Dynamic coordinate system elastic wave reverse time migration method, electronic equipment and medium

• Main Authors: WEI ZHEFENG, ZHU CHENGHONG
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention discloses a dynamic coordinate system elastic wave reverse time migration method, electronic equipment and a medium. The method comprises the following steps of: 1, dividing observed seismic records into low-frequency scale data, medium-frequency scale data and high-frequency scale data; step 2, updating the imaging result of the low-frequency longitudinal and transverse wave velocity, judging whether the residual error is smaller than a first threshold value, and if so, entering step 3; step 3, updating the imaging result of the medium-frequency longitudinal and transverse wave velocity, judging whether the residual error is smaller than a second threshold value, and if so, entering step 4; 4, updating the imaging result of the high-frequency longitudinal and transverse wave velocity, judging whether the residual error is smaller than a third threshold value, and if yes, entering the step 5; and step 5, outputting imaging results of the longitudinal and transverse wave velocities of the low-fre