测井沉积微相自动识别与应用

Automatic Identification of Sedimentary Microfacies with Log Data and Its Application

利用测井资料快速准确地确定沉积微相是油田勘探开发需要研究解决的问题。提出了一种方法,根据测井曲线的变化特点,自动划分沉积旋回,并通过描述曲线形态变化的一系列特征参数,自动判断沉积微相。完善了自动划分沉积旋回和沉积微相的计算机程序,处理了苏里格气田的资料,收到了较好的效果。

Sedimentary microfacies determination is an important and basic work for reservoir description, which is very time-consuming and bald. But with development of oilfield, more and more well logging data and other irrformation are available. A lot of references have set up the relationship of microfacies and well logging curves. So the geologists and reservoir engineers always want to determine microfacies automatically. However, it is difficult to depict the shapes of logging curves and imitate the thinking procession of geologists and convey it to computer. This paper provides a method which includes two steps to complete this work. The first is sedimentary unit division and the second is determination of sedimentary microfacies. Based on this method, these parameters can determine the shape types according to certain principle, computer program has been also developed to perform this work, and a log example is given to explain how to use this method. The results show this method is effective.