Abstract
Multiple reflections are typically not accounted for in seismic migration processes, which can lead to the emergence of artifacts. In Marchenko imaging, we retrieve the complete up- and downgoing wavefields in the subsurface to construct an image without such artifacts. The quality of this image depends on the type of imaging condition that is applied. In this work, we introduce an imaging condition that is based on stabilized unidimensional deconvolution (SUD). Two specific approaches are considered. In the first approach, we use the full up- and downgoing wavefields for deconvolution. Although this leads to balanced and relatively accurate amplitudes, the crosstalk is not completely removed. The second one is to incorporate the initial focusing function in the deconvolution process, in such a way that the retrieval of crosstalk is avoided. We compare images with the results of the classical cross-correlation imaging condition, which we apply to reverse-time migrated wavefields and to the up- and downgoing wavefields that are retrieved by the Marchenko method
Original language | English |
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Title of host publication | SEG Technical Program Expanded Abstracts 2018 |
Subtitle of host publication | 14-19 October 2018, Anaheim, United States |
Pages | 4433-4437 |
DOIs | |
Publication status | Published - 2018 |
Event | SEG Annual Meeting 2018 - Anaheim convention Center, Anaheim, United States Duration: 14 Oct 2018 → 19 Oct 2018 Conference number: 88 https://seg.org/Annual-Meeting-2018 |
Publication series
Name | SEG Technical Program Expanded Abstracts 2018 |
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Publisher | SEG |
ISSN (Electronic) | 1949-4645 |
Other
Other | SEG Annual Meeting 2018 |
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Abbreviated title | SEG 2018 |
Country/Territory | United States |
City | Anaheim |
Period | 14/10/18 → 19/10/18 |
Internet address |
Keywords
- imaging
- internal multiples
- autofocusing