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1A Deghosting Method Based on Source Wavelet Processing

CHEN Baoshu,TAO Jie,LI Songkang,WANG Xiaojiang,TONG Zhongfei,ZHANG Lianqun

Ghost wave interference problem always existing in marine seismic exploration has not been fundamentally resolved for a long time, which restricts the seismic exploration technology progress seriously.Most deghosting methods can only suppress cable ghost wave, and don''t have a very good suppression effect for source ghost wave.In this paper, a deghosting method based on deterministic wavelet processing is developed.First of all, the far field wavelet is got and used to create three kinds of wavelets and the match operators among the wavelets are calculated and applied on the real seismic data to suppress ghost wave.The simulation results show that this method can effectively suppress both cable ghost wave and source ghost wave, even with the effect of seismic attenuation this method can also obtain good results.The application of this method on real seismic data shows that with the deghosting method the wave group characteristics of seismic profile are clear and reflection events are single, which are helpful for structure interpretation.Meanwhile, frequency spectrum of seismic data is broad, the high and low frequency energy is rich, and there is no obvious notch frequency, which are helpful for reservoir inversion.

2017China Offshore Oil and Gas引用：11

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2The Application of a Wavelet Processing Deghosting Method in Deepwater Explorations

Tao Jie,Chen Baoshu,Li Songkang,Wang Xiaojiang

PreviousNext No AccessSPG/SEG 2016 International Geophysical Conference, Beijing, China, 20-22 April 2016The application of a wavelet processing deghosting method in deepwater explorationsAuthors: Tao JieChen BaoshuLi SongkangWang XiaojiangTao JieCNOOC Research InstituteSearch for more papers by this author, Chen BaoshuCNOOC Research InstituteSearch for more papers by this author, Li SongkangCNOOC Research InstituteSearch for more papers by this author, and Wang XiaojiangCNOOC Research InstituteSearch for more papers by this authorhttps://doi.org/10.1190/IGCBeijing2016-218 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Ghost wave is a problem which always exists in marine seismic exploration. It has not been fundamentally resolved for a long time and restricts the seismic exploration technology progress seriously. In this paper, we develop a deghosting method based on wavelet processing. The first step is calculating the cable-ghost suppression operator and the source-ghost suppression operator by far field wavelet processing, then we apply the operators to the seismic data to suppress ghost wave. The test result of theoretical model and deepwater seismic data proves that the method is effective to suppress ghost wave; broaden the frequency spectrum; improve the quality of seismic data. Keywords: deghosting, wavelet, deepwaterPermalink: https://doi.org/10.1190/IGCBeijing2016-218FiguresReferencesRelatedDetails SPG/SEG 2016 International Geophysical Conference, Beijing, China, 20-22 April 2016ISSN (online):2159-6832Copyright: 2016 Pages: 749 publication data© 2016 Published in electronic format with permission by the Society of Exploration Geophysicists and Society of Petroleum GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 22 Apr 2016 CITATION INFORMATION Tao Jie, Chen Baoshu, Li Songkang, and Wang Xiaojiang, (2016), "The application of a wavelet processing deghosting method in deepwater explorations," SEG Global Meeting Abstracts : 716-718. https://doi.org/10.1190/IGCBeijing2016-218 Plain-Language Summary KeywordsdeghostingwaveletdeepwaterPDF DownloadLoading ...

2016SPG/SEG 2016 International Geophysical Conference, Beijing, China, 20-22 April 2016

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3Key technique research and application in relative amplitude preservation processing with high resolution for offshore seismic data

Chen Baoshu,Wang Xiaojiang,Li Songkang,Liu Junrong

The problem of amplitude preservation has not been well solved in seismic data processing because of subsurface complexity,and it is still in a stage of groping.In this paper,a set of techniques and a flow of relative amplitude preservation processing with high resolution are summarized for offshore seismic data,according to our processing practice in recent years,which has made good application results in offshore hydrocarbon exploration.

2008China Offshore Oil and Gas（2008）引用：8

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4海上地震数据相对保幅处理关键技术应用

陈宝书,汪小将,李松康,刘军荣

目前针对构造成像处理的常规处理技术己经比较成熟。相对保幅处理技术由于地下情况的复杂性,一直未能得到很好地解决,目前还处在摸索阶段;国内已有不少处理人员在相对保幅处理方面做了很多有益的尝试,取得了不错的效果;通过近几年处理工作实践,总结了一套相对保幅处理思路和流程,在海上石油勘探中取得了很好的应用效果。

2007Natural Gas Industry（2007）引用：4

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5Orientation correction for horizontal components in marine multi-component seismic exploration

傅旦丹,刘一峰,温书亮,李维新,李文倚, 沈丽丽,陈宝书,李松康

在海上多分量地震勘探中,会不可避免地涉及到水平分量检波器的方位确定及其旋转校正问题.特别是当多分量数据采集采用绕圈悬挂式海底电缆系统进行作业时,水平分量检波器的方位校正就显得非常关键和重要.针对最复杂的海上多分量地震勘探情况,探讨了水平分量检波器随机任意取向情况下的方位校正问题,并用三维理论模型记录和实际的海上三维多分量地震数据进行了试算,获得了很好的校正结果.

2003GEOPHYSICAL PROSPECTING FOR PETROLEUM（2003）引用：5

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6APPLICATION OF SEISMIC PRESTACK MIGRATION TECHNIQUES

陈宝书,李松康,张丽焕

叠前偏移处理技术是解决精细速度分析和复杂构造成像的有效手段之一.叠前时间偏移处理是近年来国内外地震资料常规处理的发展趋势,它可获得偏移归位后的速度场,适用于陡倾角构造和深部构造的准确成像.在渤南海区垦利11-2构造上,叠前时间偏移处理的剖面较叠后偏移处理的剖面有较大改善,构造成像质量得到提高,断面及地层不整合关系较清晰,据此得到了新的更准确的解释方案.在南黄海盆地北部凹陷应用叠前深度偏移处理技术很好地解决了逆断层的归位和下盘的准确成像.在琼东南盆地松涛36-1构造上,叠前深度偏移处理消除了由于海底崎岖造成横向速度变化所引起的下伏地层变形和不成像问题,证实了构造北倾存在,恢复了构造的真实面貌,获得了很好的地质效果,使得该构造的解释工作有了突破性的进展.采用先进的二维多测线深度域叠前偏移处理和成图技术成功地对乐东22-1构造中深层"模糊带"进行了精细速度反演,实现了深度构造图的成图,落实了乐东22-1构造中深层存在圈闭,为发现乐东22-1气田提供了准确的构造图,为勘探项目提供了坚实有力的技术支持.

2001CHINA OFFSHORE OIL AND GAS(GEOLOGY)（2001）引用：16

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