Published by Global Banking & Finance Review®
Posted on December 18, 2025
3 min readLast updated: January 20, 2026
Add as preferred source on GoogleOil prices increased slightly as markets evaluated risks from a Venezuelan oil blockade and potential U.S. sanctions on Russia, affecting global supply.
By Arathy Somasekhar
HOUSTON, Dec 18 (Reuters) - Oil prices settled marginally higher on Thursday as investors assessed the likelihood of further U.S. sanctions against Russia and the supply risks posed by a blockade of Venezuelan oil tankers.
Brent crude closed 14 cents, or 0.2%, higher at $59.82 per barrel, while U.S. West Texas Intermediate crude was up 21 cents, or 0.4%, at $56.15 per barrel.
"Crude futures are trying to find support from the Venezuelan oil export blockade, which if it continues will likely cause production in the area to be shut in with no destinations to ship out to," said Dennis Kissler, senior vice president of trading at BOK Financial.
U.S. President Donald Trump on Thursday said he believes talks toward ending the war in Ukraine are "getting close to something" ahead of a U.S. meeting with Russian officials this weekend.
The U.S. is preparing another round of sanctions on Russia's energy sector in the event Moscow does not agree to a peace deal with Ukraine, Bloomberg reported on Wednesday, citing people familiar with the matter. A White House official told Reuters that Trump had not made any decisions on Russian sanctions.
"If no Russia/Ukraine peace deal is reached, the attacks on Russia could escalate, quickly tightening supplies, and if you add in the blockade on Venezuelan oil, crude prices may very well be a bit underpriced here," Kissler said.
RISKS TO SUPPLY MOUNT
Further measures targeting Russian oil could pose a greater supply risk to the market than Trump's announcement on Tuesday that the U.S. would blockade tankers under sanctions entering and leaving Venezuela, ING analysts said in a note.
Britain imposed sanctions on 24 individuals and entities as part of its Russia sanctions regime, including on Russian oil companies Tatneft and Russneft, a government notice showed on Thursday.
The Venezuela blockade could affect 600,000 barrels per day of Venezuelan oil exports, mostly to China, but 160,000 bpd of exports to the U.S. would likely continue, ING said.
Chevron vessels were continuing to depart for the U.S. under a previous authorization from the U.S. government.
Venezuela on Thursday authorized two unsanctioned very large crude carriers to set sail for China, according to two sources familiar with Venezuela's oil export operations.
It was not clear how a U.S. blockade would be enforced. The U.S. Coast Guard last week took the unprecedented step of seizing a Venezuelan oil tanker, and sources said the U.S. was preparing for more such interdictions.
Venezuelan crude makes up around 1% of global supplies.
Analysts at Bank of America anticipate the lower price of oil will reduce the amount of supply. If WTI prices average $57 a barrel in 2026, in line with their projection, U.S. shale oil production could contract by 70,000 bpd.
(Reporting by Enes Tunagur, Stephanie Kelly and Colleen Howe; Editing by Barbara Lewis, Nia Williams and Paul Simao)
Brent crude is a major trading classification of crude oil originating from the North Sea. It serves as a benchmark for pricing oil globally, influencing the pricing of other types of crude oil.
A blockade is an act of sealing off a place to prevent goods or people from entering or leaving. In the context of oil, it can disrupt supply chains and affect prices.
West Texas Intermediate (WTI) is a grade of crude oil used as a benchmark in oil pricing. It is sourced from the U.S. and is known for its light and sweet characteristics.
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