The North Field: Qatar's Gas and the LNG Dimension of Hormuz
Beneath the shallow waters of the Gulf, shared between Qatar and Iran, lies the North Field — the largest single natural gas reservoir on earth. The Qatari portion is developed. The Iranian portion, called South Pars, is partially developed and severely constrained by sanctions and investment restrictions. What happens to the gas that Qatar extracts from its side of the reservoir determines energy supply conditions for electricity consumers in Japan, industrial gas buyers in South Korea, and power generators across Europe. All of it moves through Hormuz.
Qatar’s LNG industry has been built around long-term purchase agreements with buyers who need certainty. Japanese utilities, Korean industrial conglomerates, Chinese state energy companies, and European gas importers have signed contracts running twenty years and longer, committing to purchase fixed volumes at prices linked to oil benchmarks. These contracts underpin the financing of the liquefaction trains, the LNG carriers, and the regasification terminals that constitute the global LNG supply chain. They also mean that a Hormuz disruption does not simply redirect LNG to other markets — the contracts specify delivery, and non-delivery triggers penalties and supply chain disruptions that ripple through importing economies.
Qatar has used the North Field’s scale to build a geopolitical position that its small size and limited military capacity would not otherwise support. The country hosts the largest American military base in the Middle East at Al Udeid, which provides a security guarantee that Doha values precisely because its neighbors have proven willing to use economic and diplomatic pressure against it. The 2017-2021 blockade by Saudi Arabia, the UAE, Bahrain, and Egypt demonstrated that Qatar’s gas wealth did not protect it from coercion by larger neighbors. Al Udeid’s presence as leverage against further escalation did. The arrangement has been consistently maintained through diplomatic disruptions that would have caused weaker host nations to reconsider.
The North Field expansion program, which Qatar announced and has been executing, will significantly increase LNG export capacity over the course of this decade. Additional liquefaction trains are under construction. New shipping contracts are being signed. The buyers are primarily in Asia, where long-term gas demand is expected to remain robust as countries manage the transition between coal and renewable energy sources. China has signed expansion agreements with QatarEnergy that commit to substantial additional volumes. These volumes will move through Hormuz.
The Iranian dimension of the North Field story is a long-running source of Qatari strategic anxiety. Iran and Qatar are co-owners of the same reservoir. Iran’s extraction from South Pars is less efficient and less complete than Qatar’s, partly because of investment constraints and partly because Iranian reservoir management has been less sophisticated. There is a geological argument that Iran’s extraction from its side of the field affects reservoir pressure in ways that reduce ultimate recovery from the Qatari side. The two countries have not resolved the management question through bilateral agreement. Iran’s nuclear and sanctions situation has made formal cooperation impossible and informal coordination difficult.
A Hormuz closure scenario puts Qatar in a peculiar position. Its gas wealth is entirely dependent on strait transit. Its largest security partner operates from a base on its territory that would be central to any US military operation in the Gulf. Its relationship with Iran must remain functional enough to prevent hostile acts against Qatari infrastructure while not becoming close enough to jeopardize the American relationship. Managing these constraints simultaneously, under conditions of active military conflict in the strait, is a challenge that Qatari foreign policy has been stress-tested against in planning exercises but not in reality.
The North Field’s gas will keep moving through Hormuz for decades. The geopolitical arrangements that make that movement possible require continuous maintenance.