Core Analysis and Porosity

What are the routine core analysis tests (RCA)?

• Porosity

• Permeability

• Saturation

• All of the above

What is porosity?

• The fraction of the bulk volume of a material that is occupied by pores

• The total volume of a rock

• The weight of the rock

• The density of the rock

What is the difference between primary and secondary porosity?

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What are the two categories for core analysis tests?

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What is effective porosity?

• The ratio between the total pore volume and the bulk volume

• The ratio between the interconnected pore volume and the bulk volume

• The volume of water in the rock

• The volume of oil in the rock

If the porosity of a rock sample was determined by saturating the rock sample 100% with a fluid of known density and then determining, by weighing, the increased weight due to the saturating fluid, what would this yield?

If the rock sample were crushed with a mortar and pestle to determine the actual volume of the solids in the core sample, what would this yield?

what is the difference between fractures and vugs?

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write equation for effective porosity

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Which sample has the GREATEST porosity?

• sorted

• unsorted