| Mechanisms of permeability alteration during water invasion in unconsolidated sandstone gas reservoirs | |
Yang, Dongsheng; Xie, Kun; Lu, Xiangguo; Hu, Yong; Chen, Fenjun; Jiao, Chunyan; Jia, Na; Shen WJ(沈伟军)
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| Corresponding Author | Lu, Xiangguo(Luxiangg2003@aliyun.com) ; Jia, Na(Na.Jia@uregina.ca) |
| Source Publication | PHYSICS OF FLUIDS
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| 2025-04-01 | |
| Volume | 37Issue:4Pages:13 |
| ISSN | 1070-6631 |
| Abstract | Water invasion in unconsolidated sandstone gas reservoirs affects sand and gas production. With changes in displacement pressure difference, sand production and gas permeability variation characteristics in different unconsolidated sandstones also change, primarily influenced by three factors: clay mineral content, cementation strength, and pore throat size. The classification of unconsolidated sandstone is determined by analyzing gas permeability variation and sand production during water flooding, identifying three types: type I-permeability increases after sand production, type II-permeability decreases after sand production, and type III-permeability decreases without sand production. Type I formations have low clay mineral content (<30 wt. %), high cementation strength, and large pore throats, which promote sand production. After sand production, fluid seepage conditions improve, resulting in increased gas permeability. Although Type II formations have high cementation strength and large pore throats, their high clay mineral content (>35 wt. %); and strong water-rock interaction with formation water leads to the rapid generation of sand particles, which block pore throats and reduce gas permeability. The clay mineral content of type III formations is low (<30 wt. %), but their cementation strength is weak, or their original pore throats are small. Weak cementation strength leads to stress-induced pore compaction after water invasion, reducing gas permeability. Additionally, small pore throats hinder sand particle migration, further decreasing gas permeability. Based on this study, unconsolidated sandstone formations can be further classified, and targeted sand prevention and control strategies are proposed to enhance the efficient development of water-rich unconsolidated sandstone gas reservoirs. |
| DOI | 10.1063/5.0264535 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001458959300005 |
| WOS Keyword | SAND PRODUCTION ; 2-PHASE FLOW ; COAL ; GEOMECHANICS |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China10.13039/501100001809[12172362] ; National Natural Science Foundation of China[202408230146] ; China Scholarship Council ; Faculty of Engineering and Applied Science at the University of Regina, Canada |
| Funding Organization | National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; China Scholarship Council ; Faculty of Engineering and Applied Science at the University of Regina, Canada |
| Classification | 一类/力学重要期刊 |
| Ranking | 3+ |
| Contributor | Lu, Xiangguo ; Jia, Na |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/100805 |
| Collection | 流固耦合系统力学重点实验室 |
| Recommended Citation GB/T 7714 | Yang, Dongsheng,Xie, Kun,Lu, Xiangguo,et al. Mechanisms of permeability alteration during water invasion in unconsolidated sandstone gas reservoirs[J]. PHYSICS OF FLUIDS,2025,37,4,:13. |
| APA | Yang, Dongsheng.,Xie, Kun.,Lu, Xiangguo.,Hu, Yong.,Chen, Fenjun.,...&沈伟军.(2025).Mechanisms of permeability alteration during water invasion in unconsolidated sandstone gas reservoirs.PHYSICS OF FLUIDS,37(4),13. |
| MLA | Yang, Dongsheng,et al."Mechanisms of permeability alteration during water invasion in unconsolidated sandstone gas reservoirs".PHYSICS OF FLUIDS 37.4(2025):13. |
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