Oil traded near $53 a barrel after drilling in the U.S. climbed to the highest in more than a year, countering OPEC’s efforts to clear a supply glut. Futures were little changed in New York after falling 1.1 percent on Friday. Rigs targeting crude in the U.S. rose last week to the most since November 2015, according to Baker Hughes Inc., while American crude output is at the highest since April, government data shows. Oil supplies from OPEC are sliding this month, according to tanker-tracker Petro-Logistics SA. Oil has fluctuated above $50 a barrel since 11 nations including Russia last month joined with the Organization of Petroleum Exporting Countries to trim supply. While Saudi Arabia says more than 80 percent of the targeted cuts have been implemented since the deal took effect on Jan. 1, the International Energy Agency predicted a gain in U.S. shale output as prices rise. […]