The current discount that WTI crude has to Brent is likely to be
permanent, although it will narrow as pipelines carry more oil away from the
Cushing pricing hub in Oklahoma, says Total SA's (TOT) Chief Economist Pierre
Sigonney. 
	In previous decades, WTI traded at a premium to Brent, but the
reversal of oil flows from the US Gulf Coast to 
	Oklahoma
	,
following an increase in oil production in 
	Canada
	 and 
	North
  Dakota
	, means the premium will also be reversed, he says,
at the Platts Crude Oil Markets conference in 
	London
	.