精确、近似镜像反映在不稳定试井分析中的区别

在油藏断层附近布井，必须得到较准确的断层距离。现有的现代试井解释方法中，断层距离这一参数的获得，往往是通过近似镜像反映方法得到的。但用此方法求出的断层距离误差较大。为解决这一问题，在近似镜像反映的基础上提出精确的镜像反映方法，通过对实例的模拟对比分析，采用精确镜像反映方法进行试井解释，曲线拟合程度较高，求得的断层距离更为精确，为油田开发提供可靠的依据。如果采用近似的镜像反映方法，其结果必须校正。

DIFFERENCE BETWEEN APPROXIMATE AND PRECISE MIRRORREFLECTIONS IN TRANSIENT WELL TEST

We must find out the accurate distances to faults at first to determine where we can drill nearby reservoir faults. But among all the modern well test interpretation models, the distances to faults are obtained based on approximate mirror reflection theory which usually brings bigger error. However, we can solve this problem by precise mirror reflection model presented in this paper. The field case study proved that the curve matching based on precise mirror reflection model is much better, the distances to faults more accurate which are very useful to oil field development. The results must be revised if approximate mirror reflection model are applied.