超低渗透油藏空气泡沫驱油效率研究

发布时间：2018-05-24 00:38

本文选题：非均质 + 超低渗透油藏　；参考：《石油与天然气化工》2017年01期

【摘要】：针对超低渗透非均质油藏开发过程中单井产量低、含水上升快、水驱动用程度低的特点,提出进行空气泡沫驱油,对空气泡沫驱油的影响因素进行研究。采用室内实验方法研究了储层非均质性、气液比、泡沫注入体积、泡沫注入段塞组合以及注入时机对空气泡沫驱油效率的影响。结果表明,对于非均质储层,空气泡沫驱可以有效地动用低渗透储层中的剩余油,最优的注入气液比为1∶1,最优的注入体积为0.2PV,最优的段塞大小是0.05PV,最优的注入时机为含水率达80%以上时进行泡沫注入。研究结论对于非均质超低渗透油藏进行空气泡沫驱油具有借鉴和指导价值。
[Abstract]:In view of the characteristics of low single well production, fast water cut rise and low water driving degree during the development of ultra-low permeability heterogeneous reservoir, this paper puts forward that air foam flooding is carried out, and the influencing factors of air foam flooding are studied. The effects of reservoir heterogeneity, gas-liquid ratio, foam injection volume, foam injection slug combination and injection timing on the oil displacement efficiency of air foam were studied by laboratory experiments. The results show that, for heterogeneous reservoirs, air foam flooding can effectively produce residual oil in low permeability reservoirs. The optimal injection gas / liquid ratio is 1: 1, the optimal injection volume is 0.2 PVS, the optimal slug size is 0.05 PV.The optimal injection time is foam injection when the water content is over 80%. The conclusions are valuable for the application of air foam flooding in heterogeneous ultra-low permeability reservoirs.
【作者单位】：西安石油大学石油工程学院;中国石油长庆油田第三采气厂;中国石油长庆油田第六采油厂;
【基金】：国家自然科学基金“火烧油层过程中稠油氧化反应的启动机理及干预机制”(51404199) 陕西省自然科学基金项目“低渗透砂岩油藏氮气泡沫辅助CO2驱提高采收率机理研究”(2013JQ7019) 陕西省教育厅科研计划项目“低渗透裂缝性油藏三相泡沫体系调驱机理研究”(14JK1564)
【分类号】：TE357.46

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