Analysts: Iran can sustain oil exports block for up to two months before reducing production

• FGE NextantECA estimates Iran has about 90 million barrels of available onshore storage capacity, allowing it to maintain current production of around 3.5 million bpd for roughly two months without exports
• Energy Aspects assumes lower available storage of only 30 million barrels, suggesting Iran could maintain exports for just 16 days before capacity runs out
• Eight Iran-linked oil tankers have been intercepted since the blockade began Monday, with Iranian domestic refineries processing about 2 million bpd internally

Summary: Iran Oil Export Blockade Analysis

Key Development: The U.S. initiated a blockade of Iranian ports on April 13, 2026, preventing approximately 2 million barrels per day (bpd) of Iranian crude from reaching China, its primary destination.

Timeline to Production Cuts: Analysts differ on how long Iran can maintain current production levels before forced cutbacks:

• FGE NextantECA: Iran can sustain production for approximately two months without exports, potentially extending to three months with a modest 500,000 bpd production cut. They estimate 90 million barrels of available onshore storage capacity out of 122 million barrels total.

• Energy Aspects: More conservative estimate of only 30 million barrels available storage (based on Kayrros data), allowing just 16 days at current export levels of 1.8 million bpd before capacity exhaustion.

Production Context:

• Current Iranian production: ~3.5 million bpd
• Domestic refinery consumption: ~2 million bpd
• Historical storage peak: 92 million barrels (May 2020)

Blockade Enforcement: Eight Iran-linked tankers have been intercepted since Monday, including the Chinese-owned Rich Starry. U.S. military forces are actively turning vessels back through the Strait of Hormuz.

Market Implications: Production shutdowns would compound existing supply disruptions from regional conflict, further tightening global oil markets and supporting higher prices. Energy Aspects notes minimal impact on April production, but substantial cuts would be necessary if the blockade extends into May. Iran may deploy tankers as floating storage to delay production cuts.