Abstract:
The study aimed to reveal the delineation of sub-surface structure and
hydrocarbon potential of target reservoirs through 2D seismic interpretation and
petrophysical analysis of Fimkassar oil field. Fimkassar-02 well (located in Chakwal
district) data and the six migrated seismic lines of Fimkassar area 782-CW-25, 77-CW-
4. 77-CW-5, 782-CW-10, 782-CW-13, 782-CW-29 have been acquired to explore the
hydrocarbon potential of Chakwal area. By using seismic principles and techniques, the
overall structure of Chakwal area from 2D seismic interpretation was evaluated.
Horizons of Chorgali and Sakesar formations were identified through td chart and
marked on seismic sections along with the major and back trust faults. Time and depth
contour maps generated on kingdom software also validated the popup and thrusted
anticlinal geometry delineated on seismic sections. Further validation has been done
through correlation of contour values depicted on the maps at the well point. In second
phase, petrophysical analysis of Fimkassar-02 well was done by marking zone of
interest criteria through log behavior and parameters. The calculation of different rock
properties like porosity, permeability, water saturation, hydrocarbon saturation was
done and their findings were represented through graphs. Sakesar Limestone showed
good reservoir properties with low volume of shale and high effective porosity and
saturation of hydrocarbon.
