Oil prices closed higher after a volatile session that saw the New York price drop below US$44 a barrel for the first time since March 2009.
While the market remained worried about the global glut of crude, the US benchmark futures contract, West Texas Intermediate for March delivery, finished up US8c to close at US$44.53 a barrel yesterday, after falling as low as US$43.58.
Brent North Sea crude for March, the key European contract, also swung sharply before settling at US$49.13 a barrel in London, a gain of US66c from Thursday's closing level.
The sharp swings followed Thursday's stiff losses, which came on another surge in US crude stockpiles.
"Yesterday's inventory reports continue to fuel fears, with excessive supplies on the market," said Gene McGillian of Tradition Energy.