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Simulation of Deep Geothermal Heat Production

E. Holzbecher, P. Oberdorfer, F. Maier, and Y. Jin
Georg-August Universität Göttingen
Göttingen, Germany

Geothermal heat production from deep reservoirs (5000-7000 m) is currently examined, not only in Germany. Our reference set-up consists of two pipes within a single borehole: one for pumping.

We examine a design, where a single borehole splits into two legs at a certain depth. The two legs are connected by highly permeable geological, natural or artificial strata in the deep subsurface. The borehole and the legs are represented by 1D model domains, the fracture is modeled in 2D and the surrounding bedrock in 3D. The model concerns fluid flow and heat transport. We present first results from sensitivity analysis will also be presented.