Mahmoodpour, Saeed ; Singh, Mrityunjay ; Bär, Kristian ; Sass, Ingo (2022):
Impact of Well Placement in the Fractured Geothermal Reservoirs Based on Available Discrete Fractured System. (Publisher's Version)
In: Geosciences, 12 (1), MDPI, ISSN 2076-3263,
DOI: 10.26083/tuprints-00020806,
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Item Type: | Article |
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Origin: | Secondary publication via sponsored Golden Open Access |
Status: | Publisher's Version |
Title: | Impact of Well Placement in the Fractured Geothermal Reservoirs Based on Available Discrete Fractured System |
Language: | English |
Abstract: | Well placement in a given geological setting for a fractured geothermal reservoir is necessary for enhanced geothermal operations. High computational cost associated with the framework of fully coupled thermo-hydraulic-mechanical (THM) processes in a fractured reservoir simulation makes the well positioning a missing point in developing a field-scale investigation. To enhance the knowledge of well placement for different working fluids, we present the importance of this topic by examining different injection-production well (doublet) positions in a given fracture network using coupled THM numerical simulations. Results of this study are examined through the thermal breakthrough time, mass flux, and the energy extraction potential to assess the impact of well position in a twodimensional reservoir framework. Almost ten times the difference between the final amount of heat extraction is observed for different well positions but with the same well spacing and geological characteristics. Furthermore, the stress field is a strong function of well position that is important concerning the possibility of high-stress development. The objective of this work is to exemplify the importance of fracture connectivity and density near the wellbores, and from the simulated cases, it is sufficient to understand this for both the working fluids. Based on the result, the production well position search in the future will be reduced to the high-density fracture area, and it will make the optimization process according to the THM mechanism computationally efficient and economical. |
Journal or Publication Title: | Geosciences |
Volume of the journal: | 12 |
Issue Number: | 1 |
Place of Publication: | Darmstadt |
Publisher: | MDPI |
Collation: | 18 Seiten |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
Divisions: | 11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology |
Date Deposited: | 04 Apr 2022 12:24 |
Last Modified: | 22 Aug 2022 12:25 |
DOI: | 10.26083/tuprints-00020806 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-208062 |
Additional Information: | Keywords: well placement; CO2-EGS; water-EGS; discrete fracture networks; THM modeling |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/20806 |
PPN: | 492685398 |
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