改善蒸汽辅助重力泄油技术研究进展*

Research Progresses on Improving Steam-assisted Gravity Drainage Application for Heavy Oil Recovery

舒 展 裴海华 张贵才 葛际江 蒋 平 曹 旭

SHU Zhan，PEI Haihua，ZHANG Guicai，GE Jijiang，JIANG Ping，CAO Xu

蒸汽辅助重力泄油（SAGD）技术广泛应用于超稠油油藏开采，但在开发过程中存在汽窜严重、热利用率低等问题。通过总结目前改善SAGD开发效果的主要技术方法，如气体辅助SAGD技术、溶剂辅助SAGD技术、泡沫辅助SAGD技术、化学添加剂辅助SAGD技术，介绍了改善SAGD技术的作用机理和提高采收率效果，指出了存在的问题并提出了使用建议。应综合考虑油藏地质条件与施工条件的差异，选择不同的辅助SAGD技术使经济效益最大化。参45

Steam-assisted gravity drainage（SAGD）technology is widely used in the production of ultra-heavy oil，but there are problems such as severe steam channeling and low heat utilization during the development process. By summarizing the current main technical methods to improve the development effect of SAGD，such as gas-assisted SAGD technology，solvent-assisted SAGD technology，foam-assisted SAGD technology and chemical additive-assisted SAGD technology，the mechanism of improving SAGD technology and the effect of improving recovery efficiency were introduced. The existing problems and suggestions for use were put forward. The differences between reservoir geological conditions and construction conditions should be considered comprehensively，and different auxiliary SAGD technologies should be selected to maximize the economic benefits.

10.19346/j.cnki.1000-4092.2020.01.032