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Selection of Wavenumbers from SVD Analysis in CSEM 2.5D Modeling
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013, Jun 2013, cp-348-00418
- ISBN: 978-90-73834-48-4
Abstract
All 2.5D modeling algorithms are employing Fourier transform along the strike direction. Most of 2.5D appreaches select a set of wavenumbers only by trial and error in order to obtain wavenumber domain responses. We propose a new way for selecting the minimum number of wavenumbers for the calculating of secondary electromagnetic fields. This method begins with a predefined set of wavenumbers to apply Fourier transform on primary fields from a HED, and then SVD analysis gives us am apparatus for selecting the minimum number of wavenumbers. Finally,resistivity and phases for a 2.5D model are calculated with these wavenumbers.