Kazakhstan’s ability to diversify its seaborne crude oil export routes away from Russian territory is critical to the country’s economy, the developer of an alternative port told CNBC.

“I believe it’s less political, more existential question, and we hope that also international community is going to support that initiative to have alternative routes in order to minimize the effects of any supply shortages,” Nurzhan Marabayev, CEO of Kazakh infrastructure investor Semurg Invest, told CNBC’s Dan Murphy and Hadley Gamble.

His company has been working to develop the Kuryk port on the eastern coast of the Caspian Sea — a project that includes a bulk cargo terminal, designed for the transshipment of oil, bulk oil cargo and liquefied petroleum gas. 

Once complete, the port could provide an alternative to Kazakhstan’s main seaborne crude oil export route, which currently transports volumes across Russian territory via the 1,511-kilometer (939-mile) Caspian Pipeline Corporation’s pipeline, for later shipment from the CPC terminal near Russian port Novorossiysk.

Since Moscow’s full-scale invasion of Ukraine last year, concerns have mounted that Kazakhstan’s reliance on cooperation with Russia — with whom Kazakhstan shares a 7,644-kilometer (4,750 miles) border and a history of close political alignment — could endanger its oil supplies. Exports from the CPC terminal were intermittently disrupted in 2022, with Russia citing technical and regulatory issues. This included a delay in the port’s restart after storm damage, while Russian technical watchdog Rostekhnadzor carried out an unscheduled inspection, and a brief and unenforced Russian court ruling for CPC to halt exports for 30 days.

“Approximately 95% of oil is going through Russian territory, and we have seen some disturbance last year, and actually … it’s quite a threat to the Kazakhstan economy, because we are depending on the oil revenues,” Marabayev told CNBC on Wednesday.

Oil major ExxonMobil — which holds a 16.8% interest in the Kasahagan field and a 25% stake in the Tengizchevroil consortium that operates the Tengiz and Korolev fields — signaled similar concerns in a Feb. 22 securities filing.

“In the event that Russia takes countermeasures in response to existing sanctions related to its military actions in Ukraine, it is possible that the transportation of Kazakhstan oil through the CPC pipeline could be disrupted, curtailed, temporarily suspended, or otherwise restricted,” the company said, warning of a “loss in cash flows of uncertain duration” under such circumstances. ExxonMobil’s after-tax earnings linked to its Kazakh interests were roughly $2.5 billion in 2022.

Kazakhstan is the second largest producer of the non-OPEC contingent of the OPEC+ coalition and has typically aligned itself with Russia in the group’s petropolitics. Kazakh output slipped to 1.66 million barrels per day in January, according to the February issue of the International Energy Agency’s Oil Market Report.

The country has been studying potential alternative transport routes beyond Moscow’s borders, including the possibility of sending oil shipments via Azerbaijan’s Baku-Tbilisi-Ceyhan pipeline and through the incomplete Kuryk port project.

“Major infrastructure has been done, but still we need more support and attention to the port in order to fast-track the development of the private terminals,” Marabayev said. Development began in 2010, with operations starting six years ago.

Russia and Kazakhstan have historically observed a tight alliance, with Kazakh President Kassym-Jomart Tokayev last year calling on the Moscow-led Collective Security Treaty Organization to send paratroopers into Kazakh territory after nationwide protests erupted over fuel price increases.  

But Russia’s war in Ukraine has stranded Kazakhstan in a precarious balancing act between Western powers and the Moscow administration of Vladimir Putin. Tokayev deepened engagement with Washington during the Tuesday visit of U.S. Secretary of State Antony Blinken, who repeatedly stressed that the U.S. backed Kazakhstan’s “territorial integrity.”

“Ever since being the first nation to recognize Kazakhstan in December of 1991, the United States has been firmly committed to the sovereignty, territorial integrity, and independence of Kazakhstan – and countries across the region,” Blinken said.

“In our discussions today, I reaffirmed the United States’ unwavering support for Kazakhstan, like all nations, to freely determine its future, especially as we mark one year since Russia launched its full-scale invasion of Ukraine in a failed attempt to deny its people that very freedom.”

The withdrawal has pressured its production levels, which the IEA pegged down to 9.77 million barrels per day in January. Moscow announced it would reduce crude oil output by 500,000 barrels per day in March. 

Russia has also been pushed farther into the Asia markets, now primarily relying on Chinese and Indian purchases:

“I think Russia, effectively, is an Asian nation by now. I think India and China will, for a long period, be the main buyers of Russia. It’s going to become the new norm,” Viktor Katona, lead crude analyst at Kpler, told CNBC’s “Squawk Box Europe.”

“I think that’s going to be the end result Russia out of Europe, Russia perennially into Asia, there’s going to be new links into those countries, and that’s pretty much it.”