Wells and geothermal

We decided to put in geothermal heating/cooling, which requires a source of ground temperature water to pump through a geothermal heat pump and return to the ground. In rocky NE, this normally requires a very deep well to pump from and back in to, so the water temperature can equilibrate before it is pumped back in. At any rate, we had our well drilled and by 150 feet they hit 50-80 gallons per minute of water, so much they had to stop drilling to avoid a flood! This is good, but today they had to drill a second well, and fortunately also hit plenty of water at 130' so they can pump out of one well and back into the other, an optimal geothermal arrangement. Shown below is the large drilling rig. If you don't quite get the geothermal concepts above, don't worry, it took Jack many hours of study.