• 重磅!6月20日起 湖南启动省级环保督察 2019-10-19
  • 西安一男子伙同他人制假 将工业醋酸变身食用醋 2019-10-19
  • 合肥庐阳18小区将现“十八变” 4254户居民将受益 2019-10-16
  • 俄罗斯世界杯F组:球迷风采 2019-10-12
  • 赵艳青的专栏作者中国国家地理网 2019-10-05
  • 本赛季首次梅开二度 C罗“金球定律”如约而至 2019-10-03
  • 法制日报:别让世界杯激情冲淡守法意识 2019-09-30
  • 车俊会见毛里求斯代总统 2019-09-30
  • 回家途中遭遇车祸 受伤入院母子获捐8万元善款 2019-09-27
  • 点评:世界杯八大热门亮相完毕 西班牙巴西最有冠军相 2019-09-27
  • 实现中华民族伟大复兴—似铁齿铜牙的博客—强国博客—人民网 2019-09-24
  • 德国前国门妻子透露:比赛前和他缠绵 比赛中他失误了 2019-09-24
  • 湖州日报社党委书记、社长沈振建祝贺人民日报创刊70周年 2019-09-20
  • “亲信干政”案核心人物崔顺实一审被判20年监禁 2019-09-15
  • 生态环境部部长李干杰:坚定推动农村散煤的煤改气、煤改电 2019-09-15
  • 河北十一选五遗漏:4D Processing

    后一万能码 2期内中 www.qgqx.net Processing and imaging time-lapse datasets requires great care and attention to detail which is why our experience really makes a difference. The aim of 4D processing is to attenuate the 4D noise caused by changes in acquisition parameters or environmental conditions, and to emphasise the 4D signature of the reservoir caused by changes in fluid, pressure and stress.

    A key philosophy in 4D processing is to optimize for the 4D difference. For example with 4D demultiple, if you optimize for best multiple attenuation on each individual dataset you usually end up with a worse 4D result. We use 4D cost functions to allow a trade-off between what is best for processing and what gives the best 4D difference.

    Statics

    Static differences between vintages occur in both land and marine 4D surveys. They are caused by changes in the near-surface, weathering layer, water column or water surface conditions. Our range of strategies and algorithms include application of deterministic GPS-based tidal and waveheight corrections and statistical 4D corrections.

    Regularization

    The regularization of 4D datasets uses bin centring and interpolation of missing data to create either regularly sampled datasets on a common grid, or to map monitor survey data onto a base survey grid. Our REVIVE technique uses up to 5 dimensions to dramatically increase the interpolation accuracy.

    4D binning

    4D Binning

    4D binning is an essential step in time-lapse processing which selects the most compatible data for 4D processing. Traces are selected from all of the vintages making up the 4D dataset which are best matched in terms of source, receiver and midpoint position, offset and azimuth. The binning criteria can be extended to include statistical measurements of 4D data quality such as cross-correlation, predictability and NRMS.

    De-striping

    Systematic amplitude variations related to the acquisition geometry create a pattern or acquisition footprint. The footprint within each vintage is emphasized in the 4D difference. We use a 4D de-striping technique where data from all vintages are analyzed for systematic variations with respect to acquisition attributes, such as sail line, and scalars are calculated to compensate for them.

    Matching

    Matching is used to minimize residual 4D differences caused by acquisition and environmental variations which cannot be addressed by deterministic corrections. We have a range of sophisticated multi-vintage matching techniques to suit a wide range of 4D datasets, including the merging and 4D matching of streamer and OBC datasets.

     

    A regularization algorithm optimized for time...

    Adel Khalil | Henning Hoeber | Bernard Deschizeaux | Mark Ib...
    ??2016 EAGE

    Time-lapse full-waveform inversion as a reser...

    Erik Hicks | Henning Hoeber | Marianne Houbiers | Séverine P...
    ?2016 SEG

    Application of image consistent time-strain a...

    H. Hoeber | A. Khalil | S. De Pierrepont | Z. Dobo | H. Neal...
    ??2016 EAGE
    Offshore - 4D Solutions

    4D Solutions

    Our 4D toolbox ensures seismic repeatability via powerful integrated vessel, source and streamer steering with source signature monitoring .
    Subsurface Imaging - MWD

    MWD

    Get clearer images, more accurate velocity models and improved fault delineation. Remove unwanted multiples. Preserve data integrity.
    Subsurface Imaging - Least-Squares Migration

    Least-Squares Migration

    Least-Squares Migration provides images with better balanced illumination, improved signal-to-noise ratio, reduced migration artifacts and more interpretable seismic amplitudes.

    Subsurface Imaging

    CONTACT US


    Contact us by opening an online inquiry.

    Our Portfolio

    OUR PORTFOLIO


    View CGG's extensive portfolio of products and solutions.

    OUR PRODUCTS


    SEARCH

    EITHER... search our portfolio of innovative solutions:

    PRODUCT A-Z

    OR... browse our alphabetical directory of geoscience products and services:

  • 重磅!6月20日起 湖南启动省级环保督察 2019-10-19
  • 西安一男子伙同他人制假 将工业醋酸变身食用醋 2019-10-19
  • 合肥庐阳18小区将现“十八变” 4254户居民将受益 2019-10-16
  • 俄罗斯世界杯F组:球迷风采 2019-10-12
  • 赵艳青的专栏作者中国国家地理网 2019-10-05
  • 本赛季首次梅开二度 C罗“金球定律”如约而至 2019-10-03
  • 法制日报:别让世界杯激情冲淡守法意识 2019-09-30
  • 车俊会见毛里求斯代总统 2019-09-30
  • 回家途中遭遇车祸 受伤入院母子获捐8万元善款 2019-09-27
  • 点评:世界杯八大热门亮相完毕 西班牙巴西最有冠军相 2019-09-27
  • 实现中华民族伟大复兴—似铁齿铜牙的博客—强国博客—人民网 2019-09-24
  • 德国前国门妻子透露:比赛前和他缠绵 比赛中他失误了 2019-09-24
  • 湖州日报社党委书记、社长沈振建祝贺人民日报创刊70周年 2019-09-20
  • “亲信干政”案核心人物崔顺实一审被判20年监禁 2019-09-15
  • 生态环境部部长李干杰:坚定推动农村散煤的煤改气、煤改电 2019-09-15
  • 南方双彩网3d预测 亚洲必赢现在的网站 百乐坊娱乐 ag平台亚游官网 牛牛五小牛是什么牌 拳击训练 25选5走图势 3d开机号凤彩网 广西快3遗漏值 快乐10分任选二秘籍 顶呱刮巧克力贴吧 浙江快乐彩号码 福彩2019101期开奖号码 排列3专家预测 45111抓码王高手37337