• 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
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  • 中东部地区将有强降雨 京津冀等地有轻至中度霾 2019-04-11
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  • 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
  • 时时彩机选软件:TopSeis

    A Unique Solution for Acquiring Near Offsets

    后一万能码 2期内中 www.qgqx.net TopSeis? is a next-generation marine towed-streamer acquisition solution, delivering a step-change in imaging for shallow to intermediate depth targets by providing massively increased near-offset coverage from a split spread with zero offsets. It is the latest addition to our broadband portfolio and is the most recent outcome from over eight years of technical collaboration between CGG and Lundin Norway AS, with additional funding from the Norway Research Council. The first full scale commercial survey has recently been completed for Lundin in the Barents Sea.
    TopSeis vessels sq

    TopSeis is a tailored solution, specifically designed to improve imaging of shallow and intermediate-depth targets by overcoming the lack of near-offset fold inherent in towed-streamer seismic. TopSeis achieves this by using an innovative source-over-spread acquisition configuration and proprietary processing algorithms.

    Based on an original idea from Lundin, TopSeis has been developed over the last two years by a multi-disciplinary team of CGG and Sercel Equipment, Marine Acquisition and Geoscience experts, using synthetic data and field trials to derive optimum configurations for specific targets and to develop methods to deploy these configurations safely. It capitalizes on CGG’s long-standing broadband capabilities, including deep-tow experience from acquiring over 350,000 km2 of BroadSeis?, deployment of our broadband source (BroadSource?) and our recognized Subsurface Imaging excellence. 

    Features

    • High fold with increased near-offset coverage
    • High resolution
    • Dense crossline separation
    • Zero offsets
    • Crossline offsets
    • Full azimuth at near offsets

    Benefits

    • Enhanced imaging of shallow and intermediate reservoirs in water depths deeper than 100 m
    • Better S/N from increased fold
    • Improved AVO from increased fold and recorded zero-offset data
    • Considerably lower-cost solution than OBS
    • Anticipated better multiple attenuation from increased near-offset coverage
     
    TopSeis Offsets

    Synthetic Model AVO studies

    The significantly increased sampling of near and zero offsets delivered by TopSeis should result in improved AVO curve fitting as well as direct recording of the intercept, R0. This will increase the accuracy and reliability of the AVO results.
    Synthetic ComparisonFor a synthetic model, based on the Wisting field in the Barents Sea, and developed in collaboration with OMV, the TopSeis response to the model can be seen to deliver a much better correlation for the AVO intercept and gradient than the conventional response. The TopSeis synthetic seismic also shows much better correlation with the model, with sharper wavelets, less noise and a clearer oil water contact.

    AVO Intercept - Zero Offset Reflectivity

    Reference-Rzero-syntheticTopSeis-Rzero-synthetic

    Slide the image to see the difference.

    AVO Gradient

    Reference-gradientTopSeis-gradient

    Slide the image to see the difference.

    Field Trial

    A 15km x 3km 3D trial was carried out over the Frigg-Gamma field in the North Sea. The multi-client BroadSeis data was used as the reference. The TopSeis data shows considerable improvement over the reference data, especially where illuminated by the outer streamers only. Initial results from the proprietary commercial survey in the Barents Sea are also delivering outstanding improvements. 

    Reference-shallow-FriggTopSeis-shallow-Frigg

    Slide the image to see the difference.

    The improvement continues deeper in the section, as seen in the comparison below:
    deeper comparison

    Norway Research Council Logo

    CGG would like to acknowledge the contributions made by Lundin Norway and the Research Council of Norway in the development of TopSeis
    Lundin Norway

     

    TopSeis - shooting over the seismic spread

    Vetle Vinje | Risto Siliqi | Carl-inge Nilsen | Erik Hicks |...
    ?2017 EAGE

    Shooting over the streamer spread; a novel ap...

    Vetle Vinje (CGG) | Jan Erik Lie (Lundin Norway) | Vidar Dan...
    ?2017 EAGE

    On top of the spread

    Jo Firth | Vetle Vinje
    ?2018 Palladian Publications Ltd
    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.

    Offshore - BroadSource

    BroadSource

    A fully proven broadband source, compatible with all receiver deghosting technology for ghost-free broadband data.
    Offshore - GeoHazards

    Solutions for Geohazards

    Clear, high-resolution near-surface images to delineate the smallest structures. Over 6 octaves of data from BroadSource for shallow hazard identification.
    Multi-Client Data - Barents Sea

    Barents Sea

    See play models at different levels, from the Triassic/Jurassic, through Carboniferous/Permian to the Devonian/Carboniferous with BroadSeis data in the Barents Sea
    Offshore - Tailored Acquisition Solutions

    Tailored Acquisition Solutions

    Acquisition tailored to your geological challenges, time or budgetary constraints. Innovative spread designs and imaging solutions for complex geologies or time-limited or difficult access.
    Offshore - Assets and Technologies

    Marine Assets and Technologies

    Our high-end fleet is complemented by advanced technologies and our experienced people who go the extra mile to get to get the job done
  • 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