龙门山双复杂区表层结构调查方法研究  

Study on investigation method of surface structure in double complex area of Longmen Mountain

作　　者：刘远志[1] 刘胜[1] 黄秀举 梁勇[1] 陈兵[1] 王聪[1] 张志锋[1] LIU Yuanzhi;LIU Sheng;HUANG Xiuju;LIANG Yong;CHEN Bing;WANG Cong;ZHANG Zhifeng(SINOPEC geophysical corporation Nanfang Branch,Chengdu 610041,China)

机构地区：[1]中国石化石油工程地球物理有限公司南方分公司,成都610041

出　　处：《物探化探计算技术》2024年第3期306-314,共9页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：龙门山山前带地表地质条件复杂,浅表层速度及厚度差异大,给激发、接收和静校正等工作带来较大困难。表层调查工作直接影响到地下介质成像效果。为使该地区进行的地震勘探攻关能够获取准确的静校正量数据,给井深设计提供依据,研究适合该区域的表层调查方法,结合地质剖面、浅震、小层析、地面微测井、钻井取心、高密度电法、三分量共振表层调查方法的工作原理,分别应用不同方法做比对,分析了不同调查方法的应用效果。通过不同表层调查的比对,分析了不同方法的适用范围,为该区选择合适的表层调查方法及方法参数选取提供依据,同时为其他地表复杂区域进行表层调查提供参考。The surface geological conditions in the piedmont of Longmen Mountain are complex,and the shallow surface velocity and thickness vary greatly,which brings great difficulties to the shooting,reception,and static correction.Surface investigation directly affects the imaging effect of underground media.In order to obtain accurate static correction data for seismic exploration in this area and provide the basis for well-depth design,the surface investigation methods suitable for this area are studied.Combined with the working principles of geological profile,shallow earthquake,small tomography,surface micro logging,drilling coring,high-density electrical method,and three-component resonance surface investigation methods,different methods are compared,and the application effects of different investigation methods are analyzed.Through the comparison of different surface investigations,the application scope of different methods is analyzed,which provides a basis for the selection of appropriate surface investigation methods and method parameters and provides a reference for surface investigation in other complex surface areas.

关 键 词：双复杂区 表层结构 地质调查 浅震 小层析 微测井 钻井取心 高密度电法 三分量共振 

分 类 号：P631.4[天文地球—地质矿产勘探]