OBN数据三分量重定向分析与质控  

Three-component reorientation analysis and quality control for OBN data

作　　者：张文波 张少华 孙鹏远 钱忠平 李建峰 李晓宇 ZHANG Wenbo;ZHANG Shaohua;SUN Pengyuan;QIAN Zhongping;LI Jianfeng;LI Xiaoyu(BGP Inc.,CNPC,Zhuozhou,Hebei 072750,China)

机构地区：[1]东方地球物理公司,河北涿州072751

出　　处：《石油地球物理勘探》2023年第3期610-616,共7页Oil Geophysical Prospecting

基　　金：中国石油集团科学研究与技术开发项目“三维弹性波数据处理新方法探索研究”(2021DJ3506);“海洋节点(OBN)地震数据处理软件开发”(2021ZG02)联合资助。

摘　　要：海底节点(Ocean Bottom Node,OBN)地震数据采集时,通常会记录描述三分量检波器在海底放置姿态的定向参数。利用现场记录的定向参数,通过三分量旋转对三分量数据进行现场重定向校正,可有效消除由三分量检波器放置姿态引起的记录波场在不同分量上的串扰现象。但是,如果现场记录的三分量检波器定向参数缺失或精度低,就需对OBN地震数据进行基于数据的三分量检波器定向分析和校正。为此,提出了一种综合利用OBN三分量记录不同分量上的初至波和反射波能量的三分量检波器重定向分析方法,并给出了实际OBN数据的三分量检波器重定向处理流程及效果质控手段。由于综合利用了初至波和反射波信息,该方法既适应深水也适应浅水OBN数据三分量检波器重定向处理,并且具有很好的稳定性。When ocean bottom node(OBN)seismic data are collected,the orientation parameters describing the attitude of the three-component geophone placed on the seabed are usually recorded.The orientation parameters recorded in the field are used for the field reorientation correction of the three-component data by three-component rotation,which can effectively eliminate the crosstalk of the recorded wave field caused by the attitude of the three-component geophone on different components.However,if the orientation parameters of the three-component geophone fail to be recorded in the field,or their accuracy is low,it is necessary to carry out the three-component geophone orientation analysis and correction of the OBN seismic data.Therefore,this paper proposes a three-component geophone reorientation analysis method that comprehensively uses OBN three components to record the first arrival wave and reflected wave energies on different components,and the paper gives the three-component geophone reorientation processing flow and quality control tools for real OBN data.As it comprehensively uses the first arrival wave and reflected wave information,this method is available to the three-component geophone reorientation processing for both deep-water and shallow-water OBN data and has algorithm excellent stability.

关 键 词：OBN数据 三分量检波器重定向分析 三分量数据重定向质控 欧拉角 

分 类 号：P631[天文地球—地质矿产勘探]