| 摘要 |
Deghosting seismic data related to a subsurface of a body of water. The method includes receiving input seismic data recorded by seismic receivers that located at different depths, generating migration data 420a and mirror migration data 420a from the input seismic data, deriving a ghost free model 440 based on simultaneously using the migration data (du) and mirror migration data, and generating a final image of the subsurface using the deghosted data set. The method may also include generating primary and ghost datasets based on the ghost free model, simultaneously adaptively subtracting 460 the primary and ghost datasets from the migration data to provide adapted primary and adapted residual datasets based on the adapted primary and the adapted residual datasets. A final image may be derived from these datasets. Another aspect relates to a method of processing data which involves deriving first and second ghost lag models corresponding to the migration and mirror migration data respectively. |
