摘要
减氧空气驱通过补充地层能量、依靠重力分异作用来增加油藏上部驱替效果,从而提高波及系数与驱油效率,该技术作为低渗透非常规油气藏能量补充的新途径,是未来几十年内具有发展潜力的战略性技术。通过开展室内注空气爆炸极限实验,对减氧空气驱注空气过程中不同可燃气体爆炸特性与影响因素进行研究,分析混合气体中不同组分爆炸极限、临界氧含量以及不同温度、压力条件下对爆炸极限的影响规律,并进一步建立减氧空气驱理想模型,对注入气含氧量进行数值模拟,最后结合实验数据分析注入气含氧量的最优值百分比。
The oxygen-reduced air flooding increases the displacement effect and the oil displacement efficiency by supplementing the formation energy and relying on gravity differentiation to increase the upper displacement effect of the reservoir.As a new way to supply the energy of low-permeability unconventional oil and gas reservoirs,this technology is a strategic technology with development potential in the next few decades.Aiming at the broad application prospect of this technology,the explosion characteristics and influencing factors of different combustible gases in the air-injection process of oxygen-reduced air were studied by conducting indoor air-explosion limit experiment,and the explosion limit and critical oxygen content of different components in mixed gas were analyzed as well as the effect of different temperature and pressure conditions on the explosion temperature limit.Furthermore,an ideal model of oxygen-reduced air flooding was established,and the oxygen content of the injected gas was numerically simulated.Finally,the optimal value of the oxygen content of the injected gas was analyzed based on the experimental data.
作者
杨钊
宋洋
韩爽
徐泰喜
YANG Zhao;SONG Yang;HAN Shuang;XU Tai-xi(College of Petroleum Engineering,Northeast Petroleum University,Heilongjiang Daqing 163318,China)
出处
《当代化工》
CAS
2020年第3期559-563,569,共6页
Contemporary Chemical Industry
关键词
减氧空气驱
爆炸极限
临界氧含量
碳氢化合物
数值模拟
oxygen-reduced air flooding
explosion limit
critical oxygen content
hydrocarbon
numerical simulation
