Quantitative seismic reservoir characterisation: A model-based approach for the Sampang PSC, East Java, Indonesia

Abstract

A model-based approach for quantifying post-stack seismic amplitudes was conducted for the Alpha and Omega prospects within the Sampang PSC, East Java, Indonesia. Deterministic tuning curves were generated by analysing the effects of porosity variations, fluid content and reservoir thickness on the seismic wavelet for various siliciclastic and limestone units for the prospects. The tuning curves generated are able to assist with prediction of reservoir parameters at undrilled prospects. The results of this modelling study suggest the high amplitude seismic anomalies observed over the Alpha and Omega prospects are bright in response to the presence of gas.