The Brent-WTI spread, the difference between the prices of Brent and West Texas Intermediate (WTI) crude oils, has narrowed considerably over the past several months. The spread, which was more than $23 per barrel ($/bbl) in mid-February, fell to under $9/bbl in April, and has ranged between $6/bbl and $10/bbl since then.

via Today in Energy http://www.eia.gov/todayinenergy/detail.cfm?id=11891