Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021WR030891 |
Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections | |
A. L. Herring; C. Sun; R. T. Armstrong; Z. Li; J. E. McClure; M. Saadatfar | |
2021-11-05 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Geologic sequestration in sedimentary formations has been identified as a potential technology to prevent climate-change inducing carbon dioxide (CO2) from being emitted to the atmosphere. To achieve safe and effective storage underground, accurate understanding and predictions of supercritical CO2 (scCO2) behavior in subsurface rock formations is required; including quantifying how much scCO2 is trapped within pore spaces by capillarity (vs. how much remains mobile), and constraining the occurrence of physio-chemical reactions between scCO2 and the mineral matrix. Experiments where multiple cycles of scCO2 and brine are injected into rock samples have produced conflicting results regarding the consistency of trapping as cycles progress; likely due to differences in mineral content, pressure-temperature conditions, aqueous chemistry parameters, and experimental set-ups. We present a new set of experiments, replicating the conditions of a previous study, but with a new experimental design, apparatus, and timeline. We confirm previous results that demonstrated shifts in injection pressure and scCO2 trapping behaviour over multiple injection cycles, and we conduct additional analyses to discern the fluid-fluid macroscopic contact angle, interface mean and gaussian curvatures, scCO2 interfacial area, and topology of trapped scCO2 ganglia. We also performed lattice-Botzmann simulations approximating experimental conditions where solid wettability was systematically altered over multiple injections cycles; trends in scCO2 ganglia characteristics compare well between experiment and simulation. The results indicate that this system undergoes a transition to a “patchy” mixed-wet state, and we observe that this wettability alteration renders scCO2 more stable in the rock pore space, increasing capillary trapping over four injection cycles. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/341113 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | A. L. Herring,C. Sun,R. T. Armstrong,et al. Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections[J]. Water Resources Research,2021. |
APA | A. L. Herring,C. Sun,R. T. Armstrong,Z. Li,J. E. McClure,&M. Saadatfar.(2021).Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections.Water Resources Research. |
MLA | A. L. Herring,et al."Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections".Water Resources Research (2021). |
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