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Started By
Message
re: Deepwater Horizon - question about the cement
Posted on 1/12/17 at 9:40 pm to SlapahoeTribe
Posted on 1/12/17 at 9:40 pm to SlapahoeTribe
Maybe they used rubber cement instead? Like on accident? It could happen
0
Posted on 1/12/17 at 9:43 pm to slackster
frick this movie. I've worked for a company for the last five years and the backbone of our company is making/selling our own cement to oil wells. It is damn near impossible to explain.
This post was edited on 1/13/17 at 12:38 pm
Posted on 1/12/17 at 9:43 pm to SlapahoeTribe
Shoulda used flex seal on dat, baw.
Posted on 1/12/17 at 9:44 pm to SlapahoeTribe
wow mind blown
This post was edited on 1/12/17 at 9:46 pm
Posted on 1/12/17 at 9:50 pm to SlapahoeTribe
Wasn't cement as much as casing collars. When they were taking mud returns on the workboat instead of in the mud pits they didn't realize they were getting more mud coming back than they were pumping in...not good.
Posted on 1/12/17 at 9:52 pm to SlapahoeTribe
They shoulda set a bridge plug baw
Posted on 1/12/17 at 9:56 pm to SlapahoeTribe
Watch the documentaries on YouTube about it. The ones that are all about 45 minutes in lenth. Should be 2 or 3. They all do an incredible job of explaining step by step how they screwed up. Don't know that you'll get the exact answer you'really looking for but you'll get an idea about what should have been done.
Posted on 1/12/17 at 9:57 pm to Thib-a-doe Tiger
(no message)
This post was edited on 1/12/17 at 11:17 pm
Posted on 1/12/17 at 9:59 pm to SlapahoeTribe
The cement goes around the pipe between the pipe and wellbore in the earth, picture that
Posted on 1/12/17 at 10:20 pm to SlapahoeTribe
Ol Donald Vidrine moved to BR not long after all that happened.
Posted on 1/12/17 at 11:03 pm to SlapahoeTribe
quote:
Suppose they had determined that the cement was faulty (either by running the extra test or from deciding they didn't like the previous results), what would they do about it?
If there are indications of bad cement they can perform a remedial cement job.
quote:
Is there a method for fixing the cement?
Yes, many, depending on what the problem is. The simplest solution is just to pump more cement.
quote:
Or do they have to drill it out and do it over?
Ideally, most of it would be in the annular region between casing and open hole with the losses being in the formation, so you can't take that out, but if it never makes it out of the shoe, then yeah you could drill that. It may not be clear without some troubleshooting.
quote:
Or do they just plug the hole and dig an all new one?
In extreme cases, yes, but probably not a whole new one, just pull back a bit and sidetrack.
quote:
How long would all that take? Is it common?
Sidetracks are fairly common mostly for other reasons.. abandoning the well entirely is not.
Because of the geology of the gulf and the depths involved, cement jobs can be very tough.
quote:
Why not just leave the pipe they used to drill the hole in place? Is the pipe that expensive?
Mostly because it's too small. Wells are a series of smaller pipes inside bigger pipes. It's difficult or impossible to design a well with a single pipe. There is some work on drilling with casing and expandable liners, but it's not quite what you're thinking.
Posted on 1/12/17 at 11:46 pm to slackster
quote:
Agreed, but the lingo used offshore is not exactly commonplace.
Not to mention all of the acronyms that are used out there.
"We were running some SLIJ when the PRS went down so we had to do a MOC to the JSA which wasn't SOP so we were SOL when the ET couldn't fix the PLS so they needed PHI to fly a part out to the GOM PDQ so the OIM decided to issue a PTW to test BOPs."
This post was edited on 1/12/17 at 11:53 pm
Posted on 1/12/17 at 11:51 pm to SlapahoeTribe
Search "squeeze cementing."
Posted on 1/13/17 at 12:00 am to toddzilla
Well in that case I PIIHB bc IWHI
Posted on 1/13/17 at 12:13 am to toddzilla
Posted on 1/13/17 at 1:02 am to SlapahoeTribe
I'm with you, I can't believe they didn't stack the blowout preventer with cement. I can't understand how the overlooked that
This post was edited on 1/13/17 at 1:03 am
Posted on 1/13/17 at 1:15 am to Engineer
quote:
If there are indications of bad cement they can perform a remedial cement job.
What this guys says. In the oilfield terms it's called a "squeeze job". You run in the well with a cement stinger assembly or a RTTS tool and you force more cement around the casing and the formation.
If they had a suspicion the cement job was not good (which they did) they should have run a CBL (Cement Bong Log) on wireline which should have shown them whether or not the cement job was good or bad. They had the equipment on the rig to run the CBL but skipped it because it consumes time and money.
Posted on 1/13/17 at 1:32 am to Engineer
quote:
Suppose they had determined that the cement was faulty (either by running the extra test or from deciding they didn't like the previous results), what would they do about it?
If there are indications of bad cement they can perform a remedial cement job.
quote:
Is there a method for fixing the cement?
Yes, many, depending on what the problem is. The simplest solution is just to pump more cement.
quote:
Or do they have to drill it out and do it over?
Ideally, most of it would be in the annular region between casing and open hole with the losses being in the formation, so you can't take that out, but if it never makes it out of the shoe, then yeah you could drill that. It may not be clear without some troubleshooting.
quote:
Or do they just plug the hole and dig an all new one?
In extreme cases, yes, but probably not a whole new one, just pull back a bit and sidetrack.
quote:
How long would all that take? Is it common?
Sidetracks are fairly common mostly for other reasons.. abandoning the well entirely is not.
Because of the geology of the gulf and the depths involved, cement jobs can be very tough.
quote:
Why not just leave the pipe they used to drill the hole in place? Is the pipe that expensive?
Mostly because it's too small. Wells are a series of smaller pipes inside bigger pipes. It's difficult or impossible to design a well with a single pipe. There is some work on drilling with casing and expandable liners, but it's not quite what you're thinking.
This, and he answered the questions without being an a-hole.
This post was edited on 1/13/17 at 1:38 am
Posted on 1/13/17 at 1:37 am to toddzilla
quote:
so the OIM decided to issue a PTW to test BOPs."
I haven't watched the movie yet. I'm guessing that the BOP wasn't tested.
Posted on 1/13/17 at 2:07 am to ByteMe
quote:
I haven't watched the movie yet. I'm guessing that the BOP wasn't tested.
The rams were actuating on the BOP. They couldn't shear the volume of metal inside.
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