Oil & Gas Glossary 1.0
OIL & GAS TECHNICAL TERMS GLOSSARY
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Search Result for Porosity
absolute porosity
The percentage of the total bulk volume of a rock sample that is composed of pore spaces or voids. See porosity.
effective porosity
The percentage of the bulk volume of a rock sample that is composed of interconnected pore spaces that allow the passage of fluids through the sample. See porosity.
porosity
See formation pressure
contour map
A map constructed with continuous lines connecting points of equal value, such as elevation, formation thickness, and rock porosity
tight formation
A petroleum- or water-bearing formation of relatively low porosity and permeability.
zone
The term "zone" as applied to reservoirs, is used to describe an interval which has one or more distinguishing characteristics, such as lithology, porosity, saturation, etc.
matrix acidizing
The procedure by which acid flow is confined to the natural permeability and porosity of the formation. Compare fracture acidizing.
core analysis
Laboratory analysis of a core sample to determine porosity, permeability, lithology, fluid content, angle of dip, geological age, and probably productivity of the formation.
permeability (of a reservoir rock)
The ability of a rock to transmit fluid through the pore spaces. - A key influence on the rate of flow, movement and drainage of the fluids. There is no necessary relation between porosity and permeability. A rock may be highly porous and yet impermeable if there is no communication between pores. A highly porous sand is usually highly permeable. A measure of the ease with which a fluid flows through the connecting pore spaces of rock or cement. The unit of measurement is the millidarcy. Fluid conductivity of a porous medium. Ability of a fluid to flow within the interconnected pore network of a porous medium.