| 南海南部深水区低品质地震资料处理关键技术 |
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| 引用本文： | 张治忠,谢岚,陈华,覃殿明,何秋寒,赵明,常坤.南海南部深水区低品质地震资料处理关键技术[J].物探与化探,2019(3):576-583. |
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| 作者姓名： | 张治忠 谢岚 陈华 覃殿明 何秋寒 赵明 常坤 |
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| 作者单位： | 中海油田服务股份有限公司湛江分公司;中海油田服务股份有限公司油田技术事业部资料解释中心;中海石油(中国)有限公司湛江分公司 |
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| 基金项目： | 中国海洋石油总公司科技项目"莺歌海中深层气藏高分辨率储层预测应用研究"(CNOOC-KJ135KJXMNFGJ2017-06) |
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| 摘 要： | 中国南海南部深水区勘探前景广阔,但地震资料极其稀少且品质低。针对中国南海南部深水某区块原始地震资料采集于20世纪70年代、无导航文本、海底记录时间不确定、缺道严重及电缆短的品质限制,造成该区仅有的纸质成果剖面上多次波严重、信噪比低、地层构造形态模糊问题,探索出一套适合于工区地震资料处理的关键技术:采用导航重构技术解决无导航文本问题;采用自相关海底拾取技术解决海底记录不确定问题;采用限频F-K域插值技术解决缺道问题;采用组合法压制多次波技术解决因电缆短多次波难压制问题。最后处理效果表明关键技术的应用使该区地震资料处理取得了预期效果。这些技术成果不仅为我国南海南部深水的油气勘探提供较可靠的地震资料,同时为类似低品质地震资料的处理提供了可借鉴的思路和技术。
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| 关 键 词： | 南海 深水勘探 低品质地震资料 导航 插值 |
The key technologies for the processing of low-quality deepwater block seismic data in southern South China Sea |
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| ZHANG Zhi-Zhong,XIE Lan,CHEN Hua,QIN Dian-Min,HE Qiu-Han,ZHAO Min,CHANG Kun.The key technologies for the processing of low-quality deepwater block seismic data in southern South China Sea[J].Geophysical and Geochemical Exploration,2019(3):576-583. |
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| Authors: | ZHANG Zhi-Zhong XIE Lan CHEN Hua QIN Dian-Min HE Qiu-Han ZHAO Min CHANG Kun |
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| Institution: | (Zhanjiang Branch,China Oilfield Services Co.,Ltd.,Zhanjiang 524057,China;China Oilfield Services Limited Well Tech. Data Processing & Interpretation Center Dept.,Yanjiao 056001,China;Zhanjiang Branch,CNOOC Ltd.,Zhanjiang 524057,China) |
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| Abstract: | The prospect of exploration in southern South China Sea is widest,but the seismic data are very rare and the quality is low.The deepwater block seismic data in southern South China Sea are constrained by low quality seismic data acquired in the 1970s,characterized by no navigation text,time uncertainty of record about seabed,serious lack of traces and very short cable,which results in unique seismic processing results with serious multiples,low signal-to-noise ratio and illegibility of stratigraphic structure record on paper.To solve these problems,the authors use and develop a set of key technologies that are suitable for seismic data processing in this area,such as using navigation reconstruction technique to solve the problem of lack of navigation text,using self-correlation technique to solve the problem of seabed records uncertainty,using the frequency limited F-K domain interpolation technique to solve the problem of lack of traces,using combination multiples suppression technique to solve the problem of multiples suppression caused by short cable.The final results show that the applications of key technologies make the seismic data achieve expected effect in this area.These technological achievements not only provide reliable seismic data for deepwater oil and gas exploration in southern South China Sea but also provide some ideas and techniques for similar low-quality seismic data processing. |
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| Keywords: | South China Sea deepwater exploration low-quality seismic data navigation processing trace interpolation |
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