RE: Drill Pad23 May 2021 00:34
Its all new to me,
. ...
Some Brain Storming..
The gas in the ground is mainly Nitrogen, sure I read its the carrier gas, so I assume they could be bound, so the seals needs to stop Nitrogen more than helium. So maybe not the same issue as stopping liquid helium, warming, and expanding in a tanker and pushing the gaseous helium out to atmosphere.
found this
"Helium doesn't mix easily with nitrogen because of the great difference in their densities. But once mixed, the gas molecules are close together and they move around quite a bit with kinetic energy so they stay mixed and don't separate out into layers."
And I guess part of the leaky issue is related to the gas warming, expansion and pressure changes, so once the well head is diverting the gas to the plant it is going to take the route of least resistance which is along the pipe and not so much through it walls. And its mainly nitrogen not pure helium..
Just guessing
They can seal hard drives which are probably still compact in size, with a comparatively thin casings so I guess they can seal a big junky well head