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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.
Use h for "per hour", d for "per day" and a for "per annum". t_per is used for tonne rates if a different time unit than that used for barrels is desired. mlt specifies whether to convert barrels, thousands of barrels, millions of barrels, billions of barrels or trillions of barrels.
Stack Tank Oil (STO) density (or API) may also be used by regulatory bodies to classify oil and oil products. Other properties such as Molecular Weight , saturated aromatic resin and asphaltene (SARA), refractive index , wax appearance temperature, asphaltene precipitation, and acid number , are also specified at Stock Tank conditions. [ 1 ]
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 ...
Since this is a measurement of mass, any conversion to barrels of oil equivalent depends on the density of the oil in question, as well as the energy content. Typically 1 tonne of oil has a volume of 1.08 to 1.19 cubic metres (6.8 to 7.5 bbl).
That translates to oil import prices of about $79 per barrel in 2030, higher than where fossil fuel is currently trading. But under the scenario where the world reaches net zero emissions mid ...
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To grow one pound of new muscle, most people need to consume around 1 gram of protein per pound of body weight per day, paired with consistent strength training, according to a 2017 systematic ...