	 oil netbacks up sharply in europe u s  oil netback values in complex refineries rose sharply in europe and firmed in the u s last friday from the previous week but fell sharply in singapore according to calculations by reuters pipeline the firmer tone to refining margins in europe and the u s relected higher prices for petroleum products particularly gasoline and support from  oil prices netback values for  oil refined in northern europe rose substantially following strong gains in gasoline prices there brent is valued at dlrs up cts a barrel or three pct from the previous week in the u s gulf sweet s rose in value by cts to dlrs for west texas intermediate up about pct sour grades in the u s gulf showed an increase of cts a barrel for alaska north slope up pct but netbacks for  oil refined in singapore fell sharply down cts to as much as cts a barrel as ample distillate supplies weighed on petroleum product prices attaka in singapore is valued at dlrs a decline of cts a barrel or pct from the previous week for refineries in the mediterranean netback values were mostly lower with declines of seven to cts the value of kuwait  fell cts to dlrs while iranian light fell cts to dlrs on the u s west coast netback values for ans cif l a also jumped sharply up cts a barrel or pct to dlrs on higher gasoline prices reuter 
