World oil prices were mixed in Asian trade Friday owing to supply concerns as non-OPEC members such as the United States ramp up production.
US benchmark West Texas Intermediate for delivery in February rose 14 cents to $94.10 a barrel in the afternoon after volatile morning trade.
European benchmark Brent crude for March was down 21 cents at $105.54. The February contract expired on Thursday.
Dealers fear "supplies may outstrip demand, fuelled by increased production from non-members of Organization of the Petroleum Exporting Countries (OPEC)", Phillip Futures said in a market commentary.
OPEC output in December fell to 29.44 million barrels per day, below the 30 million bpd ceiling set for the same month, it said.
However, Phillip Futures also noted that "US crude production climbed to a 25-year high of 8.16 million bpd last week, due to the shale oil and gas boom".
The 12-member OPEC said in its monthly report that demand for its oil was expected to fall in 2014 as the supply from non-members increases by an estimated 1.27 million bpd over 2013 to an average of 55.38 billion bpd.
Non-OPEC supply growth was revised higher and mainly came from the United States and Canada.
