2-D Seismic Reflection Data Interpretation and Petrophysical Analysis of Fort Abbas, Central Indus Basin, Pakistan (P-1138) (MFN 3993)

Abstract

Fort Abbas concession is part of Punjab Platform which is a gentle eastward monoclinal rise at the central Indus Basin. Seismic lines 944-FABS-42, 944-FABS- 43, 944-FABS-48 and 944-FABS-49 shot by OGDCL in year 1994 in Fort Abbas area, were obtained from DGPC. The seismic lines under study area are dip and strike lines. Seismic lines 944-FABS-42 and 944-FABS-43 are strike while 944-FABS-48 and 944-FABS-49 are dip lines. Drilling of Fort Abbas well No. 01 was carried out to test the hydrocarbon potentials of Kussak and Khewra (Cambrian) and Salt Range Formation of Pre-Cambrian. Three prominent reflectors namely Sui Main Limestone, Lower Goru and Chiltan Limestone were marked on the seismic sections on the basis of depth and velocity information of these formations. Time contour maps of the reflectors were produced using two way time of the reflectors. Average velocities were used to find the depths of the formations for the seismic section. Based on these seismic maps the structure of the area was interpreted as a gently dipping broad monocline.