By Moming Zhou
NEW YORK (MarketWatch) -- Natural-gas futures erased their earlier gains Thursday, heading lower as the Energy Information Administration data showed a smaller-than-expected drop in U.S. inventories last week. Natural gas stockpiles fell 166 billion cubic feet in the week ended Dec. 18, the EIA said. Analysts surveyed by Dow Jones had expected a drop of more than 170 billion cubic feet. After the data, January natural gas futures lost 0.7% to $5.78 per million British thermal units. It was up more than 1% before the data.
