稠油蒸汽热采过程中冻胶封堵汽窜的机理研究与应用

Research and Application of Mechanism of Gel Blocking Gas Channeling in Steam Thermal Recovery Process for Heavy Oil

在稠油蒸汽热采过程中,汽窜现象严重影响油层的采收效率和油井的使用寿命。本文深入探讨了汽窜的成因,包括储层非均质性、井筒裂缝及地层导流通道,并系统研究了冻胶封堵汽窜的机理及其在提高油层采收率、延长油井寿命和环境经济方面的应用,为稠油热采提供了新的技术途径。In the steam thermal recovery process for heavy oil, the phenomenon of gas channeling severely affects the recovery efficiency of the oil layer and the service life of the oil wells. This paper deeply explores the causes of gas channeling, including reservoir heterogeneity, wellbore fractures, and formation conductive channels, and systematically studies the mechanism of gel blocking gas channeling and its application in improving oil layer recovery rate, extending the life of oil wells, and environmental and economic aspects, providing a new technical approach for heavy oil thermal recovery.