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Fig. 4 | Geothermal Energy

Fig. 4

From: Temperature log simulations in high-enthalpy boreholes

Fig. 4

The HM plots (lines) using BHT measurements (markers) at a early shut-in time (ts = 12, 18 and 24 h) and b long-term shut-in (ts = 2, 3, and 4 days) for each of the four different heat transfer coefficients (h) considered. c Comparison of the results of SFT estimation with the true SFT value: the black bars are the four SFT estimates using early shut-in time BHT data; the dark grey bars represent the four SFT estimates using long-term shut-in BHT data; the solid line stands for the referencing value which is the true SFT (257 °C)

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