Drag Reducing Agents for Natural Gas Pipelines
Drag Reducing Agents for Natural Gas Pipelines
(OP)
I need some help to find references (companies) that can provide a DRA (Drag Reducing Agent) on Natural Gas Pipelines (on single phase). I have surfed through the web but the info has not been very useful.
Any feedback is well received
Any feedback is well received





RE: Drag Reducing Agents for Natural Gas Pipelines
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Drag Reducing Agents for Natural Gas Pipelines
David
RE: Drag Reducing Agents for Natural Gas Pipelines
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Drag Reducing Agents for Natural Gas Pipelines
I've read (probably on OGJ's Technology section) that, on dense phase -pressures above the cricondenbar- natgas transfer, pipes are coated with an epoxy film to reduce friction.
RE: Drag Reducing Agents for Natural Gas Pipelines
In gases, the DRA will tend to evantually coalesce and run on the bottom of the pipe. Then the gas will do work to make waves in the surface and the net result is the total pressure drop per unit length can increase substantially.
It is the same with corrosion chemicals, they really don't disperse properly in a gas stream (you can treat piggable lines successfully with paired-pig batches, but not with continious injection) so injecting an aersol is worse than worthless. I suppose you could batch a DRA into a line, but I'm not sure how long it would last.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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