波阻抗反演技术在地震勘探煤层解释中的运用  

Application of Wave Impedance Inversion Technique in Coal Seam Interpretation of Seismic Exploration

作　　者：陈德元 Deyuan Chen(National Center for Modern Geological Exploration Engineering Technology,Langfang,Hebei,065000,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang,Hebei,065000,China)

机构地区：[1]国家现代地质勘查工程技术研究中心,河北廊坊065000 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《测绘与勘探》2019年第1期23-25,共3页Journal of Mapping and Exploration

摘　　要：以择新疆吐哈煤田大南湖矿区为例,研究波阻抗反演技术在三维地震勘探煤层解释中的应用,介绍了新疆哈密市的东二B井田矿区的煤层分布特征等基本情况。设置观测系统,运用408UL遥测多道数字地震仪设计采集系统,采用408UL遥测多道数字地震仪分析煤层反射波特征,得出各煤层反射波能量逐渐变弱;分析波阻抗反演方式的运用结果,能够直接反映地层结构物性,得到清晰的地层岩性分布信息以及分辨率更高的地层纵横向分辨率;将反射波形资料转化为波阻抗资料形式,提升了井间地震资料的分辨率,为波阻抗反演技术在对复杂煤层及煤层结构解释层面的运用提供了指导意见。Taking Dananhu mining area of Tuha coalfield in Xinjiang as an example,this paper studies the application of wave impedance inversion technology in coal seam interpretation of three-dimensional seismic exploration,and introduces the basic situation of coal seam distribution characteristics in east 2B mining area of Hami City,Xinjiang.Setting up observation system,using 408UL telemetry multi-channel digital seismograph to design acquisition system,using 408UL telemetry multi-channel digital seismograph to analyze the characteristics of coal seam reflection wave,it is concluded that the reflected wave energy of each coal seam is gradually weakening.Analyzing the application results of wave impedance inversion can directly reflect the physical properties of stratum structure and obtain clear information of stratum lithology distribution and higher resolution of stratum in both vertical and horizontal directions.The resolution of cross-well seismic data is improved by converting reflected waveform data into wave impedance data,which provides guidance for the application of wave impedance inversion technology in the interpretation of complex coal seam and coal seam structure.

关 键 词：波阻抗反演技术 地震勘探煤层解释 纵横向分辨率 

分 类 号：P61[天文地球—矿床学]