PETROGRAPHY AND PETROPHYSICAL CHARACTERIZATION OF CARBONATE ROCKS FROM GUNUNG RAPAT, PERAK, MALAYSIA

This project try to establish and investigate the correlations between rock physical
properties (porosity, permeability and sonic velocity) of carbonates rocks from Gunung
Rapat, Ipoh, Perak. Generally, correlations between rock physical properties of the
carbonates are not easy to be established as compared to siliclastic sedimentary rocks due
to the heterogeneity that they have in terms of pore type, grains and geometry. We used
correlations of porosity-sonic velocity, permeability-sonic velocity and porositypermeability
in order to study the inter-relationship between the carbonate rocks physical
properties. The preliminary results show a large scatter in the correlations of porositysonic
velocity, permeability-sonic velocity and porosity-permeability thus indicates the
heterogeneity of pore types, structure and distribution in the carbonates. From the SEM
images, we found that the scattered correlations are may due to different kinds of
microporosity and micrite microtextures presence in the carbonate rocks and also due to
the variations in pore geometry. This study has a great significance in the process of a
better understanding of how rock properties of carbonates relate to each other.