SIMULATION OF SEISMIC VELOCITIES Russian patent published in 2023 - IPC G01V1/30 G01V1/36 

FIELD: reflected seismic tomography.

SUBSTANCE: method and a device for determining a velocity model of a geological area, containing computer programs that are programmed on a computer storage medium. According to one aspect, the method includes: obtaining a current velocity model of a geological area; obtaining pre-stack and post-stack seismic data characterizing the geological area; and for each of the number of iterations: determining a number of reflections from the post-stack seismic data and the current velocity model; determining an appropriate path observation time for each of the number of reflected waves, comprising, for each reflected wave, determining an appropriate observation time of the reflected wave path based at least in part on kinematic characteristics obtained from a respective seismic trace contained in the pre-stack seismic data; and updating the current velocity model based at least in part on the observation times for the travel of the number of reflected waves.

EFFECT: increase in the accuracy and informativeness of the data obtained.

20 cl, 6 dwg