一种研究多孔介质中水气分散体系运移机制的仿真模拟新方法  

A new simulation method to study transport mechanism ofwater-gas dispersion system in porous media

作　　者：王富琼 王秀宇 单学军[2] 温志远 陈秀林 杨胜来 WANG Fuqiong;WANG Xiuyu;SHAN Xuejun;WEN Zhiyuan;CHEN Xiulin;YANG Shenglai(State Key Laboratory of Petroleum Resources and Exploration,China University of Petroleum(Beijing),Beijing City,102249,China;SINOPEC International Petroleum Exploration and Production Corporation,Beijing City,100029,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石化集团国际石油勘探开发公司,北京100029

出　　处：《油气地质与采收率》2023年第5期130-138,共9页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金项目“超深层碎屑岩油气藏渗流物理基础研究”(51774300)。

摘　　要：水气分散体系可有效改变地层油渗流通道,抑制驱替流体的窜流,扩大水气分散体系在油层中的波及体积,提高剩余油的动用效果。由于难以直接观察多孔介质中水气分散体系的流动,因此对于水气分散体系在多孔介质中的运移机理研究较少。笔者提出一种研究水气分散体系在多孔介质中运移的仿真模拟新方法,基于水平集方法和气液两相流,使用多物理场耦合数值计算软件COMSOL Multiphysics进行研究。对水气分散体系在孔喉中的贾敏效应、聚并和卡断机理进行了仿真研究,探讨了水气分散体系运移过程中孔喉压力的影响因素,分析分散相气泡聚并过程的形态变化,研究水气分散体系在孔喉中发生卡断现象的动态特征,结果表明数值模拟可以直观的体现水气分散体系在多孔介质中的运移机制。The water-gas dispersion system can effectively change flow channels of formation oil,inhibit the channeling of displacement fluid,expand the swept volume of the water-gas dispersion system in reservoirs,and enhance the producing effect of the remaining oil.Since it is difficult to directly observe the flow of the water-gas dispersion system in porous media,there are few studies on the transport mechanism of the water-gas dispersion system in porous media.The author proposes a new simulation method to study the transport of the water-gas dispersion system in porous media.The level set method and the gas-liquid two-phase flow are adopted,and the coupled numerical calculation software COMSOL Multiphysics is employed for research.The mechanisms of the Jamin effect,coalescence,and division of the water-gas dispersion system in the pore throat are simulated and studied.The influencing factors of dynamic pressures during the transport of the water-gas dispersion system are discussed,and the morphological changes of the dispersed-phase bubble during the coalescence process are analyzed.The dynamic characteristics of the water-gas dispersion system during division in the pore throat are studied.The result shows that numerical simulation can intuitively reflect the transport mechanism of the water-gas dispersion system in the porous media.

关 键 词：水气分散体系 水平集方法 气液两相流 多孔介质 运移机制 

分 类 号：TE341[石油与天然气工程—油气田开发工程]