The riser pipe of the BP Deepwater Horizon oil well, moments before it was cut by the giant shear, 1 June 2010. via theoildrum.com The riser pipe of the BP Deepwater Horizon oil well, moments before it was cut by the giant shear.    The riser pipe of the BP Deepwater Horizon oil well, moments after it was cut by the giant shear, 1 June 2010. via theoildrum.com The riser pipe of the BP Deepwater Horizon oil well, moments after it was cut by the giant shear.  Deepwater BP Oil Spill