Type
Conference PaperAuthors
Dai, WeiSchuster, Gerard T.

KAUST Department
Center for Subsurface Imaging and Fluid ModelingEarth Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2013-08-19Online Publication Date
2013-08-19Print Publication Date
2013-09Permanent link to this record
http://hdl.handle.net/10754/593698
Metadata
Show full item recordAbstract
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.Citation
Dai, W., & Schuster, G. T. (2013). Reverse time migration of prism waves for salt flank delineation. SEG Technical Program Expanded Abstracts 2013. doi:10.1190/segam2013-0414.1Publisher
Society of Exploration GeophysicistsConference/Event name
SEG Technical Program Expanded Abstracts 2013Additional Links
http://library.seg.org/doi/abs/10.1190/segam2013-0414.1ae974a485f413a2113503eed53cd6c53
10.1190/segam2013-0414.1