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Nonhyperbolic moveout analysis in VTI media using rational interpolation
| Content Provider | Semantic Scholar |
|---|---|
| Author | Douma, Huub Calvert, Alexander S. |
| Copyright Year | 2006 |
| Abstract | Anisotropic velocity analysis using qP-waves in transversely isotropic media with a vertical symmetry axis (VTI) usually is done by inferring the anellipticity parameter η and the normal moveout velocity VNMO from the nonhyperbolic character of the moveout. Several approximations explicit in these parameters exist with varying degrees of accuracy. Here, we present a rational interpolation approach to nonhyperbolic moveout analysis in the t-x domain. This method has no additional computational overhead compared to using expressions explicit in η and VNMO . The lack of such overhead stems from the observation that, for fixed η and zero-offset two-way traveltime t0 , the moveout curve for different values of VNMO can be calculated by simple stretching of the offset axis. This observation is based on the assumptions that the traveltimes of qP-waves in transversely isotropic media mainly depend on η and VNMO , and that the shear-wave velocity along the symmetry axis has a negligibleinfluence on these traveltim... |
| File Format | PDF HTM / HTML |
| DOI | 10.1190/1.2194901 |
| Alternate Webpage(s) | http://cwp.mines.edu/Documents/cwpreports/cwp-498.pdf |
| Alternate Webpage(s) | http://www.cwp.mines.edu/documents/cwpreports/cwp-498.pdf |
| Alternate Webpage(s) | http://www.cwp.mines.edu/Meetings/Project05/cwp498.pdf |
| Alternate Webpage(s) | http://www.cwp.mines.edu/Abstracts/SEG05/douma_nonhyp.pdf |
| Alternate Webpage(s) | https://doi.org/10.1190/1.2194901 |
| Volume Number | 71 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
