable solution is the one they won't use.

oil-price.net




To: HPilot who wrote (29018)5/29/2010 8:12:31 PM
From: Wharf Rat  Read Replies (1) | Respond to of 36917
 
'Force mud to stop the flow and plug with concrete seems reasonable to me."

That was the idea of the top kill, and the various junk shots.

Decided it's not gonna work, and they are gonna replace the lower marine riser package.

Deepwater Oil Spill - The LMRP Attempt and a Live Open Thread
Posted by Gail the Actuary on May 29, 2010 - 6:30pm

BP is now saying that its Top Kill approach has failed, and it is moving on to LMRP. A few comments from the press:

Top Kill Fails To Plug Oil Spill, BP Now To Try LMRP Cap

BP said preparations have been made for the possible deployment of the lower marine riser package (LMRP) cap containment system, which would be complex because of the depth of the oil leak.

Deployment would first involve removing the damaged riser from the top of the failed BOP to leave a cleanly-cut pipe at the top of the BOP's LMRP.

The cap, a containment device with a sealing grommet, will be connected to a riser from the Discoverer Enterprise drillship, 5,000 feet above on the surface, and placed over the LMRP with the intention of capturing most of the oil and gas flowing from the well.

Mr Suttles said it should capture "most of the oil" and was expected to last at least four days but "we cannot guarantee success at this time."

This is a diagram that Heading Out posted a few days ago, of the LMRP.

The Lower Marine Riser Package (LMRP) option

According to Upstream Online:

If the top kill does not work, the UK supermajor plans to cut off the riser from the lower marine riser package (LMRP) and attach another to collect the flow.

The device would be coupled to a flex joint above the LMRP with a sealing grommet to keep water out of the flow and control gas hydrate formation.

The cap also has valves to inject methanol or hot water into the production stream.

BP has already lowered the LMRP cap to the seafloor so it could be deployed immediately after a failed top kill.

Installing the cap would take about four days, Suttles said, and it could be in place early next week.

The LMRP cap would allow BP to capture as much of the flow from the well as possible while it works on other options to kill the well, he said.

He announced Wednesday that BP preferred option in that instance would be to add a second BOP on top of the first.
theoildrum.com