Reservoir Characterization and Petroleum Prospectively Studies; A Case Studies of Niger Delta Basin, Nigeria.

Abstract

The 3-D geologic model of the X-Field presented in this study demonstrates application of a detailed reservoir characterization and modeling workflow for a field. The static modeling methodology incorporates seismic structural information, geologic layering schemes, and petrophysical rock properties .Fault polygons were used in building the structural model. Pillar gridding method was used in the fault modeling. The cell geometries have been kept orthogonal to avoid any anticipated simulation problems. In this research work, lithofacies modeling using wireline-log signatures, coupled with geologically constraining variables provided accurate lithofacies models at well to field scales. Differences in petrophysical properties among lithofacies and within a lithofacies among different porosities illustrate the importance of integrated lithological-petrophysical modeling and of the need for closely defining these properties and their relationships. Lithofacies models, coupled with lithofacies-dependent petrophysical properties, allowed the construction of a 3-D model for the X-Field that has been effective at the well scale.