Oil prices declined more than 3% on Friday and were headed for their third straight weekly fall amid a surge in supply as transit via the Strait of Hormuz resumed and multiple oil tankers exited the strait.
Front-month West Texas Intermediate crude futures dropped by 3.2% to $69.61 per barrel, while Brent futures slumped 3.6% to $72.59/bbl.
"Oil was on track for a weekly decline after transits through the Strait of Hormuz accelerated, although an attack on a cargo ship by an unknown projectile has renewed concerns about safe passage through the vital waterway," Saxo Bank analysts said.
Market bears largely shrugged off a fresh maritime security incident on Thursday when the Singapore-flagged container ship Ever Lovely was struck by an unknown projectile 7.5 miles off the coast of Oman.
While the UK Maritime Trade Operations report briefly renewed safety concerns and shook crew confidence, commercial vessels continued their transits through Friday.
Meanwhile, Saudi Arabia is expected to reduce its crude oil official selling prices for Asian buyers next month following a decline in spot crude markets, according to a Reuters survey of industry sources published Thursday.
On the supply side, daily production at Karachaganak oil and gas field in Kazakhstan dropped by 9,000 metric tons after a Ukrainian attack damaged Russia's Orenburg Gas Processing Plant, which receives feed from the field, several media outlets reported.
Saudi Aramco reportedly resumed crude oil loading at its giant Ras Tanura export terminal, marking Aramco's return to Persian Gulf exports after a four-month suspension.