Well... Based on this 866000 / 2.2 = 393636.3636 KG ... So a plug weighing about 1 metric ton should be more than enough... The question is whether or not the remaining pipe and BOP can manage the weight!??? I don't know because Iâm not sure how much weight it would be able to manage... It might topple over. Nevertheless, if everything else fails as a last ditch solution it might work if the BOP and the entire assembly was removedâ¦ Then all you would have to do is plug the hole in the ground. As for the well "blowing out" again underneath the floor...!? Well... That is an unknown... I don't think that it would. Wouldn't burying the region under cement help to seal that region of the sea floor?