Abstract: A subsea well system includes a safety assembly connected between a marine riser and a subsea wellhead, and an ejector bollard connected with the safety assembly and having a piston operable from a retracted position to an extended position to push an upper portion and a lower portion of the safety assembly apart and thereby physically separate the marine riser from the subsea wellhead.

Abstract: A ram or shutter device includes rams operable between an open position withdrawn from a bore to a closed position to contact a tubular disposed in the bore, the rams may not seal the bore. A well system in accordance to an aspect of the disclosure includes an assembly providing a bore in communication with a wellbore, a device operable to shear a tubular disposed in the bore, and a shutter device having rams operable between an open position withdrawn from the bore to a closed position contacting the tubular in the bore.

Abstract: A subsea well safing method and apparatus to secure a subsea well in the event of a perceived blowout in a manner to mitigate the environmental damage and the physical damage to the subsea wellhead equipment to promote the ability to reconnect and recover control of the well. The safing assembly is connectable to a subsea well and a marine riser. Pursuant to a safing sequence, the well tubular is secured in the upper and lower safing assemblies and the tubular is then sheared between the locations at which it has been secured. Subsequently, an ejection device may be actuated to physically separate the upper safing assembly and the connected marine riser from the lower safing assembly the subsea well.

Abstract: A subsea well safing method and apparatus to secure a subsea well in the event of a perceived blowout in a manner to mitigate the environmental damage and the physical damage to the subsea wellhead equipment to promote the ability to reconnect and recover control of the well. The safing assembly is connectable to a subsea well and a marine riser. Pursuant to a safing sequence, the well tubular is secured in the upper and lower safing assemblies and the tubular is then sheared between the locations at which it has been secured. Subsequently, an ejection device may be actuated to physically separate the upper safing assembly and the connected marine riser from the lower safing assembly the subsea well.

Abstract: A ram or shutter device includes rams operable between an open position withdrawn from a bore to a closed position to contact a tubular disposed in the bore, the rams may not seal the bore. A well system in accordance to an aspect of the disclosure includes an assembly providing a bore in communication with a wellbore, a device operable to shear a tubular disposed in the bore, and a shutter device having rams operable between an open position withdrawn from the bore to a closed position contacting the tubular in the bore.

Abstract: A subsea well safing method and apparatus adapted to secure a subsea well in the event of a perceived blowout in a manner to mitigate the environmental damage and the physical damage to the subsea wellhead equipment to promote the ability to reconnect and recover control of the well. The safing assembly is adapted to connect the marine riser to the BOP stack. Pursuant to a safing sequence, the well tubular is secured in the upper and lower safing assemblies and the tubular is then sheared between the locations at which it has been secured. Subsequently, an ejection device is actuated to physically separate the upper safing assembly and connected marine riser from the lower safing assembly that is connected to the BOP stack.