Affiliation:
1. University of Calgary, Department of Geology and Geophysics, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 Canada. Emails:
2. WesternGeco, 1625 Broadway, Denver, Colorado 80202. Emails:
Abstract
Converted seismic waves (specifically, downgoing P‐waves that convert on reflection to upcoming S‐waves are increasingly being used to explore for subsurface targets. Rapid advancements in both land and marine multicomponent acquisition and processing techniques have led to numerous applications for P‐S surveys. Uses that have arisen include structural imaging (e.g., “seeing” through gas‐bearing sediments, improved fault definition, enhanced near‐surface resolution), lithologic estimation (e.g., sand versus shale content, porosity), anisotropy analysis (e.g., fracture density and orientation), subsurface fluid description, and reservoir monitoring. Further applications of P‐S data and analysis of other more complicated converted modes are developing.
Publisher
Society of Exploration Geophysicists
Subject
Geochemistry and Petrology,Geophysics
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