Modeling and petrophysical properties of digital rock models with various pore structure types: An improved workflow

作     者：Xiaobin Li Wei Wei Yuxuan Xia Lei Wang Jianchao Cai Xiaobin Li;Wei Wei;Yuxuan Xia;Lei Wang;Jianchao Cai

作者机构：Key Laboratory of Tectonics and Petroleum ResourcesMinistryof EducationChina University of GeosciencesWuhan 430074China School of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074China State Key Laboratory of Petroleum Resources and ProspectingChina University of PetroleumBeijing102249China 

出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)

年 卷 期：2023年第10卷第5期

页      面：38-56页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(42004086,42172159) the Shale Gas Evaluation and Exploitation Key Laboratory of Sichuan Province(YSK2023007) 

主　　题：Hybrid modeling Pore structure Petrophysical properties Microscopic mechanism 

摘      要：Pore structure is a crucial factor affecting the physical properties of porous materials,and understanding the mechanisms and laws of these effects is of great significance in the fields of geosciences and petroleum ***,it remains a challenge to accurately understand and quantify the relationship between pore structures and effective *** paper improves a workflow to focus on investigating the effect of pore structure on physical ***,a hybrid modeling approach combining process-based and morphology-based methods is proposed to reconstruct 3D models with diverse pore structure ***,the characteristics and differences in pore structure in these models are ***,the varia-tion laws and pore-scale mechanisms of the influence of pore structure on physical properties(permeability and elasticity)are discussed based on the reconstructed *** relationship models between pore structure parameters and perme-ability/elastic parameters in the grain packing model are *** effect of pore structure evolution on permeability/elasticity and the microscopic mechanism in three types of morphology-based reconstruction models are *** influence degree of pore structure on elastic parameters(bulk modulus,shear modulus,P-wave velocity,and S-wave veloc-ity)is quantified,reaching 29.54%,51.40%,18.94%,and 23.18%,*** work forms a workflow for exploring the relationship between pore structures and petrophysical properties at the microscopic scale,providing more ideas and references for understanding the complex physical properties in porous media.