Pore-scale investigation of two-dimensional water-oil displacement in fractured porous media
文献类型：期刊论文
| 作者 | Wu, Mingyang2,5; Song, Zhenlong3; Zhu, Zhengwen2,4; Shi, Di1,2; Xia, Debin2; Li, Qianying3 |
| 刊名 | EUROPEAN PHYSICAL JOURNAL PLUS
 |
| 出版日期 | 2024-07-14 |
| 卷号 | 139期号:7页码:18 |
| ISSN号 | 2190-5444 |
| DOI | 10.1140/epjp/s13360-024-05426-2 |
| 英文摘要 | The pore and branching fracture structures in both naturally and artificially fractured reservoirs significantly affect the water-oil displacement mechanisms. Therefore, understanding these mechanisms in such porous media is crucial for the development of low-permeability reservoirs. Considering that there are both single and bifurcated factures in these media, 12 geometric models for porous media with pure pores, a single-fracture, and a Y-shaped bifurcated fracture (YFPM) were constructed. A phase-field method was adopted to simulate the water-oil displacement in these three types of media. Furthermore, the effects of fracture bifurcation angle, fracture width, fracture length, and water injection rate on the water-oil displacement in the YFPM were further investigated. The results are as follows. (1) The displacement in the three types of media includes both viscous and capillary fingering. The breakthrough time and displacement efficiency in the YFPM are the smallest among the three media types. Furthermore, compared to the porous media with pure pores, the breakthrough times in the porous media with a single fracture and YFPM are reduced by approximately 33% and 50%, respectively. (2) The breakthrough time in the YFPM is inversely proportional to both the increment in fracture length and water injection rate, whereas it exhibits remarkable stability with increases in the fracture width. (3) In the YFPM, the displacement efficiency shows a rising trend as the fracture width and length decrease, while it positively correlates with an elevation in the water injection rate. (4) The effect of the bifurcation angle on breakthrough time and displacement efficiency in the YFPM is notably directed by the water injection direction, and the water saturation in porous media with a 15 degrees bifurcation angle attains a water saturation level approximately 6.76% greater than that in porous media with a 45 degrees bifurcation angle. (5) When the water injection rate changes from low (0.1 mm/s and 1 mm/s) to high (5 mm/s and 10 mm/s), the displacement in the YFPM changes from a combination of capillary and viscous fingering to viscous fingering, and the difference in water saturation can reach nearly 71%. This study will help to understand the oil-water displacement law during the exploitation of fractured reservoirs, and guide fracturing transformations and oil and gas extraction. |
| 资助项目 | National Natural Science Foundation of China[JCYJ20210324104804013] ; Shenzhen Science and Technology Program[42004036] ; National Natural Science Foundation of China |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001267843800001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41946]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Song, Zhenlong; Zhu, Zhengwen |
| 作者单位 | 1.Liaoning Tech Univ, Sch Mech & Engn, Fuxin 123000, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China 4.Wuhan Univ, State Key Lab Water Resources Engn & Management, Wuhan 430072, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Mingyang,Song, Zhenlong,Zhu, Zhengwen,et al. Pore-scale investigation of two-dimensional water-oil displacement in fractured porous media[J]. EUROPEAN PHYSICAL JOURNAL PLUS,2024,139(7):18. |
| APA | Wu, Mingyang,Song, Zhenlong,Zhu, Zhengwen,Shi, Di,Xia, Debin,&Li, Qianying.(2024).Pore-scale investigation of two-dimensional water-oil displacement in fractured porous media.EUROPEAN PHYSICAL JOURNAL PLUS,139(7),18. |
| MLA | Wu, Mingyang,et al."Pore-scale investigation of two-dimensional water-oil displacement in fractured porous media".EUROPEAN PHYSICAL JOURNAL PLUS 139.7(2024):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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