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Using Nanoindentation to Characterize the Mechanical and Creep Properties of Shale: Load and Loading Strain Rate Effects

文献类型：期刊论文

作者Wang, Jianfeng1,2; Yang, Chao5; Liu, Yuke3; Li, Yun1,4; Xiong, Yongqiang1,4
刊名ACS OMEGA
出版日期2022-04-26
卷号7期号:16页码:14317-14331
ISSN号2470-1343
DOI10.1021/acsomega.2c01190
通讯作者Yang, Chao(yangchao@ms.giec.ac.cn)
英文摘要The mechanical and creep properties of shale strongly influence artificial hydraulic fracturing, wellbore stability, and the evaluation of reservoir performance in shale gas exploration. This study characterized these mechanical and creep properties at the microscale through nanoindentation tests and evaluated their dependence on the indentation test parameters, specifically, the indentation load and the loading strain rate. The mechanical parameters (the Young's modulus and hardness) of shale were strongly influenced by the magnitude of an indentation load (2-400 mN). Both parameters decreased sharply as the load increased from 2 to 200 mN; they then remained relatively stable at loads of 200-400 mN, suggesting that large indentation loads (200-400 mN) can be used to detect the mechanical responses of bulk shale. In contrast, both parameters increased slightly as the loading strain rate increased from 0.005 to 0.1 s(-1). The indentation creep (C-IT), related to creep behavior, and the creep strain rate sensitivity (m), related to the creep mechanism of shale, both increased with increasing the indentation load, whereas they decreased with increasing the loading strain rate. This demonstrates that increasing the load or decreasing the loading strain rate can increase creep deformation in shale during nanoindentation creep testing. The values of m varied from 0.040 to 0.124 under different loading conditions, suggesting that dislocation power-law creep may be the main mechanism controlling creep in shale. This study standardizes the testing parameters for the characterization of the mechanical properties of shale by nanoindentation testing and also advances our understanding of the deformation mechanisms of shale at the microscale.
WOS关键词INDENTATION SIZE ; LONGMAXI FORMATION ; RATE SENSITIVITY ; ELASTIC-MODULUS ; BEHAVIOR ; DEFORMATION ; HARDNESS ; PRESSURE ; ALUMINUM ; STRESS
资助项目Special Fund for Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010102] ; National Natural Science Foundation of China[41802165] ; National Natural Science Foundation of China[42002158] ; Natural Science Foundation of Guangdong Province[2018A030313234] ; State Key Laboratory of Organic Geochemistry, GIGCAS[SKLOG202012]
WOS研究方向Chemistry
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000812721300001
资助机构Special Fund for Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; State Key Laboratory of Organic Geochemistry, GIGCAS
源URL[http://ir.giec.ac.cn/handle/344007/36834]  
专题中国科学院广州能源研究所
通讯作者Yang, Chao
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
5.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Nat Gas Hydrate, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jianfeng,Yang, Chao,Liu, Yuke,et al. Using Nanoindentation to Characterize the Mechanical and Creep Properties of Shale: Load and Loading Strain Rate Effects[J]. ACS OMEGA,2022,7(16):14317-14331.
APA Wang, Jianfeng,Yang, Chao,Liu, Yuke,Li, Yun,&Xiong, Yongqiang.(2022).Using Nanoindentation to Characterize the Mechanical and Creep Properties of Shale: Load and Loading Strain Rate Effects.ACS OMEGA,7(16),14317-14331.
MLA Wang, Jianfeng,et al."Using Nanoindentation to Characterize the Mechanical and Creep Properties of Shale: Load and Loading Strain Rate Effects".ACS OMEGA 7.16(2022):14317-14331.

入库方式： OAI收割

来源：广州能源研究所

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