Experimental and Numerical Investigation on the Interaction between Hydraulic Fractures and Vugs in Fracture-Cavity Carbonate Reservoirs
文献类型：期刊论文
| 作者 | Wang, Lei; Wu, Xiaolong; Hou, Longfei; Guo, Yintong; Bi, Zhenhui; Yang, Hanzhi |
| 刊名 | ENERGIES
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 15期号:20 |
| 关键词 | carbonate reservoir vug hydraulic fracture propagation physical simulation XFEM model |
| 英文摘要 | In karstic-fractured carbonate reservoirs, most of the oil resources are hosted in vugs. Connecting as many vugs as possible by hydraulic fracturing is the key to achieving effective development. However, the interaction mechanism between vugs and hydraulic fractures is complicated and has not been fully revealed. In this study, both experimental and numerical simulations were implemented to investigate the interaction between vugs and hydraulic fractures. Key factors, such as vug size, horizontal stress difference, and the internal pressure of the vug, were considered. The results showed that the vug played an important role in the propagation of hydraulic fractures. Three interaction modes of vugs and hydraulic fractures were observed: crossing, arresting, and bypassing. Owing to the variation of the stress concentration existing around the vug, the hydraulic fracture could be arrested by a small vug but would bypass a vug with a larger size. Whether the hydraulic fracture could communicate with the vug was mainly controlled by the horizontal stress difference. Under large horizontal stress differences (>= 20 MPa), the hydraulic fracture could cross and connect multiple vugs. The difference between the horizontal minimum stress and the internal pressure of the vug was also particularly significant for fracture propagation. The smaller the difference, the easier the fracture communicated with the vug. The above findings would be valuable and constructive for the optimal design of field hydraulic fracturing in karstic-fractured carbonate reservoirs. |
| 学科主题 | Energy & Fuels |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000872428600001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34933]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chongqing University |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Wu, Xiaolong,Hou, Longfei,et al. Experimental and Numerical Investigation on the Interaction between Hydraulic Fractures and Vugs in Fracture-Cavity Carbonate Reservoirs[J]. ENERGIES,2022,15(20). |
| APA | Wang, Lei,Wu, Xiaolong,Hou, Longfei,Guo, Yintong,Bi, Zhenhui,&Yang, Hanzhi.(2022).Experimental and Numerical Investigation on the Interaction between Hydraulic Fractures and Vugs in Fracture-Cavity Carbonate Reservoirs.ENERGIES,15(20). |
| MLA | Wang, Lei,et al."Experimental and Numerical Investigation on the Interaction between Hydraulic Fractures and Vugs in Fracture-Cavity Carbonate Reservoirs".ENERGIES 15.20(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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