West Texas Intermediate shed more than $4 per barrel for the January contract in early Friday trading, adding to dramatic losses for the U.S. benchmark that greeted a Thursday decision from members of the Organization of Petroleum Exporting Countries to keep production levels static . Oil prices are at a four-year low and down more than 25 percent from their mid-summer levels. The decline in price is in part related to slow economic recovery and an increase in oil production from U.S. shale. “It is important to recognize that if the recent price trend continues, the long-term sustainability of capacity expansion plans and investment projects may be put at risk,” Libyan Deputy […]