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首页> 外文期刊>Geophysics: Journal of the Society of Exploration Geophysicists >A practical implementation of subsalt Marchenko imaging with a Gulf of Mexico data setSubsalt marchenko imaging: GOM example
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A practical implementation of subsalt Marchenko imaging with a Gulf of Mexico data setSubsalt marchenko imaging: GOM example

机译：与墨西哥湾数据Setabsalt Marchenko成像的实际实施Subsalt Marchenko成像：GOM示例

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Marchenko redatuming allows one to use surface seismic reflection data to generate the seismic response from sources at the surface to any point in the subsurface. Without requiring much information about the earth’s properties, the seismic response generated by Marchenko redatuming contains accurate estimates of not only the primaries but also the internal multiples. A target-oriented imaging method, referred to as Marchenko imaging, was implemented for imaging complex structures of the earth using the seismic response obtained through Marchenko redatuming. Taking account of the contribution of primaries and internal multiples, Marchenko imaging produces images that contain fewer artifacts than the images obtained using conventional imaging methods (e.g., reverse time migration) with the same input data. In this study, we applied Marchenko imaging to a field data set acquired at the Gulf of Mexico to produce an image of a subsalt area. We investigated two important and practical aspects of the Marchenko framework: (1)?the missing near offsets in marine shot records and (2)?the calibration of the reflection data. Finally, we suggested a workflow for processing the marine towed-streamer field data set acquired at the Gulf of Mexico, and we have developed a complete theoretical and practical framework to produce a target-oriented subsalt image using the Marchenko methods. The images obtained from Marchenko imaging are consistent and comparable, for the most part, with conventional migration methods. However, Marchenko imaging achieves improvements in the continuity of the geologic structures and in suppressing the artifacts that are caused by internal multiples.
机译：Marchenko Redatuming允许人们使用表面地震反射数据来产生从表面的表面处的源响应到地下的任何点。在不需要大量关于地球性质的信息的情况下，由Marchenko RedaTuming产生的地震反应包含不仅是初学的准确估计，而且还包含内部倍数。通过通过通过Marchenko RedaTuming获得的地震反应来实现针对Marchenko成像的目标导向成像方法，用于对地球的成像组成结构。考虑到初学者和内部倍数的贡献，Marchenko成像产生了与使用具有相同输入数据的传统成像方法（例如，相反时间迁移）获得的图像的图像。在这项研究中，我们将Marchenko成像应用于在墨西哥湾获取的现场数据集，以产生大小区域的图像。我们调查了Marchenko框架的两个重要和实际方面：（1）？海洋射击记录和（2）的偏移附近缺失？校准反射数据。最后，我们建议加工在墨西哥湾获取的海洋拖车场数据集的工作流程，我们开发了一种完整的理论和实用框架，用于使用Marchenko方法生产面向目标的Subsalt图像。从Marchenko成像获得的图像在大多数情况下，具有常规迁移方法的一致性和可比性。然而，Marchenko成像实现了地质结构的连续性的改进，并抑制了由内部倍数引起的伪像。

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