Patent Document ID: 7805250
Application ID: 11829551
Patent Flag: 1

Claim One:
1. A method for creating a velocity model for pre-stack depth migration, the method comprising: creating initial joint inversion input data comprising seismic, gravity and electromagnetic data; jointly inverting, by a computer system, the initial joint inversion input data to create a multiparametric model that comprises velocity, density and resistivity parameter distributions; extracting, by the computer system, velocity parameters, density parameters and resistivity parameters from the multiparametric model to form an extracted velocity model, an extracted density model, and an extracted resistivity model, respectively; calculating, by the computer system, a seismic image using the extracted velocity model; determining, by the computer system, if the calculated seismic image satisfies a predetermined quality criterion; and outputting, by the computer system, the extracted velocity model as the velocity model if the predetermined quality criterion is satisfied.