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?

What are the two categories for core analysis tests?

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?

write equation for effective porosity

Which sample has the GREATEST porosity?

• sorted

• unsorted