北京大学学报（自然科学版）2026，Vol.62Issue(5)：1035-1045,中插3-中插9,18.DOI:10.13209/j.0479-8023.2026.036
基于多级离心核磁共振实验的可动流体赋存特征及控制因素研究
Characteristics and Controlling Factors of Movable Fluid Occurrence Based on Multistage Centrifugal Nuclear Magnetic Resonance Experiments
摘要
Abstract
To overcome the limitations of using a single T2 cutoff value for characterizing fluid occurrence and mobility in reservoirs,a method based on multistage centrifugal nuclear magnetic resonance(NMR)experiments is proposed to determine multiple T2 cutoff values.This method is used to identify fluid types and their distribution characteristics.Combined with constant-rate mercury intrusion porosimetry and X-ray diffraction(XRD)analysis,the pore structure and mineral composition of the reservoir are determined,and the occurrence characteristics and controlling factors of movable fluids in the multiscale pore spaces of unconventional reservoirs are investigated.The results indicate that the division method with multiple T2 cutoff values further subdivides the types and occurrence spaces of movable fluids.The mobility evaluation can better reflect the development characteristics of micron-nano pore throats and the mineral composition within the reservoir,and shows stronger adaptability to shale and tight sandstone reservoirs,which have more subtle pore structures and more complex mineral compositions.The occurrence characteristics of movable fluids are jointly controlled by three main factors:reservoir physical properties,mineral composition,and the uniformity of pore-throat distribution.关键词
页岩储层/致密储层/核磁共振(NMR)/可动性评价/孔隙结构/赋存特征Key words
shale reservoir/tight sandstone reservoir,nuclear magnetic resonance(NMR)/movability evaluation/pore structure/occurrence characteristics引用本文复制引用
王哲麟,吕心瑞,鲁锴,邬兴威,郭艳军..基于多级离心核磁共振实验的可动流体赋存特征及控制因素研究[J].北京大学学报（自然科学版）,2026,62(5):1035-1045,中插3-中插9,18.基金项目
中国石化重点实验室专项(KLP25027)和中国石化科技攻关项目(P24219)资助 （KLP25027）
