Marchenko imaging: Imaging with primaries, internal multiples, and free-surface multiples
نویسندگان
چکیده
منابع مشابه
Incorporating free-surface multiples in Marchenko imaging
Imagine placing a receiver at any location in the Earth and recording the response at that location to sources on the surface. In such a world, we could place receivers around our reservoir to better image the reservoir and understand its properties. Realistically, this is not a feasible approach for understanding the subsurface. Here, we present an alternative and realizable approach to obtain...
متن کاملAccounting for free-surface multiples in Marchenko imaging
Imagine placing a receiver at any location in the earth and recording the response at that location to sources on the surface. In such a world, we could place receivers around our reservoir to better image the reservoir and understand its properties. Realistically, this is not a feasible approach for understanding the subsurface. We have developed an alternative and realizable approach to obtai...
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We present an imaging method that creates a map of reflection coefficients in correct one-way time with no contamination from internal multiples using purely a filtering approach. The filter is computed from the measured reflection response and does not require a background model. We demonstrate that the filter is a focusing wavefield that focuses inside a layered medium and removes all interna...
متن کاملSubsalt imaging with internal multiples
If singly scattered seismic waves illuminate the entirety of a subsurface structure of interest, standard methods can be applied to image it. In many cases, subsalt imaging for example, a combination of restricted acquisition geometry and imperfect velocity models results in regions of the model that are not illuminated with singly scattered waves. We present an approach to use multiply scatter...
متن کاملImaging primaries and multiples simultaneously with depth-focusing
Seismic imaging amplitudes are extracted with the imaging conditions t = 0 and h = 0, where t = 0 means that the take-off time of the upward-coming wave is zero, and h = 0, with h the half-offset between the source and receiver position, means that the downwardgoing and upward-coming waves meet together during the wavefield extrapolation. However, h = 0 makes no sense for multiples imaging. Thi...
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ژورنال
عنوان ژورنال: GEOPHYSICS
سال: 2015
ISSN: 0016-8033,1942-2156
DOI: 10.1190/geo2014-0494.1