摘要
利用压力叠加原理，建立了裂缝性油藏交叉断层条件下的数学模型，得到现场适用的拉普拉斯空间解。研制出了相应的试井理论曲线，并分析了压力及其导数理论曲线的特点。这些典型曲线在早期为单位斜率直线。在过渡期，压力导数曲线为数值低于０．５的无限作用径向流水平线，呈现“凹”字型；在晚期，压力导数曲线为数值高于０．５的无限作用径向流水平线，而呈现“上翘”。这些理论曲线既可用于压力降落试井分析，又可用于压力恢复试井分析。举例说明了理论曲线在试井分析中的应用。
A mathematical model of fractured reservoir with intersecting faults is established using pressure superposition principle. The solution to the model is given by Laplace transformation method. The typical well testing curves are made. The behaviors of the typical curves are analyzed. Previously, the typical curves follow a unit slope straight line. During transition period, the curves of pressure derivative is below 0.5 infinite acting radial flow straight line, assumes a concave shape. Previously, the curves of pressure derivative is high 0.5 infinite acting radial flow straight line, assumes an up shape. These typical curves can be used to analyse buildup/drawdown data. A field example is given.
出处
《大庆石油学院学报》
CAS
北大核心
1998年第2期67-69,共3页
Journal of Daqing Petroleum Institute
基金
国家"九五"科技攻关课题国家"九五"科技攻关课题
关键词
裂缝性油藏
交叉断层
试井
数学模型
fractured reservoir,intersecting faults,well test,mathematical model,theoretical curves
