Study on the influence of mechanical characteristics of multi-rhythm inter-salt shale oil on fracture propagation in Qianjiang formation, China
文献类型：期刊论文
| 作者 | Zeng, Yijin2; Guo, Yintong1,3; Zhang, Xu2; Ying, Qiqi1,3; Chang, Xin1,3 |
| 刊名 | JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 13期号:2页码:735 |
| ISSN号 | 2190-0558 |
| 关键词 | Shale oil Interface characteristics Hydraulic fracturing Fracturing fracture Fracturing vertical propagation |
| 英文摘要 | There are many inter-salt rhythmic shale reservoirs in Qianjiang sag, and the mineral composition content with different rhythms is different. The thin interbedding characteristics of inter-salt shale oil reservoirs bring technical challenges to hydraulic fracturing. Taking one shale oil well in Qianjiang depression as an example, the mechanical properties and interface characteristics of rock under temperature and confining pressure are analyzed. The physical simulation test of fracture propagation under different fracturing fluid is completed, and the effects of four different factors on fracture propagation are analyzed by numerical analysis method. The results show that the mechanical characteristic and failure modes with different rhythms are obvious differences. Under uniaxial and triaxial compression, glauberite mudstone and shale have high strength, and salt rock shows obvious plastic deformation characteristics. The interbedded rock has clear interface characteristics. The cohesion of glauberite mudstone and shale bedding surface obtained from direct shear test is 0.60 MPa and 0.99 MPa. The fracture morphology of inter-salt shale is mainly affected by the development degree of rock bedding. The mechanical parameters, in situ stress difference, and the displacement have an important impact on the longitudinal propagation of fracturing fractures. The width and height of fracture propagation decrease, with the increase in the minimum horizontal principal stress in the salt layer, and the width of fracture in shale increases. The crack height decreases with the increase in tensile strength of the interlayer. With the increase in fracturing fluid injection rate from 3.0 to 7.0 ml/min, the propagation height of hydraulic fractures and the width of fractures in shale increase significantly. The research results can apply to understanding the mechanism of hydraulic fracture propagation in inter-salt shale formation. |
| 学科主题 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000853472700001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35136]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efective Development, Sinopec Research Institute of Petroleum Engineering, Beijing 100101, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Zeng, Yijin,Guo, Yintong,Zhang, Xu,et al. Study on the influence of mechanical characteristics of multi-rhythm inter-salt shale oil on fracture propagation in Qianjiang formation, China[J]. JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,2023,13(2):735. |
| APA | Zeng, Yijin,Guo, Yintong,Zhang, Xu,Ying, Qiqi,&Chang, Xin.(2023).Study on the influence of mechanical characteristics of multi-rhythm inter-salt shale oil on fracture propagation in Qianjiang formation, China.JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,13(2),735. |
| MLA | Zeng, Yijin,et al."Study on the influence of mechanical characteristics of multi-rhythm inter-salt shale oil on fracture propagation in Qianjiang formation, China".JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY 13.2(2023):735. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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