Earlier, oil prices had surged on worries about global supply after United States sanctions on Iran's oil exports take effect Nov 4.
Brent crude prices rose to a almost four-year high above above $82 a barrel on Tuesday after OPEC and its allies said they would stick to the plan they agreed to in June.
Zangeneh also welcomed the outcome of a meeting Sunday between OPEC members and the cartel's allies, which ended without any decision to further increase oil output despite Trump's call for lower prices.
Speaking at the UN General Assembly on Tuesday, Trump accused OPEC of "ripping off the rest of the world" by pushing for higher oil prices.
USA officials say they are ramping up pressure on allies and adversaries alike with a goal of shutting down all Iranian oil and gas exports by November 4, following Mr. Trump's decision to pull out of the global nuclear accord with Tehran in May. "It's good for peace and it's good for the shape of the global price of oil".
The US President has repeatedly blamed OPEC for high oil prices, to which the organization replied that it has no power to control crude prices.
The IIF said Iranian shippers were also providing generous payment terms and, in some cases, accepting euros and Chinese yuan instead of US dollars.
Iran to continue exporting crude despite fresh U.S. sanctions
US Secretary of State Mike Pompeo arrives for the signing of a trade agreement with South Koreak in NY on September 24, 2018. There will be an exchange of European goods without to Iranian oil, it won't involve money.
"It would be good for the price of oil for Iran to be able to sell it", the French leader said.
However, he did say that Seoul hasn't bought any Iranian crude "for three continuous months".
U.S. crude inventories rose by 1.9 million barrels in the week to September 21, according to U.S. Energy Information Administration (EIA) data.
Commerzbank said in a note that "the latest rise in oil prices is due primarily to Trump himself. he has focused the market's attention on the Iran sanctions again, even though the market is adequately supplied at present thanks to the increase in OPEC and Russian production".
"Undoubtedly the oil market is expected to be tight in coming months and, if OPEC's own numbers are to be believed, global oil inventories are to fall during the remainder of the year". Last week, gasoline stockpiles added 1.5 million barrels while distillate inventories went down by 2.2 million barrels.
USA officials, including President Donald Trump, are trying to reassure consumers and investors that enough supply will remain in the oil market and have pushed OPEC to raise output.