3D Reflectivity-Guided Joint Migration Inversion of Multi-Well Borehole Data

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    3D borehole-related seismic data has superior quality and higher-frequency content compared to surface seismic data. These unique properties make it possible to produce high-resolution images and accurate velocity models especially around the borehole. However, using conventional imaging algorithms, that assume primary reflection energy, will retrieve only a limited area around the borehole. This problem can be overcome by including surface-related and internal multiples in the imaging algorithm to enhance the illumination of the. In addition, on-the-fly the velocity model can be updated using the so-called Joint Migration Inversion process, which explains the full wavefield seismic data in terms of reflectivity and a propagation velocity model. To augment the results, datasets from different wells in the area can reinforce each other by simultaneous inversion to assure the consistency and improve the quality of the results. To steer and constrain the velocity estimation, the estimated reflectivity in the JMI process can be used as additional constraint for the velocity updating process. In this paper we have deployed the full wavefield of the 3D borehole data, from two different wells, containing all orders scattering, both up- and down-going wavefields, in one integrated inversion-imaging process as proposed by the JMI methodology. The final result is a smooth accurate background velocity model along with a true amplitude reflectivity image with high resolution and maximum lateral extent.
    Original languageEnglish
    Title of host publicationProceedings of 4th EAGE Borehole Geophysics Workshop
    Number of pages5
    Publication statusPublished - 20 Nov 2017
    Event4th EAGE Borehole Geophysics Workshop : Innovation In Processing And Imaging - Abu Dhabi, United Arab Emirates
    Duration: 19 Nov 201721 Nov 2017


    Workshop4th EAGE Borehole Geophysics Workshop
    Country/TerritoryUnited Arab Emirates
    CityAbu Dhabi


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