正演模拟在陇东页岩层反射波解释中的应用  

APPLICATION OF FORWARD MODELING ON INTERPRETATION SEISMIC REFLECTED WAVE OF SHALE BED IN EAST GANSU

作　　者：张玉军 ZHANG Yu-jun(Comprehensive Survey Team of Gansu Bureau of Coal Geology,Tianshui 741002,China)

机构地区：[1]甘肃煤田地质局综合普查队,甘肃天水741002

出　　处：《甘肃地质》2021年第2期43-49,共7页Gansu Geology

摘　　要：基于波动方程理论,以陇东地层结构为基础建立地质模型,针对页岩层这一重点研究对象,采用Tesseral软件进行有限差分法全波场正演技术,模拟计算陇东地区较为发育的反射波组,以便分析研究包括页岩层在内的各个反射波组特征。同时结合人工合成地震记录,并与实际地震时间剖面匹配对比,从而标定各个反射波组的地质属性,最终对页岩层反射波做出准确、合理的地质解释。Based on the wave equation theory, the geological model is established on the basis of the Longdong stratum structure. For the key research object of the shale layer, the Tesseral software is used to perform the full-wave forward modeling technology of the finite difference method to simulate and calculate the more developed reflection wave group in the Longdong area. In order to analyze and study the characteristics of various reflected wave groups including shale layers. At the same time, combined with synthetic seismic records,and matching with the actual seismic time profile matching, so as to calibrate the geological properties of each reflected wave group, and finally make an accurate and reasonable geological interpretation of the shale layer reflected waves.

关 键 词：地质模型 页岩层 正演模拟 波组特征 地质解释 

分 类 号：P631.4[天文地球—地质矿产勘探]