Dispersion Analysis Of Split Flexural Waves
Name
1997.15 Nolte et al.pdf
Size
671.25 KB
Format
Adobe PDF
Checksum (MD5)
81d8394ddffb6718d9680f97885822b0
Author(s)
Nolte, Bertram
Rao, Rama
Huang, Xiaojun
Date Issued
1997
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;1997-15
Abstract
In this paper we first present a technique for measuring dispersion curves from array data, that is both simple and efficient. We demonstrate its performance on both synthetic and field data. We then use the technique to compute dispersion curves for split flexural waves from cross-dipole data from the Powder River Basin in Wyoming. In this data set we consistently observe crossover of the fast and slow flexural waves, an indication of stress-induced anisotropy. Next, we demonstrate the effect that dispersion-curve crossover has on Alford rotation. Finally, we give a procedure for rapidly determining stress-induced anisotropy from crossed-dipole logs.
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