https://oceanography.navy.mil/legacy/web/products/QUICKBIRD/101527/ProductFrame_id_210003303.html
https://oceanography.navy.mil/legacy/web/products/NCOM/NCOM.gulfmexico_caribbean_u.html

Perhaps a fresh look can be taken at looking at this spill as a point(albeit a large point) pollution source near the surface.

The deep currents in the area are not fast. It should be possible to do vector analysis and determine the net

effect of current forces on petroleum liquid as it rises and accelerates through the water column en route to the surface. Or, if containers of fluid with the same specific gravity as the oil from the well were released from the leak sources, the locations where they surface would result in an area of distribution similar to that of the leaking oil at the surface.

The current data is available from USN oceanographers among others. The theory is that the vast majority of the fluid can

be found passing through an area very near to the surface directly above each leak as adjusted for the net effect of the

currents. Let's look at the current data and find a depth and area on the surface that can feasibly be enclosed with a

plastic curtain hanging from the surface to a depth of some 20-30'. A column of oil may form in that curtain which can be pumped away.
Alternately, if the coordinates of the area where the slick first appeared are available, That would be a good spot to start. Perhaps the failure to contain the spill on the surface after the tragedy happened like this:regular oil boom was put in place. Because the oil was escaping so quickly, it formed a pool and escaped containment underneath the boom.