大庆石油地质与开发2026，Vol.45Issue(4)：11-19,9.DOI:10.19597/J.ISSN.1000-3754.202412021
古龙页岩油储层应力敏感性及其影响因素
Stress sensitivity of Gulong shale oil reservoir and its influencing factors
摘要
Abstract
Shale oil reservoirs are characterized by high clay mineral mass fraction,nano-pores development and small rock grains,and porosity and permeability are more sensitive to stress.In order to further study stress sensitiv-ity of shale oil reservoirs with different lithologies and its influencing factors,experiment is carried out to study stress sensitivity of shale oil reservoirs in Qingshankou Formation of Songliao Basin.Stress sensitivity of shale reser-voir is determined by overburden porosity and permeability experiments.Coupling relationships of mineral composi-tion,pore structure and grain size with porosity damage rate are determined by X-ray diffraction,low-temperature nitrogen adsorption and rock grain size analysis.The results show that stress sensitivity of Gulong shale varies with different lithologies,and stress sensitivity of permeability is much higher than that of porosity.Stress sensitivity is closely related to pore size,grain size,mass fraction of clay mineral and organic content.The larger the pore size is,the smaller the grain size is,the higher the mass fraction of clay mineral is,the higher the organic content is,the higher the porosity damage rate is and the higher the stress sensitivity is.The research contributes to optimize ex-perimental scheme of shale oil reservoir sensitivity evaluation and guide economic development of shale oil,being of great significance for shale oil reserves submission and accumulation mechanism research.关键词
应力敏感性/古龙页岩/孔隙结构/颗粒大小/黏土矿物含量Key words
stress sensitivity/Gulong shale/pore structure/grain size/clay mineral content分类
能源科技引用本文复制引用
王海勇,王文涛,陈凤祥,张景远,潘哲君,冯子辉,李建智,姜海月,裴昌蓉,陈思琪,陈健奇,赵新文..古龙页岩油储层应力敏感性及其影响因素[J].大庆石油地质与开发,2026,45(4):11-19,9.基金项目
黑龙江省自然科学基金联合基金重点项目"地层高温高压下页岩原位储集性参数测定与表征方法"(ZL2024D004) （ZL2024D004）
黑龙江省"揭榜挂帅"科技攻关项目"古龙页岩油油藏工程理论、CO2提产机理及合理排采制度研究"(DQYT2022-JS-758) （DQYT2022-JS-758）
中国石油青年科技专项"不同类型页岩地层原位高温超压环境孔隙度评价模型及变化机理研究"(2024DQ03009). （2024DQ03009）
