A Newcomer's Guide to Oil and Gas: A 'SAFE' Matrix
As EngineeringToolBox.com shows, dividing 141.5 by the specific gravity of a crude oil (at 60 degrees Fahrenheit) and then subtracting 131.5 from the quotient gives you the API gravity:
API gravity = (141.5/specific gravity at 60˚F) – 131.5
To calculate the specific gravity of crude oil, simply add 131.5 to the crude's API gravity and divide the sum into 141.5:
Crude oil specific gravity = 141.5/(API gravity + 131.5)
"You can calculate API gravity from specific gravity, and vice versa," said Stevenson. "Most petroleum liquids have an API gravity between 10˚ and 70˚."
WANT TO SEE YOUR QUESTION ON RIGZONE? If you have a simple, easily answerable oil and gas technical question, please send it to us for possible inclusion in a future installment of "A Newcomer's Guide to Oil and Gas." Email your submission to Rigzone Senior Editor Matthew Veazey at firstname.lastname@example.org.
View Full Article
WHAT DO YOU THINK?
Generated by readers, the comments included herein do not reflect the views and opinions of Rigzone. All comments are subject to editorial review. Off-topic, inappropriate or insulting comments will be removed.