State-owned Saudi Arabian Oil Co., or Aramco, has raised official selling prices for its high quality light crudes for April term supply, through Egypt 's Sidi Kerir oil terminal in the Mediterranean , by more than a dollar a barrel, traders who have seen the official notice said Tuesday.

The increase in prices is thought to represent Aramco's expectation of a pick-up in demand for light crudes in the
Mediterranean as a result of severe disruption to Libyan oil supplies due to political upheaval in the country since last month, traders said. The Mediterranean market includes refiners in Italy and France that have regularly imported Libyan oil in the past.

In contrast Aramco cut its prices for medium and heavy crudes being exported from the Sidi Kerir oil terminal, traders said.

On Saturday Aramco raised its April official selling prices for all its crudes to
Northwest Europe while raising its light crude values for term delivery into the Mediterranean .

Aramco officials have publicly said
Saudi Arabia would meet incremental demand arising from disruption to Libyan oil supplies, which is by and large made up of high quality sweet crude.

Before political unrest swept through the country,
Libya produced around 1.6 million barrels of oil a day, 1.3 million barrels of which were exported, according to the International Energy Agency.

The agency estimates that between 850,000 and 1 million barrels a day of Libyan crude output is now offline.

Saudi Aramco's crude oil official selling prices, in U.S. dollars a barrel, are as follows:

	
	To 
	Europe
	 from Sidi Kerir, as a differential to BWave: 
	
	Crude Apr Mar Change 
	Extra Light -1.10 -2.75 +1.65 
Light -3.25 -4.35 +1.10 
Medium -7.20 -6.90 -0.30 
Heavy -9.55 -9.30 -0.25