川东南灰岩出露区提高信噪比技术应用研究  

Application Research on Improving Signal-to-noise Ratio Technology in the Exposed Limestone Area of Southeastern Sichuan

作　　者：马江林 Ma Jianglin(Sinopec Petroleum Geophysical Exploration Technology Research Institute Co.,Ltd.,Nanjing,China)

机构地区：[1]中石化石油物探技术研究院有限公司,江苏南京

出　　处：《科学技术创新》2024年第22期77-80,共4页Scientific and Technological Innovation

摘　　要：川东南地区受近地表灰岩出露的影响,地震资料能量较弱,干扰波发育,资料的信噪比较低,本文探讨川东南山地灰岩出露区低信噪比地震资料提高信噪比技术的应用。通过对原始资料上不同干扰波特点、分布范围的分析,结合现有多种去噪方法的优劣,提出了有效提高资料信噪比的组合去噪方法,并对其在实际应用中的效果进行了评估。实际资料应用效果表明,该组合去噪方法能够在保真保幅的前提下显著提高川东南山地灰岩区地质资料的信噪比,从而为后续成像处理提供更为准确、可靠的数据。The southeastern region of Sichuan is affected by the exposure of near surface limestone,resulting in weak seismic data energy,developed interference waves,and low signal-to-noise ratio of the data.This article explores the application of low signal-to-noise ratio seismic data in the mountainous limestone exposed area of southeastern Sichuan to improve signal-to-noise ratio technology.By analyzing the characteristics and distribution range of different interference waves on the original data,and combining the advantages and disadvantages of various existing denoising methods,a combined denoising method that effectively improves the signal-to-noise ratio of the data is proposed,and its effectiveness in practical applications is evaluated.The actual application results of the data show that this combined denoising method can significantly improve the signal-to-noise ratio of geological data in the limestone area of the southeastern Sichuan mountain area while maintaining fidelity and amplitude,thereby providing more accurate and reliable data for subsequent imaging processing.

关 键 词：信噪比 干扰波特点 组合去噪 

分 类 号：P631.4[天文地球—地质矿产勘探]