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f Improved Prestack Depth Imaging by Novel Raypath Selection
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 60th EAGE Conference and Exhibition, Jun 1998, cp-110-00174
- ISBN: 978-90-73781-09-2
Abstract
Efficient imaging of large volumes using 3-D prestack depth migration usually uses only one traveltime in the Kirchhoff integral. The quality of the image depends on which traveltime branch is selected. We demonstrate that both first-arrival and maximum-amplitude traveltimes have their problems and we propose a new selection criterion that gives improved image quality.