硅酸盐化学堵水技术研究现状及展望

Research and Prospect of Silicate Chemical Water Shutoff Technology

综述了国内外硅酸盐堵剂体系、化学堵水工艺和现场应用效果。硅酸盐堵剂主要分为硅酸盐凝胶堵剂体系、硅酸盐沉淀型堵剂体系、硅酸盐复合凝胶堵剂体系和硅酸盐颗粒堵剂体系。硅酸盐化学堵水工艺主要有单液封堵工艺、双液封堵工艺和复合段塞封堵工艺。介绍了硅酸盐化学堵水技术在冀东、大庆和塔河油田的应用效果实例。对今后硅酸盐化学堵水技术的研究提出了建议和展望。

Silicate water shutoff agent system,chemical shutoff technology and its application examples were reviewed. The silicate water shutoff agent system was divided into four types,such as silicate gel water shutoff agent system,silicate precipitation water shutoff agent system,mixed silicate water shutoff agent system and particle silicate water shutoff agent system. The silicate chemical shutoff technology was divided into three types,including single fluid shutoff method,double fluid shutoff method and mixed slug shutoff method. The effect of silicate chemical water shutoff technology in Jidong,Daqing and Tahe oilfield was introduced.The research suggestions and prospects of silicate chemical water shutoff technology were put forward.