دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the measure of the density or gravity of liquid petroleum products in the United States;derived from relative density in accordance with the following equation: API gravity at 60ﾰF = [141.5 + relative density 60/60ﾰF] -131.5 API gravity is expressed in degrees, 1 D. API being equivalent to 1.0, the specific gravity of water. See gravity.

n: A measure of the density of liquid petroleum products, expressed in degrees. It can be derived from the following equation: API gravity (degree) =141.5/specific gravity-131.5

the relative density of a hydrocarbon based on a scale of degrees API. Density in g/cc = (141 / (131 +API)).

n: see Buys-Ballots law. barite n: barium sulphate, BaSO4;a mineral frequently used to increase the weight or density of drilling mud. Its relative density is 4.2 (i.e., it is 4.2 times denser than water). See barium sulphate, mud.

n: calcium carbonate, CaCO3

n: CaCO3, a natural calcium carbonate. Its relative density is from 2.6 to 2.8. A kind of heavy loader.

calcium carbonate, CaCO3. May be rock (limestone) or a scale formed from super saturated solution at the site of a chemical or physical upset.

n: a device that measures the specific gravity or relative density of a gas, liquid, or solid.

n: the mass or weight of a substance per unit volume. For instance, the density of a drilling mud may be 10 pounds per gallon, 74.8 pounds/cubic foot, or 1,198.2 kilograms/cubic metre. Specific gravity, relative density, and API gravity are other units of density.

n: Mass per unit volume expressed in pounds per gallon (ppg),grams per cubic (g/cc),or pounds per cubic ft (lb/cu.ft). Drilling-fluid density is commonly referred to as mud weight.


the mass per volume of a substance. Density of fresh water is 8.33 pounds per gallon or 1 gram/cc.

n: filling compounds hydraulic pressure collapse strength range from several hundreds to several thousands Kpa,diameter is 20 to 200 ,wall thickness is 0.5 to 2 , relative density is 0.15 to 0.4

n: 1. the attraction exerted by the earths mass on objects at its surface. 2. the weight of a body. See API gravity. relative density, specific gravity.

n: the ratio of weight of equal volume of two sunbstances, one of which is taken as a standard. Water is taken as a standard of comparison for liquids and solids ( specific gravity ). For gas, air is usually taken ,although hydrogen is sometimes used.

n: (GSV) the total volume of all petroleum liquids and sediment and water, excluding free water, corrected by the appropriate temperature correction factor (Ctl)for the observed temperature and API gravity, relative density, or density to a standard temperature such as 60�F or 15�C, and also corrected by the applicable pressure correction factor (Cpl) and meter factor.

n: a kind of nature Fe2O3 mine with a relative density of 4.9-5.3 and easy to acidify ,usually used as adulterant of drilling fluid which is used in drilling the high pressure formation

a natural deposit of iron oxide.

n: a kinds of bottle that measures the relative density of all kinds of special inertial mud fluid powder material.