TY - GEN
T1 - Post-stack velocity analysis by separation and imaging of seismic diffractions
AU - Fomel, Sergey
AU - Landa, Evgeny
AU - Turhan Taner, M.
N1 - Publisher Copyright:
© 1996-2018 Society of Exploration Geophysicists. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Small geological features manifest themselves in seismic data in the form of diffracted waves, which are fundamentally different from seismic reflections. Using two field data examples, we demonstrate the possibility of separating seismic diffractions in the data and imaging them with optimally chosen migration velocities. Our criterion for separating reflection and diffraction events is the smoothness and continuity of local event slopes. Our criterion for optimal focusing is the local varimax measure. The objective is fast velocity analysis in the post-stack domain and high-resolution imaging of small-scale heterogeneities. Our examples demonstrate the effectiveness of the proposed method for high-resolution imaging of such geological features as faults and salt boundaries.
AB - Small geological features manifest themselves in seismic data in the form of diffracted waves, which are fundamentally different from seismic reflections. Using two field data examples, we demonstrate the possibility of separating seismic diffractions in the data and imaging them with optimally chosen migration velocities. Our criterion for separating reflection and diffraction events is the smoothness and continuity of local event slopes. Our criterion for optimal focusing is the local varimax measure. The objective is fast velocity analysis in the post-stack domain and high-resolution imaging of small-scale heterogeneities. Our examples demonstrate the effectiveness of the proposed method for high-resolution imaging of such geological features as faults and salt boundaries.
UR - http://www.scopus.com/inward/record.url?scp=85055714655&partnerID=8YFLogxK
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AN - SCOPUS:85055714655
SN - 9781604236972
T3 - Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006
SP - 2559
EP - 2563
BT - Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006
PB - Society of Exploration Geophysicists
T2 - Society of Exploration Geophysicists International Exposition and 76tth Annual Meeting 2006, SEG 2006
Y2 - 1 October 2006 through 6 October 2006
ER -