THE APPLICATION OF STRATA SEISMIC INVERSION TECHNIQUE TO THE DESCRIPTION OF S~(2-3) RESERVOIRS IN LIUTUN SAG OF DONGPU DEPRESSION

The seismic wave impedance inversion technique is becoming an increasingly important tool in carrying out reservoir prediction for oil exploration and development. There exist both turbidite sand and thick-bedded halite in S 2-3 formation of Liutun sag. The lithofacies vary greatly in transverse direction. The application of the Strata inversion technique in this area is discussed according to the data processing order, which mainly includes well logging data correction, wavelet extraction, correlation of the synthetic records with the seismic profile, establishment of the initial model, and the constraint inversion. Ideal results are achieved showing the gradual modification from the deep turbidite fan to the salt lake face. The contour map of the sand body in each system tract is made, so the spatial distribution of the reservoir is characterized.