Ray tomography: implementation, structural uncertainties and geological constraints

@inproceedings{RUNKJRM83,
 abstract = { Seismic depth migration allows us to image the subsurface from recorded seismic data. The re-
sulting depth migrated image is usually used by interpreters to build a geological model of the
subsurface. Depth imaging requires a reliable velocity model. In this article, we revisit a velocity
model building technique known as migration velocity analysis (MVA). At each iteration of the
process, an updated velocity model is used to perform a new depth migration. The velocity model
is considered sufficiently accurate when re
ectors are 
at along an axis of a redundant parame-
ter, such as offset or re
ection-angle. In this paper, we present our own implementation of MVA.
We find that their exist multiple acceptable different velocity models, leading to structural uncer-
tainties. Finally, we investigate the ray-tomography from an implicit structural modeling problem
point of view; this results in a formalism that allows us to incorporate geological constraints in the
tomographic system. },
 author = { Beraud, Thomas AND Irakarama, Modeste AND Cupillard, Paul },
 booktitle = { 2018 Ring Meeting },
 publisher = { ASGA },
 title = { Ray tomography: implementation, structural uncertainties and geological constraints },
 year = { 2018 }
}