Crude futures gained on Thursday as investors weighed ongoing Iran-Oman shipping negotiations against renewed Houthi attacks on Saudi oil tankers.
Brent crude futures rose 2.3% to $81.25 per barrel, while Murban crude futures rose 1.1% to $78.82/bbl.
Iran's Foreign Ministry spokesperson Esmaeil Baqaei said Iran and Oman are nearing a final understanding on a commercial shipping route through the Strait of Hormuz, according to the Ministry of Foreign Affairs' Telegram post on Wednesday.
The proposed framework would grant Tehran control over ships entering the Gulf through the strait, Reuters reported citing officials familiar with the matter.
"Looking ahead, oil markets are likely to stay conditioned by how diplomatic efforts evolve and any breakthroughs," said Ramy markets analyst Zeytouni.
"Further progress toward a deal could open the way for prices to ease as supply prospects improve. Conversely, renewed escalation could quickly revive upside risk as constrained shipping keeps supply conditions tight," Zeytouni added.
Sentiment was further complicated by renewed supply tensions following reports of Houthi missile attacks on Wednesday targeting a Saudi oil tanker off the Red Sea port of Yanbu and another in the Gulf of Aden.
On the supply side, US commercial crude oil inventories increased by 2.5 million barrels to 407 mmbbls in the week ended July 31, the Energy Information Administration said in its weekly report on Wednesday.
Meanwhile, Saudi Aramco lowered September crude premiums, for Arab Light crude to Asian buyers by $0.50 to $2/bbl below the Oman/Dubai average.