Seismic Repeatability Analysis from Oseberg 4D Processing – A Case History

P203 SEISMIC REPEATABILITY ANALYSIS FROM OSEBERG 4D PROCESSING – A CASE HISTORY 1 Abstract A detailed repeatability analysis has been performed based on Oseberg 4D seismic data using a tailored 4D-processing sequence. This paper demonstrates the improvement of the repeatability in three major steps: a) pre-processing tidal correction swell noise removal channel based RMS amplitude scaling and tau-p deconvolution to attenuate multiples; b) 4D azimuth preserved trace binning to produce the desired offsets classes and missing trace interpolation on the offset planes and c) amplitude preserved pre-stack time migration (PSTM) and post migration processing including residual moveout correction CDP trim