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中、低渗透或流度较小的油藏进行试井工作时,所获取的资料基本上是密封断层过渡段的特征,利用斜率加倍关系来识别井附近密封断层存在并计算距离往往令人不满意。利用渗流基本微分方程、叠加原理、镜像反映方法,对井附近线性密封断层模型的方程进行推导,得出了利用过渡段的资料确定其存在和计算距离的关系式,并通过具体实例证明该方法的可行性。在试井解释中,对甄别井附近密封断层的真伪有较大的帮助。
In well, low-permeability or low-flow reservoirs, the acquired data is basically characteristic of the transitional section of the seal fault. It is often not clear that the use of the slope doubling relationship to identify the existence of a sealing fault near the well and to calculate the distance satisfaction. Using the basic differential equation of percolation, superposition principle and mirror reflection method, the equation of the linear sealing fault model near the well is deduced, and the relation between the existence and the calculated distance is obtained by using the data of the transition section. The method is proved by a concrete example Feasibility. In well test interpretation, it is of great help to the authenticity of the sealing fault near the screening well.