Waveform inversion of lateral velocity variation from wavefield source location perturbation
Type
Conference PaperKAUST Department
Earth Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Seismic Wave Analysis Group
Date
2013-08-19Online Publication Date
2013-08-19Print Publication Date
2013-09Permanent link to this record
http://hdl.handle.net/10754/593696
Metadata
Show full item recordAbstract
It is challenge in waveform inversion to precisely define the deep part of the velocity model compared to the shallow part. The lateral velocity variation, or what referred to as the derivative of velocity with respect to the horizontal distance, with well log data can be used to update the deep part of the velocity model more precisely. We develop a waveform inversion algorithm to obtain the lateral velocity variation by inverting the wavefield variation associated with the lateral shot location perturbation. The gradient of the new waveform inversion algorithm is obtained by the adjoint-state method. Our inversion algorithm focuses on resolving the lateral changes of the velocity model with respect to a fixed reference vertical velocity profile given by a well log. We apply the method on a simple-dome model to highlight the methods potential.Citation
Choi, Y., & Alkhalifah, T. (2013). Waveform inversion of lateral velocity variation from wavefield source location perturbation. SEG Technical Program Expanded Abstracts 2013. doi:10.1190/segam2013-0494.1Publisher
Society of Exploration GeophysicistsConference/Event name
SEG Technical Program Expanded Abstracts 2013Additional Links
http://library.seg.org/doi/abs/10.1190/segam2013-0494.1ae974a485f413a2113503eed53cd6c53
10.1190/segam2013-0494.1