New York's main contract, West Texas Intermediate for April delivery, eased two cents to USD 98.18 in mid-morning trade, while Brent North Sea crude rose 11 cents to USD 107.50 for its April contract.
"The China data and the talks about the Ukraine referendum would be the prime events affecting oil today," Desmond Chua, market strategist at CMC markets in Singapore told AFP.
China on Thursday said that its industrial output rose 8.6 per cent year-on-year in the January-February period, the slowest rate since April 2009.
Crude prices, however, were supported by tensions in Ukraine's Crimea peninsula, where its self-declared leaders will hold a referendum that is expected to see voters choose to split from Ukraine.
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However, the West has called the vote illegal and warned Moscow of a serious backlash, with the US and EU preparing sanctions against those blamed for stirring the tensions.
But there are concerns the sanctions could disrupt oil supplies from Russia, a major energy producer and exporter of natural gas to Western Europe.