Каморка

Though it sounds more like fiction and somewhat outlandish, the fact is that Soviet Russia had used controlled nuclear explosions to contain oil spills, on at least five different occasions.
The science is to drill a hole near the leak, set off the explosion and then seal off the leak-used in the soviet for an oil spill in the desert. If it is rocky surface the explosion would shift the rock which then squeezes the funnel of the well. The first underground nuclear explosion was done in Urt-Bulak in 1966 to control burning gas wells. The success ratio is quite high with only one of them failing to prevent a spill in Kharkov region in 1972.