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Modeling the Viscoelastic Behavior of Quartz and Clay Minerals in Shale by Nanoindentation Creep Tests

文献类型：期刊论文

作者Wang, Jianfeng1,2,3; Liu, Yuke4; Yang, Chao2,5; Jiang, Wenmin2,3; Li, Yun2,3; Xiong, Yongqiang2,3
刊名GEOFLUIDS
出版日期2022-01-13
卷号2022页码:16
ISSN号1468-8115
DOI10.1155/2022/2860077
通讯作者Liu, Yuke(liuyuke@petrochina.com.cn) ; Jiang, Wenmin(jiangwm@gig.ac.cn)
英文摘要The viscoelastic behavior of minerals in shales is important in predicting the macroscale creep behavior of heterogeneous bulk shale. In this study, in situ indentation measurements of two major constitutive minerals (i.e., quartz and clay) in Longmaxi Formation shale from the Sichuan Basin, South China, were conducted using a nanoindentation technique and high-resolution optical microscope. Firstly, quartz and clay minerals were identified under an optical microscope based on their morphology, surface features, reflection characteristics, particle shapes, and indentation responses. Three viscoelastic models (i.e., three-element Voigt, Burger's, and two-dashpot Kelvin models) were then used to fit the creep data for both minerals. Finally, the effects of peak load on the viscoelastic behavior of quartz and clay minerals were investigated. Our results show that the sizes of the residual imprints on clay minerals were larger than that of quartz for a specific peak load. Moreover, the initial creep rates and depths in clay minerals were higher than those in quartz. However, the creep rates of quartz and clay minerals displayed similar trends, which were independent of peak load. In addition, all three viscoelastic models produced good fits to the experimental data. However, due to the poor fit in the initial holding stage of the three-element Voigt model and instability of the two-dashpot Kelvin model, Burger's model is best in obtaining the regression parameters. The regression results indicate that the viscoelastic parameters obtained by these models are associated with peak load, and that a relatively small peak load is more reliable for the determination of viscoelastic parameters. Furthermore, the regression values for the viscoelastic parameters of clay minerals were lower than those of quartz and the bulk shale, suggesting the former facilitates the viscoelastic deformation of shale. Our study provides a better understanding of the nanoscale viscoelastic properties of shale, which can be used to predict the time-dependent deformation of shale.
WOS关键词MECHANICAL-PROPERTIES ; ELASTIC-MODULUS ; INDENTATION ; HARDNESS ; TIME
资助项目Special Fund for the 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Geochemistry & Geophysics ; Geology
语种英语
WOS记录号WOS:000766528300001
出版者WILEY-HINDAWI
资助机构Special Fund for the 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/344007/35924]  
专题中国科学院广州能源研究所
通讯作者Liu, Yuke; Jiang, Wenmin
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
3.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
4.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Nat Gas Hydrate, Guangzhou 510650, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jianfeng,Liu, Yuke,Yang, Chao,et al. Modeling the Viscoelastic Behavior of Quartz and Clay Minerals in Shale by Nanoindentation Creep Tests[J]. GEOFLUIDS,2022,2022:16.
APA Wang, Jianfeng,Liu, Yuke,Yang, Chao,Jiang, Wenmin,Li, Yun,&Xiong, Yongqiang.(2022).Modeling the Viscoelastic Behavior of Quartz and Clay Minerals in Shale by Nanoindentation Creep Tests.GEOFLUIDS,2022,16.
MLA Wang, Jianfeng,et al."Modeling the Viscoelastic Behavior of Quartz and Clay Minerals in Shale by Nanoindentation Creep Tests".GEOFLUIDS 2022(2022):16.

入库方式： OAI收割

来源：广州能源研究所

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