Abstract:
of faults indicates the extensional regime in the area. The faults are normal faults and form
horst and grabben structures. Prominent reflectors are marked and formations are identified
on seismic data. The expected reservoirs in the area are B sand and C sand of Lower Goru
Formation. The two way travel time and depth structure contour mapping of marked
reflectors is done on base map. Traps are identified on contour maps. The Lower Goru sands
are proven reservoirs in the study area and the surrounding fields. Therefore, accumulation of
hydrocarbons is most probable in the identified traps of both C sand and B sand of Lower
Goru formation in study area. The analysis of expected reservoirs B sand and C sand is done
using rock physics. The relationships between Vp, Vs, Porosity, Density, Depth, Vp/Vs and
Elastic Parameters help us to understand the changes in B sand occurred due to overburden,
tectonic activities, transition zones, increase in depth, porosity and due to the presence of
fluids in the reservoirs. The Vp, Vs, Porosity, Density, Depth, Vp/Vs and Elastic Parameters
are calculated on well data and their plots are drawn versus depth which show the changes in
their values at different depths. The Vp, Vs, Porosity and Poisson’s ratio calculated on
seismic lines are extended throughout the area using contour maps. The contour maps explain
the variations of calculated parameters in the area. The porosity of expected reservoirs is
identified to be good enough for accumulation of hydrocarbons. The higher values of
Poisson’s ratio in some areas show the presence of hydrocarbons and especially in the
identified structure location.
