Viscous medium based migration imaging method and device

A method for migration imaging of a viscous medium, comprising:

• determining total attenuation time T* and a phase compensation function of a seismic wave in the viscous medium;
• establishing an amplitude compensation function related to absorption attenuation based on the total attenuation time T*;
• adding gain control to the amplitude compensation function to establish an amplitude compensation function having the gain control;
• determining a new compensation function of the viscous medium based on the phase compensation function of the seismic wave in the viscous medium and the established amplitude compensation function;
• performing Fourier transform on a seismic record of a receiver point of the seismic wave in the viscous medium to obtain a seismic record in a frequency domain;
• performing frequency division compensation on the seismic record in the frequency domain based on the new compensation function of the viscous medium to obtain compensated seismic data;
• and
• performing prestack depth migration on the compensated seismic data to obtain a migration imaging section of the viscous medium.