Table of Contents
What is a good API gravity?
Generally speaking, oil with an API gravity between 40 and 45° commands the highest prices. Above 45°, the molecular chains become shorter and less valuable to refineries.
What is the gravity of diesel?
0.82 – 0.95
Specific Gravity Resource
| Liquid | SG @ 60°F / 15.6°C |
|---|---|
| Diesel Fuel Oils 20 | 0.82 – 0.95 |
| Ethylene Glycol | 1.125 |
| Gasoline | 0.68 – 0.74 |
| Kerosene | 0.78 – 0.82 |
What is API specific gravity?
A specific gravity scale developed by the American Petroleum Institute (API) for measuring the relative density of various petroleum liquids, expressed in degrees. API gravity is gradated in degrees on a hydrometer instrument and was designed so that most values would fall between 10° and 70° API gravity.
What does SG mean in fluid mechanics?
specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance.
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 the specific gravity of condensate?
Condensate specific gravity ranges between 0.74 and 0.82 (60 to 40 °API), although values as high as 0.88 (as low as 29 °API) have been reported [21]. Material balance equations developed for dry gases can be used for a gas condensate reservoir as long as its pressure remains above the dew point.
What is specific gravity vs density?
Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m-3). It is therefore a relative quantity with no units.
What is the specific gravity of 38 degree API oil?
API Gravity to Specific Gravity and Density Chart:
| Degree API. | Specific Gravity. | Density (kg/m3). |
|---|---|---|
| 35 | 0,850 | 849,850 |
| 36 | 0,845 | 844,776 |
| 37 | 0,840 | 839,763 |
| 38 | 0,835 | 834,808 |
What is the difference between API gravity and density?
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 specific gravity of water?
to 1
Water has a specific gravity equal to 1. Materials with a specific gravity less than 1 are less dense than water, and will float on the pure liquid; substances with a specific gravity more than 1 are more dense than water, and will sink.