My big concern is the casing below the BOP and what shape it is in when they start pumping into it. They are really going to have to pump at high pressure and high volume to overcome the top leakage and force mud (lost circulation materials etc)back down the well.
Just a thought how to stop the flow of oil coming out of the ground.
Employ a device resembling a canon, in form of a long heavy metal tube closed on one end with the purpose of launching a projectile. It does not have to have any rifling but the caliber or diameter of the projectile would have to be about the same as the bore hole or slightly larger. The projectile could be slightly tapered in front, and be a none explosive metal cylinder with a heavy powder charge behind it. Then make an attempt to position it over the original bore hole which may have to be some what trimmed and cleaned up to facilitate and allow the entry of this solid metal cylinder or projectile in to the original bore hole.
Then put a heavy powder charge behind this none explosive projectile and shoot it in to the bore hole to close it off. Since the projectile would be recessed in this metal barrel or firing tube, arrangements could be made using compressed air to blow out any water first before firing the projectile in to the bore hole, similar to using a torpedo, except in this case it would be none explosive and only used to plug the hole.
The whole contraption in form of a long heavy metal tube could be suspended from cables above and guided over the bore hole and used repeatedly if the initial try would be unsuccessful. Also these metal plugs or projectiles could be prepared in such a manner that they could have a center plug made from lead etc. what could be easily bored out and restore the flow of oil in a safe manner once its purpose has been accomplished.
Well this is just a thought or suggestion, shoot something in to the bore hole when everything else failed to do the trick. I am quite certain if a heavy metal dome was fabricated previously to catch the escaping flow of oil in a fairly short amount of time, the contraption as suggested by me could be rigged up just as quickly.