TY - GEN
T1 - Source-receiver prestack depth migration using dreamlets
AU - Wu, Bangyu
AU - Wu, Rushan S.
AU - Gao, Jinghuai
N1 - Publisher Copyright:
© 2011 SEG.
PY - 2011
Y1 - 2011
N2 - The dreamlet method adds the time-frequency localization to the frequency domain beamlet method by an additional wavelet transform along the time axis. This method has been applied to shot-profile prestack depth migration and shows great potential on wavefield compression and good imaging quality. However, in shot domain migration, the point source excited wavefield expands during migration on the time-space plane and then increases the amount of dreamlet coefficients and therefore, the computation time. The survey sinking migration not only downward continues the geophones but also the shots. Combining the survey sinking and dreamlet decomposition can achieve higher compression ratio on the whole data volume. For the SEG/EAGE model, the dreamlet survey sinking algorithm is 3 times faster compared with the shot domain dreamlet method with similar imaging quality.
AB - The dreamlet method adds the time-frequency localization to the frequency domain beamlet method by an additional wavelet transform along the time axis. This method has been applied to shot-profile prestack depth migration and shows great potential on wavefield compression and good imaging quality. However, in shot domain migration, the point source excited wavefield expands during migration on the time-space plane and then increases the amount of dreamlet coefficients and therefore, the computation time. The survey sinking migration not only downward continues the geophones but also the shots. Combining the survey sinking and dreamlet decomposition can achieve higher compression ratio on the whole data volume. For the SEG/EAGE model, the dreamlet survey sinking algorithm is 3 times faster compared with the shot domain dreamlet method with similar imaging quality.
UR - https://www.scopus.com/pages/publications/85055478854
M3 - 会议稿件
AN - SCOPUS:85055478854
SN - 9781618391841
T3 - Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
SP - 3377
EP - 3381
BT - Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
PB - Society of Exploration Geophysicists
T2 - Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
Y2 - 18 September 2011 through 23 September 2011
ER -