多孔介质中凝析油气体系相平衡规律的研究现状及其意义  

RESEARCH STATUS QUO OF CONDENSATE SYSTEM PHASE EQUILIBRIUM RULE IN POROUS MEDIA AND ITS SIGNIFICANCE

作　　者：杨小松[1] 孙雷[1] 孙良田[1] 石勇 黄全华[1] 

机构地区：[1]西南石油学院石油工程学院 [2]青海省花土沟采油二厂

出　　处：《天然气勘探与开发》2005年第2期54-58,i006,共6页Natural Gas Exploration and Development

基　　金："油气藏地质及开发工程国家重点实验室(西南石油学院)"(PLN0126)

摘　　要：凝析气藏相平衡过程发生于地下多孔介质中,其相平衡过程和常规PVT筒有很大的差别,因此对多孔介质中凝析油气相平衡的研究具有重要的意义。对国内外在多孔介质中,凝析油气相平衡的物理模拟技术和理论模型的研究现状进行分析认为,目前还没有能准确地测试凝析油气混合物,在真实岩心中的相态变化的物理模拟技术。在相平衡计算模型方面,考虑气固吸附、毛细凝聚、毛管力影响的相平衡模型已较成熟,凝析油与多孔介质吸附的相平衡计算模型还有待发展。目前国外尽管在多孔介质对凝析油气相平衡的影响上仍有争议,但由于该研究直接关系到凝析油气相平衡测试方法和理论、渗流理论及试井解释方法的发展,仍有必要对该课题进行深入而严密的研究。The phase equilibrium of condensate gas reservoir occurs in subsurface porous media, which is quite different from that in conventional PVT cell, so there is an important significance for the research of condensate phase equilibrium in porous media ( PEPM ).With the analysis on the research status quo of physical analogue technique and theoretical modeling of condensate phase equilibrium in porous media at home and abroad, we deem that currently there is no physical analogue technique that can exactly test the phase change of condensate mixture in real core. In the respect of phase equilibrium calculation model, the phase equilibrium model considering gas-solid adsorption, capillary coagulation, and capillary force influence has been rather ripe, but the phase equilibrium calculation model of condensate oil adorption with porous media is to be developed. At present , although internationally there is a debate on porous media influencing condensate phase equilibrium , it is still necessary to make a further study on it, because of the research on PEPM directly playing an important part in the development of condensate phase equilibrium testing method and theory, percolation theory and well test interpretation.

关 键 词：多孔介质 研究现状 凝析油气体系 平衡规律 平衡计算模型 气相平衡 试井解释方法 平衡过程 模拟技术 油气混合物 凝析气藏 理论模型 相态变化 气固吸附 平衡模型 测试方法 渗流理论 PVT 国内外 毛管力 物理 地下 岩心 

分 类 号：P618.13[天文地球—矿床学]