Oil edges up before producer talks on output curbs

Crude futures inched up on Wednesday, with investors waiting for talks between OPEC producers and other oil exporters on curbing output to end a glut in the global market. U.S. West Texas Intermediate (WTI) crude had gained 3 cents to $50.82 a barrel. Oil has rallied more than 13 percent in less than two weeks since OPEC proposed its first production curbs in eight years.