Iranian oil production levels are static, showing U.S. sanctions pressures have yet to materialize.  With sanctions pressures looming over Tehran, production from OPEC’s third-largest producer, Iran, hasn’t yet been impacted, a Platts survey found. Commodity pricing group S&P Global Platts said total production from members of the Organization of Petroleum Exporting Countries in May was 31.9 million barrels per day, a 13-month low. Pipeline issues in Nigeria and chronic shortages from Venezuela contributed to the drop in output, its survey indicated. OPEC is in its second year of an effort to drain the surplus from the oil held by the world’s most advanced economies through coordinated production cuts. Compliance with the agreement so far is well over 100 percent and, according to Platts, much of that is attributed to “crushing debt, hyperinflation, labor troubles and crumbling oil infrastructure” in Venezuela. […]