摘要
针对纯发泡剂半衰期较短、对已形成注入水窜流通道的高渗透储层封堵效果较差的实际问题．开展了凝胶泡沫体系的研究。该泡沫体系成胶时间在3～10d之间，发泡体积在500mL以上，半衰期在20h以上。该堵剂具有交联时间可控、成胶后强度高、不易破胶及对人造岩心封堵率大的特点，用于注水井调剖时，能达到扩大注入水的波及体积和提高水驱采收率的目的。
Since pure foaming agent with short half-value period causes a poor plugging effect for high-permeability reservoir with water channeling,this paper studies on gel foam sysem.Gelling time of the gel-foam system ranges from 3 to 10d,foaming volume is above 500ml and half-value period is over 20h.The blocking agent has features of controlling crosslinking time,post-gelling high intensity and high blocking rate for artificial core,so it can be used for water injection well profile modification to enhance sweep efficiency and oil recovery.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2006年第3期62-63,共2页
Petroleum Geology & Oilfield Development in Daqing
关键词
发泡剂
凝胶泡沫体系
半衰期
foaming agent
gel-foam system
half-value period
