Reservoir characterization using seismic inversion technique and geological modeling of Kadanwari area, central Indus basin, Pakistan (T-1554) (MFN 8634)

Abstract

The main target of the research work was to delineate the subsurface structure and hydrocarbon potential of Kadanwari gas field, Central Indus Basin Pakistan. Geologically the study area is situated on the South Eastern flank of the Jacobabad- Khairpur High. The Jacobabad-Khairpur high has played a key role in the formation of the hydrocarbon bearing traps in the study area. The area under investigation comprises a number of complex low relief, faults and dip closures with stratigraphic trapping components. B sand , C sand and G sand of Cretaceous aged Lower Goru Formation has been targeted. The seismic interpretation indicates the horst and graben structure along with several splay faults NW to SE in orientation. The attribute analysis specified the presence of sweet spots as direct hydrocarbon indicator at various sand packages whereas instantaneous phase attributed to identify continuation of reflectors at various levels. Only one hydrocarbon bearing zone was marked for formation evaluation of Lower Goru Formation with quantitative hydrocarbon potential of 65 to 70%, and computed average porosity between 14 to 20 % in the study wells. Isopach map and well correlation illustrated the reservoir extent in the study area whereas Model based inversion technique was employed for extension of porosity in the Kadanwari Gas Field