On the Resolution of Inversion for Orthorhombic Anisotropy

Handle URI:
http://hdl.handle.net/10754/624910
Title:
On the Resolution of Inversion for Orthorhombic Anisotropy
Authors:
Kazei, Vladimir; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
We investigate the resolution of elastic anisotropic inversion for orthorhombic media with P-waves by remapping classic radiation patterns into the wavenumber domain. We show analytically that dynamic linearized inversion (linearized reverse-time migration and full-waveform inversion) for orthorhombic anisotropy based on longitudinal waves is fundamentally sensitive to emph{six} parameters only and density, in which the perturbing effects can be represented by particular anisotropy configuration. Singular value decomposition of spectral sensitivities allows us to provide estimates of the number of parameters one could invert in specific acquisition settings, and with certain parametrization. In most acquisition scenarios, a hierarchical parameterization based on the $P$, and $S$-wave velocities, along with dimensionless parameters that describe the anisotropy as velocity ratio in the radial and azimuthal directions, minimizes the tradeoff and increases the sensitivity of the data to velocity compared to the standard (stiffness, density) parametrization. These features yield more robust velocity estimation, by focusing the inversion on a subset of invertible parameters.
KAUST Department:
King Abdullah University of Science & Technology
Citation:
Kazei VV, Alkhalifah T (2017) On the Resolution of Inversion for Orthorhombic Anisotropy. 79th EAGE Conference and Exhibition 2017. Available: http://dx.doi.org/10.3997/2214-4609.201701228.
Publisher:
EAGE Publications BV
Journal:
79th EAGE Conference and Exhibition 2017
Issue Date:
26-May-2017
DOI:
10.3997/2214-4609.201701228
Type:
Conference Paper
Additional Links:
http://www.earthdoc.org/publication/publicationdetails/?publication=88945
Appears in Collections:
Conference Papers

Full metadata record

DC FieldValue Language
dc.contributor.authorKazei, Vladimiren
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2017-06-12T08:33:42Z-
dc.date.available2017-06-12T08:33:42Z-
dc.date.issued2017-05-26en
dc.identifier.citationKazei VV, Alkhalifah T (2017) On the Resolution of Inversion for Orthorhombic Anisotropy. 79th EAGE Conference and Exhibition 2017. Available: http://dx.doi.org/10.3997/2214-4609.201701228.en
dc.identifier.doi10.3997/2214-4609.201701228en
dc.identifier.urihttp://hdl.handle.net/10754/624910-
dc.description.abstractWe investigate the resolution of elastic anisotropic inversion for orthorhombic media with P-waves by remapping classic radiation patterns into the wavenumber domain. We show analytically that dynamic linearized inversion (linearized reverse-time migration and full-waveform inversion) for orthorhombic anisotropy based on longitudinal waves is fundamentally sensitive to emph{six} parameters only and density, in which the perturbing effects can be represented by particular anisotropy configuration. Singular value decomposition of spectral sensitivities allows us to provide estimates of the number of parameters one could invert in specific acquisition settings, and with certain parametrization. In most acquisition scenarios, a hierarchical parameterization based on the $P$, and $S$-wave velocities, along with dimensionless parameters that describe the anisotropy as velocity ratio in the radial and azimuthal directions, minimizes the tradeoff and increases the sensitivity of the data to velocity compared to the standard (stiffness, density) parametrization. These features yield more robust velocity estimation, by focusing the inversion on a subset of invertible parameters.en
dc.publisherEAGE Publications BVen
dc.relation.urlhttp://www.earthdoc.org/publication/publicationdetails/?publication=88945en
dc.rightsGold Open Accessen
dc.rightsArchived with thanks to 79th EAGE Conference and Exhibition 2017en
dc.titleOn the Resolution of Inversion for Orthorhombic Anisotropyen
dc.typeConference Paperen
dc.contributor.departmentKing Abdullah University of Science & Technologyen
dc.identifier.journal79th EAGE Conference and Exhibition 2017en
dc.eprint.versionPublisher's Version/PDFen
kaust.authorKazei, Vladimiren
kaust.authorAlkhalifah, Tariq Alien
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