2-D SEISMIC INTERPRETATION OF MEYAL AREA INTEGRATED WITH PETROPHYSICAL ANALYSIS, FACIES ANALYSIS AND COLORED INVERSION

Abstract

Reservoir characterization using well and seismic data is a renowned technique within the context of hydrocarbon exploration. This study pertains to the interpretation of seismic lines, wire line logs and colored inversion for better visualization of important features at reservoir level. The study area selected for this purpose is Meyal area (Upper Indus Basin) Pakistan. The area is a part of Potwar sub-basin which is known for its hydrocarbon structural traps. Datta and Patala Formations act as source rocks, Chorgali and Sakesar Formation are the two main reservoir rocks whereas Kuldana and Murree Formations act as seal/cap rocks. The data used for this work consist of 4 seismic lines. Three of them are Dip and one Strike lines. The result suggest that study area consists of and pop-up anticlines. Trace envelop and instantaneous phases seismic attributes are used to confirm the interpretation results and faults marking. Facies and Petrophysical analysis of Well MYL-09 is carried out for Chorgali and Sakesar Formations in order to depict the favorable zones for hydrocarbon accumulation and their reservoir characteristics. 9% porosity and 55% hydrocarbon saturation from petrophysics indicates that the reservoir zone has effective potential. Colored Inversion is used for developing the relationship between seismic data and well logs, to improve resolution and to calculate accurately rock properties. Very clear low impedance map of Line-07 has been achieved by inversion, shown the accuracy of this technique.