Study of the characteristic response of shear waves in igneous reservoirs based on time–frequency coupled analysis method

IF 2.3 4区地球科学

Acta Geophysica Pub Date : 2023-12-22 DOI:10.1007/s11600-023-01250-x

Zhitao Zhang, Zhuwen Wang, Ruiyi Han, Yitong Cui, Xinghua Qi

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引用次数: 0

Abstract

Time–frequency analysis methods represent an efficacious approach to process data derived from full-waveform acoustic logging. This research proposes a coupled time–frequency analysis method that synergistically incorporates ensemble empirical mode decomposition, fractional Fourier transform, Choi–Williams (CW) distribution and adaptive filtering. This coupled method facilitates the comprehensive analysis of full-waveform acoustic logging signals within rigid geological formations. Specifically, it is designed to explore the time–frequency characteristics of shear wave (S-wave) within the context of igneous reservoirs. The coupled time–frequency analysis method significantly ameliorates the time–frequency coupling phenomenon of full-waveform acoustic logging signal. This coupled method is applied across different wells to confirm its wide-ranging applicability and study the time–frequency characteristics response of S-wave through the information of the peak time of the S-wave, the main frequency and the amplitude of the CW distribution.

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基于时频耦合分析方法的火成岩储层剪切波特征响应研究

时频分析方法是处理全波形声波测井数据的有效方法。本研究提出了一种时频耦合分析方法，该方法将集合经验模式分解、分数傅里叶变换、Choi-Williams（CW）分布和自适应滤波协同结合在一起。这种耦合方法有助于全面分析刚性地质构造中的全波形声波测井信号。具体来说，它旨在探索火成岩储层中剪切波（S 波）的时频特征。耦合时频分析方法大大改善了全波形声波测井信号的时频耦合现象。这种耦合方法被应用于不同的油井，以证实其广泛的适用性，并通过 S 波的峰值时间、主频和 CW 分布振幅等信息研究 S 波的时频特征响应。

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来源期刊

Acta Geophysica GEOCHEMISTRY & GEOPHYSICS-

CiteScore

3.80

自引率

13.00%

发文量

251

期刊介绍： Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.