Is anyone familiar with the acoustic ESDV leak testing methods and know of any recommended / best practice available? I have heard that this could be used as alternatives to the normal leak testing process that requires full depressurization of the pipeline.
Mechanical Operations Engineer
Oil...
hydromarine,
Morning, they are ball valves, operated over 5 years ago, equalized pressures, had differential pressures across them, cycled the pressure, pumped in methanol, MEG, venting, heating wraps etc and they still said no :-(
Mechanical Operations Engineer
Oil, Gas & Power
Gents,
We have subsea valves that have not been functioned for a while.
As Left: Filled with MEG at ambient
Flowing pressure: 120 barg
Max DP: 120 barg
Content found initially: Hydrate
Valve condition: clear evidence of the valve passing.
The line now is clean and clear of hydrates, however...
Emanoelman,
Thanks for the response, this is pipeline with direct connection to the well. There's always the possibility of vacuum from the well and pressures up to about 150barg.
I do understand your point on onorous repairs procedures and thermal deviation which I think are rightly...
Gents,
I am currently looking at the possibility of replacing our WI PL with something completely different. This will be a big project and I am thinking of going for a plastic lined pipeline system
Is there any integrity issues that anyone can think of that should be considered for WI...
Costin,
As above, you'd need some guidance on this from someone with greater deal of experience. You shouldn't just be worried about creep. There're other things that will affect a pipeline
If it is a pipeline, propose a pigging program for it if possible. This will give you an indication of...
Hydromarine,
Thanks for the response, however I've kicked off a complete refurbishment, I was trying to find out if the contractor was charging excessive fees for no reason at all.
Mechanical Operations Engineer
Oil, Gas & Power
Running an engine on raw gas is very tricky if it's not designed for it.
You really need a filter, seperator and some form of water / condy handling unit.
I think the issue you've got is called "wet gas", i.e. presence of condensate, water and other form of sludge in the gas.
There're a lot of...
Gents,
Does anyone have historical knowledge of these systems and the normal cost for refurbishment?
I am looking to find out what's wrong with one of the SCMs' we have in our warehouse and I want to know what the average cost of a "fault finding" exercise on a typical SCM is?
And is it...
Gents thanks for all your comments, really have been useful.
I've put together an inspection program now which will be rolled out through the fleet.
Mechanical Operations Engineer
Oil, Gas & Power
Thanks ever so much guys, I am also looking at trying to see which NDE Techniques I can use for inspecting these gasket, the funny thing is that the corrosion we're experiencing is aggressive on the outter side of the ring.
Nevertheless, very useful info and thanks very much gents. Now to go...
Fzob,
I was thinking of putting together a program to inspect our existing gaskets. This is because we found one of them leaking and they've all been in operation for over 25 years, 26 to be exact!
But with the information I've been researching and reading seems like disturbing a gasket is not...
to add to the above:
material : Steel
Pressure: 6-30 barg
fluid: oil & gas fluids (condensate, gas etc), mineral oil, MEG, seawater etc
external condition: sea atmosphere and sea water (i.e. salty)
running condition: some cycling, some not depending on use.
Mechanical & Operations Engineer...
Gents,
Morning, I am currently looking into inspecting / examining a few of our gaskets in oil and gas environment.
Does anyone know of best practice techniques for the inspection of gaskets?
All I can really think of is visual inspection technique but this will mean inspection thousands due...
we've put cameras in the well and we know the salt is fully soluble in water.
I wasn't here from the start of the issue but from what I've gathered nothing's changed but for the build up gradaully sits towards the lower end of the well.
The only thing i know that's changed really is the...
