Abstract
The Marchenko redatuming approach reconstructs wavefields at depth that contain not only primary reflections, but also multiply-scattered waves. While such fields in principle contain additional subsurface information, conventional imaging approaches cannot tap into the information encoded in internal multiples in a trivial manner. We discuss a new approach that uses the full information contained in Marchenko-redatumed fields, whose output are local reflection and transmission responses that fully enclose a target volume at depth, without contributions from over- or under-burden structures. To obtain the Target-Enclosing Extended Images (TEEIs) we solve a multi-dimensional deconvolution (MDD) problem that can be severely ill-posed, so we offer stable estimates to the MDD problem that rely on the physics of the Marchenko scheme. We validate our method on ocean-bottom field data from the North Sea. In our field data example, we show that the TEEIs can be used for reservoir-targeted imaging using reflection and, for the first time, local transmission responses, shown to be the direct by-product of using internal multiples in the redatuming scheme. Finally, we present local, TEEI-derived reflection and transmission images of the target volume at depth that are structurally consistent with a benchmark image from conventional migration of surface data.
Original language | English |
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Title of host publication | SEG Technical Program Expanded Abstracts 2017 |
Subtitle of host publication | 24-29 September, Houston, USA |
Pages | 5289-5293 |
DOIs | |
Publication status | Published - 2017 |
Event | SEG Annual Meeting 2017 - Houston, United States Duration: 24 Sept 2017 → 29 Sept 2018 Conference number: 87 |
Publication series
Name | SEG Technical Program Expanded Abstracts 2017 |
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Publisher | SEG |
ISSN (Electronic) | 1949-4645 |
Conference
Conference | SEG Annual Meeting 2017 |
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Abbreviated title | SEG 2017 |
Country/Territory | United States |
City | Houston |
Period | 24/09/17 → 29/09/18 |
Keywords
- nonlinear
- transmission
- internal multiples
- reflection
- imaging