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Stochastic performance assessment on long-term behavior of multilateral closed deep geothermal systems

Esmaeilpour, Morteza ORCID iD icon 1; Gholami Korzani, Maziar; Kohl, Thomas 1
1 Institut für Angewandte Geowissenschaften (AGW), Karlsruher Institut für Technologie (KIT)


Increasing the contribution of geothermal systems to green energy generation requires designing new innovative systems producing a significant amount of thermal power in a sustainable manner. The focus of this study is the performance evaluation of multilateral closed deep geothermal (MCDG) systems as a novel environmentally friendly approach for energy extraction from earth. The investigations on these synthetic systems assume a probabilistic number of borehole sections with several vertical and horizontal wellbores connected through some manifolds and doglegs. To reduce possible thermal losses, the circulated fluid is extracted through only one production wellbore. The findings of this study demonstrated that the heat absorption per meter of MCDG systems is much higher than for simple closed geothermal systems (CDG). Operating with these systems will not necessarily yield better performance. It is also found that the long-term performance of MCDG systems can be predicted as a function of their short-term behavior through stochastic analysis. This correlation is interestingly independent of the number of wellbores and flow rate. By defining specific criteria, the high-performance MCDG systems can be filtered to demonstrate common features as a specific relation between flow rates per vertical and horizontal wellbores. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000157381
Veröffentlicht am 17.04.2023
DOI: 10.1016/j.renene.2023.03.074
Zitationen: 2
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2023
Sprache Englisch
Identifikator ISSN: 0960-1481, 1879-0682
KITopen-ID: 1000157381
HGF-Programm 38.04.04 (POF IV, LK 01) Geoenergy
Erschienen in Renewable Energy
Verlag Elsevier
Band 208
Seiten 26–35
Nachgewiesen in Scopus
Web of Science
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