Crude settled up $6.11 at $51.55 on Friday, as early gains on U. S. stocks helped offset government data showing a arger-thanexpected 3.9 million-barrel build in U. S. crude stocks to a 19-year high last week.
Natural gas futures ended lower on Friday as mild weekend forecasts, growing supplies and a weak economy continued to weigh on sentiment.
The International Energy Agency (IEA), said that it can’t rule out the possibility of an oil supply shortage in 2013-14 because of slower investments in oil exploration and production by OPEC and other oil producing countries.