摘要
在滩、浅海勘探中,检波器位置会发生漂移,因此室内资料处理时必须对检波器位置进行二次定位。目前,检波点的二次定位精度已成为评价OBC勘探数据采集质量的重要指标。本文首先分析了当前OBC勘探中声波二次定位方法及初至波二次定位方法的优缺点;并在这些传统检波器二次定位方法的基础上,提出了一种新的初至波二次定位方法——扫描拟合法,该方法通过网格扫描、曲面拟合、求曲面极值来确定检波点的二次定位坐标。实际应用效果表明,本算法具有运算速度快、定位精度高等优点。
Abstract
OBC sensors are often drifted in TZ or offshore seismic exploration.Therefore getting the real positions of the sensors is needed during data processing.Nowadays the sensors secondary positioning has become more and more important for OBC data acquisition quality.We analyze in this paper the advantage and disadvantage of the acoustic secondary positioning method and the first breaking secondary positioning method.Based on these traditional secondary positioning methods,we present a new first breaking secondary positioning method named scanning-fitting method.This method determines secondary positioning coordinates of sensors by scanning grids,fitting curved surface and solving the extreme value of the curved surface.The application to real data shows that this new method has the advantages of high efficiency and high accuracy.
关键词
OBC勘探 /
二次定位 /
初至波 /
拟曲面合
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Key words
OBC surve /
secondary positioning /
first break /
fitting curved surface
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肖永新, 杨海申, 蒋先艺, 姜绍辉, 宋卫锋, 郭武, 刘丽.
OBC勘探中扫描拟合二次定位方法[J]. 石油地球物理勘探, 2012, 47(3): 366-370
Xiao Yongxin, Yang Haishen, Jiang Xianyi, Jiang Shaohui, Song Weifeng, Guo Wu, Liu Li.
A secondary positioning method by grid scanning and curved-surface fitting in OBC survey[J]. Oil Geophysical Prospecting, 2012, 47(3): 366-370
中图分类号:
P631
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参考文献
[1] 韩立强,常稳.海底电缆初至波_次定位技术的应用.石油物探,2003,42(4);501-504Han Liqiang, Chang Wen. Application of first breaksecond positioning technique in OBC. GPP,2003,42(4):501-504
[2] 曾湘轶,杨文艳.浅析海底电缆地震采集作业_次定位系统.石油地球物理勘探,2001,36(2);220-226Gcng Xiangyi,Yang Wenyan. Brief analysis of second-ary positioning system in seismic sec-bottom cable ac-qwsW on.OGP,2001,36(2);220-226
[3] 杨京涛,朱伟强,秦豹.海上_次定位技术的研究与应用.石油物探,2002,41(增刊):67-69Yang Jingtao,Zhu Wciqiang, Qin Bao. Research andapplication of secondary positioning technique in seaexploration. GPP,2002,41(Sup):67-69
[4] 张振宇.折射波法检波器_次定位.西南石油学院学报,2005,27(2):22-24Zhang Zhenyu. The receiver secondary location usingrefraction wave method. Journal of Southwest,Petro-leum Institute,2005,27(2):22-24
[5] 倪成洲,全海燕等.-种高精度初至波_次定位新方法—搜索法.石油地球物理勘探,2008,43(2);131-133,157Ni Chcngzhou,Quan Haiyan. .A new method for highprecision first break secondary positioning; Searchmethod.OGP,2008,43(2):131-133,157
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