A modelling study to evaluate the effect of impure CO2 on reservoir performance in a sandstone saline aquifer

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dc.contributor.authorAminu, Mohammed Dahiru
dc.contributor.authorManovic, Vasilije
dc.date.accessioned2020-08-27T15:33:12Z
dc.date.available2020-08-27T15:33:12Z
dc.date.issued2020-08-03
dc.description.abstractCarbon capture and storage (CCS) is expected to play a key role in meeting greenhouse gas emissions reduction targets. In the UK Southern North Sea, the Bunter Sandstone formation (BSF) has been identified as a potential reservoir which can store very large amounts of CO2. The formation has fairly good porosity and permeability and is sealed with both effective caprock and base rock, making CO2 storage feasible at industrial scale. However, when CO2 is captured, it typically contains impurities, which may shift the boundaries of the CO2 phase diagram, implying that higher costs will be needed for storage operations. In this study, we modelled the effect of CO2 and impurities (NO2, SO2, H2S) on the reservoir performance of the BSF. The injection of CO2 at constant rate and pressure using a single horizontal well injection strategy was simulated for up to 30 years, as well as an additional 30 years of monitoring. The results suggest that impurities in the CO2 stream affect injectivity differently, but the effects are usually encountered during early stages of injection into the BSF and may not necessarily affect cumulative injection over an extended period. It was also found that porosity of the storage site is the most important factor controlling the limits on injection. The simulations also suggest that CO2 remains secured within the reservoir for 30 years after injection is completed, indicating that no post-injection leakage is anticipated.en_UK
dc.identifier.citationAminu MD, Manovic V. (2020) A modelling study to evaluate the effect of impure CO2 on reservoir performance in a sandstone saline aquifer. Heliyon, Volume 6, Issue 8, Article number e04597en_UK
dc.identifier.issn2405-8440
dc.identifier.issnhttps://doi.org/10.1016/j.heliyon.2020.e04597
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15727
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectChemical engineeringen_UK
dc.subjectPetroleum engineeringen_UK
dc.subjectEnergy sustainabilityen_UK
dc.subjectGeomechanicsen_UK
dc.subjectGeotechnical engineeringen_UK
dc.subjectBasin analysisen_UK
dc.subjectReservoir engineeringen_UK
dc.subjectCarbon capture and storageen_UK
dc.subjectSaline aquiferen_UK
dc.subjectImpurities in CO2en_UK
dc.subjectReservoir performanceen_UK
dc.subjectStorage capacityen_UK
dc.subjectModelling and simulationen_UK
dc.titleA modelling study to evaluate the effect of impure CO2 on reservoir performance in a sandstone saline aquiferen_UK
dc.typeArticleen_UK

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