Seismic Interpretation and Reservoir Evaluation Utilizing 2-D Seismic Data and Wireline Logs of Bijnot-01 Well, Fort Abbas Field, Central Indus Basin, Pakistan

Abstract

Present study attempts to decipher the subsurface structure and reservoir characterization of Fort-Abbas
field, located in Punjab platform, Central Indus Basin utilizing 2-D seismic and wireline logs data. Four seismic lines,
944-FABS-42, 944-FABS-43, 944-FABS-48, 944-FABS-49 and wireline logs of Bijnot-01 well have been used for this
research work to delineate subsurface structures and demarcation of zone having fair potential of hydrocarbon
accumulation. Formation evaluation for hydrocarbon potential using the reservoir properties is also the foremost
objective of this research work. Based on the results of seismic data interpretation of Fort-Abbas field and integrating it
with formation tops and wireline logs data, three prominent reflectors have been marked i.e. Eocene Sui Main
Limestone, Cretaceous Lower Goru and Jurassic Chiltan Limestone. The structure of the area is interpreted as gently
dipping monocline. Based on the breakup of reflectors on seismic section, one normal fault is marked. Time and depth
contour maps are generated to demarcate lateral extension and closure of the reservoir. Based on interpretation of
wireline logs, a zone has been marked from depth of 504 m to 594 m (Datta Formation) as a favorable zone having
good potential for hydrocarbon accumulation. Saturation of hydrocarbon (Sh) in this zone is calculated as 57%.
Keywords: 2-D Seismic, Punjab platform, Fort Abbas field, petrophysics, wireline logs.