How is API gravity calculated?

The American Petroleum Institute established API gravity measure as a measure of the density of petroleum liquids relative to water. The greater the API gravity, the less dense the liquid. The formula for API gravity is API = (141.5/SG) -131.5 where SG is the specific gravity of the petroleum liquid being measured.

What is the formula to determine gravity?

This law can be summed up with the equation F = ma, where F is the force, m is the mass of the object, and a is acceleration. Using this law, we can calculate the force of gravity of any object on the surface of the earth, using the known acceleration due to gravity.

What is API gravity explain?

API gravity is a commonly used index of the density of a crude oil or refined products. API stands for the American Petroleum Institute, which is the industry organization that created this measure.

How do you convert specific gravity to API?

API gravity can be estimated by the following method:

1. Divide 141.5 by the specific gravity of the liquid.
2. Subtract 131.5 from the resultant to obtain the API gravity.

How do you calculate specific gravity of oil?

Using the API to Specific Gravity Conversion formula, the oil specific gravity is calculated: SG(oil) = 141.5 / (°API+131.5) = 141.5 / (35+131.5) = 0.845.

What is API gravity in crude oil?

API gravity is measured as the inverse of the density of a petroleum liquid relative to water. The higher the API gravity, the lower the density of the petroleum liquid, so light oils have high API gravities.

What is F GMM R 2?

Description. Sir Isaac Newton’s universal law of gravitation (F=Gmm/r2) is an equation representing the attractive force (F) of two masses (m) separated at distance (r). Force is proportional to mass and distance, related by a proportionality symbol known as the gravitational constant (G).

What is the API gravity of heavy oil?

Light oil is characterized by an API gravity of at least 22°, and extra-heavy oil has an API gravity of less than 10°.

What is the difference between API gravity and specific gravity?

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.

Is API and specific gravity the same?

What is SG of crude oil?

Specific Gravity Resource

Liquid	SG @ 60°F / 15.6°C
Beer	1.01
Carbon Tetrachloride CCl4	1.59
Corn Oil	0.924
Crude Oil	0.79 – 0.86

What is API gravity of diesel?

The API gravity at 60°F (15.6°C) for No. 2 diesel fuel is between 30 and 42. The specific gravity, at 60/60°F, and the density, at 15.6°C, are between 0.88 and 0.82.

How do you calculate API gravity?

To calculate API gravity, you need to know the fluid’s specific gravity. Divide 141.5 by the fluid’s specific gravity and subtract 131.5. If that seems arbitrary, it is because the equation was designed for convenience’s sake.

How do you convert API to specific gravity?

To convert from specific gravity to API, divide 141.5 by the specific gravity, then subtract 131.5. The specific gravity that should be used is that from oil at sixty degrees Fahrenheit.

What is the difference between API and specific gravity?

Specific gravity is a ratio of the density of one substance to the density of another reference substance, which is usually water. API gravity itself is a specific-gravity measurement used by the oil industry to compare an oil’s density to that of water.

What does API gravity stand for?

API Gravity. API stands for the American Petroleum Institute , which is the major United States trade association for the oil and natural gas industry. The API represents about 400 corporations in the petroleum industry and helps to set standards for production, refinement, and distribution of petroleum products.