Rock property modelling and sensitivity analysis for hydrocarbon exploration in OSSY field, Niger Delta Basin

Abstract The application of quantitative interpretation techniques for hydrocarbon prospect evaluation from seismic has become so vital. effective employment these is dependent on several factors: the quality and well data, sparseness physics rock, lithological structural complexity field. This study adopts reflection pattern, amplitude versus offset (AVO), Biot–Gassmann fluid substitution cross-plot models to understand reservoir rocks in field by examining sensitivity basic rock properties; P-wave velocity, S-wave velocity density, variation lithology types pore spaces reservoirs. ascertain applicability explore studied results pattern AVO revealed that depth interest dominated Class IV sands with a high negative zero reflectivity reduces offset. intercept gradient plot indicated both brine bearing can be discriminated seismic. Fluid modelling properties will favourably respond oil saturation, but as little 5% gas presence result huge change properties, which remain constant upon further increments thereby making it difficult differentiate between economical sub-economical saturations data. Rock separate cluster points typical shale presence, sands. Thus, response processes adopted favours evaluate