You must log in to edit PetroWiki. Help with editing
Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. More information
Message: PetroWiki content is moving to OnePetro! Please note that all projects need to be complete by November 1, 2024, to ensure a smooth transition. Online editing will be turned off on this date.
Glossary:Anisotropy
-Differences in rock — segments showing different responses when measured.
-This is represented by covariance models that have major and minor ranges of different distances (correlation scale or lengths). There are two types of anisotropy: geometric anisotropic covariance models have the same sill but different ranges, whereas zonal anisotropic covariance models have the same correlation ranges, but different sills.