低渗透气藏近井地带凝析油饱和度分布研究  

Saturation Distribution of Condensate near Borehole Zone in Low-permeability Gas Reservoir

作　　者：邓琪[1] 唐海[1] 刘鹏超[1] 吕栋梁[1] 

机构地区：[1]西南石油大学石油工程学院,四川新都610500

出　　处：《天然气技术与经济》2011年第5期23-24,78,共2页Natural Gas Technology and Economy

摘　　要：为研究低渗透气藏开发过程中近井地带析出的凝析油饱和度分布对气井产能的影响,根据所选气藏的地质特征,利用地质模型软件建立了单井模拟模型,在此基础上通过数模软件验证了凝析油饱和度随径向距离增加而减小的分布规律,发现了近井地带不同径向距离上随着生产时间的推移会相继出现一相对稳定的凝析油饱和度值的现象,提出了凝析油稳定饱和度初值压力的概念,并发现所得初值压力乘上某一系数后,在数值上近似相等于稳定的凝析油饱和度值。In order to understand the effect of saturation distribution of condensate near borehole zone on gas well deliverability during developing low-permeability gas reservoir,a single-well simulated geological model is established based on geological characteristics of selected reservoir and geological model software.And then,a distribution law that saturation decreases along with an increase of radial distance is testified and a phenomenon that relatively stable condensate saturation occurs along with production time at different radial distances near borehole zone is found.A concept,initial pressure of stable saturation for condensate,is also presented.Meanwhile,it is found that the obtained initial pressure,which times a coefficient,is approximately equal to the stable saturation.

关 键 词：低渗透 凝析油 近井地带 饱和度分布 

分 类 号：P618.13[天文地球—矿床学]