US crude fell about 20% to below US$15 a barrel on Monday, its lowest level in about two decades, as a coronavirus-triggered collapse in demand eclipsed a deal to cut output. West Texas Intermediate, the US benchmark, fell 18.7% to US$14.84 a barrel. Brent crude, the international benchmark, was off 1.5% at US$27.64 a barrel.
Oil markets on Friday remained weak as rising supply and concerns of an economic slowdown pressured prices, with U.S. crude now down by 20% since early October. U.S. West Texas Intermediate (WTI) crude oil futures were at US$ 61.63 per barrel.