TY - GEN
T1 - Regularized plane-wave least-squares Kirchhoff migration
AU - Wang, Xin
AU - Dai, Wei
AU - Schuster, Gerard T.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2013/8/19
Y1 - 2013/8/19
N2 - A Kirchhoff least-squares migration (LSM) is developed in the prestack plane-wave domain to increase the quality of migration images. A regularization term is included that accounts for mispositioning of reflectors due to errors in the velocity model. Both synthetic and field results show that: 1) LSM with a reflectivity model common for all the plane-wave gathers provides the best image when the migration velocity model is accurate, but it is more sensitive to the velocity errors, 2) the regularized plane-wave LSM is more robust in the presence of velocity errors, and 3) LSM achieves both computational and IO saving by plane-wave encoding compared to shot-domain LSM for the models tested.
AB - A Kirchhoff least-squares migration (LSM) is developed in the prestack plane-wave domain to increase the quality of migration images. A regularization term is included that accounts for mispositioning of reflectors due to errors in the velocity model. Both synthetic and field results show that: 1) LSM with a reflectivity model common for all the plane-wave gathers provides the best image when the migration velocity model is accurate, but it is more sensitive to the velocity errors, 2) the regularized plane-wave LSM is more robust in the presence of velocity errors, and 3) LSM achieves both computational and IO saving by plane-wave encoding compared to shot-domain LSM for the models tested.
UR - http://hdl.handle.net/10754/593699
UR - http://library.seg.org/doi/abs/10.1190/segam2013-0278.1
UR - http://www.scopus.com/inward/record.url?scp=84907560917&partnerID=8YFLogxK
U2 - 10.1190/segam2013-0278.1
DO - 10.1190/segam2013-0278.1
M3 - Conference contribution
SP - 3242
EP - 3246
BT - SEG Technical Program Expanded Abstracts 2013
PB - Society of Exploration Geophysicists
ER -