Brent oil

Brent Crude is a major trading classification of sweet light crude oil that serves as a major benchmark price for purchases of oil worldwide. This grade is described as light because of its relatively low density, and sweet because of its low sulphur content. Brent Crude is extracted from the North Sea and comprises Brent Blend, Forties Blend, Oseberg and Ekofisk crudes (also known as the BFOE Quotation). The Brent Crude oil marker is also known as Brent Blend, London Brent and Brent petroleum.

The other well-known classifications (also called references or benchmarks) are the OPEC Reference Basket, Dubai Crude, Oman Crude, Urals oil and West Texas Intermediate (WTI). Brent is the leading global price benchmark for Atlantic basin crude oils. It is used to price two thirds of the world's internationally traded crude oil supplies.

Originally Brent Crude was produced from the Brent oilfield. The name "Brent" comes from the naming policy of Shell UK Exploration and Production, operating on behalf of ExxonMobil and Royal Dutch Shell, which originally named all of its fields after birds (in this case the brent goose). But it is also a backronym or mnemonic for the formation layers of the oil field: Broom, Rannoch, Etive, Ness and Tarbert.

...
Wikipedia