OK, we all must show we are damn good old sea dogs ; there were many ways to plug the hole in the shell platings. The one of the last way was ;
umbrella like structure was fabricated, we push the thing into the hole and open it. The pressure of seawater when applied to the fabric that closed the hole and leaking reduced somewhat and we welded the steel plates between frames and the bottom plate in place (already cut along the the specs of the two frames)…etc and poured the quick cement and sand mix into it…
Now, the hole on the earth can be plugged up by similiar way ; but this time we got to consider the enormous pressure, so the fabrication should be hidden inside of pipe-like structure in order to push it precisely into the hole and once it’s in there, we open the umbrella to close the leak.
Of course the fabric (or whatever the right materials) should be the one that can withstand the pressure of gushing oil.
Once the pressure diminishes, we can pour the cement on top of that like DP tried with mud.