摘要
根据微凝胶微观驱替试验研究思路,建立了试验流程和系统,探讨了注入方式驱替方法,进行了不同条件下的微凝胶微观驱替试验,对微凝胶的驱油特征及定量分析取得了初步认识。微凝胶驱油主要方式是蠕动-拉长-携带-驱出,渗流通道是以油、水、凝胶共道流为主,喉道中流动特征以变形爬行通过为主,驱后残余油多呈串珠状分布。微观定量分析结果表明:水驱后用微凝胶驱油效果最好。
Experimental flowsheet and system are established for microscopic displacement experiment with microgel,and in-jection and displacement methods are discussed.Prelimi-nary knowledge of oil -driving features of microgel and quantitative analysis are achieved through80microscopic displacement experiments of microgel under different con-ditions.The main oil-displacing modes are creeping-elon-gating-carrying-displacing;common channel of oil,water and gel is the principle seepage flow channel;the flow fea-tures in pore throats are deformational creeping;and the residual oil after displacement show beaded distribution.Mi-croscopic quantitatively analysis results show that oil-displac-ing effects of microgel are the best after waterflooding.
出处
《河南石油》
2002年第6期36-38,共3页
Henan Petroleum
关键词
微观模型
微凝胶驱
驱替试验
定量分析
三次采油
驱油
microscopic model,microgel displace-ment,displacement experiment,quantitatively analysis
