Saudi Aramco Reroutes Flows as Hormuz Risk Keeps Oil on Edge

Saudi Aramco’s growing use of offshore transfers outside the Strait of Hormuz is cushioning Asian refiners from immediate disruptions but adds structural cost and risk to the regional crude trade, keeping a geopolitical premium embedded in oil prices. Oil benchmarks have eased on short-term optimism over Iran–Oman talks on managing Hormuz, yet physical flows remain fragile and logistics more complex. Aramco’s alternative loading strategies off Fujairah and Sohar underline that Gulf producers and Asian buyers are not counting on a swift normalisation of transit through the chokepoint. Rising offshore volumes towards China and continued ‘dark’ tanker movements through Hormuz highlight a market still heavily exposed to security events, even as futures consolidate near recent highs.

Prices

Front-month Brent is trading just under EUR 85/bbl and WTI around EUR 76–77/bbl after a 2% pullback this week, as traders weigh Hormuz negotiations against still-reduced flows through the strait and recent risk-off sentiment in broader markets.

Prices had rallied strongly in prior weeks on fears of a prolonged Gulf export shock, with the current consolidation reflecting some profit-taking and expectations that partial navigation corridors could emerge. However, physical route disruption and higher freight and insurance premia keep a meaningful geopolitical floor under the complex.

Supply & Demand

Saudi Aramco is actively reshaping export logistics to preserve supply to Asia. It has launched a second consecutive weekly sales process offering additional Arab Medium and Arab Heavy cargoes for September loading to Asian buyers, using ship-to-ship (STS) transfers off Fujairah (UAE) and Sohar (Oman), both located outside the Strait of Hormuz.

At least 4 million barrels have already been sold to Chinese buyers in August under these arrangements, loaded onto two VLCCs via STS operations off Sohar and now en route to Ningbo and Zhanjiang for Sinopec, with arrivals expected in mid-September. A further 4 million barrels of heavier grades were sold to PetroChina and Sinochem after Aramco resumed loadings from Ras Tanura earlier in August, underscoring its focus on maintaining and diversifying flows to core Chinese customers.

Despite these efforts, shipping data indicate that part of Saudi crude is still crossing Hormuz on tankers with AIS tracking switched off, suggesting reliance on ‘dark’ traffic to navigate the highest-risk waters. Meanwhile, broader Gulf flows via Hormuz remain well below pre-war norms, with only a handful of commodity vessels transiting on recent days compared with typical double-digit daily counts, confirming that the chokepoint is far from fully restored.

Fundamentals & Logistics

Offshore transfers outside Hormuz materially change the cost structure of Asian crude sourcing. Additional handling steps, STS operations, and re-routing around the strait are likely increasing freight, insurance, and operational expenses. These incremental costs tighten effective delivered supply for Asian refiners and may support Middle Eastern medium and heavy sour differentials versus benchmarks, even if flat prices consolidate.

From a balances perspective, the alternative loading points at Fujairah and Sohar act as safety valves, allowing Aramco to stage cargoes in lower-risk waters and smooth export programmes despite intermittent disruptions through Hormuz. However, capacity at these offshore transfer zones is finite, and scaling up STS activity introduces operational risks such as weather-related delays, congestion, and potential safety incidents, which could quickly feed back into spot premiums if any mishap occurs.

In the broader market, sentiment has been pressured by Iran–Oman talks aimed at managing traffic in the Strait of Hormuz and a recent build in US crude inventories, which together triggered a roughly 2% price decline earlier this week. Yet analysts stress that any political framework for navigation is fragile, and flows through the chokepoint remain significantly below historic levels, leaving the supply outlook skewed to the upside on price.

Regional and Weather Factors

Weather conditions in the Gulf of Oman and Arabian Sea are currently seasonally typical, with no major storms threatening key offshore transfer zones at Fujairah and Sohar in the immediate term. That reduces near-term operational risk to STS activity and supports Aramco’s rerouting strategy.

However, elevated regional security tensions continue to overshadow benign weather. Isolated incidents—such as recent attacks on vessels off Oman and evolving Iranian statements on military transit rights—underscore that geopolitical events, rather than meteorology, are the primary disruption drivers for Gulf crude logistics at present.

1–3 Month Outlook

• Flows: Aramco is likely to keep offering incremental spot and optional cargoes via Fujairah/Sohar STS to key Asian buyers through September, maintaining stable exports to China but with structurally higher logistics costs.
• Risk premium: As long as Hormuz traffic remains constrained and partially ‘dark’, a security premium of several EUR/bbl is expected to persist in Brent and Middle East sour differentials, even if talks produce temporary de-escalation signals.
• Inventories: Recent US crude builds and choppy macro data may cap rallies, but any renewed disruption incident in or near Hormuz would likely trigger a swift upside spike given thin spare logistic capacity around the chokepoint.

Trading Outlook

• Producers & hedgers: Use current price consolidation below recent highs to layer in hedges for Q4 exports; consider structures that preserve some upside in case of a fresh Hormuz-related shock.
• Refiners in Asia: Maintain diversified sourcing and optionality between term and spot Saudi barrels, prioritising access to Fujairah/Sohar-loaded cargoes; budget for elevated freight and insurance into year-end.
• Speculators: Short-term, dips driven by optimistic Hormuz headlines may offer opportunities to re-establish length, given persistent physical and security constraints on Gulf flows.

3-Day Price Indication (Directional, EUR)