You keep using that word "cap"

I don't think it means what you think it means.

Via the BP website:
Subsea operational update:

• The riser was cut above the LMRP with shears at approximately 9:00 am CDT on June 3.

• The LMRP cap was placed on top of the LMRP at approximately 8:35 pm CDT on June 3.

• Gas first reached the Discoverer Enterprise at approximately 11:00 pm CDT on June 3; oil followed at approximately 11:10 pm CDT.

• During the first twelve hours of operation, 1810 barrels of oil were collected as the LMRP Cap was carefully operationalized.

So they are capturing roughly 3600 bbls a day? The well was estimated to be leaking anywhere from 5,000 to 70,000 bbls a day depending on whose numbers you believe. And that was before the damaged riser, which was partially restricting the flow, was cut away to allow the cap to be placed on top of the stack. Estimates are that the flow rate increased by 20% when the riser was removed. This is progress?

Live video of the leak can be seen here at the BP web site. Last time I checked, ROV2 from the Drillship Enterprise had a good view of the situation.