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Characterization and classification of pore structures in deeply buried carbonate rocks based on mono- and multifractal methods

文献类型：期刊论文

作者Duan, Ruiqi1,2,3; Xu, Zhifang2,3,4; Dong, Yanhui1,2,3; Liu, Wenjing3,4
刊名JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
出版日期2021-08-01
卷号203页码:20
关键词Monofractal Multifractal PSD characterization Pore structure classification Deeply buried carbonate Tarim basin
ISSN号0920-4105
DOI10.1016/j.petrol.2021.108606
英文摘要The heterogeneity of deeply buried carbonates (burial depth >4500 m) is directly related to the morphology of the micropores and connectivity of the pore network. It is important to know the fractal characteristics of the microstructure to understand the heterogeneity and fluid flow properties. In this study, N2 gas adsorption measurements, mercury intrusion porosimetry, and nuclear magnetic resonance were conducted. Based on the pore size distribution (PSD), we compared the mono- and multifractal characteristics and established the relationship between the fractal parameters and petrophysical properties (porosity, permeability, median capillary pressure, and the cutoff value of transversal relaxation time (T2cutoff)). Finally, two multifractal parameters were introduced to characterize the pore structure. A cross-plot of D0 (capacity dimension) vs f0 (fractal spectrum) was established for the pore structure classification with predefined parameters such as the porosity and permeability. The results show that the PSD can be obtained by integrating the three above-mentioned measurement methods. The mono fractal dimensions are weakly correlated with the petrophysical parameters, whereas D0 obtained from multifractal analysis correlates with the porosity, permeability, median capillary pressure, and T2cutoff. The unique multifractal characteristics of D0 and f0 can be used as indicators of pore structure types in case studies. This study introduces an effective method that can be used for the pore structure characterization and classification of carbonates.
WOS关键词TARIM BASIN ; FRACTAL CHARACTERISTICS ; SIZE DISTRIBUTION ; TAZHONG UPLIFT ; RESERVOIRS ; ORDOVICIAN ; NMR ; SANDSTONE ; GEOMETRY ; AREA
资助项目National Major Science and Technology Projects of China[2017ZX05008003021]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000656537300001
出版者ELSEVIER
资助机构National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China ; National Major Science and Technology Projects of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/102047]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Zhifang
作者单位1.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Duan, Ruiqi,Xu, Zhifang,Dong, Yanhui,et al. Characterization and classification of pore structures in deeply buried carbonate rocks based on mono- and multifractal methods[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2021,203:20.
APA Duan, Ruiqi,Xu, Zhifang,Dong, Yanhui,&Liu, Wenjing.(2021).Characterization and classification of pore structures in deeply buried carbonate rocks based on mono- and multifractal methods.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,203,20.
MLA Duan, Ruiqi,et al."Characterization and classification of pore structures in deeply buried carbonate rocks based on mono- and multifractal methods".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 203(2021):20.

入库方式： OAI收割

来源：地质与地球物理研究所

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