Abstract:
The Dhurnal oil field is located in the foreland belt of North Potwar Deformed
Zone (NPDZ) of the Potwar sub-basin and one of the main and oldest hydrocarbon
producing fields of the area. Dhurnal area lies in compressional regimes which result
pop-up geometry between back-thrust and the fore-thrust. This research encompasses the
petrophysical analysis using water saturation, resistivity of water, average porosity,
saturation of hydrocarbon and volume of shales. The present research study is conducted
on the Eocene Sakesar Formation for the detailed sequence stratigraphic interpretation
and reservoir characterization in Dhurnal area. The obtained data for the petrophysical
analysis and stratigraphic interpretation are in the form of Las file and well log data of
Dhurnal-01 and Dhurnal-02 wells. Resistivity of water in the Sakesar Formation in
Dhurnal-01 well ranges from 3.1% to 3.3% while in Dhurnal-02 well it ranges from 4%
to 4.5% and the hydrocarbon saturation in Sakesar Formation in Dhurnal-01 well ranges
from 72% to 75.5% whereas in Dhurnal-02 well ranges from 34.5% to 36.5%. The
decrease in Gamma ray log values indicate high system tract (HST), which follow
progradatinol geometry towards a regression base level. This pattern indicates shallow
marine slope environment. Gamma ray log values fluctuate over short period of time in
transgressive system tract (TST). In this short period of time the environment of
deposition is Estuarine Shelf and Shallow Marine.
