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US 7,546,806 B1Granted
Selectable output well perforator and method for producing variable hole profiles
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsArthur S. Daniels, Ernest L. Baker
Life of this patent
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Abstract
Various shaped charges and methods of operation produce multiple jets in various profiles by employing multiple initiation points to address various earthen formations and producing different types of perforations in well bores. The shaped charge device includes a configuration of components wherein multiple detonation tracks are used to allow selective initiation and operation. Dual or quad initiation may be provided to initiate operation.
Claims18
A shaped charge, comprising:
- a case having an open front end, a closed rear end, an interior and a longitudinal axis;
- an explosive material disposed in the interior of the case;
- and
- a liner disposed over the explosive material;
- wherein the case includes a first channel extending from an opening on the rear end of the case along the longitudinal axis to an opening in the interior of the case adjacent the explosive material;
- and a pair of second channels, the pair of second channels having a common opening on the rear end of the case, the common opening being a different opening than the opening for the first channel, the pair of second channels ending in a pair of diametrically opposed openings in the interior of the case adjacent the explosive material, the pair of openings being disposed on opposite sides of the opening of the first channel.
3 more elements
A shaped charge, comprising:
- a case having an open front end, a closed rear end, an interior and a longitudinal axis;
- an explosive material disposed in the interior of the case;
- and
- a liner disposed over the explosive material;
- wherein the case includes four channels extending from a common opening on the rear end of the case to four diametrically opposed openings in the interior of the case adjacent the explosive material and the common opening of the rear end of the case is centered on the longitudinal axis, and the four common openings in the interior of the case are circumferentially spaced about 90 degrees apart and are equidistant from the longitudinal axis, and the shaped charge further comprises a fifth channel extending from an opening on the rear end of the case to an opening in the interior of the case adjacent the explosive material, the opening on the rear end of the case being a different opening that the common opening of the four channels, the opening in the interior of the case being centered on the longitudinal axis.
2 more elements
A shaped charge, comprising:
- a case having an open front end, a closed rear end, an interior and a longitudinal axis;
- an explosive material disposed in the interior of the case;
- and
- a liner disposed over the explosive material;
- wherein the case includes a first channel extending from an opening on the rear end of the case along the longitudinal axis to an interior opening in the interior of the case adjacent the explosive material;
- and a pair of second channels extending from a pair of openings on the rear end of the case to a pair of diametrically opposed interior openings in the interior of the case adjacent the explosive material, the pair of diametrically opposed interior openings of the second channels being disposed on opposite sides of the first channel.
3 more elements
Dependencies are inferred from the claim text.