Oil drops below $145 a barrel in Asia

SINGAPORE (AP) -- Oil dropped below $145 a barrel Tuesday in Asia although a series of threats to supply in a finely balanced market continues to keep a floor under prices.

"The oil market right now is fundamentally tight, which is why prices have been high and volatile," said David Moore, a commodity strategist with Commonwealth Bank of Australia in Sydney.

In midday trading in Singapore, light, sweet crude for August delivery was down 26 cents at $144.92 a barrel in Asian electronic trading on the New York Mercantile Exchange.

The contract rose 10 cents in Monday's floor session to $145.18 a barrel, just over a dime short of the all-time settlement high.

Threats to supply in Brazil, Iran and Nigeria have been keeping oil near the record levels hit last week.

A five-day strike by Brazilian oil workers that began early Monday has cut the production of Petroleo Brasileiro SA, or Petrobras by about 4 percent, according to the state-run oil company. Oil workers are striking at 33 rigs in a dispute over pay but only two rigs were totally stopped, Petrobras said.

Petrobras produces about 1.6 million barrels of oil a day. It is estimated to be the world's sixth largest oil company in terms of market capitalization.

Also, tensions remain between Iran and the U.S. and Israel over what the two allies say are Tehran's suspicious nuclear programs. Investors worry that any worsening of the standoff has the potential to disrupt shipments from OPEC's second-largest oil exporter.

Still, some analysts say they expect an easing of pricing later in the second half of the year.

Oil prices that have doubled in the past year have begun to weaken demand, said Moore.

"We've started to see weaker demand in the U.S., but we don't expect this to help lower prices until the fourth quarter," he said. He expects the price of oil to average about $143 in the third quarter and about $137 in the fourth.

Also, a weakening of the dollar helped to support commodity prices Tuesday. Many investors view oil and other commodities as hedges against inflation and a weakening dollar, and their prices tend to rise as the currency declines.

The dollar fell to 105.79 yen in Asian currency trade, while the euro strengthened to $1.5940.

On Monday, U.S. President George W. Bush lifted an executive ban on offshore oil drilling. That alone is not expected to loosen global supplies in the short term since a Congressional prohibition remains in place and any new wells would take years to complete.

August Brent crude fell 6 cents to $143.86 a barrel on the ICE Futures exchange in London.

In other Nymex trade, heating oil futures fell 0.08 cent to $4.0641 a gallon (3.8 liters) while gasoline prices added 0.03 cent to $3.558 a gallon. Natural gas futures fell 0.4 cent to $11.955 per 1,000 cubic feet.