Publication:
Techno-economic performance optimization of hydrothermal doublet systems: Application to the Al Wajh basin, Western Saudi Arabia

cris.virtual.departmentHydromechanik
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cris.virtual.departmentbrowseHydromechanik
cris.virtual.departmentbrowseHydromechanik
cris.virtualsource.department5eebaccd-371f-40cd-8f12-101831ee8137
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dc.contributor.authorEzekiel, Justin
dc.contributor.authorEbigbo, Anozie
dc.contributor.authorArifianto, Indra
dc.contributor.authorDaniilidis, Alexandros
dc.contributor.authorFinkbeiner, Thomas
dc.contributor.authorMai, P. Martin
dc.date.issued2022-11-01
dc.description.abstractThe Kingdom of Saudi Arabia (KSA) has vast geothermal energy resources. When developed, these markedly strengthen the country's goals of achieving a carbon-neutral economy. To demonstrate the feasibility and techno-economic performance of small-scale, hydrothermal well doublet systems for direct use in KSA, we perform reservoir and wellbore flow and heat-transport simulations as well as an economic analysis. The maximum permissible flowrate is constrained to avoid thermoelastic fracturing in the near-wellbore region. Reservoir conditions of a sedimentary basin along the Red Sea coast (near Al Wajh) provide an ideal study case to which we add economic parameters considered representative for KSA. We derive a Levelized Cost of Heat (LCOH) ranging from 49 to 128 $/MWh for 50-mD hydrothermal doublet systems with an optimal well spacing of 600 m and a flowrate ranging from 110 kg/s to 50 kg/s. LCOH is strongly influenced by decreasing reservoir transmissivity. Also, a minimum injection temperature is required to avoid thermoelastic fracturing. Our economic analysis further highlights that capacity factor and well-drilling cost have the greatest impact on LCOH. Thus, this study provides a guide and workflow to conduct techno-economic investigations for decision-making, risk mitigation, optimizing geothermal-energy-extraction and economic-performance conditions of hydrothermal doublet systems.
dc.description.versionNA
dc.identifier.doi10.1016/j.geothermics.2022.102532
dc.identifier.issn0375-6505
dc.identifier.scopus2-s2.0-85135136494
dc.identifier.urihttps://openhsu.ub.hsu-hh.de/handle/10.24405/14436
dc.language.isoen
dc.relation.journalGeothermics
dc.relation.orgunitHydromechanik
dc.rights.accessRightsmetadata only access
dc.subjectHydrothermal systems
dc.subjectLevelized cost of heating (LCOH)
dc.subjectTechno-economic optimization
dc.subjectThermoelastic fracture
dc.subjectTransmissivity
dc.subjectWestern Saudi Arabia
dc.titleTechno-economic performance optimization of hydrothermal doublet systems: Application to the Al Wajh basin, Western Saudi Arabia
dc.typeResearch article
dspace.entity.typePublication
hsu.peerReviewed
hsu.uniBibliography
oaire.citation.volume105
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