Operations were suspended at the United Arab Emirates' Habshan gas facility as authorities responded to two incidents of fallen debris after the successful interception of a missile, Abu Dhabi's media office said on Thursday.
Bab oil field was also targeted, the office added. No injuries were reported.
Iran issued an evacuation warning for several oil facilities across Saudi Arabia, the UAE, and Qatar, saying they would be targeted by strikes "in the coming hours," Iranian state media reported on Wednesday.
Iran's huge Pars gas field was hit on Wednesday in a major escalation in the US-Israeli war that sent oil prices shooting higher, and Tehran struck Qatar and fired missiles at Saudi Arabia after vowing attacks on oil and gas targets throughout the Gulf.
Qatar's state oil giant QatarEnergy reported "extensive damage" after the Ras Laffan Industrial City, an energy-industry hub, was hit by Iranian missiles.
Saudi Arabia said it had intercepted and destroyed four ballistic missiles launched toward Riyadh on Wednesday and an attempted drone attack on a gas facility in the east of the country.
The escalation threatens to worsen an unprecedented disruption to global energy supplies that has raised the political stakes for U.S. President Donald Trump.
Diesel prices in the United States have already risen above $5 a gallon for the first time since the 2022 inflation surge that eroded support for his predecessor Joe Biden.
Iran warned on Wednesday that it would destroy the oil and gas industry of its Gulf neighbours, which it considers American interests, if its own energy sector is harmed again.
"We warn you once again that you made a big mistake in attacking the energy infrastructure of the Islamic Republic, the response to which is being implemented," the Revolutionary Guards announced, in a statement carried by Iranian media.
"If it is repeated, further attacks on your energy infrastructure and that of your allies will not stop until it is destroyed, and our response will be much more severe than tonight's attacks."
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