Abstract:
North Potwar deformed zone (NPDZ) is present in Upper Indus Basin Potwar
plateau. The main source of deformation in this zone is Indian plate movement toward
north. Potwar basin is the first oldest known basin for commercial hydrocarbon
production; when the exploration was only on anticlinal and oil seepage basis (Khaur
oilfield 1917).The study area is consisting of Fimkassar oil field and the seismic lines
were collected from Landmark Resources (LMKR) with the permission of Directorate
General of petroleum concession (DGPC) of Ministry of petroleum and natural
resources Islamabad with the help of Earth and environmental sciences department
Bahria University Islamabad. The study area consists of Fimkassar well-01, well-02 and
well-03 and seismic lines G884-FMK-101, G884-FMK-103, G884-FMK-104, G884-
FMK-105, G884-FMK-106, G884-FMK-107 and G884-FMK-108 of the Fimkassar oil
field. The 2D seismic study was carried out at OGDCL data interpretation centre for the
structural mapping of Fimkassar oil Field and its correlation with subsurface oil
producing structure along with the formation contributing for hydrocarbon in deeper
horizon of Northern Potwar Deformed Zone. With the help of seismic synform anticline
was identified with two major faults trending north east and south west. Oil area was
identified in the north east of structure and in the northern part of the known structure a
relative smaller high at deeper level was also identified in the south western side of the
structure. Time structure maps of the reflectors ware prepared for Chorgali Formation
and Sakesar Limestone using two way time of the reflectors. Time structure map was
converted into depth contour map for further clarity of the structure.
