Abstract:
The main objective of the study was to evaluate hydrocarbon potential of
Sanghar area in Southeren Indus Basin Pakistan by using wire line loging and seismic
line.The data had been issued by Land Mark Resources, Pakistan with the prior
permission of Directorate General of Petroleum Concessions, Pakistan. The seismic
section were analyzed structurally to assess the suitable trap and the petrophysical
analysis was carried out for the reservoir characterization.
The analyses revealed the general style of deformation leading to the
formation of a trapping facility for hydrocarbons. The petrophysical analysis
furnished that the Lower Goru Formation is the main reservoir in the area and having
the suitable attributes for a prospect. The area is under the Extensional Tectonic
Regime which produced the Normal faulting in the region.Major Horst and Graben
structures are formed due to process of rifting. The seismic sections are of lines 947-
SGR(N)-277, 947-SGR(N)-278, 947-SGR(N)-280, 896.SGR.390.the reflectors were
marked due to prominent reflection on the seismic section.root mean square interval
velocities are used for the calculation of average velocities to convert the given time
into depth.the reflector top lower goru is marked due to its prominent reflection on
seismic sections due to data quality.the depth of the reflector are found by using
velocities and one-way travel time.for the structural interpretation of the area .time
and depth contour maps are generated.well data of Chak-05 Dim South-01 was used
to mark the thickness of the indiviual formation on the geoseismic section.
To complete the above mentioned task, all logs were correlated to mark the
horizon of interest i.e. reservoir zone. In our case the reservoir existed in Lower Goru
Formation of the Cretaceous age. After the demarcation of reservoir zone to the quick
look interpretation for the Gamma ray and Resistivity Log.
