Patent ID: 11899150
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for generating a velocity model for a sediment-basement interface of a subsurface region, the method comprising:
receiving seismic data representing acoustic signals that are reflected from regions of the subsurface;
receiving potential fields data comprising potential field values that are mapped to locations in the subsurface;
based on the potential fields data and seismic data, generating weighted time-depth data pairs;
selecting a velocity model that relates a velocity value to a depth value in a time-depth relationship;
optimizing velocity coefficients of the velocity model by:
accessing a set of velocity models;
determining, for each velocity model, a set of depth estimates for corresponding time values;
comparing the set of depth estimates to depth values of the weighted time-depth data pairs; and
based on the comparing, adjusting the velocity coefficients of the velocity model, wherein adjusting the velocity coefficients reduces a difference between the depth estimates and the depth values of the weighted time-depth pairs; and

generating, using the velocity model having the optimized coefficients, a seismic image of the sediment-basement interface.