22OCT

Aramco restarts Petroline but not fully

4 min read

17:24UTC

Saudi Aramco restarted the East-West Crude Oil Pipeline on 22 September, twelve days after drones hit its pump stations. Flows are rebuilding towards about 4 million barrels a day, against the 5.5 million the line carried before the attack and a design capacity of 7 million.

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Key takeaway

Petroline is flowing again at about four million barrels a day, well under its pre-attack rate.

Saudi Aramco restarted the East-West Crude Oil Pipeline on Tuesday 22 September 2026, twelve days after drones hit its pump stations and shut it⁠¹. Known in the trade as Petroline, it is the only large line that moves Saudi crude to the Red Sea without passing through the Strait of Hormuz.

Aramco restarted the line; it has not restored the throughput. Flows are rebuilding towards about 4 million barrels a day, against the 5.5 million the line carried before the attack and the 7 million it was built to carry⁠². On 12 April we reported the line restored to its full 7 million barrels a day, bypassing Hormuz entirely; that picture no longer holds, and the shortfall between the restart figure and the pre-attack figure runs to roughly a third of the route.

The gap matters because a bypass is worth whatever it can actually move on the day the chokepoint closes. While the line was down, Saudi Arabia covered the loss by pushing crude through the strait the pipeline exists to avoid, and loadings at Ras Tanura ran at 6.5 million barrels a day against 1.5 million in early September⁠³. A damaged alternative therefore does not merely reduce Riyadh's options; it pushes Saudi volume back into the water everyone else is trying to get out of, and it raises the war-risk bill on every one of those cargoes.

That is the mechanism behind a political position as well as a commercial one. Twelve days of outage were enough to send The Kingdom's own barrels back through Hormuz, which is a short demonstration of how thin the margin is between having a bypass and depending on the chokepoint. Rebuilding the last 1.5 million barrels a day of throughput is the number to watch, not the restart date.

Deep Analysis

In plain English

Almost all Saudi oil normally leaves through terminals on the Gulf coast, which means every cargo has to pass through the strait of Hormuz. Saudi Arabia built one big pipeline, called Petroline or the East-West line, to carry crude across the country to Yanbu on the Red Sea instead, so it has a way out that avoids the strait altogether. On 10 September 2026 drones hit the pumping stations that push oil along that line, in the Riyadh and Medina regions, and the pipeline stopped. Saudi Aramco restarted it twelve days later, on 22 September, using a temporary bypass while permanent repairs continue. Flows are building back towards about 4 million barrels a day, against 5.5 million before the attack and a maximum design capacity of 7 million. While the line was down, Saudi Arabia simply shipped more oil out of the Gulf instead, with loadings at Ras Tanura jumping to 6.5 million barrels a day. That is the measure of how much the pipeline matters: without it, the oil goes through the strait anyway.

Deep Analysis

Root Causes

Petroline runs from the Eastern Province to Yanbu on the Red Sea and is the only large line that moves Saudi crude without passing the strait of Hormuz, so a nameplate of 7 million barrels a day against total Saudi exports makes it a partial escape at best. There is no second line of comparable size to switch to, which is why losing pump stations in the Riyadh and Medina regions on 10 September moved loadings straight back into the Gulf.

Yanbu sits on the Red Sea, which has its own attack history, and underwriters now quote southern Saudi ports at 7 per cent of hull value. A ship choosing between a 3 per cent Yanbu premium and a 6 per cent Hormuz one is choosing between two priced war zones, not between danger and safety.

Escalation

Down on supply risk, unchanged on military risk. The line is back and the Red Sea route is open again, which removes the forced concentration of Saudi exports into Hormuz that the outage created. The trigger that would reverse it is a second strike on the pump stations, which the first attack showed to be reachable, or an attack at Yanbu itself, where war-risk pricing suggests underwriters already expect one.

What could happen next?

Consequence
The 1.5 million barrel a day gap between current and pre-attack throughput has to cross the strait, adding demand to a freight market already at record rates.
Immediate · Assessed
Risk
Permanent repairs are four to six weeks out on Kpler's estimate, so the line is running on a temporary bypass that has not been tested at full load.
Short term · Reported
Meaning
Pump stations deep inside Saudi territory were reached by drones, which makes the bypass a target rather than a refuge.
Medium term · Assessed
Precedent
A sovereign rating cited an asset that had been out of service for two days when the assessment published, which is a reason to check infrastructure status against the date of any conflict-zone credit opinion.
Long term · Assessed

Source Landscape

This story draws on mixed-leaning sources from United States

United States

LeftRight

Primary parallel: The attacks on Abqaiq and Khurais on 14 September 2019 removed about 5.7 million barrels a day of Saudi processing in a single morning, and Aramco restored output within weeks while inventories covered the gap. The company's repair record on single-point failures is the strongest argument for reading this twelve-day outage as a mechanical problem rather than a strategic one.

Counter-parallel: The Iraqi pipeline through Saudi Arabia and the Kirkuk to Ceyhan line both shut during the 1990 and 1991 Gulf conflict, and the constraint that kept them shut afterwards was political rather than mechanical, in one case for decades. A bypass can be restored physically and still fail to carry barrels if the war it was built for outlasts the repair.

Every barrel the line cannot carry has to run the strait or stay in the ground, so the gap between the 4 million barrels a day it is rebuilding towards and the 5.5 million it carried before the attack is a direct addition to Hormuz transit demand. That demand lands in a freight market already bidding at record levels, which means the pipeline's shortfall is paid for twice: once in war-risk premium and once in charter hire.

S&P Global Ratings named the East-West Pipeline as a source of resilience while that line was out of service, and the Saudi Ministry of Finance published the affirmation itself. Sovereign assessments on conflict-exposed producers are being written faster than the infrastructure facts beneath them change, and the reader cannot tell from the rating which is current.

Consensus view: S&P Global Ratings affirmed Saudi Arabia at A+ with a stable outlook on 12 September 2026, and the Saudi Ministry of Finance published the decision citing the ability to redirect crude exports to the Red Sea through the East-West Pipeline among the strengths behind that outlook, alongside a projected 0.9 per cent contraction in 2026 and a rebound to 8.2 per cent in 2027. The restart ten days later restores the asset that assessment rested on.

Counter-view: The Kingdom's own behaviour during the outage points the other way. Kpler recorded crude loadings at Ras Tanura rising to 6.5 million barrels a day from 1.5 million in early September, so Saudi Arabia answered the loss of its bypass by sending more oil through the chokepoint the bypass exists to avoid.

Underwriters drew the same conclusion: war-risk cover for a call at Yanbu tripled to about 3 per cent of hull value from under 1 per cent in early July, which prices away most of the saving over a Hormuz transit.

Key tension: Whether a line running at 4 million barrels a day on a temporary bypass, with permanent repairs four to six weeks out, functions as a route around the strait or only as a partial one.

Sources:OilPrice.com·Seoul Economic Daily

Mentions:Saudi Aramco →Petroline →Saudi Arabia →Yanbu →Ras Tanura →Strait of Hormuz →Kpler →Kirkuk →Red Sea →Ceyhan →S&P Global Ratings →Riyadh →Eastern Province →

First Reported In

Update #180 · Washington left Iraq as it answered Tehran

OilPrice.com· 1 Oct 2026

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Causes and effects

Caused by

Drones hit the pipeline built to dodge Hormuz

The 10 September drone strike on the pump stations shut the line that Aramco restarted twelve days later.

Occurred 10 Sept 2026

Read story →

This Event

Aramco restarts Petroline but not fully

Saudi Arabia's only large route to the Red Sea is running again at well under the throughput it had before the strike, so the bypass is back without being whole.

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Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.