Oil prices settle higher as more production shut ahead of hurricane

Oil prices settled higher on Friday as Hurricane Isaias churned toward the northern Gulf of Mexico and oil companies shut more than 70% of crude production in US waters.

Earlier in the session, crude prices were down as US President Donald Trump said talks with Iran to end the war in the Middle East had been "productive." Trump also teased an upcoming, undisclosed announcement on diesel and said he was considering suspending the federal gasoline tax.

Brent crude futures settled at $104.72, up 44 cents or 0.42%. US West Texas Intermediate crude futures finished at $91.85 a barrel, up 36 cents, or 0.39%.

Plans by China, the world's top oil importer, to resume refined fuel exports after a brief halt during its Golden Week holiday, also weighed on the market. Reuters reported the development on Friday, citing sources. 

On a weekly basis, Brent and WTI prices are set to rise.

Trump's Iran pledge along with China's resumption of product exports were moving prices lower, PVM Oil Associates analyst Tamas Varga said. 

Prices have been volatile this week as threats to shipping in the Gulf and the Strait of Hormuz, which carried shipments equal to about 20% of global oil and fuel before the war, have increased.

Trump said on Thursday that Washington was having "productive discussions" with Iran and said no attack was planned before the November 3 midterm congressional elections after media reports that he was considering an attack before then.