At least half a million extra barrels of oil are expected to flow to world markets each day in June -- news that so far has done little to bring down prices from record-high levels.

Oil at close to $130 a barrel is worrying not just for consumers, but also for major oil firms and producer countries fearful of demand destruction and a potential price collapse.

"The price is scary," a senior western oil executive said. "The market may be poised for a big drop, especially if the speculators exit in a hurry."

So far, the highest profile predictions have been for further price rises.

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Goldman Sachs, the most active investment bank in energy markets, on Friday raised its forecast for oil prices in the second half of this year to an average of $141 a barrel.

Its research helped to push U.S. crude to its latest record of $127.82, while traders ignored news the world's biggest oil exporter Saudi Arabia had been pumping an extra 300,000 barrels per day (bpd) since May 10 and would maintain production levels in June.

The market also dismissed higher export goals for Iraq, which aims to raise shipments by at least 125,000 bpd in June.

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