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Journal Article

Hydraulische Stimulationskonzepte zur Entwicklung von Enhanced Geothermal Systems (EGS)

Authors
/persons/resource/zimm

Zimmermann,  G.
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/bloech

Blöcher,  G.
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/reini

Reinicke,  Andreas
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
3.2 Geomechanics and Rheology, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/fdeon

Deon,  Fiorenza
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/regens

Regenspurg,  Simona
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/jsyoon

Yoon,  J.-S.
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/zang

Zang,  Arno
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/heidbach

Heidbach,  O.
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/moeck

Moeck,  Inga
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/huenges

Huenges,  Ernst
Vol. 4, Issue 1 (2014), GFZ Journal 2014, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

External Ressource
Fulltext (public)

GFZ_syserde.04.01.04.pdf
(Publisher version), 768KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Zimmermann, G., Blöcher, G., Reinicke, A., Deon, F., Regenspurg, S., Yoon, J.-S., Zang, A., Heidbach, O., Moeck, I., Huenges, E. (2014): Hydraulische Stimulationskonzepte zur Entwicklung von Enhanced Geothermal Systems (EGS). - System Erde, 4, 1, 30-35.
https://doi.org/10.2312/GFZ.syserde.04.01.4


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_423908
Abstract
The scientific principles of reservoir engineering are a decisive key for an appropriate development of geothermal resources. Conventional geothermal resources cover a wide range of uses for power production and direct application. For unconventional systems a large scientific and industrial community has been involved in developing so-called Enhanced Geothermal Systems (EGS). The concept involves different ways to increase access to heat at depth by improving exploration methods, drilling and reservoir assessment technologies for deep geothermal resources, and ultimately the stimulation of low-permeability reservoirs. These stimulation treatments are a well established and well understood method with long experience in the oil and gas industry. They should be designed individually depending on the reservoir rock properties, stratigraphic sequences, and structural geological setting to achieve the best results in terms of developing an appropriate down hole heat exchanger and a strategy to reduce the risk of undesired seismic events. Designing a special concept of the well path, including sub horizontal sections in the reservoir and special alignment according to the stress field, offers the possibility for multiple fracture treatments in a well to develop the geothermal field. In case of generating mostly tensile fractures with minor shear displacement, sustainability of fracture opening can be assured by adding proppants (meshed sand or man-made ceramics). A cyclic injection design in combination with the multi-frac concept tends to produce less seismic events with significant lower total seismic energy release if compared to a constant flow rate and a single fracture treatment.