Porosity prediction based on seismic faces analysis

Abstract

This paper aims at discussing the porosity prediction based on seismic facies analysis. The basic principles are as follows: Firstly, this mothed can distinguish the different sedimentary facies and transform seismic information into geology information by utilizing the seismic facies analysis, and combining with the log and rock core data on the basis of general interpretation (synthetic seismogram, horizon tracing, structure and faule interpretation) in the research area, further more, based on the density and the acoustic velocity data of log in the single sedimentary facies, this mothed calculates best statistic correlation expression in impedance and porosity. There are several expressions for computing porosity in every different sedimentary facies. Finally, those expressions are used to calculate the porosity. Because of the geology interpretation in profile, this method strengthen the porosity prediction precision, pore fluid prediction and reservoir evaluation by combining geology disciplinarian effectively. Show more