油田用铬交联聚合物凝胶研究进展综述

Research progress of chromium cross-linked polymer gel used in oilfield

铬交联聚合物凝胶具有成胶时间可控、传输能力强及成胶效果好等优点,能有效改善地层非均质性、提高原油采收率。国内外石油工作者在聚合物驱油技术和铝交联聚合物凝胶研究的基础上,对铬交联聚合物凝胶做了大量的室内研究工作,并在油田应用中取得了很好的增油降水效果。本文从铬交联聚合物凝胶的定义、成胶机理、评价方法、室内实验及矿场应用等方面综述了铬交联聚合物凝胶的研究工作,并指出了铬交联聚合物凝胶的发展方向。

Chromium cross-linked polymer gel has the advantages of controllable gelation time,strong transmission capacity and good gelation effect.It can effectively improve the formation heterogeneity and enhance the oil recovery.Based on the research of polymer flooding technology and aluminum cross-linked polymer gel,domestic and foreign petroleum workers have done a lot of indoor research work on chromium cross-linked polymer gel,and chromium cross-linked polymer gel also achieved good oil and water lowering effect in oilfield application.In this paper,the research work of chromium cross-linked polymer gel is reviewed from the definition,gelation mechanism,evaluation method,laboratory experiment and field application of chromium cross-linked polymer gel,and the development direction of chromium cross-linked polymer gel is also pointed out.