The Scale of Kazakhstan's Oil Resources
Kazakhstan holds some of the largest proven oil reserves in the world, ranking among the top producers globally. The country's energy sector is dominated by three giant fields: Tengiz, Kashagan, and Karachaganak. Together, these fields account for the vast majority of Kazakhstan's crude oil output and have attracted tens of billions of dollars in foreign investment from some of the world's largest energy companies.
The Three Giant Fields
Tengiz
Operated by the Tengizchevroil (TCO) joint venture — in which Chevron holds the largest stake alongside ExxonMobil, KazMunayGas, and LukArco — Tengiz is one of the world's deepest and most complex oil fields. A major expansion project (the Future Growth Project and Wellhead Pressure Management Project) has been underway for several years, aimed at significantly increasing production capacity. The project has faced repeated delays and cost overruns, but output increases are expected to materialise in the coming years.
Kashagan
Located in the shallow waters of the northern Caspian Sea, Kashagan was once described as the largest oil discovery in decades when its scale became clear in the early 2000s. Development proved far more technically challenging and expensive than anticipated, and the field came onstream years behind schedule. Kashagan is operated by the North Caspian Operating Company (NCOC), a consortium including Shell, TotalEnergies, ExxonMobil, ENI, KazMunayGas, and others.
Karachaganak
A major oil and gas condensate field in north-west Kazakhstan, Karachaganak is operated by a consortium including Shell, ENI, Chevron, and Lukoil. It is notable for its large gas reserves alongside its liquids production.
Export Infrastructure: The Caspian Pipeline Consortium
The Caspian Pipeline Consortium (CPC) pipeline is the primary route for exporting Kazakhstani oil to international markets, running from the Tengiz field to the Russian Black Sea port of Novorossiysk. Russia's invasion of Ukraine exposed the risks of this dependence on Russian transit territory, with several disruptions occurring in 2022 that were officially attributed to technical issues but raised significant concerns in Astana and among international investors.
In response, Kazakhstan has accelerated work on the Trans-Caspian route — shipping oil across the Caspian Sea by tanker to Azerbaijan, then onward via the Baku-Tbilisi-Ceyhan (BTC) pipeline to Turkey's Mediterranean coast. This "Middle Corridor" offers genuine diversification but requires significant investment in Caspian tanker capacity and port infrastructure.
The Energy Transition Challenge
Kazakhstan has signed international climate commitments and set goals for expanding renewable energy capacity — wind, solar, and hydropower. The country has genuine renewable resource potential, particularly in wind and solar given its geography. However, transitioning an economy so structurally dependent on hydrocarbon revenues is a generational challenge that requires sustained investment, institution-building, and political will.
| Field | Primary Operator | Key Resource | Status |
|---|---|---|---|
| Tengiz | Chevron (TCO) | Crude Oil | Producing; expansion underway |
| Kashagan | NCOC (Shell, TotalEnergies, ENI, ExxonMobil) | Crude Oil | Producing |
| Karachaganak | KPO (Shell, ENI, Chevron, Lukoil) | Oil & Gas Condensate | Producing |