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re: A possible explanation of what happened on the Deepwater Horizon

Posted on 5/5/10 at 9:06 am to
Posted by Alatgr
Mobeezy, Alabizzle
Member since Sep 2005
17660 posts
Posted on 5/5/10 at 9:06 am to
quote:

Putty


I understood every fricking word of that.
Posted by tiger91
In my own little world
Member since Nov 2005
36800 posts
Posted on 5/5/10 at 9:12 am to
Just how will they investigate this? I'm not being ugly.

The rig is at or near the bottom of the Gulf. The people actually operating in the floor area are gone, tragically. The records of ALL tests I would assume are gone unless they're sent by computer to some other location.

NOW, wouldn't there be a case of faulty memories? Covering one's arse? Lying on the part of some to exploit things for more money?

How is a thorough investigation completed? And the article linked by Fred I think mentioned leaking hydraulics ... is it possible that that happened DUE to the explosion/sinking? I'm just asking my random questions ...

AND are there really 4 safety measures in place so that this doesn't happen?????
Posted by AP83
Cottonport
Member since Sep 2009
2729 posts
Posted on 5/5/10 at 10:27 am to
quote:

could they have cemented into the BOP preventing it from working properly


This is very likely the cause which is why i'm tired of everyone that keeps saying it is the fault of the BOP or the BOP failed. If this is what happened there is no BOP in the world that could have functioned.
Posted by redstick13
Lower Saxony
Member since Feb 2007
38685 posts
Posted on 5/5/10 at 1:00 pm to
This was either a long string or a tie back which means the casing was run to just below the BOP inside the wellhead. With that being the case, they would not have detected the failed cement and casing seals until the gas hit the riser which would have likely given them only a few seconds to close the BOP. If high pressure gas were already blowing through the BOP they may not have been able to stop the flow.
Posted by gliterein
Member since Aug 2008
201 posts
Posted on 5/5/10 at 1:48 pm to
quote:

This was either a long string or a tie back which means the casing was run to just below the BOP inside the wellhead. With that being the case, they would not have detected the failed cement and casing seals until the gas hit the riser which would have likely given them only a few seconds to close the BOP. If high pressure gas were already blowing through the BOP they may not have been able to stop the flow.


why isn't that a design flaw if that assembly reduces your responsiveness so much?
Posted by AP83
Cottonport
Member since Sep 2009
2729 posts
Posted on 5/5/10 at 1:52 pm to
quote:

why isn't that a design flaw if that assembly reduces your responsiveness so much?


In other countries where they do true deep water drilling there are sensors that automatically shut the bop when pressure builds up and starts to rise. This is not required in the Gulf because it is considered fairly shallow water. It needs to be required and possibly could have saved this rig.
Posted by redstick13
Lower Saxony
Member since Feb 2007
38685 posts
Posted on 5/5/10 at 1:53 pm to
quote:

In other countries where they do true deep water drilling there are sensors that automatically shut the bop when pressure builds up and starts to rise. This is not required in the Gulf because it is considered fairly shallow water. It needs to be required and possibly could have saved this rig.


Rubbish. Did you just make this up? The Deepwater Discovery Deep Seas drilled a well in the deepest water depth ever, in the Gulf of Mexico.

This post was edited on 5/5/10 at 1:56 pm
Posted by YatTigah
Lakeview, New Orleans, LA
Member since May 2010
517 posts
Posted on 5/5/10 at 1:58 pm to
quote:

Putty



Posted by redstick13
Lower Saxony
Member since Feb 2007
38685 posts
Posted on 5/5/10 at 2:01 pm to
Furthermore if you knew anything about well control you would know that the longer the riser the more time you would have to detect a leak at the casing seals.
Posted by TigerFred
Feeding hamsters
Member since Aug 2003
27223 posts
Posted on 5/5/10 at 2:07 pm to
quote:

In other countries where they do true deep water drilling


So what is being drilled in the Deepwater Gulf of Mexico isn't true deepwater drilling?

If you don't have a clue don't respond.
Posted by mguari2
NOLA
Member since Sep 2008
43 posts
Posted on 5/5/10 at 3:20 pm to
If there was no lock down on the casing hanger assembly and bottom hole pressure acting beneath it on that cross sectional area, it's very likely the a load on the order of ~1.5-2 million lbs was reached and parted the casing sending it and the hanger into the BOP rendering it inoperable. Just a theory
Posted by lsugradman
Member since Sep 2003
8626 posts
Posted on 5/5/10 at 3:55 pm to
quote:

fairly shallow water.


like 4000 to 7000 feet deep?
Posted by redstick13
Lower Saxony
Member since Feb 2007
38685 posts
Posted on 5/5/10 at 3:56 pm to
quote:

If there was no lock down on the casing hanger assembly and bottom hole pressure acting beneath it on that cross sectional area, it's very likely the a load on the order of ~1.5-2 million lbs was reached and parted the casing sending it and the hanger into the BOP rendering it inoperable. Just a theory



I can maybe buy this.
This post was edited on 5/5/10 at 4:37 pm
Posted by windriver
West Monroe/San Diego
Member since Mar 2006
8656 posts
Posted on 5/5/10 at 4:07 pm to
quote:

unsufficent
Posted by COTiger
Colorado
Member since Dec 2007
16844 posts
Posted on 5/5/10 at 4:22 pm to
Well, the i key is next to the u key.
Posted by hobo with a rolex
everywhere
Member since Sep 2006
3203 posts
Posted on 5/5/10 at 8:51 pm to
Putty - that was epic

thank you for unfricking the original post enough for me to fricking understand
Posted by htownjeep
Republic of Texas
Member since Jun 2005
7617 posts
Posted on 5/5/10 at 9:10 pm to
quote:

Rubbish. Did you just make this up? The Deepwater Discovery Deep Seas drilled a well in the deepest water depth ever, in the Gulf of Mexico.

Not the deepest ever. Don't get me wrong, it's very deep. But not even close to the deepest.
Posted by lsugradman
Member since Sep 2003
8626 posts
Posted on 5/5/10 at 9:21 pm to
Whats the deepest water depth drilled in?
Posted by DaphneTigah
Flying under the radar.
Member since Dec 2007
4981 posts
Posted on 5/5/10 at 9:35 pm to
quote:

Putty




Posted by notiger1997
Metairie
Member since May 2009
58412 posts
Posted on 5/5/10 at 9:48 pm to
Best post I have seen so far Putty.
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