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  • 河北十一选五推荐号码:Industry Articles

    Industry Articles Banner

    后一万能码 2期内中 www.qgqx.net The benefits of CGG technologies and services are regularly featured in the industry press. Find out more by consulting our e-library of published industry articles. Narrow your search by entering at least one search criterion:

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    Integration in Exploration

    Oilfield Technology, May, 2019
    Carl Watkins | Daniel Carruthers | Pedro Martinez Duran | Simon Otto | Mark Cowgill
    ?2019 Palladian Publications Ltd

    Integrated exploration, new workflows for new challenges highlighting JumpStart Gabon, Marine Source Predictions and Encontrado reprocessing projects.

     Download (PDF, 1.7MB)

    Consolidating rock-physics classics: A practical take on granular effective medium models

    The Leading Edge, May, 2019
    Fabien Allo
    ?2019 SEG

    The paper presents a review of classic rock physics models used for clastic sedimentary rocks and how they have been combined into extended models through the introduction of a few parameters associated with a compositional or textural property of the rock. The models are used on a variety of real data sets to showcase how rock properties can be inferred from elastic properties.

     Download (PDF, 506.9KB)

    3D fault imaging using windowed Radon transforms: an example from the North Sea

    First Break, May, 2019
    Geoffrey Dorn
    ?2019 EAGE

    The interpretation of fault surfaces is key to understanding the subsurface geology represented in 3D seismic volumes. The geologic structure represented by seismic reflections can be auto-tracked in the volume. Faults, however, are imaged as discontinuities or changes in curvature in the seismic data. For many years, fault interpretation involved manually picking fault cuts on orthogonal slices through the seismic volume. These fault cuts were grouped into conceptual faults, and 3D fault surfaces were created from the fault cuts.

     Download (PDF, 930.8KB)

    Full-waveform inversion for salt: A coming of age

    The Leading Edge, March, 2019
    Ping Wang | Zhigang Zhang | Jiawei Mei | Feng Lin | Rongxin Huang
    ?2019 SEG

    Full-waveform inversion (FWI), proposed by Lailly and Tarantola in the 1980s, is considered the most promising data-driven tool to automatically build velocity models. Many successful examples have been reported using FWI to update shallow sediments, gas pockets, and mud volcanoes. However, successful applications of FWI to update salt structures had almost only been seen on synthetic data until recent progress at the Atlantis field, Gulf of Mexico (GoM). We revisited some aspects of FWI algorithms to minimize cycle-skipping and amplitude discrepancy issues and derived an FWI algorithm that is able to build complex salt velocity models. We applied this algorithm to a variety of data sets including WAZ (wide-azimuth) and FAZ (full-azimuth) streamer data as well as OBN (ocean bottom node) data with different geologic settings in order to: 1) demonstrate the effectiveness of the method for salt velocity updates, and 2) examine some fundamentals of the salt problem. We observe that in multiple cases, salt velocity models from this FWI produce subsalt images of superior quality. We demonstrate with one FAZ streamer data example in Keathley Canyon that we probably do not need very high frequency in FWI for subsalt imaging purposes. Based on this observation, we envision that sparse node for velocity (NFV) acquisition may provide appropriate data to handle large and complex salt bodies with FWI. We believe that the combination of advanced FWI algorithms and appropriate data acquisition will bring a step-change to subsalt imaging.

     Download (PDF, 1.5MB)

    Leveraging Legacy Data

    Oilfield Technology, March, 2019
    Jo Firth | Priyabrata Pradhan
    ?2019 Palladian Publications Ltd

    In recent years, there have been many rapid developments in subsurface imaging, meaning that even data sets that are only two or three years old can benefit from reprocessing. Reprocessing older data, either on its own or in combination with new data, is both practical and cost-effective as new acquisition can be expensive and time-consuming, especially in areas where there are seasonal constraints due to climate, fishing or breeding seasons. The Cornerstone Evolution project in the Central North Sea demonstrates the value achieved by reprocessing a large number of older surveys in conjunction with newer acquisition.

     Download (PDF, 1.4MB)

  • 冯翠玲:把党的声音传递给“国际大家庭” 2019-06-24
  • 经济日报多媒体数字报刊 2019-06-24
  • 红木家具日常养护之法 2019-06-24
  • 今年东盟投资峰会亮点纷呈 八场活动宣传广西旅游 2019-06-22
  • 90后听障女孩北漂学舞 王力宏为她写歌:我欣然接受我的不完美 2019-06-21
  • 习近平齐鲁之行的七个感人瞬间 2019-06-19
  • 中国雷达4.0时代相关新闻 2019-06-19
  • 2018年度大学生就业蓝皮书发布 高职就业率首次超本科生 2019-06-13
  • 汇聚正能量 讴歌新时代——关于用微电影传播核心价值观的倡议书 2019-06-13
  • eHub发布“鲁班”智能营销云 重塑智能时代的商业变革 2019-06-08
  • 海外版望海楼:“五大观念”的时代价值 2019-06-08
  • 打假还是误伤?拼多多遭遇大量商家上门维权 2019-06-08
  • 柳斌杰:加强文化担当同样是企业不可缺少的社会责任 2019-06-08
  • 人民网评:异地医保的步子还需更大一些 2019-06-05
  • 【一周反腐】保监会原主席项俊波等两名省部级干部案有进展 2019-06-03
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