Abstract:
Migrated seismic lines 944-FABS-39, 944-FABS-40, 944-FABS-41, 944-FABS-44, 931-
FABS-11, of Fort Abbas area Punjab Platform were obtained from Directorate General of
Petroleum Concessions(DGPC) for seismic interpretation and Well Logs of well Bijnot-01
were obtained for petrophysical evaluation. Most seismic lines are oriented NW-SE of the
Central Indus basin except for the seismic line 931-FABS-11 & 94-FABS-44 which is
oriented NE-SW. The information we required was given within the time section, which was
helpful in the conversion of the time section into depth section. These calculations helped in
subsurface interpretation of the area, which was the basic purpose of this project four
reflectors were marked with TopSamanasuk, Top Cambrian, Top Infracambrian, and Top
Basement formation. Fault was marked, and then time contour maps were generated. After
that time sections were converted into depth sections with the help of average velocity and
finally depth contour maps were generated, this helped to know the basic mechanism of the
tectonic movement in the area. The major cause has been the Normal Fault in the area that
evoked from the basement rock and form horst and graben structure. Hydrocarbon traps were
most possibly developed in the Horst &graben structure and are the prospective zones for
hydrocarbon accumulation of the Fort Abbas area.
Petrophysical evaluation of well Bijnot-01 was carried out to highlight the reservoir area
which included the selection of zone of interest followed by Log interpretation. The volume
of shale, porosity was interpreted. On the basis of Petrophysical Evaluation it was noted that
clastic reservoir Jodhpur sandstone have good shows of heavy oil and the reservoir of
Cambrian (Khewra Sandstone) bore good porosity and have good shows of oil but the
problem was the placement of well from where well can not flow with economical value. The
source rock distribution problem also exists in the area, so all these conditions make the well
very uneconomical so it was abandoned.
