standing column well

First, determine the required flow, (approx. 3 GPM/ton), and desired
type of antifreeze -- then choose the piping to yield a satisfactorily
low friction loss and high Reynolds number.

WF Pressure Drop Calculation Instructions

Also run the numbers for a pair of smaller diameter U-tubes in
parallel (in the same bore). Depending on GPM requirements,
that might allow you to get away with a lower-wattage circ pump.

 

200 PSI pipe = 466 feet down. Is this something to be worried about?

 

No danger of bursting a water-filled pipe if it's in a standing column
of water or water-saturated soil.

I don't know whether there are (realistic) situations where crushing
might be a concern.