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Non-linear Estimation of Thomsen's Anisotropy Parameters in Dipping TI Media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, Jun 2008, cp-40-00488
- ISBN: 978-90-73781-53-5
Abstract
In a dipping transversely isotropic layered medium, the exact offset and traveltime equations have been formulated. A non-linear inverse model using pre conditioning conjugate gradient algorithm has been developed to estimate the Thomsen’s anisotropy parameters from the PP or the joint PP & PS traveltimes. With the assumption of weak anisotropy no prior knowledge of the Thomsen’s anisotropy parameters is required.