Crude oil

https://www.wikidata.org/wiki/Q22656

Field Hierarchy

Parent
Engineering 25.7M papers	Geology 10.6M papers	Petroleum engineering 512k papers
Current
Crude oil 27.7k papers
Child
Midstream 1,795 papers	Demulsifier 1,579 papers	West Texas Intermediate 1,315 papers	API gravity 991 papers
Crack spread 987 papers	Oil-storage trade 924 papers	Brent Crude 882 papers

Trends

Notes

History