So at this late hour, a few more thoughts on the topic and the results of my research.
After I was still clearly in favor of $SLB (+1,7 %) I now see the profiteer with the greatest leverage as actually being $COP (-0,9 %) ! They were expropriated by Maduro's predecessor Chavez in 2007. Unlike $CVX (+2,03 %) they took action against it at the time and were awarded $8.37 billion. The value is now estimated at $10 billion due to interest etc. As Venezuela will certainly not be able to pay the money, it can be assumed that it will be exchanged for real assets such as exclusive production rights, preferential export quotas or joint ventures. This would give $COP access to reserves and cash flows without first having to make large investments like its competitors.
I think if I wanted to play the Venezuela card, I would therefore $COP (-0,9 %) as a top pick.

