INTEGRATED SEISMIC INTERPETATION, PETROPHYSICAL ANALYSIS AND ROCK PHYSICS MODELLING OF DANDHI AREA, RAHIM YAR KHAN

Abstract

The dissertation work includes seismic data interpretation, Petrophysical analysis using well logs data; for the identification of possible prospect zones. Facies modeling for the confirmation of lithology’s and Rock Physics to find out the rock physical properties. Two-dimensional seismic data interpretation has been carried out in Central Indus Basin, Dandhi area to confirm the reservoir characteristics of Sui Main Limestone Formation. Time and Depth contour maps of Sui Main Limestone Formation, Ghazij Formation and Upper Ranikot Formation confirm that the area is tectonically stable. Petrophysical analysis of well Sabzal-01 is carried out for Sui Main Limestone Formation in order to depict the probable hydrocarbon producing zones. The results suggest that Sui Main Limestone’s marked zone having VSH 11%, PHIE 8%, SW 67% and H.C Saturation 33%. Facies modeling is done for the confirmation of lithology’s for this purpose different cross plots has been generated which gives the result that we have pure limestone, and carbonaceous shale (limy shale) but didn’t get pure shale in our reservoir. Rock Physics describes a reservoir rock by physical properties such as porosity, rigidity, compressibility, properties that will affect how seismic waves physically travel through the rocks. This prepare links between seismic and properties of reservoir (petrophysics) more quantitatively. Different plots of elastic modulus with reservoir depth show low values in productive zones which also confirm our Petrophysical results.