Oil prices are likely to stay relatively weak for the rest of this year due ample supply from traditional Middle East producers and a resurgence of U.S. shale production, a Reuters survey forecast on Friday. Reuters monthly survey of 28 analysts predicted the global oil benchmark North Sea Brent crude LCOc1 would average $61.60 a barrel in 2015, close to current levels. So far this year Brent has averaged close to $58 a barrel, down from almost $100 in 2014. The Organization of the Petroleum Exporting Countries (OPEC) is likely to decide at its meeting in Vienna next week to keep its joint production target unchanged at 30 million barrels per day (bpd) but maintain output above that level, analysts said. “That should keep a lid on prices,” Carsten Fritsch, senior oil and commodities analyst at Commerzbank in Frankfurt, said. “The OPEC meeting will confirm the strategy of protecting […]