Don't worry. There's so much heat, we little humans could never affect any significant change /s

EDIT But seriously. I remember years ago going to a residential GT workshop encouraging private heat sink wells hosted by some boomer reformed hippies. When I asked if there were any studies on the effect of subsurface heat exchange on things like ground water temperatures or different subsurface materials one of the presenters waved it off saying it was probably fine and the other honestly admitted that they didn't know, and that that should probably give us pause before encouraging 200 homes in a square mile all sink wells.