U.S. PUTS THE SQUEEZE ON IRAN'S OIL FIELDS

LONDON — As Washington wages a very public battle against Iran's quest for nuclear power, it is quietly gaining ground on another energy front: the oil fields that are the Islamic Republic's lifeblood.

Iran's oil industry has raked in record amounts of cash during three years of high oil prices. But a new U.S. campaign to dry up financing for oil and natural gas development poses a threat to the republic's ability to continue exporting oil over the next two decades, many analysts say.

The campaign comes at a moment of unique vulnerability for Iran's oil industry, which also faces challenges from rising domestic energy consumption, international isolation, a populist spending spree by President Mahmoud Ahmadinejad and trouble closing contracts with foreign oil companies -- a recipe for potential disaster in a nation with one of the world's largest reservoirs of oil.

"If the government does not control the consumption of oil products in Iran

If Iran were to suddenly stop exporting its 2.6 million barrels of oil a day, such as in the event of a military strike, world oil prices probably would skyrocket. But a gradual decline might be offset by other OPEC members, analysts say, particularly as Iraq increases its oil production and Saudi Arabia carries out plans for significant increases in its production capacity.

The efforts by the United States and its allies over the last few months to persuade international banks and oil companies to pull out of Iran threaten dozens of projects, including development of Iran's two massive new oil fields that could expand output by 800,000 barrels a day over the next four years.

"Many European banks which had accepted financing some oil industries projects have recently canceled them," Nejad-Hosseinian said.

In addition, banks are no longer granting letters of credit for delivery of some supplies, ministry officials say. And as nations such as Japan begin to back out of Iran oil development under U.S. pressure, the government in Tehran is being forced to dig into its own reserve funds to get crucial new projects off the ground.

But Nejad-Hosseinian said Iran had recognized the gravity of the threat and launched steps to head it off, including new "smart" rationing cards, scheduled for distribution in March to check skyrocketing sales of cheap gasoline, and an overhaul of Iran's historically stingy contract terms in an attempt to lure big oil companies into skirting the U.S. roadblocks.