Sequence Stratigraphy and Seismic interpretation of the Seismic Lines of Mianwali (east), PakistanMuhammad Jahangir Seismic Stratigraphic interpretation of 2-D seismic reflection data was carried out to evaluate the possible subsurface hydrocarbon plays. The project area (Mianwali East) lies on the North-western flank of Sargodha High. Sedimentary cover overlying the basement, range in age from Late Pre-cambrian to Recent in the area. Three important unconformities are present: Mid-Cambrian unconformity between Khewra Sandstone and Jutana formation, base Permian unconformity between Tobra formation and Bhaganwala formation and base Miocene unconformity between Siwaliks and Late Permian Amb formation. Five seismic lines of Mianwali (east) were given. Time contour maps, depth contour maps, iso-velosity graphs, time section graphs, depth section graphs were prepared. Two seismic lines 904-MWI-001 and 904-MWI-011 were selected for seismic sequence stratigraphic interpretation because well-developed seismic stratigraphic sequences were found named as SS-1 (seismic sequence 1) and SS-2 (seismic sequence 2) along with some descriptive features like onlaps and slope scar fill. It is concluded that slope scar fill are prone to be a good petroleum prospect because turbidites are deposited on such slopes. So, 3-D seismic data acquisition should be done for detailed and precise seismic sequence stratigraphic study. |
