pipeline drying
pipeline drying
(OP)
We have a gas pipeline with internal epoxy coating. If methanol swabbing as a drying technique is used could this potentially damage the internal coating?
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RE: pipeline drying
David
RE: pipeline drying
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http://www.arcorepoxy.com/products/a_coating.htm
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
When I've done those calculations, the economics have always been on the wrong side of marginal (disregrarding corrosion benefits). I've always found that I got at least an order of magnitude better effeciency from pigging than I got from reducing the surface roughness of the pipe. I'd be really interested to hear more about this application.
David
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
David
RE: pipeline drying
I've never used epoxy coating for roughness reduction either. That's why I thought it was for corrosion.
I think its probably more like some entity within or near the project that has an interest in using epoxy. You'd be surprized what that kind of pipeline you can wind up with when there are "other considerations" to meet. Remember the story about the blind man meeting an elephant.
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
David
RE: pipeline drying
Just curious, are you internally coating the joints also? Reason I ask is I am on a project at the moment where the owner has internally coated pipe (epoxy) and is not internal joint coating.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: pipeline drying
Sorry to piecemeal, but we are in the process of hydro testing the onshore portions and will be using methanol slugs. We checked with our vendor and no issues with the epoxy, however, you might want to check the valve vendor to make sure the seals are okay with methanol - outside chance, but worth ticking the box.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: pipeline drying
RE: pipeline drying
I wondered about that. I didn't know of any "drying" properties of methanol, but there are SO many things I don't know that I kept that one to myself.
If by "drying" he meant to remove liquid water, I don't know of anything that will chemically do that. You could pump in anhydrous ammonia and boil it, but that's pretty exciting and the exhausted gas might spoil your day.
David
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: pipeline drying
RE: pipeline drying
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com