超前注水机理综述  

Advanced-water-flooding Mechanism Summary

作　　者：马铭勖[1] 秦垦[1] 姚晨昊[1] 刘泽华[1] 

机构地区：[1]中国石油大学石油工程学院,北京102249

出　　处：《内蒙古石油化工》2011年第9期45-46,共2页Inner Mongolia Petrochemical Industry

摘　　要：超前注水已经成为低渗透油藏开发的一种重要办法。超前注水在采油井投产前注水,提高地层初始压力,避免了压力降低过快造成的油藏渗透率下降,启动压力梯度增大和原油粘度增大,超前注水使压力梯度的升高,加快了渗流速度。另外,超前注水也能有效地防止指进现象,降低油井产量递减率,最终提高了油藏的采收率。Advanced-water-flooding has become an important method for developing low permeability reservoirs.Advanced-water-flooding is to inject water into water wells before oil wells product oil.This will increase formation pressure,avoid permeability decreasing,threshold pressure gradient and viscosity increasing.Besides,advanced-water-flooding will raise pressure gradient and make fluids flow faster.What's more,it will avoid Fingering and improve oil recovery.

关 键 词：低渗透油藏 超前注水 压力升高 提高采收率 

分 类 号：TE372[石油与天然气工程—油气田开发工程]