ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,651, issued on July 21.

"Method, system, and device for full waveform inversion on elastic wave seismic data" was invented by Wenda Li (Beijing), Hong Liu (Beijing) and Shoudong Huo (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a method, system, and device for full waveform inversion on elastic wave seismic data. The method includes: constructing a convolutional neural network full waveform inversion module; determining a multi-scale inversion frequency based on the observation data; performing low-pass filtering on the observation data; determining an initial velocity and an RTM image corresponding to the current inversion f...