Abstract:

Using integrated source functions,new analytical solutions are presented in the form of Laplace transforms for horizontal wells bounded by two level planes in the vertical direction as well as two different regions in the perpendicular direction.Weakly feeding boundary conditions considered at these planes could involve the situation that one of the boundaries has a constant pressure while the others maintains a no flow boundary.The limit conditions at the composite interface include both circular no flow and constant pressure boundaries.The new solutions can be applied to not only drawdown,but also buildup tests of horizontal wells in a composite reservoir in which could exist either a gas cap or a bottom water.

Key words: horizontal well, pressure, analysis, well testing, typical curve, composite reservoir

摘要：

用汇源叠加等方法推导了水平方向圆形复合、垂向有弱渗透补给油藏中水平井不定常渗流之Laplace变换解,概括了垂向有底水或气顶、水平方向外边界存在不同渗透率区(含封闭和定压边界)的诸多情形.主要有不同渗透率区的压力分布公式、水平井试井分析有效井径模型、典型曲线计算方法、控制参数(团)影响分析、实用试井解释方法

关键词: 水平井, 压力, 分析, 试井, 典型曲线, 复合油藏