Multi-source least-squares migration of marine data
X Wang, GT Schuster - SEG International Exposition and Annual …, 2012 - onepetro.org
SEG International Exposition and Annual Meeting, 2012•onepetro.org
Kirchhoff based multi-source least-squares migration (MSLSM) is applied to marine
streamer data. To suppress the crosstalk noise from the excitation of multiple sources, a
dynamic encoding function (including both time-shifts and polarity changes) is applied to the
receiver side traces. Results show that the MSLSM images are of better quality than the
standard Kirchhoff migration and reverse time migration images; moreover, the migration
artifacts are reduced and image resolution is significantly improved. The computational cost …
streamer data. To suppress the crosstalk noise from the excitation of multiple sources, a
dynamic encoding function (including both time-shifts and polarity changes) is applied to the
receiver side traces. Results show that the MSLSM images are of better quality than the
standard Kirchhoff migration and reverse time migration images; moreover, the migration
artifacts are reduced and image resolution is significantly improved. The computational cost …
Summary
Kirchhoff based multi-source least-squares migration (MSLSM) is applied to marine streamer data. To suppress the crosstalk noise from the excitation of multiple sources, a dynamic encoding function (including both time-shifts and polarity changes) is applied to the receiver side traces. Results show that the MSLSM images are of better quality than the standard Kirchhoff migration and reverse time migration images; moreover, the migration artifacts are reduced and image resolution is significantly improved. The computational cost of MSLSM is about the same as conventional least-squares migration, but its IO cost is significantly decreased.
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