|本期目录/Table of Contents|

[1]周家雄 马光克 隋 波 徐 伟 赵昌垒 李 蓉.基于Curvelet域多分量阈值控制的OBC垂直分量横波噪声压制方法[J].中国海上油气,2020,32(03):51-58.[doi:10.11935/j.issn.1673-1506.2020.03.006]
 ZHOU Jiaxiong MA Guangke SUI Bo XU Wei ZHAO Changlei LI Rong.Shear wave noise suppression method on OBC vertical component based on multi-component threshold control in Curvelet domain[J].China Offshore Oil and Gas,2020,32(03):51-58.[doi:10.11935/j.issn.1673-1506.2020.03.006]
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基于Curvelet域多分量阈值控制的OBC垂直分量横波噪声压制方法()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年03期
页码:
51-58
栏目:
油气勘探(南海西部海域勘探成果专辑)
出版日期:
2020-05-25

文章信息/Info

Title:
Shear wave noise suppression method on OBC vertical component based on multi-component threshold control in Curvelet domain
文章编号:
1673-1506(2020)03-0051-08
作者:
周家雄1 马光克1 隋 波1 徐 伟1 赵昌垒2 李 蓉2
(1. 中海石油(中国)有限公司湛江分公司 广东湛江 524057; 2. 斯伦贝谢科技服务(北京)有限公司 北京 100014)
Author(s):
ZHOU Jiaxiong1 MA Guangke1 SUI Bo1 XU Wei1 ZHAO Changlei2 LI Rong2
(1. CNOOC China Limited, Zhanjiang Branch, Zhanjiang, Guangdong 524057, China; 2. Schlumberger China, Beijing 100014, China)
关键词:
Curvelet域 多分量阈值控制 OBC垂直分量 横波噪声压制 自适应匹配 乌石凹陷
Keywords:
Curvelet domain multi-component threshold control OBC vertical component shear wave noise suppression adaptive matching Wushi sag
分类号:
TE132.1+4
DOI:
10.11935/j.issn.1673-1506.2020.03.006
文献标志码:
A
摘要:
对于浅水区OBC水陆双检合并,最大的难点在于陆检上强能量的横波噪声压制,单一利用纵、横波速度和频率差异很难进行有效压制,特别是近偏移距的横波噪声会有大量残留。本文提出了一种新的横波噪声压制方法,将多分量检波器采集到的水平分量中记录的横波作为原始的横波模型,在Curvelet域用阈值控制方法将水平分量中的部分纵波进行剔除,然后与原始垂直分量进行自适应匹配而得到预测的横波模型,最后从垂直分量中将其减去,从而达到横波噪声压制的效果。该方法应用于北部湾盆地乌石凹陷A工区,取得了较好的垂直分量横波噪声压制效果,同时将其与水检进行标定及合并也取得了良好的鬼波压制效果
Abstract:
High-energy shear wave noise suppression on vertical component is the most difficult with respect to the PZ summation of OBC processing in shallow water area. The noise is difficult to be suppressed effectively by simply using the difference of P-S wave velocity and frequency. Especially there is much residual noise in near offset shear wave. In this paper, one new method for shear wave noise supression is proposed. Firstly, the shear wave recorded in horizontal components gathered from multi-component receivers acts as primary shear wave model, and part of compressed wave in the horizontal component is removed by the method of threshold control in the Curvelet domain. Then predicted shear wave model is generated by adaptive matching of primary vertical components. Finally, the shear wave noise is suppressed by the removal from vertical components. This method is applied in the A work area of the Wushi sag in the Beibuwan basin. The result of shear wave removal on vertical component is obvious, and further PZ calibration and PZ sum deghosting process also obtained good result

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备注/Memo

备注/Memo:
收稿日期:2019-11-10 改回日期:2020-04-16“十三五”国家科技重大专项课题“南海西部海域低渗油藏勘探开发关键技术(编号:2016ZX05024-006)”部分研究成果。 第一作者简介: 周家雄,男,教授级高级工程师,主要从事油气田勘探、开发储层预测等研究。地址:广东省湛江市坡头区南调路档案楼5楼(邮编:524057)。E-mail:zhoujiax@cnooc.com.cn。
更新日期/Last Update: 2020-05-30