A U.S. government official, who spoke on the grounds of anonymity, said the Trump administration is "in the midst of an internal process" of considering exceptions called SRE waivers, or significant reduction exemptions.
U.S. sanctions on Iranian oil purchases are due to take effect on November 4.
The Joint Comprehensive Plan of Action, a deal reached in 2015 by the Obama administration, meant sanctions on Iran were dropped in exchange for Iran limiting its nuclear activities.
White House National Security Advisor John Bolton said only last week that the administration wanted to avoid all waivers and see Iranian oil and gas exports entirely staunched, but that it might not be able to achieve that aim.
President Trump made a decision to leave the deal and reimpose sanctions.
Reuters had reported on Friday that India would buy 9 million barrels of Iranian oil next month.
Washington is pushing allies to cut imports of Iranian oil to zero and will impose a new round of sanctions on Iranian oil sales in November.
Google Pixel 3 may be more expensive than iPhone XR
In this post, which will be updated regularly, we'll be looking at the latest rumors surrounding the Google Pixel Slate . Also, we might see a new version of the their Chromecast digital media player and even a Chrome OS tablet.
Brett Kavanaugh Sworn In as 114th Supreme Court Justice
Pumping their fists and carrying signs, a few hundred people climbed the east steps of the Capitol for the demonstration. Asked if she thought Kavanaugh did nothing wrong, the character said, "Listen, I think it's important to believe women".
Doctor Who: The first reactions are in for Jodie Whittaker's Doctor
Blogtor Who , another site dedicated to the show, said Whittaker was "utterly believable" in the starring role. How do they film Doctor Who? Viewers also enjoyed Whittaker's Huddersfield accent.
Oil dropped below $83 a barrel on Monday, pressured by expectations that some Iranian oil exports will keep flowing after the US reimposes sanctions, easing a strain on supplies.
Brent crude oil prices fell more than 1 percent on Monday after Washington said it may grant waivers to sanctions against Iran's oil exports next month, and as Saudi Arabia was said to be replacing any potential shortfall from Iran.
LONDON-Oil prices started the week under pressure, amid reports the USA could grant waivers to some buyers of Iranian crude when oil sanctions on the Islamic Republic go into effect next month.
Last week, India reduced gasoline and diesel prices to give relief to consumers against rising global crude prices caused by uncertainty over USA sanctions on Iran and OPEC's decision to raise output. New Delhi and Tehran have reportedly discussed reverting to rupee trade after November 4.
"Chatter that Saudi Arabia has replaced all of Iran's lost oil" is weighing on prices, said Stephen Innes, head of trading for Asia-Pacific at futures brokerage Oanda in Singapore.
In May, US President Donald Trump announced America's withdrawal from the Iran nuclear deal. "Iran's oil can not be replaced by Saudi Arabia". He said that nine million barrels of oil are expected to be purchased.