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薄层识别一直以来都是石油从业者所困惑的一个技术难题。常规的时频分析技术存在一定的缺陷,而广义S变换可以根据实际信号灵活地选择窗函数,具有更好的时频分辨率。本文首先介绍了广义S变换的基本原理,然后通过提取实际工区的测井数据和地震数据,计算其S变换和广义S变换的时频谱,通过对比分析,广义S变换的时频分析效果明显优于S变换,可以有效地识别薄层。
Thin layer identification has long been a technical challenge confused by oil practitioners. The conventional time-frequency analysis technique has some drawbacks. However, the generalized S transform can select the window function flexibly according to the actual signal, and has better time-frequency resolution. In this paper, we first introduce the basic principle of generalized S transform, and then calculate the time-frequency spectrum of its S-transform and generalized S-transform by extracting the logging and seismic data of the actual work area. By contrast analysis, the time-frequency analysis of generalized S- In the S transform, can effectively identify the thin layer.