Elgin/Franklin downman
Discussion
http://www.bbc.co.uk/news/uk-scotland-north-east-o...
Anyone heard anything? Have heard full down man of the jack up and platrorm.
Anyone heard anything? Have heard full down man of the jack up and platrorm.
see in the bbc report that it was reported to be gas bubbling up under the platform, wonder if that was under the wellhead section or the drilling rig? could be a tricky one to fix if its a leak from a caisson somewhere. is the Elgin field all HPHT wells (high pressure high temperature)
Suspect Total will be checking the local companies about hiring in a ROV to go have a look
Suspect Total will be checking the local companies about hiring in a ROV to go have a look
chrisj_abz said:
see in the bbc report that it was reported to be gas bubbling up under the platform, wonder if that was under the wellhead section or the drilling rig? could be a tricky one to fix if its a leak from a caisson somewhere. is the Elgin field all HPHT wells (high pressure high temperature)
Suspect Total will be checking the local companies about hiring in a ROV to go have a look
HPHT http://www.uk.total.com/activities/central_graben....Suspect Total will be checking the local companies about hiring in a ROV to go have a look
I'd say any available boat in the area is going to be there. I was wondering if it was there firewater/seawater system overboard dumps causing the bubbling and people putting 2 + 2 together and getting 5.
thought it was part of the whole shearwater system, cheers for the link.
we've done a bit of ROV work for Total in the past, heard we got asked today what we have available.
wouldnt have thought they would have totally downmanned without some confirmation of gas somewhere, a rather scary situation none the less!
we've done a bit of ROV work for Total in the past, heard we got asked today what we have available.
wouldnt have thought they would have totally downmanned without some confirmation of gas somewhere, a rather scary situation none the less!
Due to the gas they won't be able to get a vessel in close, even to have a look with a standard tethered ROV. They will have to use an autononous ROV, launched from a distance.
I'm trying to think of a way to drop many tons of cement on the seabed at the leak location, which could stem the leak sufficiently for them to be able to actually get in and work at the location?? It's not exactly technical but could work.
The leak, I have been told, is coming from the seabed around the base of an existing tree, with obviously no way to shut it off.
I'm no expert on directional drilling but that could be a possibility to provide a relief well, with the directional drilling rig located way of location.
Wish I was working on this as I love these kind of challenges
And very glad to hear they have abandoned all personnel from platforms in the vicinity.
There are gas leaks each and every day in the North Sea, most trees have gas escaping from tree caps etc. No one cares due to the immense cost of shutting down and repairing these small leaks, which in a lot of circumstances would mean a large intervention including well ops and a new tree.
This leak is certainly more interesting and challenging as it is coming from the seabed and from a HP/HT well. I'll be watching this with interest.
I'm trying to think of a way to drop many tons of cement on the seabed at the leak location, which could stem the leak sufficiently for them to be able to actually get in and work at the location?? It's not exactly technical but could work.
The leak, I have been told, is coming from the seabed around the base of an existing tree, with obviously no way to shut it off.
I'm no expert on directional drilling but that could be a possibility to provide a relief well, with the directional drilling rig located way of location.
Wish I was working on this as I love these kind of challenges
And very glad to hear they have abandoned all personnel from platforms in the vicinity.
There are gas leaks each and every day in the North Sea, most trees have gas escaping from tree caps etc. No one cares due to the immense cost of shutting down and repairing these small leaks, which in a lot of circumstances would mean a large intervention including well ops and a new tree.
This leak is certainly more interesting and challenging as it is coming from the seabed and from a HP/HT well. I'll be watching this with interest.
I have been told that the well which was just drilled before this happened had been perforated. Whether this is connected or not I guess we won't know for a good while. Either way it looks like this could rumble on for a while.
What about the Flare still being lit? Surely if the wind gusts it could lift the gas high enough to ignite? Is this just media specualtion or a real threat?
What about the Flare still being lit? Surely if the wind gusts it could lift the gas high enough to ignite? Is this just media specualtion or a real threat?
Edited by danrc on Thursday 29th March 12:32
from what i am lead to believe currently
Total was P&A a well , some how they have done something to the HOD formation which is a tight gas formation normally does not flow but is saturated with natural gas H2S and C02
Some how a fracture has gone horizontal then on a vertical plane and came the out casing / conductor area around G4 which is a dead well .
A relief well wont do much good if that is the situation as the size of HOD formation will be massive
Total was P&A a well , some how they have done something to the HOD formation which is a tight gas formation normally does not flow but is saturated with natural gas H2S and C02
Some how a fracture has gone horizontal then on a vertical plane and came the out casing / conductor area around G4 which is a dead well .
A relief well wont do much good if that is the situation as the size of HOD formation will be massive
struan80 said:
Due to the gas they won't be able to get a vessel in close, even to have a look with a standard tethered ROV. They will have to use an autononous ROV, launched from a distance.
I'm trying to think of a way to drop many tons of cement on the seabed at the leak location, which could stem the leak sufficiently for them to be able to actually get in and work at the location?? It's not exactly technical but could work.
The leak, I have been told, is coming from the seabed around the base of an existing tree, with obviously no way to shut it off.
At the moment there are conflicting reports as some say its from under the platform and others from the tree topsides.I'm trying to think of a way to drop many tons of cement on the seabed at the leak location, which could stem the leak sufficiently for them to be able to actually get in and work at the location?? It's not exactly technical but could work.
The leak, I have been told, is coming from the seabed around the base of an existing tree, with obviously no way to shut it off.
If it's tree that means a few barriers are passing or via the annulus which has also been mentioned on the oil drum as supposedly they were working on the annulus at the time trying to stop an increase in pressure on the annulus.
It's a bugger total aren't being open on what was ongoing at the time of the leak commencing as that would give a lot better idea on the issue.
But as you say if it's from the base of the riser/seabed it's coming from it's going to be hard to stop. Even topsides from the tree is going to be hard as they have to get onto the platform and with no F&G detection that's going to be hard.
Jees there was a lot of gas and condensate running through here, 34" gas export pipeline \o/, no wonder it's taking forever for them to complete venting off pipework and process upstream of SSIV/ESDV's to flare!
Pipelines: Condensate export 24” x 24 miles/61 cm x 38km pipeline –
Gas Export: 34” x 292 miles/86cm x 468km SEAL
Interfield: Two 12” x 3.2 miles/30cm x 5.2km lines exporting well fluid
from Franklin to Elgin PUQ.
Brochure for sados like me
http://www.uk.total.com/pdf/Library/PUBLICATIONS/L...
We should get a pistonheads crew together to solve this for them ....lol
I think the flare remaining lit is a good thing at the moment as it shows that the actual leak is not sufficient to cause an explosion in the area.
Pipelines: Condensate export 24” x 24 miles/61 cm x 38km pipeline –
Gas Export: 34” x 292 miles/86cm x 468km SEAL
Interfield: Two 12” x 3.2 miles/30cm x 5.2km lines exporting well fluid
from Franklin to Elgin PUQ.
Brochure for sados like me
http://www.uk.total.com/pdf/Library/PUBLICATIONS/L...
We should get a pistonheads crew together to solve this for them ....lol
I think the flare remaining lit is a good thing at the moment as it shows that the actual leak is not sufficient to cause an explosion in the area.
Edited by struan80 on Thursday 29th March 14:55
young_bairn said:
What I don't get is why would the platform still be flaring? The platform is shut down and was probably blown down. Either way there should be no gas to flare off?
passing riser XXV's would be my bet. Never seen a riser XXV thats tight and also possibly SSSV and tree valves passing but a lot less likely.westtra said:
passing riser XXV's would be my bet. Never seen a riser XXV thats tight and also possibly SSSV and tree valves passing but a lot less likely.
I am used to lp production so I guess hp wells are more likely to pass through hydraulic gate valves? Our place is blown down in seconds.young_bairn said:
I am used to lp production so I guess hp wells are more likely to pass through hydraulic gate valves? Our place is blown down in seconds.
Depends what you class as LP. There oil export riser XXV pressure on the pipeline will float 50 to 70 odd bar and the gas pipeline at a guess 100+ bar.Gassing Station | Scotland | Top of Page | What's New | My Stuff