Bildet over er fra Rachel Maddow på MSNBC som siterer den ferske rapporten til Det Norske Veritas. Fra konklusjonen i rapporten «Forensic Examination of Deepwater Horizon Blowout Preventer»:
The primary cause of failure was identified as the BSRs failing to close completely and seal the well due to a portion of drill pipe becoming trapped between the ram blocks. The position of the drill pipe between the Upper Annular and the upper VBRs led to buckling and bowing of the drill pipe within the wellbore. Once buckling occurred the BSRs would not have been able to completely close and seal the well. The buckling most likely occurred on loss of well control.
Den viktigste årsaken til ulykken:
The BSRs failed to fully close and seal due to a portion of drill pipe trapped between the blocks.
On closure of the BSRs, a portion of the drill pipe cross section was outside of the BSR shearing surfaces. The portion of the drill pipe cross section outside the shear blade surfaces became trapped between the ram block faces, preventing the blocks from fully closing and sealing.
Les rapporten her (på høyre side.)