中国石油大学学报（自然科学版）2016，Vol.40Issue(5)：96-103,8.DOI:10.3969/j.issn.1673-5005.2016.05.011
氮气泡沫驱气体窜流特征实验研究
Experimental study on gas channeling problem of N2 foam flooding
摘要
Abstract
The gas channeling problem happens often during the foam flooding for enhancing oil recovery. In order to define the gas channeling opportunity and degree, the index number of gas production rate Ig was proposed. The influences of sur-factant concentration, injection manner, injection rate and oil saturation on the N2 foam flooding were investigated through physical simulation experiments. The results show that the high foam surfactant concentration can cause a high strength of liq-uid film, in which the function of liquid film flowing can reduce the chance of gas channeling. Compared with the slug injec-tion and gas/liquid injection, the foam from generator has a better quality and has less chance of gas channeling. It is also found that low velocity of injection causes the gas channeling easily. However, when the velocity is above the certain value, the blockage ability of foam becomes stable. The Ig value of 0. 5 is defined as the critical gas channeling point, above which the gas channeling will happen.关键词
氮气泡沫驱/气窜/影响因素/产气上升率指数/临界气窜点Key words
N2 foam flooding/gas channeling/affecting factor/index number of gas production rate/critical gas channeling point分类
能源科技引用本文复制引用
李兆敏,张习斌,李松岩,王弘宇,李宾飞,鹿腾..氮气泡沫驱气体窜流特征实验研究[J].中国石油大学学报（自然科学版）,2016,40(5):96-103,8.基金项目
国家油气重大专项(2011ZX05009-004) （2011ZX05009-004）
