考虑高速流动效应的凝析液饱和度变化规律

被引:4
作者
康晓东
李相方
覃斌
程时清
机构
[1] 石油大学石油天然气工程学院
[2] 石油大学石油天然气工程学院 北京昌平
[3] 北京昌平
关键词
凝析气藏; 毛管数; 非达西;
D O I
10.16076/j.cnki.cjhd.2005.01.007
中图分类号
TE312 [油气水渗流力学];
学科分类号
082002 ;
摘要
建立了凝析气藏的油气两相渗流数学模型及其数值模型,并给出了求取数值解的隐式压力显式饱和度(IMP ES)方法。首次用数值解方法研究了考虑毛管数效应、非达西效应及其耦合作用高速流动效应下凝析油气混合物渗流规律。根据计算结果,考虑毛管数效应后的凝析油平均饱和度明显低于不考虑毛管数效应的模型,在较高产量下,凝析油饱和度沿径向方向先增加后减小,表现出明显的速度剥离效应。而非达西效应则导致更高凝析油饱和度,尤其以近井地带明显。两种效应的耦合作用通常是降低凝析油饱和度,即高速流动有利于提高凝析气井产能。
引用
收藏
页码:38 / 43
页数:6
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