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Hybrid Virtual Interferometry Technique Based on Stacking of Neighboring Virtual Traces to Enhance Acoustic Logging Data
Surveys in Geophysics ( IF 4.6 ) Pub Date : 2024-02-28 , DOI: 10.1007/s10712-024-09825-z
Song Xu , Shun Li , Zhihui Zou

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.



中文翻译:

基于相邻虚拟轨迹叠加的混合虚拟干涉测量技术增强声波测井数据

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。期望的信号通常隐藏在背景噪声中,并且由于地下特定的地质环境或测量仪器的一致性,幅度很弱。通过扩展地震干涉测量理论以包括相邻虚拟通道的影响,并结合超虚拟干涉测量和反向虚拟干涉测量,我们获得了一种基于叠加相邻虚拟道进行波重建的混合虚拟干涉测量技术。我们通过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。该方法应用于煤层套管钻孔和火成岩地层裸眼声波测量的处理和解释,处理后的波形得到精细重建,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的工具。

更新日期:2024-02-28
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