The widening spread between international oil benchmark Brent and U.S. benchmark West Texas Intermediate (WTI) buoyed heavy NGL last week, with the butanes and C5+ reaching their highest levels in over three months.

All NGL prices and margins except for ethane rose at both the Conway, Kan., and Mont Belvieu, Texas, hubs.

EnVantage Inc. noted in a report that, with crude production declining in Saudi Arabia, the spread has expanded again and inventory levels of butane are now tight in the Persian Gulf.  

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