地震勘探中加速度信号转化为速度信号的分析及应用  

Analysis and application of conversion acceleration signal into velocity signal in seismic exploration

作　　者：任立刚 张剑 REN LiGang;ZHANG Jian(Sinopec Geophysical Company Limited,Sheng Li Branch,Dongying 257086,China)

机构地区：[1]中石化石油工程地球物理有限公司胜利分公司,东营257086

出　　处：《地球物理学进展》2021年第1期380-385,共6页Progress in Geophysics

基　　金：国家重大专向《地震与井筒精细勘探关键技术》(2016ZX05006002)项目资助。

摘　　要：陆上地震勘探中多采用速度型检波器接收,随着单点高密度地震勘探的开展,加速度型检波器也被日趋广泛的应用.这两种检波器接收的地震信号具有不同的响应特征,在地震勘探中经常会遇到这样的情况:两个相邻区块分别应用速度型检波器和加速度型检波器接收,需要将这两个区块的地震资料进行连片处理,两类检波器接收资料如何处理拼接?本文在理论上分析了加速度检波器测量的加速度信号和速度检波器测量的速度信号之间的数学关系;并通过数值数据模拟分析、实际的地震数据资料分析证明了加速度信号通过积分计算以及去除积分误差后转化为速度信号的可行性和正确性,并进行了相应的对比和验证.在不同类型检波器接收地震资料的拼接处理过程中应用这种转换方法进行资料处理,得到一致性很好的地震剖面.velocity geophone is often used in onshore seismic exploration. With the development of single sensor and high-density seismic exploration, acceleration geophone has been widely used. The seismic signals received by different types of geophone have different response characteristics. In seismic exploration, such situation appears frequently: the seismic exploration of two adjacent blocks are received by velocity geophone and acceleration geophone, and the seismic data of the two blocks need to be processed in tandem. But how to deal with the stitching of the data received by the two types of geophone is a problem? In this paper, the mathematical relationship between acceleration signals measured by acceleration-type geophone and velocity signals measured by speed-type geophone is analyzed theoretically. The feasibility and correctness of conversion of acceleration signal into velocity signal by integral calculation through numerical data simulation analysis and actual seismic data analysis. This method is applied to the Mosaic processing of seismic data received by different types of geophone, and obtained well consistent seismic profiles.

关 键 词：速度信号 加速度信号 积分计算 积分误差 

分 类 号：P631[天文地球—地质矿产勘探]