The key features of the SSD process are dephasing of the cable response; minimizing amplitude spectral notches within the limits of the ambient noise; redatuming of the data to single depth (user-selected). These are achieved by a 2D spectral reconstruction inversion operator in the shot domain. The SSD algorithm reads the real cable depth headers to initiate the inversion process.
Once SSD is applied, the data’s wavelet shape and timing is stable across offset. The data is now suitable for further processing, such as velocity analysis and surface-related multiple elimination (SRME)/general surface multiple prediction (GSMP) demultiple and imaging in a conventional processing sequence.
- Wavefield separation of flat or slanted streamer acquisition data.
- Enhancement of bandwidth and frequency content of existing marine seismic data.
- Source deghosting in the receiver domain.
- Ability to read the real cable depth from trace headers to initiate the inversion process.
- Application in sliding windows.