| 摘要 |
Methods and systems for dip constrained non-linear tomography in seismic data. An additional term, comprising the dip associated with the kinematic migration of locally coherent events, is introduced into the cost function. The velocity is then updated to match the expected dip of the re-migrated offset-dependent events. Volumetric dip information can be automatically selected at a greater density in shallow locations, therefor complementing the lower density of the RMO events associated with shallow locations. Figure 7 Adding a dip constraint term to a cost function equation of said non-linear slope tomography Adjusting the velocity model, associated with saied non-linear slope tomography, to match an expected dip of a re-migrated offset dependent event t a706 Outputting a minimized cost function |
