油气地质与采收率2025，Vol.32Issue(2)：51-59,9.DOI:10.13673/j.pgre.202501028
页岩油微尺度流动油-固界面黏附作用机制
Mechanism of oil-solid interface adhesion in micro-scale flow within shale oil reservoirs
摘要
Abstract
This study focused on the mud shale reservoirs in the second Member of Funing Formation in Qintong Sag,Subei Basin of China,and systematically investigated the oil-solid interface adhesion mechanism of shale oil in micro-scale flow.Through de-tailed analysis of the mineral compositions,pore structures,and fluid characteristics of shale,the flow patterns of shale oil and the oil-solid interface adhesion mechanism in different types of shale were revealed by atomic force microscopy(AFM)and laser confo-cal microscopy.The findings indicate that shale oil in the reservoir exhibits distinct characteristics of selective production driven by pressure,whereby light components are preferentially adsorbed onto the shale walls,significantly enhancing the adhesion at the oil-solid interface.As pressure increases,heavy components start to flow,further augmenting the adhesion,but they stabilize once pressures exceed 5 MPa.Adhesion tests at the oil-solid interface demonstrate that laminated mudstone and massive silty mudstone emerge as key target shale types for enhancing shale oil recovery under low-pressure conditions.Under high-pressure conditions,the mechanism of adsorption and desorption of shale oil by laminated mudstone becomes the key research area for improving shale oil recovery in the second Member of Funing Formation in Qintong Sag.关键词
页岩油/微尺度流动/油-固界面/黏附作用/溱潼凹陷Key words
shale oil/micro-scale flow/oil-solid interface/adhesion/Qintong Sag分类
石油、天然气工程引用本文复制引用
刘晓宇,黄振凯,昝灵,姜志高,牛骏,伦增珉..页岩油微尺度流动油-固界面黏附作用机制[J].油气地质与采收率,2025,32(2):51-59,9.基金项目
国家自然科学基金项目"陆相泥页岩层系成岩热演化过程中有机无机相互作用及其对储集空间形成演化的影响"(42272142)、"陆相富有机质页岩成烃动态演化与烃类赋存机理"(42090022),中国石化科技部项目"页岩油开发实验关键技术研究与应用"(P24159). （42272142）
