Application of perturbation theory to a P-wave eikonal equation in orthorhombic media

Alexey Stovas, Nabil Masmoudi, Tariq Ali Alkhalifah

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The P-wave eikonal equation for orthorhombic (ORT) anisotropic media is a highly nonlinear partial differential equation requiring the solution of a sixth-order polynomial to obtain traveltimes, resulting in complex and time-consuming numerical solutions. To alleviate this complexity, we approximate the solution of this equation by applying a multiparametric perturbation approach. We also investigated the sensitivity of traveltime surfaces inORT mediawith respect to three anelliptic parameters. As a result, a simple and accurate P-wave traveltime approximation valid for ORT media was derived. Two different possible anelliptic parameterizations were compared. One of the parameterizations includes anelliptic parameters defined at zero offset: η1, η2, and ηxy. Another parameterization includes anelliptic parameters defined for all symmetry planes: η1, η2, and η3. The azimuthal behavior of sensitivity coefficients with different parameterizations was used to analyze the crosstalk between anelliptic parameters. © 2016 Society of Exploration Geophysicists.
Original languageEnglish (US)
Pages (from-to)C309-C317
Number of pages1
JournalGEOPHYSICS
Volume81
Issue number6
DOIs
StatePublished - Oct 12 2016

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