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With the formula presented in the previous section, the API gravity can be readily calculated. When converting oil density to specific gravity using the above definition, it is important to use the correct density of water, according to the standard conditions used when the measurement was made.
Since API gravity is an inverse measure of a liquid's density relative to that of water, it can be calculated by first dividing the liquid's density by the density of water at a base temperature (usually 60 °F) to compute Specific Gravity (SG), then converting the Specific Gravity to Degrees API as follows: = =
The clear cut definition of light and heavy crude varies because the classification is based more on practical grounds than theoretical. The New York Mercantile Exchange (NYMEX) defines light crude oil for domestic U.S. oil as having an API gravity between 37° API (840 kg/m 3) and 42° API (816 kg/m 3), while it defines light crude oil for non-U.S. oil as being between 32° API (865 kg/m 3 ...
Heavy crude oil has been defined as any liquid petroleum with an API gravity less than 20°. [2] Physical properties that differ between heavy crude oils and lighter grades include higher viscosity and specific gravity, as well as higher molecular weight hydrocarbon composition.
The relationship between specific gravity (s.g.; i.e., water-specific gravity, the density relative to water) and degrees Baumé is a function of the temperature. Different versions of the scale may use different reference temperatures.
Heavy crude oils have lower API gravity figures, and a larger percentage of impurities. [9] ... They are represented by the formula C n H n, where n is a positive ...
API gravity Sulphur content (as % of mass) Operating company Location of field Port of sale Abu Bukhoosh 31.6° 2.0% Total Abu Al Bukhoosh Dubai: Abu Al-Bukhoosh Agbami 47.5° 0.044% Chevron: Nigeria: offshore Undisclosed Undisclosed Undisclosed Genel Energy/CPC Taiwan Somaliland: Central Somaliland oil fields Aktobe 41.6° 0.73% Kazakhstan ...
Its typical gravity is around 80 API. Natural gasoline is rather volatile and unstable, and has a low octane rating, but can be blended with other hydrocarbons to produce commercial gasoline. [4] It is also used as a solvent to extract oil from oil shale. [4] Its properties are standardized by GPA Midstream (formerly Gas Processors Association ...