Oil edged up to $51 a barrel on Wednesday after reaching its lowest since June 2017 on perceptions that a price slide prompted by worries over the global economy had been overdone amid an OPEC-led effort to tighten supply. Crude has been caught up in wider financial market weakness as the U.S. government shutdown, higher U.S. interest rates and the U.S.-China trade dispute unnerved investors and exacerbated worries over global growth. Brent crude LCOc1, the global benchmark, was up 43 cents at $50.90 at 0949 GMT. It earlier fell to $49.93, the lowest since July 2017, and posted a 6.2 percent slide in the previous session. U.S. crude CLc1 was […]