摘要
低渗透油藏注水井吸水能力低,注水压力逐渐升高,注水开发效果差。以国内低渗透注水开发油田(T油田)为例,研制了改善低渗透油藏注水开发效果的低张力体系。室内实验结果表明,低张力体系能够有效地降低残余油饱和度,增加油水两相共渗区间,改善低渗透油藏水驱渗流特征,从而改善低渗透油藏的注水开发效果。
Waterflooding performs poorly in low-permeability reservoirs due to their low absorbing capacity and gradually increasing injection pressure. This paper takes T oilfield, a low-permeability oilfield under waterflood development program,as an example to illustrate the development of a Low-Tension System for improving water- flooding effectiveness in low-permeability reservoirs, Lab experimental result shows that the system can effectively reduce residual oil saturation, increase oiL/water two-phase common seepage intervals, improve percolation behaviors,and thus enhance waterflooding efficiency in low-permeability reservoirs.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2007年第4期520-522,共3页
Oil & Gas Geology
基金
国家重点基础发展研究规划(973)项目(G1999022502)
关键词
低张力体系
注入压力
相对渗透率
渗流特征
低渗透油藏
low-tension system
injection pressure
relative permeability
percolation behavior
low-permeability reservoir
