石油钻采工艺Issue(6)：63-66,4.DOI:10.13639/j.odpt.2015.06.015
非均质储层水驱剩余油分布及其挖潜室内模拟研究
Distribution of remaining oil by water lfooding in heterogeneous reservoirs and indoor simulation study for its potential tapping
摘要
Abstract
In order to tap the potentiality of the remaining oil from water lfooded layer of the long-term water lfooding oil ifelds, a visualized heterogeneous model was developed through analyses of the pore structure and the size of pore throats of the reservoirs, which was used to carry out indoor observation of the formation process of water lfooding remaining oil by way of video and analysis was conducted of its distribution characteristics and way of thinking of potential tapping techniques. Based on the material properties of elastic particles in throat structure, the screening principle for the diameter of this elastic particle which was in match with reservoir throat was presented. And through test of proifle control of particles after water lfooding in heterogeneous cores, evaluation was made on the dynamic plugging capacity and proifle control effectiveness of this elastic particle. The results show that heterogeneity occurs commonly in oilifeld reservoirs, which affects the distribution of water lfooding remaining oil;the remaining oil in lfooded layers is mainly heterogeneous remaining oil, mostly found in local low-permeability zones of the layers and distributed dispersedly, so its potential tapping will be mainly by improving the microscopic sweep efifciency;the plugging strength of elastic particles on throat increases ifrst and then keeps constant with the enlarging of elastic particle diameter-when the ratio of particle diameter with throat diameter is over 3, the particles will be broken in throat structure;when plugging the water channel in water lfooded layer and tapping the remaining oil, the elastic particle works effectively whose diameter is three times of the size of throat.关键词
剩余油/调剖/弹性颗粒/非均质性/可视化模型/室内模拟研究Key words
remaining oil/proifle control/elastic particle/heterogeneity/visualized model/indoor simulation study分类
能源科技引用本文复制引用
董利飞,岳湘安,苏群,张德鑫,张昱,宋伟新..非均质储层水驱剩余油分布及其挖潜室内模拟研究[J].石油钻采工艺,2015,(6):63-66,4.基金项目
国家科技重大专项“油田开采后期提高采收率新技术”（2011ZX05009-004）。 （）
