Oil rigs are seen at Vaca Muerta shale oil and gas drilling, in the Patagonian province of Neuquen, Argentina January 21, 2019.
On its first day as the front-month, Brent futures for December delivery settled $1.49, or 1.6%, lower at $90.71 a barrel, or down about 5% from where the November contract expired on Friday.
Analysts said some traders took profits after crude prices rose nearly 30% to 10-month highs in the third quarter.
Higher interest rates along with a stronger dollar, which makes oil more expensive for holders of other currencies, could dent oil demand.
A Reuters survey showed OPEC oil output rose for a second straight month in September despite cuts by Saudi Arabia.
Persons:
Agustin Marcarian, Brent, Gelber, Edward Moya, Scott DiSavino, Paul Carsten, Yuka Obayashi, Emily Chow, Marguerita Choy, David Gregorio Our
Organizations:
REUTERS, U.S ., . West Texas, New York Mercantile, Intercontinental Exchanges, U.S . Commodity Futures Trading Commission, Associates, U.S, . Federal Reserve, World Bank, ING, Organization of, Petroleum, Reuters, Thomson
Locations:
Vaca, Patagonian, Neuquen, Argentina, U.S, Europe, Germany, Britain, China, Iraq, Saudi Arabia, OPEC, Russia, New York, London, Tokyo