I bet Putin got it at bargan basement prices. Still a risk—if Modero falls—Russia could lose their investments. Its only a question of time before Venezuela falls into Revolt and revolution. Still, Cuba is still Communist—once the iron collar of Communism is locked on —its hard to remove.
In April 2017, a controversial Venezuelan Supreme Court ruling granted Maduro executive powers over PDVSA, which allow him act autonomously in selling shares or make international agreements of the oil company.[58] In October 2017, Venezuela had its lowest oil output in 28 years, with only 1.863 million bpd being pumped that month.[59] By late-2017, the PDVSA struggled to repay $725 million of debt, part of a total $5 billion owed.[60][61].
https://en.wikipedia.org/wiki/History_of_the_Venezuelan_oil_industry