EGS Power Generation and Hydraulic Stimulation

Induced seismicity related to four energy development technologies that involve fluid injection or withdrawal: geothermal energy, conventional oil and gas development including enhanced oil recovery (EOR), shale gas recovery, and carbon capture and storage (CCS) is reviewed by literature investigation. The largest induced seismic events reported in the technical literature are associated with projects that did not balance the large volume of fluids injected into, or extracted from the underground reservoir. A statistical observation shows that the net volume of fluid injected and/or extracted may serve as a proxy for changes in subsurface stress conditions and pore pressure, and other factors. Energy technology projects that are designed to maintain a balance between the amount of fluid being injected and the amount of fluid being withdrawn, such as geothermal and most oil and gas development, may produce fewer induced seismic events than technologies that do not maintain fluid balance, such as long-term wastewater disposal wells and CCS projects.

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Case Study on Groß Schönebeck EGS Project Research in Germany

Min¹,

Park²,

Zimmermann³

2015

Journal of Korean Society For Rock Mechanics

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This paper presents a case study of an enhanced geothermal system(EGS) demonstration project conducted in Groß Schönebeck, Northerm Germany, focusing on hydraulic stimulation. The project was conducted with doublet system in sandstone and volcanic formations at 4 -4.4 km depth. Under normal faulting to strike-slip faulting stress regime, hydraulic stimulations were conducted at injection and production wells by massive waterfrac and gel-proppant fracturing. Injectivity index increased from 0.

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EGS Power Generation and Hydraulic Stimulation

Cited by 3 publications

References 11 publications

Experimental study on the mechanical properties of granite after circulating liquid nitrogen subjected to real time high temperature

Experimental study on the mechanical properties of granite after circulating liquid nitrogen subjected to real time high temperature

Case Study on Induced Seismicity during the Injection of Fluid Related to Energy Development Technologies

Case Study on Groß Schönebeck EGS Project Research in Germany

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