Oil prices dropped $2 on Tuesday, as talks progressed between Russia and Ukraine to end their weeks-long conflict, though Moscow negotiators clarified that it did not represent a ceasefire.
Further weighing on oil futures, new lockdowns in China to curb the spread of the coronavirus prompted concerns about that fuel demand could take a hit.
Brent crude fell $2.38, or 2.1%, to $110.10 a barrel by 1:41 p.m. ET (1742 GMT). U.S. West Texas Intermediate (WTI) crude was down $1.89, or 1.9%, at $104.02.
Each benchmark fell 7% on Monday and was down as much as 7% again early on Tuesday before bouncing off session lows.
Ukrainian and Russian negotiators met in Turkey for the first face-to-face discussions in nearly three weeks. The top Russian negotiator said the talks were "constructive."
Russia promised to scale down its military operations around Kyiv and northern Ukraine; Ukraine proposed adoption of neutral status but with international guarantees that it would be protected from attack.
Oil bounced off session lows when Moscow's lead negotiator cautioned that Russia's promise to scale down military operations did not represent a ceasefire and a formal agreement with Kyiv had a long way to go.
"Maybe there's reasons to be a bit more optimistic than we were this time yesterday, but I don't think this whole situation with Ukraine is going to go away in the next 15 minutes," Robert Yawger, executive director of energy futures at Mizuho, cautioned.
Sanctions imposed on Russia over its invasion of Ukraine have disrupted oil supplies, driving prices higher.
Prices were also pressured on Tuesday by fears over Chinese demand after new lockdowns in Shanghai to curb rising coronavirus cases.
Shanghai accounts for about 4% of China's oil consumption, ANZ Research analysts said.
Lockdowns have dampened consumption of transportation fuels in China to a point where some independent refiners are trying to resell crude purchased for delivery over the next two months, traders and analysts said.
"China's zero-COVID policy is bringing some relief to the oil market, albeit involuntarily, which is very tight due to the supply outages from Russia," said Commerzbank analyst Carsten Fritsch.
Weakness in global oil demand is expected to persist through April and May, said Rystad Energy's senior vice president of analysis, Claudio Galimberti, citing the Russia-Ukraine tensions, high oil prices and China's COVID-19 situation.
Early in the session, oil prices rose almost $2 on continued disruption of Kazakhstan's supplies and as major producers showed no sign of rushing to boost output significantly.
Kazakhstan is set to lose at least a fifth of its oil production for a month after storm damage to mooring points used to export crude from the Caspian Pipeline Consortium (CPC), the energy ministry said.
The OPEC+ producer group is expected to stick to its plan for a modest output rise in May despite high prices and calls from the United States and other consumers for more supply.
The energy ministers of Saudi Arabia and the United Arab Emirates, key members, said OPEC+ should not engage in politics as pressure mounted on them to take action against Russia over its invasion of Ukraine.
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