Oil prices were mainly flat Thursday after weeks of gains, but analysts now question whether crude will continue that positive momentum given a lack of significant change in the supply side of the market. The global benchmark, Brent, is trading down 0.21% at $47.07 a barrel. Its U.S. counterpart, West Texas Intermediate, is trading up 0.18% at $45.41 a barrel. Earlier this month, major oil-producing nations failed to agree on a production freeze at Doha after Saudi Arabia appeared to walk away from any agreement that didn’t include geopolitical rival Iran. That reminded analysts of the inability of producers to coordinate production and that there is more oil that could enter the market from countries like Iran . “There’s been two attempts to freeze oil output which have both driven up the price, but fundamentally non-U.S. […]