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f Gaining insights about imaging structural uncertainty: TTI 3-D synthetic case study
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 72nd EAGE Conference and Exhibition - Workshops and Fieldtrips, Jun 2010, cp-162-00008
- ISBN: 978-90-73781-87-0
Abstract
Osypov et al. (SEG 2008, EAGE 2010) introduced an uncertainty analysis method for anisotropic migration velocity analysis which generates model samples from the posterior distribution by using eigendecomposition of anisotropic tomography operators and null-space projection. A realistic synthetic model is an important object for validating the uncertainty method because the ground truth is known and various “what if” scenarios could be played. This study deals with analysis of set of such scenarios for the BP TTI 3-D model to gain insights about anisotropic velocity parameter estimation ambiguity and the scale dependency of uncertainty. This analysis was done by using TTI offset ray tracing of the model for an OBC mirror geometry.