TY - GEN
T1 - Reverse time migration of prism waves for salt flank delineation
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 - In this paper, we present a new reverse time migration method for imaging salt flanks with prism wave reflections. It consists of four steps: (1) migrating the seismic data with conventional RTM to give the RTM image; (2) using the RTM image as a reflectivity model to simulate source-side reflections with the Born approximation; (3) zero-lag correlation of the source-side reflection wavefields and receiver-side wavefields to produce the prism wave migration image; and (4) repeating steps 2 and 3 for the receiver-side reflections. An advantage of this method is that there is no need to pick the horizontal reflectors prior to migration of the prism waves. It also separately images the vertical structures at a different step to reduce crosstalk interference. The disadvantage of prism wave migration algorithm is that its computational cost is twice that of conventional RTM. The empirical results with a salt model suggest that prism wave migration can be an effective method for salt flank delineation in the absence of diving waves.
AB - In this paper, we present a new reverse time migration method for imaging salt flanks with prism wave reflections. It consists of four steps: (1) migrating the seismic data with conventional RTM to give the RTM image; (2) using the RTM image as a reflectivity model to simulate source-side reflections with the Born approximation; (3) zero-lag correlation of the source-side reflection wavefields and receiver-side wavefields to produce the prism wave migration image; and (4) repeating steps 2 and 3 for the receiver-side reflections. An advantage of this method is that there is no need to pick the horizontal reflectors prior to migration of the prism waves. It also separately images the vertical structures at a different step to reduce crosstalk interference. The disadvantage of prism wave migration algorithm is that its computational cost is twice that of conventional RTM. The empirical results with a salt model suggest that prism wave migration can be an effective method for salt flank delineation in the absence of diving waves.
UR - http://hdl.handle.net/10754/593698
UR - http://library.seg.org/doi/abs/10.1190/segam2013-0414.1
UR - http://www.scopus.com/inward/record.url?scp=85058108289&partnerID=8YFLogxK
U2 - 10.1190/segam2013-0414.1
DO - 10.1190/segam2013-0414.1
M3 - Conference contribution
SN - 9781629931883
SP - 3861
EP - 3865
BT - SEG Technical Program Expanded Abstracts 2013
PB - Society of Exploration Geophysicists
ER -