Open cantilever tension system
AssigneeSchlumberger Technology Corporation
InventorsErling Tambs, Harald Langenes
Life of this patent
Estimating the term…
Abstract
A drilling system includes a hull, an open cantilever mounted on the hull, a blowout preventer stack supported by the open cantilever, a plurality of beams installed horizontally and supported on the open cantilever, and a conductor tension unit cage including a conductor tension unit. The conductor tension unit cage is installed below the blowout preventer stack, and is supported by the plurality of beams. The conductor tension unit is configured to apply tension to a conductor pipe extending through the blowout preventer stack when the open cantilever is skidded out from the hull.
Claims15
A drilling system, comprising:
- a hull;
- an open cantilever mounted on the hull, wherein the open cantilever is configured to skid out from the hull;
- a blowout preventer stack supported by the open cantilever;
- a plurality of beams installed horizontally and supported on the open cantilever;
- and
- a conductor tension unit cage comprising a conductor tension unit,
- wherein the conductor tension unit cage is installed below the blowout preventer stack, and is supported by the plurality of beams, and
- wherein the conductor tension unit is configured to apply tension to a conductor pipe extending through the blowout preventer stack when the open cantilever is skidded out from the hull.
A drilling system, comprising:
- a hull;
- an open cantilever mounted on the hull, wherein the open cantilever is configured to skid out from the hull via a plurality of cantilever skidding beams;
- a blowout preventer stack supported by the open cantilever;
- and
- a conductor tension unit cage comprising a conductor tension unit,
- wherein the conductor tension unit cage is removably attached to the plurality of cantilever skidding beams.
A system, comprising:
- an open cantilever;
- a blowout preventer stack supported by the open cantilever,
- wherein the open cantilever defines a well center through which well center drilling operations may be performed through the blowout preventer stack;
- a plurality of beams installed horizontally with respect to an opening of the open cantilever, wherein the plurality of beams is supported on the open cantilever;
- and
- a conductor tension unit cage comprising a conductor tension unit,
- wherein the conductor tension unit cage is installed below the blowout preventer stack, and is supported by the plurality of beams, and
- wherein the conductor tension unit is configured to apply tension to a conductor pipe extending through the blowout preventer stack at a position away from the well center.
Dependencies are inferred from the claim text.