Oil & Gas

Iran's hydrocarbon economy has two closely connected roles: supplying energy within the country and earning revenue abroad. Oil and natural gas should nevertheless be followed separately. Crude oil, condensate, and other petroleum liquids are not interchangeable statistical categories, while natural gas production must be distinguished from the volumes available after domestic use. The US Energy Information Administration, or EIA, documents the importance of both export markets and domestic consumption in its country analysis. s1

Large reserves do not establish how much energy can be delivered at a particular moment. The EIA identifies underinvestment and international sanctions as constraints on Iran's petroleum sector. Its analysis also connects gas availability with electricity generation, industrial activity, and seasonal demand. Reading the sector therefore requires attention to processing, transport, storage, and customers alongside the resources underground. s1

The International Energy Agency, or IEA, described a production system with limited spare capacity in its Oil 2025 report. Its account emphasized efforts by domestic firms to counter declining output from existing fields, including the development of equipment and technologies used to support recovery. Maintaining production is consequently a continuing investment task, rather than a one-time consequence of discovering a field. s2

The report also discussed expansion opportunities in the West Karun area and contracts intended to raise production. These descriptions establish the existence of development efforts and stated objectives; they do not demonstrate that the resulting capacity was completed. For a reader comparing project announcements, the useful distinctions are between a signed contract, installed facilities, tested capacity, and sustained output. The report's forward-looking assessments should retain their 2025 context. s2

This matters when interpreting export figures as well. The IEA reported that changes in Chinese purchasing affected Iranian shipments during 2025. A production opportunity and a dependable market are separate questions: commercial conditions can change even where a field continues operating. The report provides a dated assessment, rather than proof of export conditions at the October 2026 cutoff. s2

South Pars, the offshore field shared with Qatar, is central to Iran's gas system. On the Qatari side it is known as the North Field. The IEA's second-quarter 2026 gas report identifies South Pars as the cornerstone of Iran's gas-based economy and describes power generation, industry, and household and commercial users as major destinations for domestic supply. s3

The field's geography connects offshore production to processing facilities around Assaluyeh on Iran's Persian Gulf coast. Gas processing is an essential link between extraction and usable supply. The same IEA report describes Iran's pipeline exports to Iraq and Türkiye, showing that domestic infrastructure also has consequences for neighboring energy systems. s3

Selected links in Iran's gas system

The arrows describe selected physical supply relationships, not ownership or legal authority. The diagram omits other Iranian fields and processing facilities and does not establish uninterrupted flows.

The IEA's second-quarter 2026 report documented attacks affecting gas processing infrastructure in March and April. It explicitly described information about the effects on Iran's gas market as limited. Some assessments of damage and production effects were preliminary or based on local reporting, so they should not be treated as final engineering audits. s3

The earlier EIA analysis provides a different kind of baseline: it explains seasonal pressure, limited storage, and the relationship between gas shortages and alternative fuels in power plants. Those structural relationships help explain why energy abundance can coexist with delivery constraints, but a 2024 assessment cannot verify the operating condition of facilities after subsequent disruption. s1

A complete cutoff-date account requires verified information on repairs, actual production, export flows, and facility availability. Until that evidence is assembled, the defensible conclusion is that Iran's resource base, infrastructure capacity, and delivered energy supply must be evaluated separately. This page retains the distinction and leaves current operating conditions open for further research.