Conduction-Dominated Geothermal Systems

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Conduction-Dominated Geothermal Systems

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Conduction-Dominated Geothermal Systems:
The transportation of geothermal heat is dominated by conduction.
Other definitions:Wikipedia Reegle


Conduction dominated geothermal systems are considered ‘passive’ because no convective flow of fluids or short-term variations in fluid dynamics exist. No recent tectonism exists in these areas thus depending on an increase of temperature with depth. Economic viability is closely linked to the geothermal gradient. Since no active tectonics exists, heat sources are located at greater depth than in convection dominated systems. [1]

Conduction dominated systems are subdivided into three play types based on the natural porosity-permeability ratio within the potential reservoir rock, and the absence or presence of producible natural reservoir fluid.[1] These three plays are intracratonic basin plays, orogenic belt and foreland basin plays, and crystalline rock/basement plays. Some areas, such as those with low permeability potential reservoirs can only be developed using engineered geothermal systems (EGS).



Examples

Want to add an example to this list? Select a Geothermal Resource Area to edit its "Moeck-Beardsmore Play Type" property using the "Edit with Form" button.

CSV
Geothermal
Resource
Area
Geothermal
Region
Play Type Control
Structure
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Birdsville Geothermal Area Australia - Great Artesian Basin CD-1: Intracratonic Basin Sandstone 0.8 MW800 kW
800,000 W
800,000,000 mW
8.0e-4 GW
8.0e-7 TW
371.15 K98 °C
208.4 °F
668.07 °R
Fenton Hill HDR Geothermal Area Rio Grande Rift CD-3: Crystalline Rock - Basement Lithologically Controlled Precambrian Crystalline basement “pCu” (undifferentiated in map units); Biotite Granodiorite (Phase I Reservoir); Gneiss, Schist, Granodiorite, Granite, Metavolcanic Rocks (Phase II Reservoir) 20 MW20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
508.15 K235 °C
455 °F
914.67 °R
Garching Geothermal Area Germany Geothermal Region CD-2: Orogenic Belt 2 MW2,000 kW
2,000,000 W
2,000,000,000 mW
0.002 GW
2.0e-6 TW
Innamincka SA South Austrailia CD-3: Crystalline Rock - Basement 1 MW1,000 kW
1,000,000 W
1,000,000,000 mW
1.0e-3 GW
1.0e-6 TW
551.15 K278 °C
532.4 °F
992.07 °R
Neustadt-Glewe Geothermal Area North German Basin CD-1: Intracratonic Basin 343.15 K70 °C
158 °F
617.67 °R
Unterhaching Geothermal Area Molasse Basin - Foreland basin of the alps CD-2: Orogenic Belt Jurrasic Limestone 395.15 K122 °C
251.6 °F
711.27 °R



References

  1. 1.0 1.1 1.2 Inga S. Moeck,Graeme Beardsmore. 2014. A New 'Geothermal Play Type' Catalog: Streamlining Exploration Decision Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 2014/02/24; Stanford, California. Stanford, California: Stanford University; p. 8
  2. Inga Moeck. 2013. Geothermal Plays in Geologic Settings. In: IGA Workshop on Developing Best Practice for Geothermal Exploration and Resource/Reserve Classification; 2013/11/14; Essen, Germany. IGA website: International Geothermal Association; p. 19