deg API conversion

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deg API conversion

Postby gpguj » Tue Aug 28, 2007 5:48 pm

Consider 1000 bbl of 30 deg API oil:
What metric volume [cum] and what mass [kg] would be equivalent?
gpguj
 
Posts: 1
Joined: Tue Aug 28, 2007 5:38 pm

Re: deg API conversion

Postby Guest » Tue Aug 28, 2007 8:38 pm

gpguj wrote:Consider 1000 bbl of 30 deg API oil:
What metric volume [cum] and what mass [kg] would be equivalent?


1 bbl = 42 US gallons
1 US gallon = 3.7854 L
so 158987 L, roughly 159 m^3
at the reference temperature of 60 degrees F used in the US petroleum industry. A small correction would be needed to 15 degrees C (59 F) commonly used elsewhere. The volume would be slightly less at 15 C.

API degree is an obscure way of expressing specific gravity vs water, both at 60 F

SG = 141.5/ (API +131.5)
and water at 60 F weighs 8.3282 lb/gallon (in air) or 8.3372 lb/gallon in vacuum.

Using the air figure (common commercial weighing), 7.2968 lb/gallon or 306467 lb.
At 0.4536 kg/lb, 139014 kg, or about 139 t.
Guest
 


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