基于邻近虚拟轨迹堆叠的混合虚拟干涉测量技术,用于增强声波测井数据

IF 4.9 2区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS Surveys in Geophysics Pub Date : 2024-02-28 DOI:10.1007/s10712-024-09825-z
Song Xu, Shun Li, Zhihui Zou
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引用次数: 0

摘要

从测量数据中准确提取有用信号是理解地下信息的重要部分和挑战之一。所需的信号通常隐藏在背景噪声中,由于地下特殊的地质环境或测量仪器的一致性,信号振幅较弱。通过扩展地震干涉测量理论,将相邻虚拟道的影响包括在内,并结合超虚拟干涉测量和反向虚拟干涉测量,我们获得了一种混合虚拟干涉测量技术,该技术基于堆叠相邻虚拟道迹进行波重建。我们利用合成数据测试验证了该处理方法在抑制噪声干扰和提取有用信号方面的有效性。我们将该方法应用于处理和解释在煤层套管钻孔和火成岩层裸露钻孔中获得的声学测量结果,处理后的波形得到了精细重建,估计的慢度结果与其他测量结果吻合良好,从而为数据分析提供了有效工具。
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Hybrid Virtual Interferometry Technique Based on Stacking of Neighboring Virtual Traces to Enhance Acoustic Logging Data

The accurate extraction of useful signals from the measurement data is one of the important parts and challenges of the understanding of subsurface information. The desired signal is usually hidden in the background noise, and the amplitude is weak due to the particular geological environment of the subsurface or the consistency of the measuring instrument. By extending the theory of seismic interferometry to include the effects of adjacent virtual channels and by combining super- and reverse-virtual interferometry, we obtain a hybrid virtual interferometry technique based on stacking neighboring virtual traces for wave reconstruction. We have verified the effectiveness of the processing method in suppressing noise interference and extracting useful signals using synthetic data tests. The method is applied to the processing and interpretation of acoustic measurements acquired in a cased borehole of a coal formation and an open hole of an igneous formation, where the processed waveforms are finely reconstructed, and the estimated slowness results are in good agreement with other measurements, thus providing an effective tool for data analysis.

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来源期刊
Surveys in Geophysics
Surveys in Geophysics 地学-地球化学与地球物理
CiteScore
10.00
自引率
10.90%
发文量
64
审稿时长
4.5 months
期刊介绍: Surveys in Geophysics publishes refereed review articles on the physical, chemical and biological processes occurring within the Earth, on its surface, in its atmosphere and in the near-Earth space environment, including relations with other bodies in the solar system. Observations, their interpretation, theory and modelling are covered in papers dealing with any of the Earth and space sciences.
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