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US 12,723,479 B2Granted
Insensitive high explosive based tubing cutter
AssigneeHalliburton Energy Services, Inc.
InventorsChristopher C. Hoelscher, Jason Paul Metzger
Life of this patent
Estimating the term…
Abstract
Provided is a shaped charge for use in a radial cutter. The shaped charge, in one example, includes a circular charge formed into a predetermined shape, the predetermined shape selected to form a concave edge. The circular charge, in this example, is formed from a Triaminotrinitrobenzene based material. The shaped charge, in this example, additionally includes a liner shaped to extend along the concave edge.
Claims27
A shaped charge for use in a radial cutter, comprising:
- a disk-shaped charge having first and second opposing primary surfaces and a concave edge adjoining the first and second opposing surfaces, wherein the disk-shaped charge is formed from a Triaminotrinitrobenzene based material, and further wherein the disk-shaped charge has a corresponding circular opening centered substantially about a centerline thereof, the circular opening having an opening face that is perpendicular to the first and second opposing primary surfaces;
- a liner shaped to extend along the concave edge;
- a circular booster charge positioned within the circular opening, wherein the circular booster charge is formed into a shape having a second concave edge, the second concave edge pointed in a same direction as the concave edge of the disk-shaped charge and pointed toward the opening face that is perpendicular to the first and second opposing primary surfaces and pointed in a same direction as the concave edge;
- and
- a flyer plate shaped to extend along the second concave edge, the flyer plate located between the circular booster charge and the opening face that is perpendicular to the first and second opposing primary surfaces.
2 more elements
A method for cutting a downhole object, comprising:
- placing a radial cutter within a tubular in a wellbore using a conveyance, the radial cutter including;
- a shaped charge, the shaped charge including;
- a disk-shaped charge formed into a predetermined shape, the predetermined shape selected to have a circular opening centered substantially about a centerline thereof and form a concave edge, wherein the disk-shaped charge is formed from a Triaminotrinitrobenzene based material, and further wherein the circular opening has an opening face that is perpendicular to the first and second opposing primary surfaces;
- a liner shaped to extend along the concave edge;
- a circular booster charge positioned within the circular opening, wherein the circular booster charge is formed into a shape having a second concave edge, the second concave edge pointed in a same direction as the concave edge of the disk-shaped charge and pointed toward the opening face that is perpendicular to the first and second opposing primary surfaces and pointed in a same direction as the concave edge;
- and
- a flyer plate shaped to extend along the second concave edge, the flyer plate located between the circular booster charge and the opening face that is perpendicular to the first and second opposing primary surfaces;
- and
- a detonation feature axially positioned proximate the disk-shaped charge;
- and
- a pair of opposing circular retainer rings axially disposed about the disk-shaped charge;
- a cartridge assembly substantially enclosing the shaped charge;
- and
- detonating the radial cutter using the detonation feature to cut an object positioned radially outside or radially inside the shaped charge.
11 more elements
Dependencies are inferred from the claim text.