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Figure 7 | Geothermal Energy

Figure 7

From: Local stress anomaly in the Bavarian Molasse Basin

Figure 7

Mean difference between the modeled and observed stress orientations (Δθ) for varied minimal horizontal stresses. θmin from DITF and DENF as well as θmax from BO are compared to the modeled directions (θmaxmodel, θminmodel) in (a). a normal faulting (SH = 0.9 Sv) and (b). a strike-slip stress regime (SH = 1.25 Sv) for a variable Sh magnitude. The value of Δθ is calculated to evaluate the consistency of the model (see Chapter 4.3). The Sh/Sv ratio's independence of the stress distribution results in constant Δθ values and low standard deviations. In the normal faulting regime (a)., the Δθ values for Th1, Th2, and Th3 are particularly constant for different Sh/Sv ratios. Such constant Δθ values are also seen in the strike-slip regime (b). for Th2 and Th3. The data of Th1 in b.) illustrate a change for increasing Sh/Sv ratios, but the standard deviation is even lower than 6°. These results show that the Sh/Sv ratio does not have a significant impact in stress distribution in the well. So, further analyses will be based on fixed Sh/Sv ratios with modified SH magnitude and SH orientation.

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