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Reducing Infill – Real Time Application of Geophysically Based Coverage Specifications
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, Jun 2010, cp-161-00593
- ISBN: 978-90-73781-86-3
Abstract
the coverage in real time onboard the seismic vessel, by generating “traffic light plots” directly from the fold maps. This methodology allows the navigators to utilize geophysically based coverage specifications to steer the vessel efficiently and to make infill decisions. Unnecessary infill lines are avoided, leading to saved time and reduced cost for a seismic survey. An example from the GoM is discussed, to illustrate the advantage of using the methodology. The survey was acquired with 11% infill, in an area where infill rates up to 30% are common. No footprints due to lower fold can be observed in the final migrated volume. In all cases where this methodology has been used to date, the experience has been that the coverage specifications can be relaxed when using geophysically based criteria, compared to conventional coverage specifications.