1results about How to "Fix build issues" patented technology

The application provides a velocity model updating method and device based on seismic-logging data difference, which comprises the following steps: obtaining seismic data and logging data; synthesizing model seismic data according to the logging data; calculating the local similarity of the model seismic data and the seismic data by using the LSIM method to obtain a time offset; generating updated logging velocity according to the time offset and logging velocity in the logging data; obtaining initial seismic migration velocity; and generating updated seismic migration velocity according to the logging velocity, the updated logging velocity and the initial seismic migration velocity. The application quantifies misplacement and updates seismic migration velocity by using the local similarity technology, realizes high precision and geological consistency of the velocity model, improves the resolution of the velocity model, and helps to solve the velocity model construction problem in complex strata or anisotropic regions, and has a wide application prospect.