Abstract:
The main purpose of the dissertation is to evaluate tectonic style and
hydrocarbon potential of the study area, in a part of Middle Indus Basin i.e. Dhodak
field and delineation of potential leads for future prospects. The methodology adopted
to accomplish this task includes; structural interpretation of 2-D seismic data,
petrophysical interpretation and hydrocarbon reserve estimation. Seismic data
analysis includes identification and marking of the different litho-logical horizons and
names them according to the depths after correlation with the well data. The
demarcation of different faults on these horizons is to develop the structural geometry.
Seismic time and depth mapping is used to develop structural models for different
marked stratigraphic horizons. From these models the concluded results differ from
the previously structural models in terms of faults identification and correlation and
interpretation of structure. Petrophysical analysis of the wells (Dhodak well-01 and
Dhodak well-05) provides the petrophysical properties (volume of shale and sand,
porosity, saturation of water and hydrocarbon and net pay zone) for the main reservoir
zones (Lower Ranikot Formation and Pab Sandstone) these parameters are further
used in the calculation of hydrocarbon reserve estimation. Hydrocarbon reserves
estimation results based on the current observed parameters showed different potential
for Dhodak gas and condensate field because of the difference in structural
interpretation. This dissertation may help in delineation of potential leads for future
prospects and further field development planning.
