U.S. crude oil prices have experienced significant fluctuations, falling below $80 a barrel for the first time since March, marking the biggest loss since January 8. This decline was followed by a rebound, as prices bounced back after reaching a seven-week low, driven by surging U.S. inventories. The oil market is set for its steepest weekly drop in three months, with the biggest drop occurring since early January and closing at a seven-week low.