Your posts are very informative but you are the one obsessing about nukes. You mention it ten times more than I do. If an underground nuke would seal off this well I would not hesitate. It would be a small nuke and the radioactivity would be buried. And no, I don’t trust a few internet sites about Russian success or failure using nuclear weapons on runaway oil wells.
Since nuking it does not seem to be a way to end it....then don’t use one.
You are the one who repeatedly suggested them.
My 'obsession' about them is that they would be a dangerous, unsure, and most probably ineffective misapplication of technology, especially when there is a known, effective, and better way.