Modelling and mapping hydrocarbon saturated sand reservoir using Poisson’s impedance (PI) inversion: a case study of Bonna field, Niger Delta swamp depobelt, Nigeria

3D seismic volume and two well logs data labelled Bonna-6 and Bonna-8 were employed in the inversion process. The data set was simultaneously inverted to produce P - and S -impedances, density, V P − V S , and PI seismic attributes. An average “ c ” term value of 1.37 was obtained from the inverse of the slope of the crossplot of P -impedance versus S -impedance for Bonna-6 and Bonna-8 wells. This value was employed in the inversion process to...