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低渗透均质油层超低界面张力体系驱替毛管数的研究
引用本文:陈涛平,刘金山,刘继军.低渗透均质油层超低界面张力体系驱替毛管数的研究[J].西安石油大学学报(自然科学版),2007,22(5):33-36.
作者姓名:陈涛平  刘金山  刘继军
作者单位:大庆石油学院,提高油气采收率教育部重点实验室,黑龙江,大庆,163318
基金项目:国家重点基础研究发展计划(973计划)
摘    要:针对经典毛管数理论在低渗透油层超低界面张力体系驱替中应用的局限性,在考虑低渗透油层水驱油渗流速度、超低界面张力对油水相对渗透率影响的条件下,给出了毛管数的修正公式;依据均质低渗透岩心超低界面张力体系驱油实验数据绘制了化学驱采收率与毛管数的关系曲线,提出了超低界面张力体系驱替条件下应用毛管数的注意事项,指出了用超低界面张力体系提高水驱低渗透油层采收率的合理途径.

关 键 词:毛管数  低渗透油层  超低界面张力体系驱油  提高采收率
文章编号:1673-064X(2007)05-0033-04
修稿时间:2007-02-08

Study on the capillary number of the ultra-low interfacial tension displacement system in low-permeability homogeneous reservoirs
CHEN Tao-ping,LIU Jin-shan,LIU Ji-jun.Study on the capillary number of the ultra-low interfacial tension displacement system in low-permeability homogeneous reservoirs[J].Journal of Xian Shiyou University,2007,22(5):33-36.
Authors:CHEN Tao-ping  LIU Jin-shan  LIU Ji-jun
Abstract:There are limitations in the application of classic capillary number theory to the ultra-low interfacial intension displacement system in low-permeability reservoirs,and therefore the modified formula of the capillary number is presented.In it the flow velocity of water displacing oil in low-permeability reservoirs and the effects of ultra-low interfacial intension on oil/water relative permeability are considered.The recovery factor-capillary number relation curves are plotted according to the experimental data of the ultra-low interfacial intension displacement system in homogeneous low-permeability cores.The attentions in the application of capillary number to the ultra-low interfacial tension displacement system are presented,and the reasonable ways to enhancing the recovery factor of the ultra-low interfacial intension displacement system in the low-permeability reservoirs are suggested.
Keywords:capillary number  low-permeability reservoir  ultra-low interfacial intension displacement system  EOR
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