Measure of how heavy or light a petroleum liquid is compared to water
The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks.
API gravity is thus an inverse measure of a petroleum liquid's density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity. Although API gravity is mathematically a dimensionless quantity (see the formula below), it is referred to as being in 'degrees'. API gravity is graduated in degrees on a hydrometer instrument. API gravity values of most petroleum liquids fall between 10 and 70 degrees.
In 1916, the U.S. National Bureau of Standards accepted the Baumé scale, which had been developed in France in 1768, as the U.S. standard for measuring the specific gravity of liquids less dense than water. Investigation by the U.S. National Academy of Sciences found major errors in salinity and temperature controls that had caused serious variations in published values. Hydrometers in the U.S. had been manufactured and distributed widely with a modulus of 141.5 instead of the Baumé scale modulus of 140. The scale was so firmly established that, by 1921, the remedy implemented by the American Petroleum Institute was to create the API gravity scale, recognizing the scale that was actually being used.[1]
Petroleum Institute gravity, or APIgravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its APIgravity is greater than...
of crude oil according to APIgravity Low specific gravity ⇒ High °API value = paraffinic High specific gravity ⇒ Low °API value = naphthenic The UOP...
freely at room temperature. It has a low viscosity, low specific gravity and high APIgravity due to the presence of a high proportion of light hydrocarbon...
APIgravity, American Petroleum Institute gravity, is a reverse method to decide “the weight of petroleum liquids in comparison to water”. If the API...
_{H2O_{T}}}}\longrightarrow API_{Gravity}={\frac {141.5}{SG}}-131.5} Traditionally, VCF / CTL are found by matching the observed temperature and APIgravity within standardized...
or crude oil assays, specify important properties such as the oil's APIgravity. The delivery locations are usually sea ports close to the oil fields...
gravity of approximately 1.060. Vodka 80° proof (40% v/v) has a specific gravity of 0.9498. APIgravity Baumé scale Buoyancy Fluid mechanics Gravity (beer)...
or specific gravity is higher than that of light crude oil. Heavy crude oil has been defined as any liquid petroleum with an APIgravity less than 20°...
on refineries. A higher APIgravity indicates a lighter and lower density crude. Light crude falls under the 35-45 APIgravity range. West Texas Intermediate...
versatile design with high flexibility to process crudes of various APIgravities with a high degree of automation. MRPL has a design capacity to process...
comparatively heavy – the lighter has around 36 of APIgravity while the heavier has 20–25 of APIgravity. Both types are paraffinic and low in Sulphur. Nigeria's...
petroleum industry nomenclature in a number of areas: APIgravity, a measure of the density of petroleum. API number, a unique identifier applied to each petroleum...
used as a pricing benchmark in Singapore. Tapis is very light, with an APIgravity of 43°-45°, and very sweet, with only about 0.04% sulfur. While it is...
based on its American Petroleum Institute (API) gravity and by how much sulphur it contains. The APIgravity of a crude oil is a measurement of purity...
processes used in the upgrading. Typically, it is low in sulfur and has an APIgravity of around 30. It is also known as "upgraded crude".[citation needed]...
measurement, and even the particular measurement methodology. The Platts and Argus API and sulfur measurements are descriptions of WTI as assessed, while the NYMEX...
is produced in (e.g., West Texas Intermediate, Brent, or Oman), its APIgravity (an oil industry measure of density), and its sulfur content. Crude oil...
has an APIgravity of between 8° and 12° and a reservoir viscosity of over 10,000 centipoise although small volumes have higher APIgravities and lower...
(and sometimes still are) used in certain industries. Examples include: APIgravity, universally used worldwide by the petroleum industry. Baumé scale, formerly...
important tool in the refining process. Portals: Energy Chemistry APIgravity Cetane index K factor (crude oil refining) Octane rating Petroleum coke...
to drill API – American Petroleum Institute: organization which sets unit standards in the oil and gas industry °API – degrees API (gravity of oil) APPRE...
to be APIgravity 27-35 degrees and medium sour. Northeast crude oil production consists of approximately 30% API 27-35 medium-sour and 60% API 35-40...
ISBN 978-0-8247-4740-4. Look up lubricant in Wiktionary, the free dictionary. SAE-ISO-AGMA viscosity conversion chart Chart of APIGravity and Specific gravity...
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