| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Hefny, Mahmoud | - |
| dc.contributor.author | Qin, Chao Zhong | - |
| dc.contributor.author | Saar, Martin O. | - |
| dc.contributor.author | Ebigbo, Anozie | - |
| dc.date.accessioned | 2022-09-12T07:29:37Z | - |
| dc.date.available | 2022-09-12T07:29:37Z | - |
| dc.date.issued | 2020-12-01 | - |
| dc.identifier.issn | 1750-5836 | - |
| dc.description.abstract | Depleted oil fields in the Gulf of Suez (Egypt) can serve as geothermal reservoirs for power generation using a CO₂-Plume Geothermal (CPG) system, while geologically sequestering CO₂. This entails the injection of a substantial amount of CO₂ into the highly permeable brine-saturated Nubian Sandstone. Numerical models of two-phase flow processes are indispensable for predicting the CO₂-plume migration at a representative geological scale. Such models require reliable constitutive relationships, including relative permeability and capillary pressure curves. In this study, quasi-static pore-network modelling has been used to simulate the equilibrium positions of fluid–fluid interfaces, and thus determine the capillary pressure and relative permeability curves. Three-dimensional images with a voxel size of 0.65 μm3 of a Nubian Sandstone rock sample have been obtained using Synchrotron Radiation X-ray Tomographic Microscopy. From the images, topological properties of pores/throats were constructed. Using a pore-network model, we performed a sequential primary drainage, main imbibition cycle of quasi-static invasion in order to quantify (1) the CO₂ and brine relative permeability curves, (2) the effect of initial wetting-phase saturation (i.e. the saturation at the point of reversal from drainage to imbibition) on the residual-trapping potential, and (3) study the relative permeability-saturation hysteresis. The results improve our understanding of the potential magnitude of capillary trapping in Nubian Sandstone, essential for future field-scale simulations. | - |
| dc.description.sponsorship | Hydromechanik | - |
| dc.language.iso | eng | - |
| dc.relation.ispartof | International Journal of Greenhouse Gas Control | - |
| dc.subject | Carbon capture and storage | - |
| dc.subject | CO₂-plume geothermal | - |
| dc.subject | Nubian Sandstone (Egypt) | - |
| dc.subject | Pore-network modelling | - |
| dc.subject | Residual trapping | - |
| dc.subject | Physics - Geophysics | - |
| dc.title | Synchrotron-based pore-network modeling of two-phase flow in Nubian Sandstone and implications for capillary trapping of carbon dioxide | - |
| dc.type | Article | - |
| dc.identifier.doi | 10.1016/j.ijggc.2020.103164 | - |
| dc.identifier.scopus | 2-s2.0-85092443322 | - |
| dcterms.bibliographicCitation.volume | 30 | - |
| dc.identifier.url | http://arxiv.org/abs/2004.06792v1 | - |
| local.submission.type | only-metadata | - |
| dc.type.article | Scientific Article | - |
| hsu.peerReviewed | ✅ | - |
| item.grantfulltext | none | - |
| item.openairetype | Article | - |
| item.fulltext_s | No Fulltext | - |
| item.languageiso639-1 | en | - |
| item.fulltext | No Fulltext | - |
| crisitem.author.dept | Hydromechanik | - |
| crisitem.author.orcid | 0000-0003-3972-3786 | - |
| crisitem.author.parentorg | Fakultät für Maschinenbau und Bauingenieurwesen | - |
| Appears in Collections: | 3 - Publication references (without fulltext) | |
CORE Recommender
User Tools
Items in openHSU are protected by copyright, with all rights reserved, unless otherwise indicated.