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re: A good description of what happenend
Posted on 6/19/10 at 2:15 pm to jeff967
Posted on 6/19/10 at 2:15 pm to jeff967
In summary BP took way to many shortcuts. I'm no expert, but I worked for five years in the completion phase of wells, (I filtered completion fluids). The only time sea water was used as completion fluids was on low pressure, shallow wells in the marsh. The return fluid flow was a certain indicator of a problem which was preceded by numerous shortcuts.
1
Posted on 6/20/10 at 2:53 am to bpinson
quote:
In summary BP took way to many shortcuts
Exactly!
If when they displaced the well with sea water and the casing shot up in to the BOPs there was nothing the driller or anyone else could have done at this point. Don't blame the driller when you don't know what happened.
They may simply not had enough time to do anything about it because it was to late when they saw the signs.
BP should have done a squeeze job and followed other common oilfield practices and this would have never happened. The BOP was never designed to work in the type of situation they put it in and should never gotten to that point! There are already practices in place to prevent this. They wanted to save money plain and simple!
Posted on 6/20/10 at 10:07 pm to offshoretrash
All they had to do was take the mud returns on the rig and monitor them instead of sending the returns to a workboat. That was just stupid.
Posted on 6/21/10 at 7:35 am to bpinson
quote:
The only time sea water was used as completion fluids was on low pressure, shallow wells in the marsh.
Dont think this qualifies as a completion fluid does it? The water was behind casing and plugs. There were no perfs in this well.
Posted on 6/21/10 at 1:56 pm to lsugradman
Maybe not, but the point is, the only time we aver used salt water was on inland barges in shallow wells that were being worked over. When I was offshore we would use calcium chloride/bromide and zinc bromide in order to equalize the hydrostatic pressure the mud represented. Never ever did we use salt water to displace drilling mud and we damn sure didn't send the mud returns overboard to a workboat. But what do I know?
Posted on 6/21/10 at 1:59 pm to bpinson
Im about to bump my post from earlier, if you want to good article and description of what happened, why it happened and what needs to change I suggest taking a look at it.
Title: In depth summary of causes
Title: In depth summary of causes
Posted on 6/21/10 at 2:25 pm to GREENHEAD22
quote:
When I was offshore we would use calcium chloride/bromide and zinc bromide in order to equalize the hydrostatic pressure the mud represented.
Thats the thing, the salt water was never intended to equalize pressures ie hold back the formation. The drilling mud was displaced w sea water with the belief that the formation pressure had been isolated from the wellbore which it obviously wasnt.
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