摘要
松辽盆地西南部砂岩型铀矿老地震资料受采集技术限制和复杂表层结构的影响,原始资料干扰波发育,高频吸收严重,有效波信号弱,加之当时数据处理方法技术有限,导致最终成果剖面已无法满足现今连片解释的需求。通过分析砂岩型铀矿老地震资料的特点,并有针对性的采用叠前综合去噪、振幅补偿、串联反褶积和叠后拓频等关键技术进行处理,建立了一套低信噪比、低覆盖次数地震资料处理流程。结果表明再处理后的地震数据分辨率和信噪比均有了明显的提升,资料的可解释性增强,为连片解释工作奠定了良好的数据基础。
The old seismic data of sandstone type uranium deposits in the southwest of the Songliao Basin are limited by acquisition technology and complex surface structures.The original data has developed interference waves,severe high-frequency absorption,and weak effective wave signals.In addition,the data processing methods and technologies at that time are limited,resulting in the inability of the final result profile to meet the current requirements for continuous interpretation.This paper analyzes the characteristics of old seismic data from sandstone type uranium mines,and adopts targeted key technologies such as pre-stack comprehensive denoising,amplitude compensation,series deconvolution,and post stack frequency extension for processing.A low signal-to-noise ratio and low coverage seismic data processing flow is established.The results show that the resolution and signal-tonoise ratio of the reprocessed seismic data are significantly improved,and the interpretability of the data is enhanced,laying a good data foundation for the continuous interpretation work.
作者
王若雯
宁媛丽
赵威
杨晓柳
朱圣伟
李金鑫
WANG Ruowen;NING Yuanli;ZHAO Wei;YANG Xiaoliu;ZHU Shengwei;LI Jinxin(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,China)
出处
《中国矿业》
北大核心
2025年第S1期613-619,共7页
China Mining Magazine
基金
中国核工业地质局项目“松辽盆地西南部地震地质建模研究”资助(编号:202411-5)
中国核工业地质局项目“内蒙古通辽市胡力海-吉林省双辽市秀水地区地震勘探”资助(编号:202311-2)。
关键词
低信噪比
叠前去噪
振幅补偿
精细处理
松辽盆地西南部
low SNR
pre-stack denoising
amplitude compensation
fine processing
Southwestern Songliao Basin
