Abstract: Based on Green's function method and Newman's product method,two forms of transient pressure solutions for horizontal well in box shaped reservoir have been obtained.The method of quick calculating horizontal wellbore pressure is presented in terms of convergent characteristics of series in two solutions.Effects of wellbore storage and skin factor on horizontal wellbore pressure were considered when the method of convolution integral,numerical Laplace transformation and numerical Laplace inverse transformation were used.It is not necessary to solve the mathematical model with complicated inner conditions.The method of transient pressure analysis and interpretation software for horizontal well are provided and a field example is treated.

Key words: horizontal well, well testing, analysis, box-shaped, automatic matching

摘要： 采用Green函数方法和Newman积方法求解了盒状砂岩油藏中水平井的不稳态压力解;给出了压力解的两种表达形式,并根据两种表达式中级数的收敛特征提出了压力解的快速计算方法;采用Laplace数值变换、Laplace数值反演及褶积积分公式考虑了井储和污染对水平井井底压力的影响,从而避免了求解复杂内边界条件的数学模型的问题;利用常规试井分析方法和自动拟合分析方法编制了水平井试井分析软件,并进行了实例分析.

关键词: 水平井, 试井, 分析, 盒状油藏, 自动拟合