Abstract
This study aims to set up a 3D static model to characterize and evaluate Mishrif Formation which represents the main reservoir in Buzurgan Oilfield, southern Iraq. Six wells have been selected to set up structural, facies and petrophysical models of Mishrif reservoir by using Petrel Software. The structural model has been built based on the structural contour map of the top of Mishrif Formation, which derived from seismic interpretation, and by using different static algorithms in Petrel Software. The structural model showed that the Buzurgan Oilfield represents an anticlinal fold with two domes north and south separated by a depression. The petrophysical model included the porosity model and water saturation model. The results of petrophysical models showed lateral and vertical variations in the porosity and water saturation characteristics of the Mishrif reservoir. The integration between the structural and petrophysical models illustrated that the main productive zones in Mishrif reservoir are MB21, MC1 and MC2 units.
Highlights
Reservoir modelling plays an essential role in producing and developing hydrocarbon reserves, due to it captures the heterogeneity in reservoir characteristics, especially permeability which will impact reservoir performance
This study aims to set up a 3D static model of the Buzurgan oil field to define the areal distribution of the main properties of Mishrif reservoir such as porosity, permeability, and water saturation
The reservoir model of the Buzurgan oil field has been set up based on the well data and structural contour map of the top of Mishrif Formation, and by using Petrel software
Summary
Reservoir modelling plays an essential role in producing and developing hydrocarbon reserves, due to it captures the heterogeneity in reservoir characteristics, especially permeability which will impact reservoir performance. A reservoir model is a series of twodimensional maps and well correlations, an inverted seismic volume defining the distribution of lithology and fluids in a section or a three-dimensional geocellular grid [1]. The oil field was discovered in 1970, and its development started in 1976. This study aims to set up a 3D static model of the Buzurgan oil field to define the areal distribution of the main properties of Mishrif reservoir such as porosity, permeability, and water saturation. This static model will form the basis for the dynamic modelling of the field to simulate the fluid flow through the reservoir
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