ABSTRACT
This study presents a comprehensive analysis of the sedimentological aspects and reservoir geometry assessment within the Niger Delta Basin, Nigeria, with a particular focus on the Idje field. The Idje field spans an area of 8.4 km^2, situated between Latitudes 4°31'49"N and 4°33'23"N and Longitudes 4°34'43"E and 4°36'17"E, positioned offshore on the continental slope at a water depth of approximately 1000 meters.Ten wells in the Idje field were extensively investigated, and their well logs, including gamma ray, resistivity, neutron, and density, were acquired and analyzed in digital ASCII format. These well logs were subsequently processed using Schlumberger PETREL 2009 software to generate continuous log profiles for the various wells. Petrophysical analysis was conducted using empirical formulae, yielding valuable petrophysical properties of the reservoirs. These properties encompassed storage volume, volume of oil resources, and volume of gas resources. Utilizing Golden Software's SURFER 9, contour maps were generated through krigging techniques, and 3-D surfaces were constructed to depict the reservoir's topography. The study's findings suggest that the reservoir in the Idje field has sedimentary dome characteristics, most likely due to an underlying shale diaper. The D-3 reservoir has substantial hydrocarbon resources, estimated at 32 billion cubic feet of gas and 15.8 million barrels of oil based on volumetric reserve estimations. Based on a 10,000 barrel per day production rate, the Idje field is predicted to be productive for about 4 years, at which point secondary and tertiary recovery procedures will need to be put into place.
