论文部分内容阅读
针对复合油藏,建立其球向不稳定渗流的试井分析模型;利用Laplace变换,解得在变流率生产情形下的储集层压力和井底压力的Laplace空间解;根据微分方程解的相似结构理论,得到在3种外边界条件下内外区的储集层压力的Laplace空间解的相似结构.解的相似结构的获得有利于进一步分析解的内在规律;便于在相应的实际问题中分析参数对于解的影响.
Aiming at the complex reservoir, a well test analysis model of unsteady ballistic seepage is established. Laplace transform is used to solve the Laplace space solution of reservoir pressure and downhole pressure under variable flow rate. According to the solution of differential equation Similar structure theory, the similar structure of Laplace space solution of reservoir pressure in the inner and outer regions under three kinds of outer boundary conditions is obtained. The acquisition of the similar structure of the solution is beneficial to the further analysis of the inherent law of the solution; it is easy to analyze in the corresponding practical problems Effect of parameters on solution.