[1]万 钧,刘莲莲,代 玲,等.宽频高分辨率处理与多次波衰减新方法在南海珠江口盆地X工区的应用[J].华南地震,2023,(03):136-144.[doi:10.13512/j.hndz.2023.03.16]
　WAN Jun,LIU Lianlian,DAI Ling,et al.Application of a New Method of Broadband High-resolution Processing and Multiple Suppression in the X Work Area of Pearl River Mouth Basin in the South China Sea[J].,2023,(03):136-144.[doi:10.13512/j.hndz.2023.03.16]
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宽频高分辨率处理与多次波衰减新方法在南海珠江口盆地X工区的应用()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年03期
页码:
136-144
栏目:
海洋地球物理
出版日期:
2023-09-20

文章信息/Info

Title:
Application of a New Method of Broadband High-resolution Processing and Multiple Suppression in the X Work Area of Pearl River Mouth Basin in the South China Sea
文章编号:
1001-8662（2023）03-0136-09
作者:
万 钧1; 刘莲莲2; 代 玲1; 周 卿2; 罗 泽1; 王改革2; 崔 杰2
1.中海石油（中国）有限公司深圳分公司，深圳 518000;2.斯伦贝谢科技服务（北京）有限公司，北京 100020
Author(s):
WAN Jun1; LIU Lianlian2; DAI Ling1; ZHOU Qing2; LUO Ze1; WANG Gaige2; CUI Jie2
1.Shenzhen Branch of CNOOC China Limited ， Shenzhen 518000， China;2.Schlumberger Technology Services（Beijing）Co.， Ltd.， Beijing 100020， China
关键词:
宽频处理; 确定性水层多次波压制; 广义表层多次波预测; 多次波压制
Keywords:
Broadband processing;  Deterministic water-layer suppression;  General surface multiple prediction （GSMP）; Multiple suppression
分类号:
P631.44
DOI:
10.13512/j.hndz.2023.03.16
文献标志码:
A
摘要:
南海珠江口盆地是我国重要的油气资源产区，该产区的浅海区域内多次波发育严重。文中以信号预处理得到的高信噪比数据为基础，测试了一套宽频提高分辨率及多次波衰减的处理思路。在宽频高分辨率处理方面，通过应用自适应鬼波压制技术结合成像域保幅性BWXT拓频技术得到高分辨率数据体。针对浅海自由表面多次波，在数据域采用确定性水层多次波预测技术与广义表层多次波预测技术进行联合压制，结果显示该两种方法的组合使用能有效压制该区域内的水面相关多次波。通过对各技术方法处理前后的道集、频谱、叠前时间偏移剖面的质控分析可以发现，该处理流程在珠江口盆地X工区的地震资料处理中有很好的应用效果，多次波得到有效衰减。最终生成的宽频高分辨率地震数据为后期高精度储层预测及地质研究工作奠定了坚实的基础。且文中提出的处理思路对浅海海洋资料高分辨率处理具有很强的适用性，可推广应用于类似海洋环境的数据处理中。
Abstract:
The Pearl River Mouth Basin in the South China Sea is an important oil and gas producing area in China. Multiple suppression is seriously developed in the shallow sea area of this production area. Based on the high signal-to-noise ratio data obtained by signal preprocessing stage， a set of processing ideas for broadband resolution improvement and multiple suppression are tested in this paper. In the aspect of broadband high-resolution processing， high-resolution data is obtained by applying adaptive ghost wave suppression technology combined with amplitude-preserving BWXT bandwidth extension technology in the imaging domain. For free surface multiples in shallow sea， deterministic water-layer multiple prediction technology and general surface multiple prediction technology are used in the data domain for joint multiple suppression. The results show that the combination of these two methods can effectively suppress the surface related multiples in this area. Through the quality control analysis of gathers， spectra， and pre-stack time migration profiles before and after the processing of each technical method，it can be found that this processing flow has achieved good results in the seismic data processing of the X work area of the Pearl River Mouth Basin， and multiples have been effectively attenuated. The finally generated broadband high-resolution seismic data laid a solid foundation for later high-precision reservoir prediction and geological research. Moreover， the processing idea proposed in this paper has strong applicability to high-resolution processing of shallow sea marine data， and can be applied to the data processing of similar marine environment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2022-09-09
作者简介：万钧（1984-），男，高级工程师，主要从事油田储量评价及开发地质工作。E-mail：WanJun2@cnooc.com.cn
更新日期/Last Update: 2023-09-20