摘要
近年来海上浅水区宽频地震勘探技术进展缓慢,尤其像渤海这样平均水深不超过30m的浅水海域,宽频采集难以实施,只能通过常规采集、宽频处理才有可能实现这一目的,其中鬼波及浅水多次波是制约浅水资料宽频处理的两个主要因素。针对浅水海域水平拖缆鬼波时空变剧烈难以压制的问题,研究了τ-p域自适应参数估计的水平缆鬼波压制技术;针对渤海海域海底模型难以建立、浅水多次波压制困难的问题,研究了τ-p域自适应海底模型估计的浅水多次波压制技术。渤海M工区实际数据的应用结果表明,这两项关键技术能有效拓宽地震资料的频带宽度,实现渤海海域常规水平拖缆地震资料的宽频处理。
In recent years,few progresses have been made in broadband seismic exploration technology in shallow water.Especially in shallow water area such as Bohai Sea,where the average water depth is not greater than 30 m,broadband acquisition is difficult to be implemented,and only can be realized through conventional acquisition and broadband processing.Ghost and shallow water multiple are the two main factors which restrict the broadband processing of shallow water data.In this paper,an adaptive deghosting method inτ-p domain was proposed to solving the problem of fierce time-space variation of ghost waves in shallow water.An adaptive shallow water multiple suppression method inτ-p domain was proposed to solve the problem that seabed model of Bohai Sea is difficult to be established.The application results in real seismic data in Bohai Sea demonstrated that the two key techniques proposed in this paper can broaden the frequency bandwidth of seismic data effectively,so as to realize the broadband processing of conventional plane streamer data in Bohai Sea.
作者
王艳冬
王小六
桑淑云
王建花
张金淼
翁斌
WANG Yandong;WANG Xiaoliu;SANG Shuyun;WANG Jianhua;ZHANG Jinmiao;WENG Bin(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;National Engineering Laboratory for Offshore Oil Exploration,Beijing 100028,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2020年第1期10-16,4,共8页
Oil Geophysical Prospecting
基金
“十三·五”国家科技重大专项“中国近海中深层地震勘探关键技术”(2016ZX05024-001)资助.
关键词
渤海海域
鬼波
浅水多次波
自适应估计
宽频处理
Bohai Sea
ghost wave
shallow water multiple
adaptive parameter estimation
broadband processing
作者简介
王艳冬,工程师,1986年生,2010年获中国石油大学(华东)地球物理学专业学士学位,2013年获中国石油大学(华东)固体地球物理学专业硕士学位,现就职于中海油研究总院有限责任公司,主要从事海洋地震资料处理方法及应用研究。Email:wangyd18@cnooc.com.cn
