• 湖州市残疾人联合会第七次代表大会开幕 2019-04-25
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  • 2008年全球金融危机之后,为什么金融危机发源地的美国,欧债危机重灾区的欧洲各国股市连续7年走牛,屡创历史新高,唯经济最好的中国股市却连续7年熊冠全球?去年中国 2018-11-17
  • 河北11选五开奖多少钱:Deghosting

    后一万能码 2期内中 www.qgqx.net The source and receiver ghosts created in marine acquisition form a secondary wavefield that corrupts the recorded data, and whose appearance depends on offset, time and geologic dip.

    There are three different processing stages where this secondary wavefield can be dealt with. The best approach to use can vary from project to project. The most common route is to remove the ghost pre-stack using Ghost Wavefield Elimination (GWE). If needed, we can instead deghost as part of the migration process or remove the ghost post-migration via mirror migration and joint deconvolution.

    Conventional Broadband

    Slide to compare

    Ghost Wavefield Elimination (GWE)

    • Upgrade conventional legacy data to the appearance of broadband data to aid matching.
    • Broaden the bandwidth to provide sharper wavelets and improve visibility of impedance contrasts for enhanced interpretation.
    • Compensate for ghosts present in streamer data, within the constraints of the signal-to-noise ratio at low frequencies and in the ghost notches.
    • True broadband data, such as BroadSeis, requires all frequencies to be recorded with good signal-to-noise so that all ghost notches can be properly removed.

    We provide a number of different processing algorithms and techniques for GWE, to deghost and broaden the bandwidth of all streamer data, including conventional flat and BroadSeis variable-depth. The optimal technique to use depends on the dataset and the objectives.

    3D Deghosting

    GWE is effective for most 2D and 3D data in NAZ or WAZ acquisition geometry. For FAZ data (such as those acquired by StagSeis) or reflections that exhibit strong 3D effect (e.g. diffractions), however, a full 3D deghosting method is required for broadband processing. CGG’s 3D deghosting method uses a progressive sparse Tau-Px-Py inversion to perform 3D joint deghosting and crossline interpolation in one step, thereby overcoming the issue of coarse and irregular crossline sampling.

    3D deghosting for full-azimuth and ultra-long...

    Qiaofeng Wu | Chang-Chun Lee | Wei Zhao | Ping Wang | Yunfeng Li
    ?2014 SEG

    Wave height guided multi-shot receiver deghos...

    Gordon Poole | Simon King
    ?2016 SEG

    Simultaneous source designature and receiver ...

    Gordon Poole | Simon King | James Cooper
    ??2016 EAGE
    Offshore - BroadSeis

    BroadSeis

    Broadest bandwidth, best low frequencies deliver accurate models for better decisions. Choose BroadSeis at all stages from exploration to production.

    Offshore - StagSeis

    StagSeis

    Illuminate subsalt and basalt like never before. Reduce exploration and production risk. Ultra long-offset, full-azimuth broadband for unparalleled interpretation.
    Offshore - Broadband Toolbox

    Broadband Solutions

    Flexibility is the key to a successful project. CGG offers a toolbox of broadband solutions to help you acquire the data you want.

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  • 湖州市残疾人联合会第七次代表大会开幕 2019-04-25
  • 中国资本市场开放出大招 跨境证券投资更便利 2019-04-25
  • 太坏了!傅欢遇“断子绝孙腿” 这动作红牌都不冤 2019-04-17
  • 市民工地发现并机智"抢回" 4件圆明园流散文物终"回家" 2019-04-17
  • 世界杯成中国企业营销升级大战场 2019-04-15
  • 中东部地区将有强降雨 京津冀等地有轻至中度霾 2019-04-11
  • 郑永年:新时代的清醒判断 2019-04-11
  • 让协商民主优势得以充分发挥 2019-04-10
  • 网友给太原市市长留言获回复 共计11条 2019-04-09
  • 尧都区车站街建设社区老党员高德宏同志手抄“党章”庆党生 2019-04-09
  • 正心正念 爱国爱教 佛界楷模 2019-04-02
  • 防治土地荒漠化 新疆保护生态兼顾农民增收 2019-04-02
  • 许倬云作序《现代的历程》:现代人的天问 2019-03-31
  • 证监会:首发审核政策始终没有变化 2019-03-31
  • 2008年全球金融危机之后,为什么金融危机发源地的美国,欧债危机重灾区的欧洲各国股市连续7年走牛,屡创历史新高,唯经济最好的中国股市却连续7年熊冠全球?去年中国 2018-11-17