低张力体系改善低渗透油藏水驱渗流特征实验  

Experiment of low-tension system for improving percolation behaviors in waterflooding low-permeability reservoirs

作　　者：赖南君[1] 叶仲斌[2] 陈洪[2] 罗平亚[2] 

机构地区：[1]西南石油大学研究生院,四川成都610500 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《石油与天然气地质》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)

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.

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 

分 类 号：TE112.2[石油与天然气工程—油气勘探]