Publications

Seismic inversion techniques are used widely to derive rock properties in the subsurface from seismic data. Seismic inversion has proved to the most reliable and advanced method of reservoir characterization. The key element in deriving reservoir properties from seismic data is quality. Seismic data acquisition should be designed to produce high quality seismic data. Thus, seismic processing should be focused on preserving seismic amplitudes on full and partial stack volumes. The seismic data should have good resolution, balanced amplitude, and balanced frequency between the partial stacks and other stack volumes. Well logs can be used for the detection of reservoirs and their properties. To obtain meaningful inversion results, well logs should be able to describe rock properties using acoustic and elastic properties (Vp, Vs, density, Poisson’s Ratio). The feasibility study on seismic inversion for quantitative seismic interpretation has been applied in the South Sesulu Block, South Makassar Strait, Indonesia. The data consists of five wells with full and partial stack data volumes. In conclusion, the existing seismic data are not reliable for quantitative seismic interpretation. The seismic data need to be reprocessed through PreSDM to improve the quality by applying amplitude balancing or trace matching to remove lateral amplitude variation and seismic alignment.