石油实验地质2026，Vol.48Issue(1)：50-60,11.DOI:10.11781/sysydz2026010050
高过成熟页岩储层孔隙水实验技术与赋存规律研究进展及启示
Research progress and implications of experimental techniques and occurrence patterns of pore water in high-to over-mature shale reservoirs
摘要
Abstract
The distribution and occurrence characteristics of pore water have a significant impact on shale gas occurrence and enrichment,but the understanding of pore water in existing research is insufficient,which limits the research on shale gas enrichment mechanisms and exploration deployment.This study systematically reviews the current research progress on experimental testing techniques and occurrence patterns of pore water in shale reservoirs,and proposes key research directions for the future based on exploration practices.The study shows that:① the evaluation of water saturation in shale reservoirs mainly relies on logging calculation methods and experimental testing methods.The characterization of microscopic occurrence state and mobility of pore water is mainly conducted using nuclear magnetic resonance(NMR)experiments and molecular simulation techniques.② The occurrence states of pore water in shale reservoirs could be divided into structural water,interlayer water,bound water(water film bound water and capillary bound water),and free water.③Pore water in shale reservoirs is preferentially distributed in hydrophilic pores.The distribution of pore water in organic/inorganic pores is affected by various factors such as medium interface wettability,rock mineral composition,and pore structure.④ High-to over-mature shale is usually characterized by ultra-low water saturation.However,due to graphitiza-tion and structural adjustment,shale with high water content can also be formed.In the future,it is necessary to optimize the evaluation methods for shale water saturation under insitu conditions,develop automated experimental technology and equipment,improve analytical efficiency,and promote the standardization of experimental proce-dures.Additionally,it is recommended to strengthen research on the occurrence states under in-situ conditions and the multi-scale distribution characteristics of shale pore water,deepen the understanding of the genetic mechanisms of high water content in high-to over-mature shale,reconstruct the differential evolution pathways of pore water occurrence,and develop a shale gas geological evaluation parameter system that considers pore water.This can provide a theoretical basis for the exploration deployment and development decision-making of deep and ultra-deep shale gas.关键词
高过成熟页岩/孔隙水/实验技术/赋存规律/四川盆地Key words
high-to over-mature shale/pore water/experimental techniques/occurrence patterns/Sichuan Basin分类
能源科技引用本文复制引用
申宝剑,王鹏威,魏祥峰,万成祥,李楚雄,李倩文..高过成熟页岩储层孔隙水实验技术与赋存规律研究进展及启示[J].石油实验地质,2026,48(1):50-60,11.基金项目
国家自然科学基金联合基金石油化工重大专项"四川盆地及周缘二叠系页岩气差异富集机理与分布规律"(U25D9024)资助. （U25D9024）
