Inversion method, system and device and storage medium

• Main Authors: XU WANGLIN, LI JIANZHONG, BAI BIN, SUN YUANSHI, FU LING, GAO JIANRONG
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2022
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention provides an inversion method, system and device and a storage medium. The inversion method comprises the following steps: acquiring a sharp pulse longitudinal wave impedance reflectivity inversion result of a target area by utilizing pre-stack sparse layer inversion based on Fatti approximation; determining a vertical position vector of non-zero reflectivity based on the longitudinal wave impedance reflectivity inversion result; based on the vertical position vector of the non-zero reflectivity, constructing an interface constraint matrix; and performing least square inversion based on Russell approximation by taking the constructed interface constraint matrix as a constraint to obtain one or a combination of two of a fluid factor inversion result, a shear modulus inversion result and a density inversion result. According to the method, the problem of poor stability of conventional pre-stack sparse layer inversion based on Russell approximation is effectively solved, and a high-precision and hig