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Geothermal Energy

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Fig. 10 | Geothermal Energy

Fig. 10

From: Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep geothermal well

Fig. 10

Pore pressure overview of the Geretsried GEN-1 well. a Pore pressure gradient estimate. TVD, true vertical depth; EMW, equivalent mud weight; PPvsp, pore pressure from vertical seismic profile (dark blue dotted line); C19, pore pressure from best fit 3D basin model (dark blue dashed line); Hyd, hydrostatic/normal pressure (dashed light-blue line); MW, drilling mud weight (brown line); Kicks/Influx, pore pressure estimates from influxes (red dots); PPBSB, water pore pressure gradient (dotted light-blue line) tied to the kick pressure in the Baustein Beds at 3285 m; σv, vertical stress (black line). b Total gas readings while drilling on a logarithmic scale in percent (red line and red dots) and casing points (black triangles). c Simplified lithological column. d Interval velocities from vertical seismic profile (blue line) and normal compaction trend to estimate pore pressure (black dashed line)

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