Oil prices dipped in the international market on Thursday, pushed down by the news of U.S. crude inventories rising the most since 2016 last week. Brent crude futures fell 6.1%, to $24.74 a barrel. U.S. West Texas Intermediate (WTI) crude futures dropped to $20.31 a barrel. EIA data showed an unexpected rise of 13.8 million barrels in crude inventories last week.