应用递减典型曲线评价水平气井动储量（英文）

Using Decline Type Curve to Evaluate Dynamic Reserve of Horizontal Gas Wells

在建立圆形封闭气藏水平井不稳态流数学模型的基础上,应用Laplace变换等方法求得了模型的Laplace空间解。通过Stehfest反演算法绘制了水平气井的递减典型曲线图版;并且用实例说明了水平气井递减典型曲线图版的应用过程。计算结果表明,该图版可以很好的计算水平井的动态储量,且精度较高,对以后气田水平井的的储量评价、开发方案设计等方面具有现实意义。

Based on horizontal well non-steady flow mathematical model in cylindrical gas reservoir,the model＇s solution is obtained by means of Laplace transforms.And also decline type curve for horizontal well is figured using Stehfest inversion.An example is used to illustrate the application of horizontal well decline type curve.The results show that it can evaluate dynamic reserve of horizontal well very well and has high accuracy.This method is of great significance for efficient development of low permeability gas reservoir,evaluating horizontal well＇ s reserve and development program design.