Cross-equalization technology in time-lapse seismic exploration

The cross-equalization technology is a key procedure in data processing of time-lapse seismic exploration. The technology can effectively remove the false anomalies formed in the time-lapse seismic difference section due to the data acquisition and the disconformity of data processing procedure with processing parameters and can protrude the seismic response differences related to reservoir development effect, causing the anomalies in the time-lapse seismic difference section to be corresponding with the petrophysical property change in the reservoir. A typical post-stack cross-equalization processing technology includes the following four basic steps: (1) spatial correction; (2) match-filtering; (3) amplitude balancing; and (4) velocity correction.