NASA satellite image of the Strait of Hormuz separating Iran and the Arabian Peninsula
NASA / Wikimedia Commons (Public Domain)
Prices & Markets·Thursday, June 18, 2026

Brent Crude Falls to $79.11 as Iran Peace Deal Targets Hormuz Reopening and IEA Projects 5-Million-BPD Surplus

Brent crude fell to $79.11 per barrel Thursday on the US-Iran deal. Goldman Sachs holds its $90 Q4 forecast. The IEA warns of a 5-million-bpd surplus by 2027.

Brent crude (August 2026 contract) settled at $79.11 per barrel on Thursday, down 0.55% on the session and 10.39% over the prior five trading days, per OilPrice.com. West Texas Intermediate (August 2026 contract) settled at $75.41 per barrel, down 0.79% on the day. Both benchmarks have erased much of the geopolitical premium built during months of Strait of Hormuz disruption.

The US-Iran Agreement and What It Covers

President Donald Trump and Iranian President Masud Pezeshkian signed a 14-point interim agreement at the G7 summit in France this week. The accord provides safe commercial vessel passage through the Strait of Hormuz for 60 days. Demining operations must begin within 30 days of the agreement taking effect. The formal signing ceremony is scheduled for Friday, June 20.

The Strait of Hormuz handles 20% of global oil and gas supplies, per the IEA. At its peak, the conflict blocked more than 14 million barrels per day of Middle East oil output. Middle East flows had already begun recovering before the deal, rising from a May low of 9.6 million barrels per day to 12 million barrels per day in early June.

Physical Supply Recovery Will Lag the Price Move

Amena Bakr, head of Middle East energy and OPEC+ insights at Kpler, estimates six months for mine clearance alone. She added two to three more months for vessel restarts and another three months for production to return to prewar levels. Alan Gelder, senior vice president at Wood Mackenzie, said Iraq specifically "may well take about a year" before reaching prewar output. Capital Economics forecasts 80% of prewar energy flows by September 2026.

Claudio Galimberti, chief economist at Rystad Energy, stated: "Sentiment has clearly improved. But sentiment is not the same as supply." EnergyConnects reported that nearly 600 vessels with 20,000 seafarers remained stranded in Gulf waters as of mid-June, with implementation governance still requiring finalization with Gulf state partners. Shipbrokers reported tentative vessel-hiring inquiries for Gulf crude cargoes, but no material bookings had been confirmed as of Thursday.

Goldman Sachs Holds $90 Q4 Brent Target as Cushing Sits at Multi-Year Low

Goldman Sachs revised its commodities outlook on June 13, lowering its 2027 average Brent forecast by $5 to $80 per barrel. The bank maintained its Q4 2026 Brent target at $90 per barrel. Cushing, Oklahoma crude inventories stood at 20 million barrels, a multi-year low per EnergyConnects, which Goldman cited as the primary near-term price floor. Supply growth from the US, Brazil, Guyana, Venezuela and the UAE drives the bank's more cautious 2027 view.

The IEA's June 2026 oil market report projects global supply reaching 110 million barrels per day in 2027 against consumption of 105.3 million barrels per day. A surplus of more than 5 million barrels per day would represent one of the largest supply overhangs in decades. Goldman and the IEA agree that 2027 presents structural downside for oil, while diverging on how long Q3 and Q4 2026 tightness will persist.

April's $114.60 Peak Forecast Versus Thursday's $79.11 Settlement

When Hormuz shut-ins reached 9.1 million barrels per day in April 2026, the EIA raised its 2026 Brent forecast to $96 per barrel and projected a Q2 peak of $114.60, in a revision documented by Oil Authority at the time. Thursday's settlement of $79.11 sits $35.49 below that April peak projection and $16.89 below the EIA's 2026 annual average estimate. This week's decline originated in geopolitics, not demand weakness or infrastructure failure. Goldman's unchanged Q4 target signals the bank views the current retreat as sentiment-driven, ahead of physical supply restoration.

What the Goldman Gap Means for Alberta Oil Sands Producers

Western Canadian Select implied a Hardisty delivery price of $59.11 per barrel on Thursday. That figure uses the WTI August 2026 settlement of $75.41 less the $16.30 per barrel WCS differential reported by CalRock for May 2026 Hardisty delivery. At Goldman's Q4 2026 Brent target of $90, the current Brent-WTI spread of $3.70 implies WTI at $86.30 per barrel. Applying the same $16.30 WCS differential yields an implied Q4 WCS price of $70 per barrel.

Suncor Energy guided for 840,000 to 870,000 barrels per day of upstream production in 2026, per its December 2025 corporate guidance. At the guidance midpoint of 855,000 barrels per day, the $10.89 per barrel difference between Thursday's implied WCS of $59.11 and Goldman's Q4 implied WCS of $70 translates to $857 million in Q4 revenue sensitivity across 92 days. Suncor's downstream refining network partially offsets upstream price exposure, but crude price benchmarks remain the primary earnings driver for its oil sands operations.

Sources and methodology

Oil Authority synthesis: archive comparison of EIA April 2026 STEO against Thursday settlement prices; derived WCS revenue sensitivity calculation at Goldman Sachs Q4 2026 Brent target versus Thursday settlement. Inputs: OilPrice.com front-month contracts, CalRock WCS differential, Suncor December 2025 production guidance midpoint.

Published by Oil Authority, edited by Adam Humphreys

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