Fig. 4From: Evaluation of NaCl and MgCl2 heat exchange fluids in a deep binary geothermal system in a sedimentary halite formationA cross-section at the wells of a Hydraulic head and b temperature in a geothermal doublet system with a pumping rate of 3000 m3 d−1 in the cross-section after 10,950 days (30 years). The fracture density is 1 m−1 and fracture aperture is 0.3 mmBack to article page