Centered Differential Waveform Inversion with Minimum Support Regularization
Type
Conference PaperAuthors
Kazei, Vladimir
Alkhalifah, Tariq Ali

KAUST Department
Earth Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Seismic Wave Analysis Group
Date
2017-05-26Online Publication Date
2017-05-26Print Publication Date
2017-06-12Permanent link to this record
http://hdl.handle.net/10754/624899
Metadata
Show full item recordAbstract
Time-lapse full-waveform inversion has two major challenges. The first one is the reconstruction of a reference model (baseline model for most of approaches). The second is inversion for the time-lapse changes in the parameters. Common model approach is utilizing the information contained in all available data sets to build a better reference model for time lapse inversion. Differential (Double-difference) waveform inversion allows to reduce the artifacts introduced into estimates of time-lapse parameter changes by imperfect inversion for the baseline-reference model. We propose centered differential waveform inversion (CDWI) which combines these two approaches in order to benefit from both of their features. We apply minimum support regularization commonly used with electromagnetic methods of geophysical exploration. We test the CDWI method on synthetic dataset with random noise and show that, with Minimum support regularization, it provides better resolution of velocity changes than with total variation and Tikhonov regularizations in time-lapse full-waveform inversion.Citation
Kazei VV, Alkhalifah T (2017) Centered Differential Waveform Inversion with Minimum Support Regularization. 79th EAGE Conference and Exhibition 2017. Available: http://dx.doi.org/10.3997/2214-4609.201701336.Sponsors
We thank KAUST for its support, as well as Nabil Masmoudi and ZedongWu of SWAG for discussions.Publisher
EAGE Publicationsae974a485f413a2113503eed53cd6c53
10.3997/2214-4609.201701336