Subsea Well Safing System

摘要

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.

主权项

1. A subsea well safing package, comprising:
an assembly connector interconnecting a lower assembly and an upper assembly, the lower assembly is to be connected to a subsea well; the lower assembly comprising lower slips to engage and secure a tubular suspended in a bore formed through the lower assembly and the upper assembly; the upper assembly comprising upper slips operable to engage and secure the tubular; and a shear positioned between the upper slips and the lower slips, the shear operable to shear the tubular.