Abstract:
The main rationale of this study is to evaluate the hydrocarbon potential using
well log data of Nara-01, Miano Block, Lower Indus basin, Pakistan. The well under
study lies in Sindh monocline which is bounded in north east by Sukkur rift, in south
by Arabian sea, in west by Karachi depression and in northwest by Kirthar
depression. Miano Block carries large amounts of oil and gas reserves. The above
mentioned well was exploratory. The target horizon has been Lower Goru Formation
of Cretaceous age. For evaluating the hydrocarbon potential at reservoir level, one
zone is identified and is marked through log analysis. Various physical properties like
porosity, resistivity, volume of shale, are calculated through different logs suites. In
Lower Goru Formation (sand A), the average values of volume of shale are found
45.74 %, effective porosity 11.18%, saturation of hydrocarbons 32.80% and
saturation of water is 67.19%. On the basis of calculated parameters through
petrophysical analysis, it is concluded that in Nara-01, Lower Goru Formation is
showing high water saturation.
