Circular shaped charge
AssigneeHalliburton Energy Services, Inc.
InventorTony F. Grattan
Life of this patent
Estimating the term…
Abstract
A circular shaped charge and methods of manufacture, shipping and assembly. An circular shaped charge is manufactured as two separate charge halves, upper and lower, and a separate continuous liner or pair of continuous half liners. Preferably, each charge half is formed of a number of segments, each comprising a reduced weight of explosive which can be shipped under preferred regulations. The explosive contains sufficient binder to prevent damage to the charge segments during shipping and assembly at a job site. The separately shipped components are assembled at the job site to form a complete circular shaped charge useful, for example, in a tubing cutter.
Claims39
A circular shaped charge comprising:
- a pair of circular half charges, each half charge comprising a substantially solid mixture of an explosive material and a binder formed into a predetermined shape, said shape selected to form a concave outer edge when said pair of half charges are placed together, and
- a continuous liner shaped to mate with said concave outer edge.
A circular shaped charge comprising:
- a pair of circular half charges, each half charge comprising a plurality of circular segments of a substantially solid mixture of an explosive material and a binder formed into a predetermined shape, said shape selected to form a concave outer edge when said segments are assembled into a pair of half charges and said pair of half charges are placed together, and
- a continuous liner shaped to mate with said concave outer edge.
A method for making a circular shaped charge comprising:
- forming a plurality of shaped half charge circular segments of a substantially solid mixture of an explosive material and a binder formed into a predetermined shape, said shape selected to form a concave outer edge when said segments are assembled into a pair of half charges and said pair of half charges are placed together, and
- forming a continuous liner shaped to mate with said concave outer edge.
Dependencies are inferred from the claim text.