化学驱提高油气采收率方法综述

摘要

How to improve oil-gas recovery efficiency is always a topic explored in oil industry all over the world, in particular when reservoir development enters into high water cut period. The primary technologies of improving oil-gas recovery efficiency include chemical flooding, gas flooding and thermal recovery. In China, we are enlarging the scale of chemical flooding gradually and going into the large-scale application. In this paper, three methods of chemical flooding were summarized, and major problems and development trends of chemical flooding were analyzed combined with the international existing experiences.%随着越来越多的油藏进入高含水开采阶段，如何提高油气采收率现已成为国内外石油行业探索研究的热点和难点。提高采收率的方法包括化学驱、气驱和热力采油等。其中，化学驱油技术具有坚实的理论基础，并已得到广泛应用。对三种常用的化学驱方法作简要介绍，并结合应用实例分析了化学驱目前面临的主要问题及未来发展趋势。