SUBSURFACE MAP GENERATION OF IDI RESERVOIR IN NIGER DELTA BASIN

ABSTRACT

An integrated approach using seismic information was employed for subsurface mapping of IDI reservoir of the Niger Delta basin. This study was aimed towards generating subsurface map, determining the subsurface structural features for hydrocarbon and predicting prospects of the reservoir. The methods employed include analysis of 3D seismic data using Petrel software: faults and horizon deductions from the seismic section were used to generate structural maps which revealed different structural styles present in the studied area an extraction of amplitude. A distinct horizon was mapped. From the horizon five faults (with two been major) were mapped for the purpose of carrying 3D subsurface structural interpretation. These were used in in generating the time structure maps using the Petrel Interpretational tool. The results show that the trapping mechanisms in the field are favourable for hydrocarbon accumulation. Two principal structural trapping mechanisms presents are the rollover anticline and the simple anticline. This study has demonstrated the importance of seismic structural interpretation in generation of subsurface maps of reservoir, understanding the structural styles present, amplitude extraction for prospect ranking.