CPC pipeline Kazakhstan: 80% of exports through one Russian port

The CPC pipeline in Kazakhstan carries more than 80% of the country's oil exports across 1,511 kilometres of Russian and Kazakh territory to a single marine terminal near Novorossiysk. From there the crude loads onto tankers, crosses the Black Sea and exits through the Turkish Straits. One pipeline, one terminal, one strait: a landlocked producer's entire export economy runs through a chain with no redundancy at any link.

What makes the Caspian Pipeline Consortium unusual among chokepoints is that it is not primarily a Russian asset despite sitting on Russian soil. More than 75% of the crude it shipped in 2025 belonged to foreign shareholders, with Chevron holding 15% of the consortium and ExxonMobil's Mobil Caspian Pipeline Company 7.5%. Russia holds 31% and Kazakhstan 20.75%.

The consequence became measurable on July 22, 2026. After drone strikes forced the terminal to suspend loadings, Kazakh output fell about 21% in a day, from a July average of 2.07 mb/d to 1.63 mb/d. At Tengiz, more than 1,500 kilometres from the sea, production dropped 56%, from roughly 925 kb/d to 406 kb/d, because storage tanks filled and there was nowhere to put the oil.

Key numbers

What flows through the CPC pipeline

CPC Blend, a light sour crude, is the product and the benchmark. It is dominated by Tengiz output, with contributions from Kashagan and Karachaganak, and it loads at the Novorossiysk-2 marine terminal near Yuzhnaya Ozereyevka through three single point mooring buoys, mostly onto Aframax tankers bound for European and Asian refineries.

The producer list explains the pipeline's diplomatic weight. Chevron operates Tengiz through Tengizchevroil, ExxonMobil holds stakes in both Tengiz and Kashagan, and Eni and Shell participate in Kashagan and Karachaganak. When loadings stop, the barrels stranded belong substantially to American and European majors, not to Russian state companies.

The terminal shares its bay with Russia's own oil export infrastructure. That proximity is the origin of most of the operational risk, since attacks aimed at Russian export capacity land in the same waters as Kazakh cargo. The Russian side of that geography is covered in Russian seaborne crude exports.

Who depends on the CPC pipeline

Kazakhstan's dependence is close to absolute, and it is fiscal rather than merely logistical. Oil is the country's principal export earner, and more than 80% of it leaves through this one route. The January 2026 episode showed the transmission speed: when CPC exports fell to roughly 440 kb/d, the lowest in seven years, national production fell 35% to about 1.34 mb/d.

Chevron and ExxonMobil depend on it for the monetisation of two of the largest oil developments outside OPEC. Their exposure is unusual in that it is neither political risk in the country of production nor market risk in the country of sale, but transit risk in a third country at war.

European and Asian refiners configured for light sour crude depend on CPC Blend as a distinct grade. Substitution is possible but not free, since replacement barrels of similar quality generally come from the Middle East and arrive with different freight economics.

Russia's dependence is different in kind. It earns transit revenue and holds the largest single ownership block, which gives Moscow influence over a neighbour's export lifeline. That leverage is the reason Kazakhstan's diversification efforts are strategic rather than commercial.

Alternatives and bypass routes

Kazakhstan has alternatives. Measured against CPC, they are rounding errors.

The Aktau route sends crude across the Caspian by tanker to Baku, where it enters the Baku-Tbilisi-Ceyhan pipeline to the Mediterranean. Volumes reached 1.3 million tonnes in 2025 and are expected to rise to about 1.6 million tonnes in 2026, against CPC's 70.5 million tonnes. Growth is constrained by tanker availability and port handling capacity on the Caspian rather than by pipeline space at the far end.

The Atyrau-Samara line feeds into the Russian pipeline system, which substitutes one form of Russian transit dependence for another. The Atasu-Alashankou line to China carried about 1.1 million tonnes in 2025 and runs east, away from the customers who buy CPC Blend.

The arithmetic of the December 2025 test is the clearest available measure of substitutability. After the November 2025 strike damaged mooring SPM-2, Kazakhstan rerouted about 300,000 tonnes through all alternative channels combined. That is roughly 0.4% of CPC's annual throughput. In January 2026, alternative routes absorbed about 6% of the volume lost at CPC over the same period.

There is no pipeline under construction that changes this. Kazakhstan's exposure is structural for the remainder of the decade, which is why Astana's response to attacks has been diplomatic protest rather than commercial rerouting.

Historical incidents

Assets and companies exposed

Exposure runs through the shareholder register. Chevron and ExxonMobil carry the largest listed exposure, both as consortium owners and as producers at Tengiz and Kashagan; Eni and Shell hold field-level exposure through Kashagan and Karachaganak. KazMunayGas and the Kazakh state budget carry the sovereign side.

Tanker owners loading at the terminal have become direct targets rather than incidental parties, and the vessels struck in 2026 were Greek-controlled and Western-chartered tonnage carrying international crews. Marine war risk underwriters price that exposure alongside the wider basin, covered in Black Sea shipping.

Refiners configured for CPC Blend carry substitution cost rather than supply risk, since the grade is replaceable at a price. Transneft, as the largest Russian shareholder, carries transit revenue exposure.

This page describes exposure. It does not assess securities or recommend positions.

What to watch

CPC loading status, announced by the consortium and the Kazakh Energy Ministry after each incident, is the binary indicator that matters most. Kazakh production data from the Energy Ministry shows how quickly a terminal interruption reaches the wellhead. Aktau shipment volumes and Caspian tanker availability measure whether diversification is progressing beyond announcements. Statements from Astana toward Kyiv and Washington indicate whether diplomatic pressure is changing targeting behaviour. Finally, CPC Blend differentials against Brent price the reliability of the route in the physical market.

FAQ

What is the CPC pipeline? The Caspian Pipeline Consortium operates a 1,511-kilometre crude oil pipeline from western Kazakhstan through Russia to a marine terminal near Novorossiysk on the Black Sea. It carries CPC Blend from the Tengiz, Kashagan and Karachaganak fields and handles more than 80% of Kazakhstan's oil exports.

How much oil does the CPC pipeline carry? About 70.5 million tonnes in 2025, roughly 1.4 million barrels per day, which is in the order of 1.3% of world oil supply. More than three quarters of that volume belonged to foreign shareholders rather than to Russian or Kazakh state companies.

Who owns the Caspian Pipeline Consortium? Russia holds 31% and Kazakhstan 20.75%, with Chevron at 15% and ExxonMobil's Mobil Caspian Pipeline Company at 7.5%, alongside smaller stakes held by other producers. The consortium is governed through two entities, CPC-Kazakhstan and CPC-Russia.

Why does an attack at Novorossiysk stop production at Tengiz? Because there is no storage buffer large enough to absorb a halt. When the terminal stops loading, tanks along the system fill within days, and producers must cut output to avoid technical damage. On July 22, 2026, Tengiz production fell 56% in a single day for exactly this reason, despite sitting more than 1,500 kilometres from the terminal.

Can Kazakhstan export oil without the CPC pipeline? Only in small volumes. The Aktau to Baku-Tbilisi-Ceyhan route moved 1.3 million tonnes in 2025 against CPC's 70.5 million, and the line to China runs east, away from CPC Blend's buyers. When CPC was disrupted in late 2025, all alternative routes combined absorbed about 0.4% of annual throughput.

Is CPC a Russian pipeline? It sits largely on Russian territory and Russia is its largest shareholder at 31%, but the crude it carries is overwhelmingly Kazakh and the majority of the volume belongs to foreign companies including Chevron and ExxonMobil. This is why attacks on the terminal draw protests from Astana and warnings from Washington rather than from Moscow alone.