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Analysis of Guided Waves Recorded on Permanent Ocean Bottom Cables
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, Jun 2007, cp-27-00571
- ISBN: 978-90-73781-54-2
Abstract
P063 Analysis of Guided Waves Recorded on Permanent Ocean Bottom Cables P.J. Hatchell* (Shell International Exploration & Production BV) P.B. Wills (Shell International Exploration & Production BV) & M. Landro (NTNU) SUMMARY Guided waves propagating in the water layer are observed on data from the permanent OBC cables at Valhall. These waves have large amplitudes and result from post-critical p-wave reflections at the seafloor. Two methods for analyzing these waves are examined: one in terms of the normal mode theory of Press and Ewing and the second in terms of ray theory. It is found that the dispersion relationship predicted