摘要
针对分形双孔介质储层模型 ,对于裂缝介质和岩块介质分别引进了反映分形体几何特征的分形维数及分形渗流网络连通状况的分形指数 ;建立了外边界无穷大且考虑井筒储存和表皮效应下的变流率问题的试井分析数学模型 ;对一类具有广泛应用的特例 ,求得了无因次储层压力和井底压力的Laplace空间解 ,归纳出了一个通用公式 ,并对其进一步应用进行了讨论 ,对油藏数值模拟具有指导意义。
In this paper, the features of fractured media and rock matrix in fractal dual porosity reservoir model are describes with fractal dimension (describing geometric features) and fractal index(depicting connectivity of a fractal fluid flow network). A mathematical model for well testing analysis, which takes wellbore storage and skin effects in consideration, is proposed for variable flow rate with infinite outer boundary. For a special case with wide utilization, a general Laplacian space solution formula of non-dimensional reservoir pressure and non-dimensional wellbore pressure is obtained. The simple formula is useful in designing well testing analysis program and relevant applications, and it also has instructive significance into numerical reservoir simulation.
出处
《勘探地球物理进展》
2002年第5期60-62,共3页
Progress in Exploration Geophysics
