Prestack depth migration (PSDM) has become a standard technique for imaging sedimentary basins in many oil provinces. The classical velocity model building workflow is based on linearized traveltime tomography in the depth migrated domain. It has the drawback of being time consuming, since each tomographic update involves a full volume PSDM, and therefore allows only little flexibility in the velocity model building process. In this paper we propose a depth migrated domain formulation of non linear traveltime tomography. It allows in principle to build a velocity model from a single PSDM and opens up the way to new velocity model building workflows, that we will illustrate on a North Sea data example.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error