Abstract:
The basic objective of the study is to get preliminary understanding of the
subsurface structural trend and stratigraphy of the cited area. Seismic data interpretation
eventually resulted in outcomes as time and depth contour maps. Dina block is a part of
Potwar sub-basin of the Upper Indus Basin of Pakistan. It is an anticlinal closure bounded
by a Main Thrust Fault and its Back Thrust Fault that were generated as a result of
collision of the Indian and the Eurasian Plates. Seismic lines 942-DNA-56, 942-DNA-74,
942-DNA-112 and 942-DNA-113 were shot by OGDCL and 942-DNA-68 was shot by
Mari. The seismic lines are dip and strike lines. Four reflectors namely Chorgali, Sakesar,
Hangu and Khewra Sandstone formations were marked on the seismic section on the
basis of depth and velocity information of these formations. Time contour maps of the
reflectors were produced using two way time of the reflectors. Average velocities were
used to find the depths of the formations for the seismic section.Petrophysical analysis of
Shahab-01 A indicates that the Chorgali Formation and Sakesar Formation have the
potential zones in it but the Chorgali Formation has more potential than the Sakesar
Formation.
