Mechanical behavior and constitutive model of shale under real-time high temperature and high stress conditions
文献类型：期刊论文
| 作者 | Guo, Wuhao1,2; Guo, Yintong1; Cai, Zhenhua3; Yang, Hanzhi4; Wang, Lei1; Yang, Chunhe1,4; Zhao, Guokai4; Bi, Zhenhui1,2 |
| 刊名 | JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
 |
| 出版日期 | 2022-11-11 |
| 卷号 | -期号:-页码:- |
| ISSN号 | 2190-0558 |
| 关键词 | Deep shale High temperature and high pressure Rock mechanics Hoek-Brown criterion Strength model Constitutive model |
| 英文摘要 | The high temperature and high in-situ stress geological environment can significantly affect the mechanical properties, failure modes, and deformation characteristics of deep shale reservoirs. In this study, real-time high temperature triaxial compressive tests simulating the deep shale formation environment (temperature: 25-150 degrees C, confining pressure: 0-100 MPa) are carried out. The GSI-strength degradation and constitutive models are derived based on the Hoek-Brown criterion. The results show that in low confining pressure conditions, the mechanical behavior of shale is greatly influenced by temperature. Compared with shale at 25 degrees C, the compressive strength of shale at 150 degrees C decreases by up to 13.7%, and the elastic modulus decreases by up to 36.9%. The peak strain was increased by a factor of up to 1.4, and the yield stress level was advanced by as much as 7.4%. However, in high confining pressure conditions, the shale plasticity characteristics are significantly enhanced and the failure mode is relatively single. The GSI-strength degradation model can well characterize the variation law of shale strength with confining pressure under high temperature conditions. The statistical damage constitutive model matches the actual stress-strain curve very well, and it can fully reflect the deformation and failure characteristics of deep shale. The findings of this study can help us better understand the variation of mechanical properties of deep shale. |
| 学科主题 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000881887800002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35413]  |
| 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.University of Chinese Academy of Sciences, Beijing 100049, China 3.CNPC Ofshore Engineering Company Limited, Beijing 100176, China 4.State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China |
| 推荐引用方式 GB/T 7714 | Guo, Wuhao,Guo, Yintong,Cai, Zhenhua,et al. Mechanical behavior and constitutive model of shale under real-time high temperature and high stress conditions[J]. JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,2022,-(-):-. |
| APA | Guo, Wuhao.,Guo, Yintong.,Cai, Zhenhua.,Yang, Hanzhi.,Wang, Lei.,...&Bi, Zhenhui.(2022).Mechanical behavior and constitutive model of shale under real-time high temperature and high stress conditions.JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,-(-),-. |
| MLA | Guo, Wuhao,et al."Mechanical behavior and constitutive model of shale under real-time high temperature and high stress conditions".JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY -.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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