Full text loading...
-
Travel-times behavior of reflected P-waves in horizontal thick-layered media with strong anisotropy
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 18th International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2019, Volume 2019, p.1 - 5
Abstract
This article discusses an effect of strong anisotropy influence on a form of P-waves travel-times. The character of non-hyperboloid NMO-corrections also is determined by elastic symmetry of rock strata in thick horizontal reflection surface with strong (triclinic) anisotropy. The algorithm for calculations of surface travel-times in layered shale medium with triclinic symmetry is presented. During investigation was found that symmetry of travel-times isochrones map of horizontally layered medium is strictly consistent with the elastic symmetry of shale layer. It is proved that isochrones map of non-hyperboloid correction has the same symmetry as the elastic constants. In the article is shown that azimuthal character of non-hyperboloid NMO-corrections also is strictly depends on elastic symmetry of rocks strata.