Single well test analysis method

The invention provides a single well test analysis method. According to the method, based on a basic seepage mechanics equation, by introducing a boundary interference coefficient, circular sealing and circular constant pressure boundary conditions of a homogeneous mineral deposit Darcy seepage well test model are unified, and a new well test interpretation model is obtained. A Laplace transformation method is utilized to give an expression of the bottom hole pressure of the new model in Laplace space, and a solid space bottom hole pressure solution is obtained in combination with a Stehfest numerical inversion method. Through the method, the problem that the tail end of a well test interpretation curve abnormally warps upwards or falls down due to interference of unknown adjacent wells and other unknown factors can be effectively solved. 本发明提供了一种单井试井分析方法，本发明依据基本的渗流力学方程，通过引入边界干扰系数，将均质矿藏达西渗流试井模型的圆形封闭和圆形定压边界条件统一化，得到新的试井解释模型。利用Laplace变换法给出了新模型井底压力在Laplace空间的表达式，结合Stehfest数值反演方法获得了实空间井底压力解。本发明可以有效地解决受未知邻井和其他未知因素干