致密储层水驱前缘特征数值模拟研究  

Numerical simulation of water flooding leading edge characteristics in dense reservoirs

作　　者：王春生[1] 蔡明钰 仪记敏 周明岩 瓮子文 WANG Chun-sheng;CAI Ming-yu;YI Ji-min;ZHOU Ming-yan;WENG Zi-wen(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China;China Petroleum Pipeline Engineering Co.,Ltd.International Business Division,Langfang 065000,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]中国石油管道局工程有限公司国际事业部,河北廊坊065000

出　　处：《化学工程师》2018年第12期15-18,共4页Chemical Engineer

基　　金：国家自然科学基金(21076043)

摘　　要：为明确致密储层中水驱前缘特征及其影响因素,根据渗流力学知识结合达西定律及连续性方程,结合三维数字岩心重构并截取二维轴向岩心切片,实现数值岩心与COMSOL Multiphysics软件进行数值模拟和分析水驱前缘特征。分别从注入速度和含油饱和度方面对影响水驱前缘特征进行分析,结果表明:在孔隙结构一定的情况下,得到水驱注入速度是影响水驱前缘特征的主要因素;水驱速度较小时,水驱前缘形态容易发生均匀驱替现象,但其驱油时间较长;水驱速度较大时,水驱前缘形态极易发生指进现象且残余油较多;水驱速度达到适中速度时,水驱前缘形态刚好达到活塞式驱替与指进驱替现象的临界状态,认为该状态下的驱替速度驱油效果最好。该研究对明确水驱前缘特征及探明影响因素具有积极意义。For clear dense reservoir water drive front characteristics and its influencing factors,according to the seepage mechanics knowledge combined with darcy’s law and continuity equation,combined with 3 d digital cores reconstruction and capture two dimensional axial slice,realizes the value core and COMSOL Multiphysics software to carry on the numerical simulation and analysis of characteristics of water drive front.Respectively from the injection rate and oil saturation of water drive front characteristics were analyzed,and the results show that in certain cases,the pore structure for water flooding injection rate are the main factors influencing the water drive front characteristics;The water drive speed is small,the water drive front shape is easy to occur even displacement phenomenon,but its oil drive time is long.When the water drive speed is large,the shape of water drive front edge is easy to be fingered and there are many oil residues.When the water drive speed reaches a moderate speed,the shape of water drive front edge just reaches the critical state of piston displacement and finger displacement phenomenon.This study is of positive significance in defining the characteristics of water drive leading edge and identifying the influencing factors.

关 键 词：致密储层 水驱前缘 数字岩心 数值模拟 

分 类 号：TE341[石油与天然气工程—油气田开发工程]