There is no oil worth recovering in Ukraine. Drilled, fracked, and abandoned in 2014 as uneconomical to recover.
“There is no economic oil in Ukraine” (paraphrase)
Maybe at $40/oil.
Ukraine has Europe’s third-largest shale oil and gas reserves at 1.2 trillion cubic meters (tcm) just with gas.
Historically, it was the gas depot of the Soviet Union. Corrupt companies like Biden’s screwed it up. But it’s there for the taking.