percentage porosity

См. также в других словарях:

• Porosity — or void fraction is a measure of the void (i.e., empty ) spaces in a material, and is a fraction of the volume of voids over the total volume, between 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… …   Wikipedia

• porosity — [pō räs′ə tē, pəräs′ə tē] n. pl. porosities [ME porositee < ML porositas: see POROUS + ITY] 1. the quality or state of being porous 2. the ratio, usually expressed as a percentage, of the volume of a material s pores, as in rock, to its total… …   English World dictionary

• porosity —    1. The ratio of the aggregate volume of interstices in a rock or soil to its total volume; generally stated as a percentage [10].    2. The ratio, usually expressed as a percentage, of the total volume of voids of a given porous medium to the… …   Lexicon of Cave and Karst Terminology

• porosity, effective —    1. The ratio, usually expressed as a percentage of the total volume of voids available for fluid transmission to the total volume of the porous medium [22].    2. The ratio of the volume of the voids of a soil or rock mass that can be drained… …   Lexicon of Cave and Karst Terminology

• porosity — /paw ros i tee, poh , peuh /, n., pl. porosities for 2. 1. the state or quality of being porous. 2. Geol., Engin. the ratio, expressed as a percentage, of the volume of the pores or interstices of a substance, as a rock or rock stratum, to the… …   Universalium

• Effective porosity — The term effective porosity lacks a single or straightforward definition. Even some of the terms used in its mathematical description (“Vcl” and “Vsh”) have multiple definitions. However, it is most commonly considered to represent the porosity… …   Wikipedia

• Oil in place — is the total hydrocarbon content of an oil reservoir and is often abbreviated STOOIP, which stands for Stock Tank Original Oil In Place, or STOIIP for Stock Tank Oil Initially In Place, referring to the oil in place before the commencement of… …   Wikipedia

• Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …   Wikipedia

• Well logging — Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · …   Wikipedia

• coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… …   Universalium

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium