Abstract:
Sawan field is located in the, Khairpur District, Sindh about 500 km north
of Karachi having coordinates 68° 58’ 19.5” E and 27° 02’ 22.7” N. It occupies
Sargodha Depression in lower Indus Basin. The profilic basin is located in the
South East of Pakistan. The lower Indus basin is dominated by the structural traps.
In the present work, an attempt has been made to correlate the results obtained by
well logs to obtain a stratigraphic model of the study area.
Well logs of Sawan 1 and Sawan 2 were acquired from Landmark
Resources (LMKR) with the prior approval from the Directorate General of
Petroleum Concession (DGPC). The foremost objective was to have an insight
about the petrophysical characteristics of the area.
Petrophysical evaluation of well Sawan 1 and Sawan 2 carried out to
highlight the reservoir area which included the selection of interval of interest
followed by Log interpretation. The volume of shale, porosity and density,
hydrocarbon saturation and water saturation was interpreted by using different
tools like gamma ray tool, porosity tool, density tool, resistivity tool, and sonic
tool. On the basis of petrophysical evaluation it was noted that Goru Formation
acting as a reservoir and the interbedded shale of lower Goru formation are acting
as secondary source rock.
