Retrieving Reservoir-only Reflection and Transmission Responses from Target-enclosing Extended Images

I. Vasconcelos, M. Ravasi, Joost van der Neut, A. Kritski, T. Cui

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientific

2 Citations (Scopus)
17 Downloads (Pure)

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 languageEnglish
Title of host publication79th EAGE Conference and Exhibition 2017
Subtitle of host publicationParis, France, 12-15 June 2017
PublisherEAGE
Number of pages5
DOIs
Publication statusPublished - 2017
Event79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter - Paris, France
Duration: 12 Jun 201715 Jun 2017
Conference number: 79

Conference

Conference79th EAGE Conference and Exhibition 2017
CountryFrance
CityParis
Period12/06/1715/06/17

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