考虑临界流动饱和度凝析气体系的吸附模型  

ABSORPTION MODEL OF GAS CONDENSATE CONSIDERING THE CRITICAL FLOWING SATURATION

作　　者：谯英[1] 

机构地区：[1]西南石油大学计算机科学学院,四川成都610500

出　　处：《西南石油学院学报》2006年第4期57-59,66,共4页Journal of Southwest Petroleum Institute

摘　　要：在凝析气藏的开发过程中,流体处于地下多孔介质中,由于多孔介质孔隙壁面的影响,毛细凝聚现象必然存在,从而不可避免地会对反凝析过程产生影响,从而影响整个凝析气体系的相态特征。在考虑凝析油临界流动饱和度的基础上,改进了凝析气在多孔介质中的气液混合吸附模型,在以往的吸附模型中加入临界流动饱和度对吸附的影响这一条件,使得新的吸附模型更具有真实性,能更好的模拟多孔介质中凝析气体系的相态问题,并且对一个真实凝析气藏的相态作了计算。采用新建立的模型计算多孔介质中反凝析饱和度比不考虑多孔介质吸附时要大,气相摩尔分数减小,液相摩尔分数增加。During the exploitation process of the condensate gas reservoir,the fluid is in the porous media in the formation,the absorption phenomena exist because of the influence causing by the porous media,so that this phenomenon will influence on the retrograde condensation inevitability.This will be leading to the phase characteristic of the condensation been influenced.Based on considering the critical flowing saturation in this paper,improving a new gas and liquid absorption model of condensate gas,adding the critical flowing saturation influence on the absorption model,and in this way,the new model will be more authentic and be able to stimulate the phase behavior of condensate gas in really formation better.The result which was calculated by the new model in this paper was that the saturation of retrograde condensation considered in porous media was higher than the one which not in the porous media,and the mole fraction of the vapor was decreased,and liquid increased.

关 键 词：相态 多孔介质 吸附 临界流动饱和度 

分 类 号：TE319[石油与天然气工程—油气田开发工程]