稠油火驱二次点火主控因素及点火策略

发布时间：2018-01-09 05:30

  本文关键词：稠油火驱二次点火主控因素及点火策略　出处：《沈阳工业大学学报》2017年01期 　论文类型：期刊论文

  更多相关文章： 火驱 二次点火 通风强度 点火温度 物理模拟 数值模拟 点火策略 灭火条件

【摘要】：为了实现火驱开发过程中熄火油层再次燃烧,保障火驱开发效果,通过一系列室内物理模拟实验和油藏数值模拟计算,开展包括点火温度、通风强度、地下含油饱和度分布、结焦带等影响二次点火的主控因素的研究,给出了合理的二次点火温度和通风强度的范围,同时结合注气井地下空气腔规模给出了不同条件下启动油层二次燃烧的点火策略.结果表明,电点火温度应控制在450℃以上,点火期间通风强度应维持在10 m~3/(m~2·h)以上,对于需要注燃料油进行二次点火的注气井,燃料油的用量不低于已燃区空气腔体积的2/7.
[Abstract]:In order to realize flameout reservoir reburning in the process of fire drive development and ensure the development effect of fire drive, a series of indoor physical simulation experiments and reservoir numerical simulation were carried out, including ignition temperature and ventilation intensity. The distribution of oil saturation, coking zone and other main controlling factors affecting secondary ignition are studied. The reasonable range of secondary ignition temperature and ventilation strength is given. At the same time, combined with the size of underground air chamber in gas injection wells, the ignition strategy for starting secondary combustion of reservoir under different conditions is given. The results show that the electric ignition temperature should be controlled above 450 鈩，

本文编号：1400192