ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,307, issued on June 23, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).
"System and method for automatic detection of microseismic reflections in distributed acoustic sensing data" was invented by Youfang Liu (Houston), Ivan Lim Chen Ning (Houston) and Kurt T. Nihei (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method is described for automatically detecting shear-wave (S-wave) microseismic reflections using distributed acoustic sensing (DAS). The method includes obtaining raw DAS data; performing passive seismic event detection and phase picking; extracting a passive seismic event based on the passive seismic event phase picks ...