凝析气藏单井油气界面预测方法研究  

Study on Prediction Methods for Single Well Oil and Gas Interface in Gas Condensate Reservoir

作　　者：熊钰[1] 周路遥[1] 余翔[2] 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]中国石油天然气集团公司西南油气田分公司蜀南气矿,四川泸州646000

出　　处：《天然气与石油》2015年第2期60-63,11-12,共4页Natural Gas and Oil

基　　金：安岳须二气藏油气水关系及开发对策研究(XNS 03 JS 2012-096)

摘　　要：凝析气藏储层中的流体由于压力和温度的影响,往往呈现出组分随深度变化的现象,即组分梯度特征,确定凝析气藏油气界面位置对凝析气藏的合理开发具有重要意义。国内外研究认为,温度变化对组分梯度影响较小,可以忽略。因此,在推导等温组分梯度理论模型的基础上,分析了安岳气田Y 101-53-X 2井流体组分的分布情况,并利用饱和压力与油气藏压力对比图版法确定其油气界面位置约在油藏深度2 310 m。结果表明:该理论模型能准确预测凝析气藏单井油气界面位置。Due to the effect of pressure and temperature,formation fluids in condensate gas reservoirs often present the phenomenon that components change with their burial depth,which is called as compositional gradient.Determination of the GOC in condensate gas reservoirs is significant for reasonable development of such reservoirs.Study at home and abroad shows that effect of temperature variation on the compositional gradient is not obvious and can be ignored.Deduced is the isothermally theoretical model of the hydrocarbon compositional gradient,analyzed is the distribution of formation fluids in well Y101-53-X2 of Anyue Gas Field and used is the comparison chart method of saturation pressure and reservoir pressure to determine that the GOC of well Y101-53-X2 is about 2310 m under the ground.Result shows that this theoretical model can accurately estimate GOC of single well in condensate gas reservoir.

关 键 词：凝析气藏 组分梯度 饱和压力 油气界面 

分 类 号：TE372[石油与天然气工程—油气田开发工程]