多孔介质中凝析油气体系的定容衰竭相平衡计算  

Phase equilibrium calculation of constant volume depletion for a condensate system in porous medium

作　　者：周守信[1] 徐严波[2] 张媛[1] 尹显林[3] 李玉林[3] 

机构地区：[1]中海石油研究中心 [2]中石化石油勘探开发研究院 [3]塔里木油田公司开发事业部

出　　处：《中国海上油气（工程）》2004年第5期324-327,共4页China Offshore Oil and Gas

摘　　要：油气藏储层中的流体要受到毛细管压力、气相吸附、液相吸附、毛细凝聚、色谱分离等各种界面作用的影响 ,因此凝析油气体系在油气藏储层中的相态变化和在PVT筒中的相态变化有着很大的差别。文中建立了考虑气相吸附、液相吸附、毛细管压力影响的定容衰竭相平衡计算模型 ,以我国PH凝析气田为例 ,进行了考虑多孔介质界面现象影响的定容衰竭模拟计算 ,论证了气相吸附、液相吸附、毛细管压力对定容衰竭相平衡计算结果的影响程度 ,并将计算结果与不考虑多孔介质界面现象影响的计算结果作了对比和分析 ,结果表明 。The fluids in reservoir are generally affected by various surface phenomena, such as capillary pressure, gas adsorption, liquid adsorption, capillary agglomeration, chromatographic fractionation and so on, and for a condensate system, the phase behavior in reservoir is much different from that in PVT barrel. Therefore, a phase equilibrium calculation model of constant volume depletion is set up by considering gas adsorption, liquid adsorption and capillary pressure. In order to demonstrate the effects of gas and liquid adsorption and capillary pressure on the phase equilibrium calculation of constant volume depletion, PH condensate gas field in China has been taken as an example, and a modeling constant volume depletion is calculated by considering porous medium surface phenomena. The calculation results have been compared with those without considering porous medium surface phenomena, indicating that these phenomena have more significant effects on phase equilibrium calculation of constant volume depletion for a condensate system.

关 键 词：多孔介质 凝析油 气体 毛细管压力 定容衰竭 相平衡 计算方法 

分 类 号：TE32[石油与天然气工程—油气田开发工程] TE319