Oil rose slightly Tuesday ahead of a U.S. supply report that might show an improvement in demand, AP reported. Benchmark U.S. crude for January delivery was up 30 cents at $94.46 a barrel at midafternoon Bangkok time in electronic trading on the New York Mercantile Exchange. Brent crude, a benchmark for international oils, was down 46 cents at $110.54 a barrel on the ICE exchange in London.