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Petrophysical Model Updating

Competency Statement:

Update the petrophysical model of the reservoir.

Learning Objective:

Upon completion of this module, the participant should be able to use well logs, cores, correlations and other tools to establish the distribution of petrophysical properties in the reservoir.

Assignment Instruction:

Reservoir quality is determined primarily by the distribution of petrophysical properties such as porosity and permeability, pore size distribution and pore geometry, and the presence of pore-filling materials that may have an effect on productivity or hydrocarbon recovery efficiency. Other important factors, such as relative permeability and capillary pressure relationships, are related to rock wettability and capillary pressure effects. Thus, in order to fully describe reservoir quality, it is necessary to have a knowledge of the composition and characteristics of the reservoir fluids, as swell as the rock pore system.

In this assignment, you will determine reservoir properties for input into the Upper/Middle Sands petrophysical model. By the time you complete this assignment, you should be able to use well logs, cores, correlations and other tools to establish the distribution of petorphysical properties in the reservoir.

The exploration/appraisal program for the Upper/Middle Sands has been completed, and the reservoir is currently entering its first development year. Wells drilled and evaluated to date are 4E1-NE, 5C1-SW (suspended), 2A5-NE, 5A1-SW and 5A2-SE.