多孔介质中凝析油气体系析蜡实验  

The Experiment of Wax Precipitation from Oil-Gas Condensate System in Porous Media

作　　者：燕良东[1] 朱维耀[2] 宋洪庆[2] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]北京科技大学土木与环境学院,北京100083

出　　处：《新疆石油地质》2009年第6期761-763,共3页Xinjiang Petroleum Geology

基　　金：国家973项目;中低丰度天然气藏大面积成藏机理与有效开发的基础研究(2007CB209506)资助

摘　　要：通过高温高压仿真模型实验,研究了凝析油气体系在多孔介质内的固相析出机理,发现等温降压过程与等压降温过程中固相的析出具有不同特征。根据相平衡理论和界面化学原理,建立了能够模拟多孔介质中气、液、固三相相平衡的热力学模型。依据模型对实际体系进行了计算,计算结果重现了实验中观察到的现象,合理解释了等温降压实验和等压降温实验时固相析出呈不同特征的原因。The mechanism of wax precipitation from oil-gas condensate system in porous media is researched by realistic model experiment with high temperature and pressure. It is shown that there are different characteristics of wax precipitation in the processes of isobaric cooling and isothermal decompression, respectively. A thermodynamic mathematic model was presented to simulate three-phase equilibrium of gas, liquid and solid based on theory of phase equilibrium and principle of interracial chemistry. The case study using this thermodynamic mathematic model is in accordance with the lab findings, by which the reason for different c;haractefistics of wax precipitation in the processes of isobaric cooling and isothermal decompression can be explained rationally.

关 键 词：多孔介质 固相 热力学 实验数据 机理 

分 类 号：TE124[石油与天然气工程—油气勘探]