Full text loading...
-
Accurate Seismic Traveltime Approximation at all Offsets
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 63rd EAGE Conference & Exhibition, Jun 2001, cp-15-00398
Abstract
P009 ACCURATE SEISMIC TRAVELTIME APPROXIMATION AT ALL OFFSETS E. CAUSSE and K. HOKSTAD SINTEF Petroleum Research N-7034 Trondheim Norway. Introduction In conventional reflection seismics data are usually stacked along hyperbolae. However the hyperbolic approximation is generally too inaccurate in the presence of anisotropy or wave mode conversions or in wide-aperture surveys e.g. for subbasalt exploration. One solution to refine the hyperbolic approximation is to use more than two terms of the Taner and Koehler (1969) series: t 2 ' a 0 + a 2 x 2 + a 4 x 4 + a 6 x 6 :::� (1) where x