3D Geocellular Modelling and Reservoir Properties Quantification: A Case Study of “X-Field”, Niger Delta, Nigeria

Bamidele, F.O¹, Olugbenga A. Ehinola², Adelola Adesida³ (1) University of Ibadan, Nigeria, Oyo State, Nigeria (2) University of Ibadan, Ibadan, Nigeria (3) The Federal University of Technology, 340001 Akure, Nigeria

Facies distribution and petrophysical properties of “X-Field” offshore Niger Delta were modelled using high-resolution geocellular grids. The dataset comprised of 3D Seismic volume, log suites and check shots data. Three horizons and two faults were identified and correlated using interactive facies interpretation while the facies/parameters distribution was done using semivariogram analysis and Sequential Gaussian Simulation.

The results show background floodplains and channel fills identified within the interval depth range of 4,600 – 6,800 ft (~ 1,153 to 2,267 m). Porosity values obtained was between 0 and 0.275 that indicate low and high effective porosity, respectively.

The distribution patterns of the various depositional facies in the study area have been presented graphically and their reservoir properties quantified and interval of interest delineated. The information provided in this study could be used for geological model simulation and to accurately locate targets.