Two cargoes of May-loading Brazilian heavy sweet Ostra crude appear to have been diverted to the US Gulf coast for refining, instead of heading to their typical destination of Singapore for use in very-low sulphur fuel oil (VLSFO) blending, trading sources told Argus. Ostra crude has a gravity around 20-24°API and sulphur content close to 0.35pc, and is shipped from the 100,000 b/d Espirito Santo floating production, storage and offloading (FPSO) vessel, connected to Brazil's offshore Ostra field.
A cargo of Ostra crude loaded onto the Loire vessel from the Espirito Santo at the end of May and is currently declaring for discharge at the US Gulf coast, according to data from global trade analytics platform Kpler. The cargo is likely intended for refinery feedstock, traders said.
And another cargo of Ostra crude loaded onto the Sonangol Kulumbimbi in early May, with the cargo expected to discharge in the Gulf coast this week, Kpler data show.
These trade flows are unusual as Ostra crude — typically lifted by Shell at volumes of around 150,000t/month — is almost always shipped to the Singapore strait for VLSFO blending. The last recorded delivery to the US Gulf coast was in June 2023.
Strong products crack spreads, particularly for gasoline and diesel, likely supported the decision to reroute the cargoes for refining in the US Gulf. Forward month VLSFO east-west spreads are hovering in the low $30s/t at present, making it unattractive to send cargoes east, a Singapore-based fuel oil trader said. A recent tightening in heavy crude supply in the US — driven by the discontinuation of Venezuelan crude exports and concerns about potential wildfire-related crude supply disruptions in Canada — may have also supported the rare exports.
The diversion of around 150,000t of Ostra crude will tighten Singapore VLSFO balances for July, at a time when the arrival of replenishment supplies from Europe was due to offer some reprieve in the market.
The Argus-assessed June-July and July-August VLSFO time spreads rose on the session, assessed at $7.50/t and $5.25/t, respectively, on 4 June, up from $6.75/t and $4.50/t on 3 June. VLSFO supplies are expected to remain tight throughout June, with the majority of European supplies — or around 4-5 Suezmax cargoes — due to arrive from early to mid-July onwards.