BP Oil Spill
The idea is to use the btm (or first dome) with multiple oil outlet points around its perimeter equi.-spaced, say 20 outlets at 18 degrees, Each outlet can then be buoyed via pipeline to the surface to say a Tanker or holding bay for Oil collection.
A Professional Marine Engineer can thus decide and design such a dome system first in Pilot form - to test and simulate similar conditions that prevail at the sea-bed Oil
Leak point.
Thereafter a more realistic dome system could be proposed. I dont know the actual hole dia. of the leak point, but could imagine a dome of say 100 or even 200 metres in diameter. Dome height would depend on existing setup at seabed.
The current oil flow rate/volume/flow inertia cannot be stopped in its tracks. The numbers are just too big. One would have to somehow spread the flow and redirect it into Tankers, during which time one can then start to counter to existing pressure on the sealing dome(s) in step form. More double conical domes can be added as needed.
A further great idea would be to use a pipe system through the centre of one the dome(s) to create a hydraulic push-back system which would enable the pressure to act against itself mechanically and thus seal itself off, no matter what the actual oil pressure is. This unit could be duplicated to allow removal for repairs or refitment.
A pressure equalizer in other words. Oil pressure can be related into mechanical advantage.
The two above concepts could be made to operate in unison. As pressure is temporarily reduced at the leak point (via above surface flow collection), then mechanical pressure can incrementally increased below to slow the Oil Leak flow rate. Thus a loop can in theory be created to hopefully eventually seal the Oil Leak and lock it down.