Analysts weigh OPEC price boost against hit from U.S. shale

Oil markets are starting to tighten, prompting industry analysts to raise their 2017 price forecasts, but they remain cautious that rising U.S. production could offset any major price gains from OPEC'S output deal. Brent crude futures will average $58.01 a barrel in 2017, according to a Reuters poll of 31 analysts and economists. The current forecast is slightly higher than the $57.43 forecast in the previous survey.  It is the second consecutive monthly poll in which analysts have raised t