Evolution of Stress and Seismicity in Fractured Geothermal Reservoirs

by Martin Schoenball

Institution: Universität Karlsruhe
Year: 2014
Keywords: Geothermal power, induced seismicity, geomechanics, time-dependent behavior
Record ID: 1104603
Full text PDF: http://digbib.ubka.uni-karlsruhe.de/volltexte/documents/3090702


The mitigation and control of induced seismicity has become a major challenge for the future of enhanced geothermal systems (EGS). In this thesis I analyse the stimulation of well GPK2 of the EGS at Soultz-sous-Forêts. I analyze whether interaction of seismicity by static stress transfer plays a role and investigate stress changes from inversion of focal mechanism solutions. Second, the time-dependency of borehole breakout development is studied.