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Integrated reservoir management in a Niger Delta oil rim field
Published in Cogent Engineering, 2020
Yetunde M. Aladeitan, Akeem O. Arinkoola, David O. Ogbe
For the initial placement, the wells were drilled at locations with high porosity-thickness weighted initial oil saturations, i.e., high HphiSoi. In this case, Soi is the initial oil saturation. Regions with high HphiSo were targeted for oil placement after satisfying the set saturation threshold. To optimize the placement of infill-well, a new HphiSo map is generated at any time to evaluate the saturations at potential locations of the well. In some cases, the location of a well can be optimized by comparing the well’s cumulative production of oil, water cut or gas-oil-ratio (GOR) from two or three candidate locations. In this case, the location that gives the highest cumulative oil production, lowest GOR and Water cut is selected. The gas wells are placed in the crestal region of the gas cap using the corresponding porosity-thickness weighted gas saturation HphiSg maps, where Sg is the gas saturation. Figure 3 shows a typical HphiSo map used to identify locations of production wells in the model.