LONDON—Oil prices extended gains on Thursday, riding higher on growing fuel demand and a bigger-than-expected draw in U.S. crude inventories as production remains hampered in the Gulf of Mexico after two hurricanes. Brent crude rose 9 cents, or 0.1 percent, to $76.28 a barrel at 0856 GMT. U.S. West Texas Intermediate (WTI) crude was up 4 cents, or 0.1 percent, to $72.27 a barrel. Both contracts jumped 2.5 percent on Wednesday after data from the U.S. Energy Information Administration showed U.S. crude stocks in the week to Sept. 17 fell by 3.5 million barrels to 414 million—the lowest total since October 2018. “With Gulf of Mexico production returning slowly, and natural gas prices remaining sky high, the structural outlook for oil remains promising as OPEC+ struggles to meet even its current production quotas,” said Jeffrey Halley, analyst at brokerage OANDA. Several OPEC+ countries—including Nigeria, Angola and Kazakhstan—have struggled in recent …