[grapeape]

Don't believe a word of this stuff.

The BOP was not designed to go that deep. That comes from the person who designed the thing. BP is the sole entity responsible for this mess and DO NOT buy into any BS they will float in the media.

[Smokin' Joe]

When the riser was cut off, it appeared there were two sections of drill pipe in there.

No BOP has been designed for drilling purposes to close over two drill strings, no pipe rams are designed to work with two joints of pipe in the way, and no shear rams are designed to cut double.

In short, it appears something got dropped in the hole when the blowout occurred, and that kept the BOP from functioning.

[Smokin' Joe]

Discovery of second pipe in Deepwater Horizon riser stirs debate among experts

[HoustonCurmudgeon]

The BOP was not designed to go that deep.

and you know this how?