API gravity: Difference between revisions

Revision as of 23:41, 31 October 2016

Revision as of 03:05, 17 November 2016

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* Extra heavy oil has an API gravity below 10.0° (i.e., greater than 1000 kg/m³)

However, not all parties use the same grading.<ref>Crude oil grades, Crudemonitor.ca, web PDF file: [http://www.crudemonitor.ca/quickfacts/misc/grades.pdf CMonitor-Gr-PDF] {{waybackwebarchive |url=https://web.archive.org/web/20071008191730/http://www.crudemonitor.ca/quickfacts/misc/grades.pdf |date=20071008191730October 8, 2007 }}</ref> The [[United States Geological Survey]] uses slightly different ranges.<ref>USGS FS2006-3133_508, web PDF file: [http://pubs.usgs.gov/fs/2006/3133/pdf/FS2006-3133_508.pdf USGS-508-PDF]</ref>

Crude oil with API gravity less than 10° is referred to as [[extra heavy oil]] or [[bitumen]]. Bitumen derived from [[oil sands]] deposits in Alberta, Canada, has an API gravity of around 8°. It can be diluted with lighter hydrocarbons to produce [[diluted bitumen]], which has an API gravity of less than 22.3°, or further "upgraded" to an API gravity of 31 to 33° as [[synthetic crude]].<ref>Canadian Centre for Energy Information. [http://www.centreforenergy.com/AboutEnergy/ONG/Oil/Overview.asp?page=2 "What is crude oil?"]. Retrieved on: 2012-09-10.</ref>