I've been wondering this as well. Everything I've read online says it's not at all likely given how much energy we would be pulling out. However, I've also seen statements that earth produces 47 terrawatts of energy (unclear if this is annually or not) and we currently consume 16 terrawatts of energy every year (34% of earth's production). So it doesn't seem like a strange question to ask, what happens if we start sucking terrawatt hours worth of heat energy from the earth and dissipating it into the climate and space? We're currently pulling multiple terrawatt hours worth of energy via fossil fuels and it doesn't seem to be without major consequences
https://en.wikipedia.org/wiki/Earth%27s_energy_budget?useski...