Abstract:
The study area Dhulian is located near Pindi Gheb in the eastern Potwar,
Upper Indus Basin, Pakistan. The area lies in the compressional regime and has
complex thrust faulting. The Dhulian surface structure is an almost symmetrical
anticline with maximum dips of 30°to 35°. This fold axis trends ENE-WSW and
plunges about to 4°–5°at both ends, running en-echelon to the nearby Khaur fold.
Dhulian fold is flanked by Soan Syncline to the South and by the tight Pindi Gheb
syncline to the North. Dhulian is one of the major producing fields of Pakistan. The
foremost objective of research is mapping of subsurface structure, locating the
prospect zones and reservoir characterization. In order to conduct the research,
seismic interpretation along with advance techniques i.e. velocity inversion and
seismic attribute analysis is performed. Seismic structural interpretation marked the
anticlinal trap for hydrocarbon accumulation. Chorgali, Sakesar and Lockhart are
prospect reservoir formations. Seismic attribute analysis also supported above seismic
interpretation. Velocity inversion is performed to estimate the porosities, which gave
good porosities in the reservoir zone. Reservoir characterization is done through
Petrophysical analysis. Based on log trends, two reservoir zones of 5.1m and 3.5m
thickness were marked in Sakesar and Lockhart Formation respectively. Both zones
have favourable characteristics for hydrocarbon exploration.
