Full text loading...
-
Eliminating Imaging Artifacts in Two-Way Migrations Using Pre-Stack Gathers
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 12th International Congress of the Brazilian Geophysical Society, Aug 2011, cp-264-00104
Abstract
Two-way wave-based migration methods like reverse time migration (RTM) have become established methods in areas of complex geology. However, RTM is also known for producing low frequency artifacts, where sharp velocity contrasts are present. We show that the imaging condition applied with time-shift gathers offers an excellent opportunity to remove artifacts based on properties of wave propagation.