Porosity is defined as the ratio of the volume of pores to the volume of bulk rock and is usually expressed as a percentage.

Why is porosity important in oil production?

Permeability is the ability of fluids to travel through porous rocks. If a well is to be successfully produced, the reservoir must have porosity, permeability and enough pressure to move the oil and natural gas to the well bore.

What is porosity and types?

Four basic porosity types can be recognized in sandstones: (1) intergranular (primary), (2) microporosity, (3) dissolution (secondary), and (4) fracture (Figure 2). Intergranular porosity exists as space between detrital grains. … Fracture porosity is the void space associated with natural fractures.