Im looking at what appears to mud or cement being injected above the blow out and being blown out of the way . If that is true ,this isn’t working. I hope I’m wrong.
Wow, looking at the new angle... it’s all clear again.
It's not (true, that is). When they started the mud flow, it was being fed in at the BOTTOM of the blowout preventer (BP). They intend to feed the mud in so fast that the mud will flow both out of the top of the BP and down the well bore (i.e. the BP itself will act as a "flow restrictor"). This will force the oil (and gas) back down the well bore, they hope far enough that the high density of the column of mud in the well bore will counterbalance the upward pressure of the oil.