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  • 建个时时彩平台多少钱?:Subsalt Imaging

    后一万能码 2期内中 www.qgqx.net Truly broadband data bring high resolution and layer differentiation. The reduced sidelobes create sharper wavelets for greater clarity. The six octaves of data recorded by BroadSeisTM provide high resolution shallow data as well as low frequencies for subsalt penetration. In order to achieve sufficient bandwidth in areas where high frequencies are limited, it is necessary to extend the low frequencies. Lower frequencies are affected less by attenuation, and provide greater accuracy and stability for seismic inversion.

    Brazil - Santos Basin

    Toggle to compare: Conventional Conventional with GWE BroadSeis

    In this example from the fast track PSDM processing from CGG's Santos Basin multi-client data, the broad bandwidth from BroadSeis provides improved pre-salt imaging over conventional surveys, even with GWE deghosting.

    Conventional marine streamer acquisition lacks sufficient signal-to-noise ratio in the 2-7 Hz bandwidth due to streamer depth, streamer tow noise, source array configuration, source depth and source bubble. Using BroadSeis we routinely record frequencies down to 2.5 Hz, providing three octaves of data below 20 Hz.

    Good signal-to-noise ratio data at low frequency need to be recorded, Deghosting techniques that only boost the low frequencies will not provide the same strength of signal as truly broadband data that have been recorded. Due to the proprietary curved shape of BroadSeis streamers, the average tow depth is significantly deeper than that of other acquisition geometries, which increases the signal-to-noise both by being below the swell and due to the steeper slope of the receiver ghost notch. In addition, Sentinel solid streamers are renowned for their low-noise properties, especially at low frequencies, and have been shown to be 10-15 dB quieter at 5 Hz than gel streamers in vibration tank tests.

    Gulf of Mexico

    GoM salt flood 20 Hz Salt Flood RTM showing improved illumination of the subsalt.

    Angola BroadSeis

    Offshore West Africa - Angola

    We see the same improvements in data quality on the Eastern side of the Atlantic. In this example from our multi-client data in Block 21 there is clear imaging of the base salt and pre-salt structures as well as fine definition of the post-salt.

    In addition to extending the low frequencies subsalt imaging is often enhanced by acquiring long offsets and increasing the range of azimuths. The improved sampling enhances illumination as well as improving noise and multiple attenuation.

    Improve Pre-Salt Imaging with Variable-Depth ...

    Thomas Rebert | Ronan Sablon | Nicolas Vidal | Pierre Charri...
    ?2012 SEG

    Broadband, long-offset, full-azimuth, stagger...

    Fabrice Mandroux | Beng Ong | Chu-Ong Ting | Sabaresan Mothi...
    ?2013 EAGE

    Staggered marine acquisition design for compl...

    Fabrice Mandroux | Chu-ong Ting | Bob Montgomery | Alexandre...
    ?2013 SEG
    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 - Low Frequency Recording

    Ultra-Low Frequency Recording

    See below salt and basalt. Build better reservoir models. Record useful data down to 2.5 Hz with Sentinel.
    Multi-Client Data - Gabon

    Gabon

    Over 25,000km2 PSDM seismic data available as part of a complete geoscience package including regional geological analysis in this prospective area.
    Offshore - BroadSeis

    BroadSeis

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

    Offshore - BroadSeis Interp

    BroadSeis Interpretation

    Confident interpretation from clear differentiation between sedimentary packages and better facies discrimination with the ultra-low frequencies delivered by BroadSeis.
    Multi-Client Data - Brazil Presalt

    Brazil Pre-Salt

    Extensive modern BroadSeis pre-salt library offshore Brazil, including Santos and Campos Basins. Assess your options. Make informed decisions.
    Offshore (Marine)

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  • 证监会李钢:将直接融资等同于IPO是误解 2019-07-17
  • 里皮麾下的国足能走多远? 2019-07-17
  • 美帝拉拢人民,才能反对共产党。 2019-07-14
  • 习近平为传统文化“代言” 2019-07-14
  • 青海:52个客运站卫生间将全面改造 2019-07-13
  • 泼皮无赖风水神,尔等猪脑子是从哪里推断————“腐败分子是天上掉下来的吗?”——这是四两千斤向第十阶层发问。 2019-07-13
  • 第二届未来汽车大会暨日照新能源汽车人才与产业峰会在日照举办 2019-07-11
  • 祝湖州市少年儿童节日快乐 2019-07-06
  • 他们可以把收废品、快递、环卫、物业等等组织起来“抢单”······ 2019-06-26
  • 北极海冰出现异常快速消融:我国或遭受更频繁极端天气 2019-06-26
  • 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
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