Comparative study of receiver-side ghost wavefield attenuation on different marine acquisition configurations

doi:10.1088/1742-2140/aa93b3

	Comparative study of receiver-side ghost wavefield attenuation on different marine acquisition configurations
	Zhang,Hao 1; Liu,Qiancheng 2; Li,Hongyuan 3; Zhang,Yi 4
刊名	Journal of Geophysics and Engineering
	2018-02-13
卷号	15 期号:2
关键词	ghost wavefield attenuation variable-depth streamer acquisition broadband processing frequency response
ISSN号	1742-2132
DOI	10.1088/1742-2140/aa93b3
英文摘要	Abstract In marine seismic exploration, the ghost energies (down-going waves), which arise from the reflection at the surface, are often treated as unwanted signals for data processing. The ghost wave fields interfere with the desired primary signals, leads to frequency notches and attenuation of low frequencies, which in turn downgrade the resolution of the recorded seismic data. There are two main categories of methods to solve the ghost or the so-called notch problem: the non-conventional acquisition configuration-based technique and a deghosting algorithm-based solution. The variable-depth streamer (VDS) acquisition solution is one of the most representative methods in the first category, which has become a popular solution for marine seismic acquisition to obtain broad data bandwidth. However, this approach is not as economic as the conventional constant depth streamer (CDS) acquisition, due to the precise control of the towing streamer. In addition, there are large quantities of conventionally-towed legacy data stored in the data library. Applying receiver deghosting to the CDS data thus becomes a more economical method. In theory, both types of data after deghosting should have the same bandwidth and S/N ratio, but in reality they are different. In this paper, we conduct a comparative study and evaluation to apply receiver deghosting to a set of real 2D marine data including both types of acquisition (CDS and VDS) corresponding to the same geology. The deghosting algorithm we employed is a self-sustained, inversion-based approach operated in the τ–p domain. This evaluation can help us to understand two questions: whether the VDS acquisition has more broadband characteristics compared to conventional CDS acquisition after deghosting, and whether we can achieve the identical or similar data quality (e.g., S/N ratio) through the proper deghosting algorithm for both types of data. The comparative results are illustrated and discussed.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:1742-2132-15-2-AA93B3
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64210]
专题	中国科学院地质与地球物理研究所
作者单位	1.Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, People’s Republic of China 2.University College London, London WC1E6BT, United Kingdom 3.Acquisition Technical Support Department, BGP, China National Petroleum Corporation, Zhuozhou 072500, Hebei, People’s Republic of China 4.Zhanjiang Brand of CNOOC Ltd, CNOOC, Zhanjiang 524057, Guangdong, People’s Republic of China
推荐引用方式 GB/T 7714	Zhang,Hao,Liu,Qiancheng,Li,Hongyuan,et al. Comparative study of receiver-side ghost wavefield attenuation on different marine acquisition configurations[J]. Journal of Geophysics and Engineering,2018,15(2).
APA	Zhang,Hao,Liu,Qiancheng,Li,Hongyuan,&Zhang,Yi.(2018).Comparative study of receiver-side ghost wavefield attenuation on different marine acquisition configurations.Journal of Geophysics and Engineering,15(2).
MLA	Zhang,Hao,et al."Comparative study of receiver-side ghost wavefield attenuation on different marine acquisition configurations".Journal of Geophysics and Engineering 15.2(2018).