API gravity: Difference between revisions

Revision as of 16:08, 12 March 2017

Revision as of 23:50, 6 April 2017

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==Classifications or grades==

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.<ref>{{cite web|title=Comments on Crude Oil Gravity Adjustments|url=http://dnr.louisiana.gov/sec/execdiv/techasmt/oil_gas/crude_oil_gravity/comments_1989.htm|archive-url=https://web.archive.org/web/20060502160519/http://dnr.louisiana.gov:80/sec/execdiv/techasmt/oil_gas/crude_oil_gravity/comments_1989.htm|dead-url=yes|archive-date=2 May 2006|publisher=Louisiana Department of Natural Resources|accessdate=6 January 2014}}{{dead link|date=September 2016|bot=medic}}{{cbignore|bot=medic}}</ref>

[[Crude oil]] is classified as light, medium, or heavy according to its measured API gravity.

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==External links==

*[https://web.archive.org/web/20140728125404/http://dnr.louisiana.gov/assets/docs/oilgas/productiondata/comments_1989_rev.pdf Comments on API gravity adjustment scale]{{dead link|date=October 2016 |bot=InternetArchiveBot |fix-attempted=yes }}

*[http://www.globalsecurity.org/military/library/policy/army/fm/10-67-1/APPI.HTML Instructions for using a glass hydrometer measured in API gravity]

*[http://engineeringunits.com/api-gravity-calculator/ API Gravity Calculator]