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Fig. 14 | Geothermal Energy

Fig. 14

From: Coda wave interferometry during the heating of deep geothermal reservoir rocks

Fig. 14

Comparison of laboratory CWI measurements during the first cycle (red line) with the simulated CWI measurements obtained without (blue line) and with (black line) introduction of a dependency with temperature of the bulk modulus K and of the Young’s modulus E. Relative time delays ε are calculated from the stretching technique. A linear regression is fitted to the measurements. The slope of the linear regression fitted to the simulated CWI results is s1 = − 0.13·10−4 without introduction of the temperature dependency and it is – 4.1·10−4 when the dependency is added to the simulation

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