[1]易 浩,肖张波,张志伟,等.曲波域并联减多次波压制技术在陆丰凹陷的应用[J].华南地震,2024,(02):110-117.[doi:10.13512/j.hndz.2024.02.13]
 YI Hao,XIAO Zhangbo,ZHANG Zhiwei,et al.Application of Parallel Multiple Attenuation Technology in Curvelet Domain in Lufeng Depression[J].,2024,(02):110-117.[doi:10.13512/j.hndz.2024.02.13]
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曲波域并联减多次波压制技术在陆丰凹陷的应用()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年02期
页码:
110-117
栏目:
海洋地球物理
出版日期:
2024-06-30

文章信息/Info

Title:
Application of Parallel Multiple Attenuation Technology in Curvelet Domain in Lufeng Depression
文章编号:
1001-8662(2024)02-0110-08
作者:
易 浩12肖张波12张志伟12张 明12赵 越12
1.中海石油(中国)有限公司深圳分公司,深圳 518054;2.中海石油深海开发有限公司,深圳 518054
Author(s):
YI Hao12XIAO Zhangbo12ZHANG Zhiwei12ZHANG Ming12ZHAO Yue12
1.CNOOC China Ltd._Shenzhen, Shenzhen 518054, China;2.CNOOC Deepwater Development Limited , Shenzhen 518054, China
关键词:
陆丰凹陷多次波曲波域自由表面
Keywords:
Lufeng SagMultiple wavesCurvelet domainFree surface
分类号:
P631.4
DOI:
10.13512/j.hndz.2024.02.13
文献标志码:
A
摘要:
陆丰凹陷海水深度200~400m,地震资料受自由表面、海底及灰岩强界面影响,多次波极为发育,造成弱有效反射被强多次波完全覆盖,严重影响古近系内幕成像。体现复杂构造—地层圈闭难以落实、断裂交切关系难以厘定、沉积储层形态不清晰,进而影响洼陷结构研究、构造岩性圈闭评价以及储层研究。为解决这一难题,采用DWD与GSMP曲波域并联减多次波压制技术压制与自由面、海底及灰岩相关多次波,通过与时间域其他方法的对比,该方法具有较好保真性:在保持有效反射信息不损伤的前提下可以最大限度的压制近中道多次波,较好地改善道集质量,降低了近道多次对偏移剖面的影响,取得很好的成像效果,满足资料使用需求。
Abstract:
The depth of sea water in Lufeng Depression is 200-400 m. As the seismic data are affected by the free surface, seabed, and strong interface of limestone, multiple waves are extremely developed. As a result, the weak effective reflection is covered by strong multiple waves, seriously affecting the imaging of the Paleogene interior. Consequently, it is a challenge to define the complex structural-stratigraphic trap, determine the fault intersection relationship, and define the shape of the sedimentary reservoir, which affects the study of the depression structure, the evaluation of structural lithologic trap, and the study of the reservoir. To solve this problem, this paper applied DWD and GSMP parallel multiple attenuation method in the curvelet domain to suppress multiple waves related to free surface,seabed,and limestone. Compared with other methods in the time domain, this method has good authenticity: It can suppress near-middle track multiple waves to the maximum extent without damaging effective reflection information and better improve the quality of gathers. In addition,the method reduces the effect of multiple near track on migration profile and achieves a good imaging effect, which meets the requirements of data use.

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备注/Memo

备注/Memo:
收稿日期:2024-01-18
基金项目:“十四五”国家科技重大项目(KJGG2022-0403)
作者简介:易浩(1987-),男,工程师,主要从事地震资料处理及综合解释工作。E-mail:yihao2@cnooc.com.cn
更新日期/Last Update: 2024-06-30