Brent crude prices hit their lowest in 11 years on Monday, hounded by a relentless rise in global supply that looks set to outpace demand again in 2016.

Oil production is running close to record highs and with more barrels poised to enter the market from the likes of Iran, the United States and Libya.

The price of crude is set for its largest monthly percentage decline in seven years.

While consumers have enjoyed lower fuel prices, producers have cut spending and thousands of jobs and the world's richest exporters have been forced to revalue their currencies.

Brent futures fell by about two per cent to as low as $36.05 per barrel on Monday, their weakest since July 2004.

Brent crude prices have dropped by nearly 19 per cent this month, their steepest fall since the collapse of failed US bank, Lehman Brothers in October 2008.

US crude futures dropped 31 cents to $34.42 a barrel, their lowest since 2009.

"With OPEC not in any mood to cut production ... it does mean you are not going to get any rebalancing any time soon," Energy Aspects chief oil analyst, Amrita Sen, said.

"Having said that, long-term of course, the lower prices are today, the rebalancing will become even stronger and steeper because of the capex cutbacks ... but you're not going to see that until end-2016."

Investment bank, Goldman Sachs, believes it could take a drop to as little as $20 a barrel for supply to adjust to demand.

The price of oil has halved over the past year, dealing a blow to economies of oil producers such as Nigeria, which faces its worst crisis in years or Venezuela which has been plunged into deep recession.