Through analyzing the effect of temperature and nitrogen on crude oil viscosity the influences of different nitrogen injection volume and injection modes on steam displacement are contrasted, the mechanism of nitrogen-assisted steam stimulation is clarifi
Through analyzing the effect of temperature and nitrogen on crude oil viscosity the influences of different nitrogen injection volume and injection modes on steam displacement are contrasted, the mechanism of nitrogen-assisted steam stimulation is clarifi
通过分析温度、氮气对原油粘度的影响，对比不同注氮量、不同注入方式等对蒸汽驱油效果的影响，弄清了氮气辅助蒸汽增产的机理主要表现在：①氮气辅助后增加携热能力，降低残余油饱和度，②氮气的压缩膨胀作用分散和改变了原油流动形态，增强了原油流动性；③扩大蒸汽的波及体积，补充地层能量，提高回采水率，④强化蒸汽蒸馏效应。