Every day a Russian refinery goes KABOOM is a great day for me. Some refineries do the crude distillation in four-five stages of distillation (cracking) towers. Ukraine tries hit the one doing the first stage of distillation. This means the other stages have no product to further distill.
Russian Refinery Status Tracker
https://docs.google.com/spreadsheets/d/1NfYoI5Qv2XO0I9wDOoJTqe8Y6PRIgESAm3MLQKFUFWA/edit?gid=0#gid=0
Looks like only 11 of 38 listed refineries have NOT been hit since Jan 2024