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Iterative Least-Squares Migration in Practice, Application to a Narrow Azimuth North Sea Dataset
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, First EAGE/SBGf Workshop on Least-Squares Migration, Nov 2018, Volume 2018, p.1 - 5
Abstract
Summary
A case study was carried out over the Viking Graben in the North Sea, were Least-Squares Wave-Equation Migration was used to obtain an optimal global image as well as revealing complex and subtle sand systems better than conventional migration. We address two main practical issues with the technology: errors in the background velocity model and cost. Accounting for un-resolved velocity effects in the data and evaluating different reflectivity models as input to the inversion.
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