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C-wave Event Automated Registration Using a Nonlinear Global Search Method
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013, Jun 2013, cp-348-00908
- ISBN: 978-90-73834-48-4
Abstract
For multicomponent seismic data joint processing and interpretation, event registration of C-waves in the P-wave time domain is a critical step, which is one of the “bottlenecks” that limits further application of the multicomponent data. In order to solve this problem, we use the Needleman-Wunsch (NW) algorithm, a nonlinear global optimization method developed for amino acid sequence alignment in proteins, to align C-wave events. The objective function is to maximize the waveform similarity to compensate for the different reflectivities of P-wave and C-wave. Both numerical modeling and field data examples are used to illustrate the methodology and its efficiency and robustness for event registration.