and yeah, where I live is pretty much fucked. that oil is going to kill our marshes if it gets in there and that'll be pretty much the end of it down here.
Even if anyone here did, unless you're a specialist in sea drilling, and privy to all of the details the people working on it are, it's beyond pointless to even try to offer suggestions.
explosives dont work underwater the same way they work in air. and dropping loose wet sand onto a high-pressure wellhead pipe wont do fuckall. it takes thousands of feet of various geological layers to keep oil where it is.
Initially, yes, they are capping it near the surface. The relief well is the fail-safe, and it may be the completely permanent solution, just to make sure that even if the well head busts again, it won't be a problem.
honestly? whats wrong with creating a slab of crete and base material on the surface or just below and chasing that fucker down with an absolute fuckton of water hardening crete? maybe a giant convex steel mesh net for the base?
I still fail to see how "blowing it up" solves anything. Oil is leaking from the hole, it's not on fire. You blow a well to put out a fire, not to cap it. I'm sure it's possible to do it on the surface, but there is no way you're going to blow up anything underwater with enough force to collapse a high pressure oil well or send enough debris on top of it to cover it up.