Abstract:
Missa Keswal Oil Field is located at a distance of about 60 Km in the south-east
of Islamabad in the eastern part of Potwar basin. The Coordinates of selected well -01 is
33° 12' 0" North, 73° 22' 0" East respectively.
The used data obtained for both petrophysical and seismic processes included the
seismic lines 905-QZN-4,994-GNA-12,994-GNA-09,994-GNA-19,and well log data of
Missa Keswal-01 from Landmark Resources(LMKR) with the approval of Directorate
General of Petroleum Concession (DGPC) to complete our study work of selected area.
In the present study our strike line is oriented in SW-NE and three dip lines are oriented
in SE-NW. Chorgali Formation and Khewra Sandstone are marked as reflector 1&2
respectively to investigate the geological structure in the area. Some major faults were
identified, along these reflectors. Depth, velocity and time contour maps were generated
which shows the pop-up structure in the subsurface and is acting as trap for
hydrocarbons.
Petrophysical analyses was carried out to identify the reservoir and to evaluate the
volume of shale which was 37%, effective porosity =13%, average porosity =20.01%,
saturation of water =45% and saturation of hydrocarbon was 55%.The petrophysical
analyses confirm the presence of strong hydrocarbon zone in the Chorgali formation.
