凝析气藏反常凝析现象的解释  

Views on Retrograde Condensation Mechanism

作　　者：马铭勖[1] 辛一男[1] 

机构地区：[1]中国石油大学(北京)石油工程学院

出　　处：《内蒙古石油化工》2011年第2期4-5,共2页Inner Mongolia Petrochemical Industry

摘　　要：本文总结了国内已有文献对反常凝析现象的解释并指出了它们的不足,然后提出了一种新的解释,即立足于超临界流体的性质,把井底条件下的凝析气藏看作溶液体系,利用压力和温度对溶液溶解度的影响来解释反常凝析现象。This paper concludes the domestic views of retrograde condensation mechanism and points out their shortcomings.Then a new view is put forward.In the downhole condition,the lighter hydrocarbons are supercritical and can dissolve heavy hydrocarbons.The writer regards the hydrocarbon mixtures as a solution system,so when the pressure or temperature drops,the Solubility reduces and heavy hydrocarbons condensate.

关 键 词：反常凝析 倒退冷凝 凝析气藏 油层物理 超临界流体 溶解度 

分 类 号：P618.130.2[天文地球—矿床学]