Comments by "David Elliott" (@davidelliott5843) on "The REAL Reason China is Drilling the World's DEEPEST Hole" video.

  1. Geothermal energy needs a large underground contact area usually done by hydraulic “fracking”. A simple hole could never return enough heat to cover its costs. HOWEVER, the deeper you go, the pressures to fracture the rocks get ever higher. AND you have to keep the cracks open - usually with sand. The pressures at 5 miles deep (8000 metres) is beyond any hydraulic systems available today.
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