Reinjection of greenhouse gases into geothermal reservoirs

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Show simple item record Kaya, Eylem en Zarrouk, Sadiq en 2018-10-15T21:13:25Z en 2017-12 en
dc.identifier.issn 1750-5836 en
dc.identifier.uri en
dc.description.abstract This work addresses the feasibility of reinjecting H 2 S and CO 2 , captured and dissolved in effluents from the geothermal field, back into the geothermal reservoir. A series of numerical modelling scenarios was used to assess the effect of NCG (non-condensable gases) reinjection on energy recovery, understand permanent trapping, and forecast potential NCG breakthrough into production wells. Although the gas species from geothermal systems typically have moderate solubility in water, formation of gas phases at lower pressures and/or the shallow subsurface requires careful consideration of the injection rate and composition of NCG. Possible fluid paths and distribution of gas components were investigated to estimate the NCG storage capability of a reservoir, and evaluate the potential risk of the reinjected NCG growing into fingers that may lead to an early breakthrough or potential leakage to the ground surface. Modified versions of benchmark geothermal reinjection models were constructed with initial conditions of a liquid-dominated geothermal system. The results obtained show that the effects of injection depend on the reinjection and production wells arrangement and the recharge conditions. The risk of leakage to the surface is very limited since the injected NCG remain in the liquid phase. en
dc.publisher Elsevier en
dc.relation.ispartofseries International Journal of Greenhouse Gas Control en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri en
dc.title Reinjection of greenhouse gases into geothermal reservoirs en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.ijggc.2017.10.015 en
pubs.begin-page 111 en
pubs.volume 67 en
dc.rights.holder Copyright: The author en
pubs.end-page 129 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 712342 en Engineering en Engineering Science en
pubs.record-created-at-source-date 2017-11-14 en

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