[FairWitness]

"It has to do with the frequency, and it has to do with the vacuum," Pringle said. "That's where our patents are."

Frequency I understand, and vacuum in a laboratory is no problem, but how do you pull a vacuum (how much of a vacuum?) in an underground area the size of an oil well ?

[JRandomFreeper]

how do you pull a vacuum

With a vaccuum pump. A big one. That sucks, and is supposed to. The RF Noise sucks louder.

/johnny

[brityank]

Frequency I understand, and vacuum in a laboratory is no problem, but how do you pull a vacuum (how much of a vacuum?) in an underground area the size of an oil well ?

I suspect the vacuum would be for the magnetron or klystron tube, or whatever they're using down the hole to create the microwaves. The hole won't need a vacuum any more than your household microwave does, but the equipment to create them seemingly does. I think the down-hole pressure will be the problem.