Integrated study for hydrocarbon potential and reservoir evaluation of Qazian 1x, Gujjar Khan, Potwar sub-basin using seismic and wireline log data (P-1076) (MFN 3108)

Abstract

The main purpose of the study is to evaluate hydrocarbon potential of the study area, in a part of Upper Indus basin i.e. Qazian oil field and delineation of potential leads for future prospects. This has to be done by the analysis of 2-D seismic and wire line log data, which have been provided by Landmark, Pakistan with the permission of Directorate General of Petroleum Concessions, Islamabad, Pakistan. This data set comprises with 5 seismic lines and a complete suite of wire line logs of Qazian Well 1-X. The methodology adopted to accomplish this task includes; structural and stratigraphic interpretation of seismic data, 2-D seismic modeling, rock physics and petrophysical analysis. Seismic data analysis includes identification and marking of the different Lithological horizons and names them according to the depths after correlation with the well data. The demarcation of different faults on these horizons is to develop the structural geometry. Seismic depth and time mapping to develop structural contour maps using different licensed software for different marked stratigraphic horizons. The same seismic data was also used to analyze the rock physical parameters and 2-D seismic modeling. Analysis of wire line logs includes the calculation of different reservoir characteristics like Shale Volume (Vsh), Sand Volume (Vsnd), Porosity (Phi), Resistivity of True Formation (Rt), Density (RhoB), Water Saturation (Sw), Hydrocarbon Saturation (Shc) etc., using different available Logs such as Gamma Ray, Compensated Neutron LLD, LLS, Microspherically Focused Log, Litho Density Log, Sonic Log and Spontaneous Potential Log. These measured Parameters, then, used further for reservoir potential evaluation. The results computed from all above mentioned analysis of the data was used for the integrated study regarding reservoir characterization of the area under study.