微气泡驱与空气泡沫驱技术差异性及调整对策
Technical differences between microbubble flooding and air foam flooding and adjustment countermeasures
沈焕文 1马云成 1陈建宏 1王艳玲 1李化斌 1贺艳玫1
作者信息
- 1. 中国石油长庆油田分公司第三采油厂,宁夏银川 750006
- 折叠
摘要
微气泡驱与空气泡沫驱技术经过矿场试验,在低渗高含水率油藏具有较强的适应性,但对于两种气驱机理认识及技术政策调整思路方式上仍存在短板.本文通过深入研究两种气驱技术机理、驱替特征的差异性,结合现场动态调整效果,认为微气泡驱以物理发泡为主,驱替特征呈气液同驱,采取低气液比(1.0∶3.0)的技术政策,空气泡沫驱以化学发泡为主,驱替特征呈气驱为主液相为辅,采取高气液比(3.0∶1.0)的调整思路,并提出了气驱分注试验的调整对策,控水增油效果显著提升,提高采收率趋势良好.对同类油藏两种气驱技术调整界限具有一定的借鉴指导意义.
Abstract
After field test,microbubble flooding and air foam flooding have strong adaptabil-ity in low permeability and high water cut reservoirs,but there are still shortcomings in un-derstanding the mechanism of the two gas flooding and the way of adjusting technical poli-cies.Based on in-depth study of the differences in the mechanism and displacement charac-teristics of the two gas flooding technologies,combined with the field dynamic adjustment ef-fect,this paper holds that the microbubble flooding is mainly physical foaming,the displace-ment characteristics are gas-liquid co-flooding,the technical policy of low gas-liquid ratio(1.0∶3.0)is adopted.The air foam flooding is mainly chemical foaming,and the driving characteristics are gas flooding,supplemented by liquid phase,and the adjustment idea of gas-liquid ratio(3.0∶1.0)is adopted,and the adjustment of gas flooding separate injection test is put forward.The effect of water control and oil increase was significantly improved,and the trend of enhanced oil recovery was good.It has certain reference and guiding signifi-cance for adjusting the boundary of two kinds of gas drive technologies in similar reservoirs.
关键词
微气泡驱/空气泡沫驱/技术差异性Key words
microbubble flooding/air foam flooding/technical differences引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据