Paper Details

- In the evaluation of a petroleum reserve, it is necessary to determine accurately certain petrophysicalproperties such as porosity and permeability of the reservoir rocks under different compaction conditions. These propertiesare affected by the relevant physical properties and such physical properties and also mechanical properties affect thedrilling programs and the development plans for a reservoir. It is more convenient to use homogenous rock samples withnearly constant initial permeability, obtaining such cores is very difficult. In this paper a simulated natural andhomogeneous compacted sandstone rock with known physical and petrophysical properties were used. The physicalproperties include grain size, cementing material concentration, and compaction (confining) pressure. The effect of theseproperties on the petrophysical properties of Rock such as permeability and porosity were also known. For the samesimulated natural sandstone rocks, Sound wave velocity was measured using an ultra sound tool. Good relationships havebeen developed between sound wave velocity and other rock properties; porosity, permeability, cementing condition atdifferent confining pressures. The sandstone cores have been grouped according grain size to five groups ranged between 45and 300 μm mixed with different concentrations of cementing material. The mixture was compacted at three differentcompaction pressure ranges from 11000 to 23000 psi. These varying lithification factors gave these sandstone rocks a widerange of petrophysical and physical properties. The results of this study were presented as graphs of simulated lithificationfactors, porosity, and permeability versus sound wave velocity.

G.M. Hamada, E.S. Al-Homadhi, “Developed Correlationsbetween Porosity, Permeability and Sound Wave Velocity Under different Compaction Pressures for Sandstone Core Samples”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 5, pp. 74-82, May 2017.