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Near surface solutions in South Rub Al-Khali,Saudi Arabia applying seismic-gravity joint inversion and redatuming

机译:应用地震重力联合反演和重新标定,沙特阿拉伯南鲁卜哈利的近地表解决方案

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摘要

C omplex near surface conditions adversely affect explo-ration in the Middle East and elsewhere in the formof distortions and lack of continuity introduced inthe seismic data. Improvements in the capability ofestimating the complex velocity distribution in the near surfaceare of fundamental importance in order to address some ofthe major problems affecting land seismic imaging. Seismicfirst-break analysis in the form of refraction or tomographicinversions (either layer or grid based) is often insufficient toresolve complex velocity patterns such as velocity inversionsand low velocity features. For this reason, the use of non-seismic geophysical methods optimally integrated with seismicprovides an extended capability for describing the structure ofcomplex shallow geology as also suggested by previous studieson seismic-gravity integration (Opfer et al., 1989; Opfer, 2003).Simultaneous joint inversion (JI) of the seismic and gravityresiduals offer in this sense an elegant and analytical approachto geophysical data integration suitable to be applied to largevolumes of data in a production data processing environment.
机译:复杂的地表附近条件以地震数据中引入的扭曲和缺乏连续性的形式,不利地影响了中东和其他地区的勘探。为了解决影响陆地地震成像的一些主要问题,提高估计近地表复杂速度分布的能力至关重要。折射或层析成像反演(基于层或网格)形式的地震初断分析通常不足以解析复杂的速度模式,例如速度反演和低速特征。因此,与地震最佳结合的非地震地球物理方法的使用为描述复杂浅层地质结构提供了扩展的能力,如先前关于地震重力整合的研究(Opfer et al。,1989; Opfer,2003)所建议的那样。在这种意义上,地震和重力残差的联合反演(JI)提供了一种优雅的分析方法来进行地球物理数据集成,适用于生产数据处理环境中的大量数据。

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