LONDON - Oil prices hit nine-month lows on Monday before recovering to stand higher on the day in choppy trade, as recession fears and a strong dollar spooked the market where participants were waiting for details on new sanctions on Russia.

Brent crude futures for November settlement were up 72 cents, or 0.8%, at $86.87 a barrel, having earlier fallen as far as $84.51, the lowest since Jan. 14.

U.S. West Texas Intermediate (WTI) crude for November delivery dropped as far as $77.21, the lowest since Jan. 6, but was last up 86 cents, or 1.1%, at $79.60.

Both contracts had slumped by about 5% on Friday.

Disruption from the Russia-Ukraine war has hit the oil market, with European Union sanctions banning Russian crude set to start in December along with a plan by G7 countries for a Russian oil price cap looking set to tighten supply.

But Bloomberg reported on Monday that EU countries were struggling to agree to a price cap as some raised objections, pushing prices into positive territory.

Meanwhile, the dollar index that measures the greenback against a basket of major currencies climbed to a 20-year high. A stronger dollar tends to curtail demand for oil which is priced in the U.S. currency.

The impact of a strong dollar on oil prices is at its most pronounced in more than a year, Refinitiv Eikon data shows.

Meanwhile, interest rate increases imposed by central banks in numerous oil-consuming countries to fight surging inflation has raised fears of an economic slowdown and accompanying slump in oil demand.

"With more and more central banks being forced to take extraordinary measures no matter the cost to the economy, demand is going to take a hit which could help rebalance the oil market," said Craig Erlam, senior market analyst at Oanda in London.

Attention is turning to what the Organization of the Petroleum Exporting Countries (OPEC) and allies led by Russia, together known as OPEC+, will do when they meet on Oct. 5, having agreed at their previous meeting to cut output modestly.

However, OPEC+ is producing well below its targeted output, meaning that a further cut may not have much impact on supply.

Data last week showed OPEC+ missed its target by 3.58 million barrels per day in August, a bigger shortfall than in July.

(Reporting by Noah Browning, Additional reporting by Mohi Narayan in New Delhi and Sonali Paul in Melbourne, Editing by Kirsten Donovan)