Back to results
US 2013/0220627 A1Published application
High Energy Tubular Shear
AssigneeBastion Technologies, Inc.
InventorsCharles Don COPPEDGE, Shyang Wen TSENG, George O. FABELA
Life of this patent
Estimating the term…
Abstract
A high energy tubular shear is connectable within a drilling system and includes a body forming a bore through which a tubular is disposed, a cross-bore intersecting the bore, opposing cutters moveably positioned in the cross-bore on opposite sides of the bore, and the each cutter in hydraulic communication with a respective hydraulic intensifier.
Claims20
A subsea well system, comprising:
- a safing assembly connector interconnecting a lower safing assembly to an upper safing assembly, the lower safing assembly connected to a blowout preventer stack on a subsea well and the upper safing assembly connected to a marine riser;
- the lower safing assembly comprising lower slips to engage a tubular suspended in a bore formed through the lower and the upper safing assemblies;
- the upper safing assembly comprising upper slips operable to engage the tubular;
- and
- a high energy tubular shear positioned between the upper slips and the lower slips, the high energy tubular shear comprising:
- a body forming the bore through which the tubular is disposed;
- a cross-bore intersecting the bore;
- opposing cutters moveably positioned in the cross-bore on opposite sides of the bore;
- and
- the each cutter in hydraulic communication with a respective hydraulic intensifier.
7 more elements
A tubular shear connectable within drilling system, comprising:
- a body forming a bore through which a tubular is disposed;
- a cross-bore intersecting the bore;
- opposing cutters moveably positioned in the cross-bore on opposite sides of the bore;
- and
- the each cutter in hydraulic communication with a respective hydraulic intensifier.
2 more elements
A subsea well safing sequence, comprising:
- utilizing a safing assembly installed between a blowout preventer stack of a subsea well and a marine riser, the safing assembly comprising a lower safing assembly connected to the blowout preventer stack and an upper safing assembly connected to the marine riser forming a bore between the riser and the blowout preventer stack;
- securing a tubular suspended in the bore at a position in the lower safing assembly;
- securing the tubular at a position in the upper safing assembly;
- utilizing a high energy shear having a tubular extending through a bore into a wellbore, the high energy shear comprising:
- a body forming the bore through which the tubular is disposed;
- a cross-bore intersecting the bore;
- opposing cutters moveably positioned in the cross-bore on opposite sides of the bore;
- and
- the each cutter in hydraulic communication with a respective hydraulic intensifier;
- applying a hydraulic pressure to the respective hydraulic intensifiers;
- moving the cutters toward each other in response to the application of hydraulic pressure to the respective hydraulic intensifiers;
- and
- shearing the tubular in response to moving the cutters toward each other.
10 more elements
Dependencies are inferred from the claim text.