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Long Spreadlength Walkaway NMO Approximations for Layered VTI Models
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009, Jun 2009, cp-127-00215
- ISBN: 978-90-73781-67-2
Abstract
The purpose of this paper is to present new moveout equations and test several NMO approximations used in VTI inversion of walkaway VSP data. A method to derive three-term NMO approximations is described. Modeling test show that different approximations h