摘要
聚焦低渗—特低渗油藏中原油-岩石界面处的离子水合桥作用,总结其研究方法、形成机理、作用强度及破坏机制,讨论离子水合桥对原油赋存状态和可动性的影响机制,在此基础上,分析现阶段离子水合桥研究存在的关键挑战,指出未来发展方向。当前该领域研究通常采用实验表征技术与分子模拟方法开展;离子水合桥形成涉及的微观作用力主要包括静电作用、氢键、范德华作用等,其中原油极性分子与水合离子之间的氢键是破坏离子水合桥作用的主要位点;离子水合桥作用强度受离子种类和浓度、储层溶液环境、油藏岩石矿物类型、原油中极性组分的共同调控,进而影响原油赋存状态和可动性。离子水合桥相关研究在研究方法、尺度贯通及地质复杂性3个方面存在系统性挑战,离子水合桥的动态演化机制尚未明晰、时空跨尺度建模预测存在衔接断层、实际地质环境的复现性不足。未来研究可从以下3方面寻求突破:发展原位动态实验表征与机器学习辅助的模拟策略、建立跨尺度模型融合和升尺度预测框架、开展复杂矿物-多物理场耦合作用下的离子水合桥研究。
This study focuses on the hydrated ion bridge(HIB)effect at the oil-rock interface in low-to ultra-low-permeability oil reservoirs.It systematically summarizes the research methodologies,formation mechanisms,interaction strength,and disruption mechanisms of HIB,and discusses the influencing mechanisms of HIB on the occurrence state and mobility of crude oil.On this basis,the key challenges inherent in the current HIB research are analyzed,and prospective directions for future development are proposed.Currently,research in this field primarily relies on experimental characterization techniques and molecular simulation methods.The microscopic interactions involved in HIB formation mainly include electrostatic interactions,hydrogen bonds and van der Waals forces.Notably,the hydrogen bonds between polar molecules in crude oil and hydrated ions serve as the primary sites for disrupting the HIB effect.The interaction strength of HIB is collectively modulated by ion type and concentration,reservoir solution environment,mineral type of reservoir rocks,and polar components in crude oil,which subsequently influence the occurrence state and mobility of crude oil.Systematic challenges persist in HIB-related research across three dimensions:research methodologies,scale integration and geological complexity.Specifically,the dynamic evolution mechanism of HIB remains inadequately elucidated;a discontinuity exists in the connection of spatiotemporal cross-scale modeling and prediction;and the reproducibility of actual geological environments in experimental settings is insufficient.Future research may pursue breakthroughs in the following three aspects:(1)developing in-situ dynamic experimental characterization techniques and machine learning-augmented simulation strategies;(2)establishing a framework for cross-scale model fusion and upscaling prediction;and(3)conducting in-depth studies on HIB under the coupled effects of complex mineral systems and multi-physical fields.
作者
金旭
崔风路
吴一宁
王晓琦
孟思炜
张辰君
刘晓丹
陶嘉平
沈蔓
王奉超
JIN Xu;CUI Fenglu;WU Yining;WANG Xiaoqi;MENG Siwei;ZHANG Chenjun;LIU Xiaodan;TAO Jiaping;SHEN Man;WANG Fengchao(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;National Key Laboratory for Enhanced Oil and Gas Recovery,Beijing 100083,China;State Key Laboratory of Continental Shale Oil,Daqing 163453,China;Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China;Petroleum Industry Press,Beijing 100011,China)
出处
《石油勘探与开发》
北大核心
2025年第5期1145-1153,共9页
Petroleum Exploration and Development
基金
国家重点研发计划(2019YFA0708700)
国家自然科学基金(52542310)。
关键词
低渗—特低渗油藏
离子水合桥
形成机理
作用强度
破坏机制
驱油效率
流固界面
low and ultra-low permeability reservoirs
hydrated ion bridge
formation mechanism
interaction strength
disruption mechanism
oil displacement efficiency
fluid-solid interface
