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dc.contributor.authorLi, Jingshuang
dc.contributor.authorFehler, Michael
dc.contributor.authorYang, Dinghui
dc.contributor.authorHuang, Xueyuan
dc.date.accessioned2015-04-01T16:29:56Z
dc.date.available2015-04-01T16:29:56Z
dc.date.issued2014-12
dc.date.submitted2014-08
dc.identifier.issn0016-8033
dc.identifier.issn1942-2156
dc.identifier.urihttp://hdl.handle.net/1721.1/96309
dc.description.abstractReliable 3D imaging is a required tool for developing models of complex geologic structures. Reverse time migration (RTM), as the most powerful depth imaging method, has become the preferred imaging tool because of its ability to handle complex velocity models including steeply dipping interfaces and large velocity contrasts. Finite-difference methods are among the most popular numerical approaches used for RTM. However, these methods often encounter a serious issue of numerical dispersion, which is typically suppressed by reducing the grid interval of the propagation model, resulting in large computation and memory requirements. In addition, even with small grid spacing, numerical anisotropy may degrade images or, worse, provide images that appear to be focused but position events incorrectly. Recently, stereo-operators have been developed to approximate the partial differential operator in space. These operators have been used to develop several weak-dispersion and efficient stereo-modeling methods that have been found to be superior to conventional algorithms in suppressing numerical dispersion and numerical anisotropy. We generalized one stereo-modeling method, fourth-order nearly analytic central difference (NACD), from 2D to 3D and applied it to 3D RTM. The RTM results for the 3D SEG/EAGE phase A classic data set 1 and the SEG Advanced Modeling project model demonstrated that, even when using a large grid size, the NACD method can handle very complex velocity models and produced better images than can be obtained using the fourth-order and eighth-order Lax-Wendroff correction (LWC) schemes. We also applied 3D NACD and fourth-order LWC to a field data set and illustrated significant improvements in terms of structure imaging, horizon/layer continuity and positioning. We also investigated numerical dispersion and found that not only does the NACD method have superior dispersion characteristics but also that the angular variation of dispersion is significantly less than for LWC. Read More: http://library.seg.org/doi/abs/10.1190/geo2013-0472.1en_US
dc.description.sponsorshipNational Natural Science Foundation (China) (Grant 41230210)en_US
dc.description.sponsorshipMassachusetts Institute of Technology. Earth Resources Laboratory (Founding Members Consortium)en_US
dc.language.isoen_US
dc.publisherSociety of Exploration Geophysicistsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1190/GEO2013-0472.1en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceSociety of Exploration Geophysicistsen_US
dc.title3D weak-dispersion reverse time migration using a stereo-modeling operatoren_US
dc.typeArticleen_US
dc.identifier.citationLi, Jingshuang, Michael Fehler, Dinghui Yang, and Xueyuan Huang. “3D Weak-Dispersion Reverse Time Migration Using a Stereo-Modeling Operator.” GEOPHYSICS 80, no. 1 (December 5, 2014): S19–S30. © 2014 Society of Exploration Geophysicistsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorFehler, Michaelen_US
dc.relation.journalGeophysicsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLi, Jingshuang; Fehler, Michael; Yang, Dinghui; Huang, Xueyuanen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-8814-5495
mit.licensePUBLISHER_POLICYen_US


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