Abstract: A subsea production system includes a blowout preventer stack that is adapted to seal and contain pressure in a well. The blowout preventer stack has a passageway through which a tubular string may extend into the well. The subsea production system includes a subsea wellhead and a safety shut-in system that has a valve assembly that is adapted to control flow and adapted to allow tools to be lowered therethrough on tubing. The subsea production system includes a cutting module that is adapted to be run into the passageway to allow tools to be lowered therethrough on tubing. The cutting module is further adapted to activate to shear the tubing that is lowered therethrough.
Type:
Grant
Filed:
December 17, 2002
Date of Patent:
August 8, 2006
Assignee:
Schlumberger Technology Corporation
Inventors:
Tye Schlegelmilch, Gary Rytlewski, Vance Nixon