TEHRAN, July 8 — A newly released internal assessment from the National Iranian Oil Company (NIOC) places the state-owned enterprise at the center of a deepening tension between production capacity and actual output, according to the filing reviewed by InfoPulse Today. The document, dated early 2025, confirms that NIOC’s installed production capacity stands at 3.8 million barrels per day, but actual output has been constrained to 3.2 million barrels per day. The gap is attributable directly to international sanctions, the record shows.
The NIOC, founded in 1951, controls all of Iran’s upstream and downstream oil operations under state authority. The filing notes that Iran holds proven oil reserves of 208 billion barrels as of 2024, the fourth-largest globally after Venezuela, Saudi Arabia, and Canada.
Fields and Infrastructure
Iran’s largest oil field, Ahvaz, contains 65 billion barrels of recoverable reserves, according to the NIOC assessment. The Marun field holds 22 billion barrels, and the Gachsaran field contains 15 billion barrels. The export infrastructure depends overwhelmingly on a single facility.
The Kharg Island terminal, located in the northern Persian Gulf, handles 90 percent of Iranian crude exports. Its designed capacity is 5 million barrels per day.
Sources familiar with the terminal’s operations describe it as both the crown jewel of Iran’s oil export system and its single point of vulnerability. Adjacent to Kharg Island lies the Strait of Hormuz, the narrow waterway through which roughly one-fifth of the world’s oil passes. The filing describes the strait as a critical chokepoint, a designation that carries renewed weight given the current geopolitical climate.
Natural Gas Dominance
Beyond crude oil, the NIOC filing underscores Iran’s position as the holder of the world’s largest natural gas reserves, totaling 1,200 trillion cubic feet. The vast majority of this gas lies in the South Pars field, a massive offshore structure that Iran shares with Qatar. The South Pars development has been a priority for NIOC for decades, though sanctions have slowed foreign investment and technology transfers needed for full-field development.
The filing does not provide a current production figure for the field.
Strategic Calculus
On the timeline, the gap between capacity and actual output has widened since the reimposition of U.S. sanctions in 2018. The Trump administration, which returned to office in January 2025, has maintained a policy of maximum pressure on Iranian oil exports. The NIOC filing does not address specific diplomatic negotiations, but the numbers tell their own story.
The 600,000 barrels per day of idle capacity represent more than just lost revenue. They represent a strategic buffer that Iran cannot currently use.
Should sanctions be relaxed or lifted, the NIOC could theoretically ramp up production relatively quickly, given that the wells and infrastructure already exist. What to watch next: The Kharg Island terminal’s throughput numbers in the coming quarters will provide the clearest signal of whether sanctions enforcement is tightening or loosening. The NIOC’s next public production data, expected later this year, will show whether the gap between capacity and output has narrowed or widened.
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