Inferring Hydraulic Pressure Changes from Induced Seismicity Observations: Three Showcases from Geothermal Reservoirs

Figure 14

(a) Analytical solution [25] for pressure resulting from injection into an infinite fault with homogeneous properties. Parameters were selected to approximate the initial 2003 stimulation. Homogeneous fault transmissibility of  Dm and a constant injection rate of 25 l/s are assumed. The spatial pressure distribution is shown after 11.5 days. Red squares denote the distance of the 9 reference points and the associated pressure level which is assumed to equal the level P₀(r) at which further seismicity can occur. (b) Same as Figure 13 while absolute overpressure is reconstructed by adding the initial pressure to .