石油地质与工程2026，Vol.40Issue(1)：15-23,32,10.DOI:10.26976/j.cnki.sydz.202601003
基于网格纳米压痕实验的陆相页岩力学性质研究
Study on mechanical properties of continental shale based on grid nanoindentation experiments:a case study of the Chang 7 Member of the Yanchang Formation in the Ordos Basin
摘要
Abstract
The mechanical properties of shale matrix minerals are critical to wellbore stability and the propagation pattern of hydraulic fractures.In this study,grid indentation was performed on the continental shale from the Chang 7 Member of the Yanchang Formation in the Ordos Basin.After optimizing the data via deconvolution technology,the elastic modulus and hardness of organic matter,clay minerals,and quartz were measured.Based on the energy analysis method,the fracture toughness of matrix minerals at the nanoscale was estimated.The Mori-Tanaka model was employed as a mechanical parameter model for scaling from the nanoscale to the centimeter scale,with pyrite taken into account in the model calculations.This approach allows for the prediction of a more accurate equivalent elastic modulus,thus providing a reference for characterizing the mechanical parameters of the Yanchang Formation reservoir in the Ordos Basin.关键词
陆相页岩/网格纳米压痕/弹性模量/Mori-Tanaka模型Key words
continental shale/grid nanoindentation/elastic modulus/the Mori-Tanaka model分类
天文与地球科学引用本文复制引用
张天天,李严严..基于网格纳米压痕实验的陆相页岩力学性质研究[J].石油地质与工程,2026,40(1):15-23,32,10.基金项目
国家自然科学基金面上项目"鄂尔多斯盆地陆相页岩储层复杂缝网成生演化机制与可压裂性评价研究"(42077258). （42077258）
