Venezuela-based oil and gas company PDVSA failed to make the interest payment on its 2026 senior unsecured notes within the 30 calendar day grace period, which expired on Dec. 15, 2017. In line with our criteria for timeliness of payments, we're lowering the issue-level rating on the company's bonds to 'D' from 'CC'. On Dec. 18, 2017, S&P Global Ratings lowered its issue-level rating on Petroleos de Venezuela S.A.'s (PDVSA) senior unsecured notes due 2026 to 'D' from 'CC'. PDVSA hasn't met the coupon payment on its 2026 notes within the 30 calendar day grace period (or the bondholders hadn't received the funds by that date), constituting an event of default under our methodology (please see " Methodology: Timeliness Of