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| Number | Title | Issue Date |
| 7984674 | Perforating charge for use in a well A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness. ... | 07/26/2011 |
| 7954433 | Explosive shaped charge device The shaped charge device consists of an outer casing that has a removable cap on one end and a sealing plate on the other as well as an interior liner; the liner defining a plurality of forwardly opening conical cavities. The shaped charge device uses a two-part bin... | 06/07/2011 |
| 7878119 | Perforating charge for use in a well A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness. ... | 02/01/2011 |
| 7810431 | Explosive charge An explosive charge is disclosed which has a spatial shape comprising explosive material and, in the course of the explosion, unfolds a spatially anisotropic pressure action in at least one main action direction, in which the pressure action is greater than in the o... | 10/12/2010 |
| 7762193 | Perforating charge for use in a well A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness. ... | 07/27/2010 |
| 7721649 | Injection molded shaped charge liner A shaped charge liner formed by injection molding, where the liner comprises a powdered metal mixture of a first and second metal. The mixture includes about 50% to about 99% by weight percent of the first metal, about 1% to about 50% by weight percent of a second m... | 05/25/2010 |
| 7712416 | Apparatus and method for penetrating oilbearing sandy formations, reducing skin damage and reducing hydrocarbon viscosity A shaped charge and a method of using such to provide for large and effective perforations in oil bearing sandy formations while causing minimal disturbance to the formation porosity is described. This shaped charge uses a low-density liner having a filler material ... | 05/11/2010 |
| 7363862 | Multi-purpose single initiated tandem warhead A multi-purpose tandem warhead needing only a single initiation has a casing that forms front, middle and rear portions. A shaped charge is positioned in the rear portion of the casing and a fragmentation charge is positioned in the front portion of the casing. The ... | 04/29/2008 |
| 7360587 | Debris reduction perforating apparatus A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An ... | 04/22/2008 |
| 7360488 | Single phase tungsten alloy A single phase metal alloy usually for forming a shaped charge liner for a penetrating jet or explosively formed penetrator forming warhead consists essentially of from a trace to 90%, by weight, of cobalt, from 10% to 50% by weight, of tungsten, and the balance nic... | 04/22/2008 |
| 7360599 | Debris reduction perforating apparatus and method for use of same A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An ... | 04/22/2008 |
| 7340025 | Plasma antenna generator and method of using same A plasma antenna generator includes a ceramic portion including an ionizable material, an explosive charge adapted to project at least part of the ceramic portion upon detonation at a velocity sufficient to ionize the ionizable material, and a detonator coupled with... | 03/04/2008 |
| 7337703 | Modular breaching apparatus Modular breaching apparatus including a plurality of breaching elements, each breaching element being formed with a groove for receiving therein a flexible explosive element capable of producing an explosive force sufficient for breaching a structure, wherein each b... | 03/04/2008 |
| 7332002 | Low sulfur coal additive for improved furnace operation The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The... | 02/19/2008 |
| 7331268 | Explosive neutralization method and device A method for neutralizing explosive ordnance is provided. According to an aspect of the method, an energetic charge is activated to produce a shockwave, which is imparted at an effective velocity and temperature on a gas to ionize the gas for creating plasma and to ... | 02/19/2008 |
| 7299734 | Synchronously/synergeticly timed fuse procedure or process A synchronous or synergeticly timed fuse is installed into ordnance (bombs, artillery shells, depth charges etc.), the ordnance is delivered to a target area and a simultaneous (synchronous), or a synergetic (not neccessarily synchronous yet the energies add togethe... | 11/27/2007 |
| 7284601 | Casing conveyed well perforating apparatus and method Disclosed is a device and method for externally perforating a well-bore casing. The perforating apparatus is attached to the outside of the casing itself and is conveyed along with the casing when it is inserted into the well bore. The perforation is accomplished us... | 10/23/2007 |
| 7284490 | Rod warhead systems and associated methods Rod warhead systems and associated methods are disclosed. In one embodiment, a projectile having an arrangement of rods is propelled along a trajectory toward an object. The arrangement of rods is radially expanded from a first position to a second position prior to... | 10/23/2007 |
| 7286213 | Processes and devices enabling the entry of a target into a zone to be detected A process to detect the entry of a target into a zone, such process wherein it has the following stages: an illuminating beam is projected in the direction of the target by at least one source, the beam reflected o... | 10/23/2007 |
| 7278354 | Shock initiation devices including reactive multilayer structures The invention provides shock initiation devices comprising multilayer structures with constituent layers that undergo an exothermic self-propagating reaction once initiated by shock. The multilayer structures may be used as components in shaped charges, EFP devices,... | 10/09/2007 |
| 7278353 | Reactive shaped charges and thermal spray methods of making same Shaped charge liners are made of reactive materials formed by thermal spray techniques. The thermally sprayed reactive shaped charge materials have low porosity and high structural integrity. Upon detonation, the reactive materials of the shaped charge liner undergo... | 10/09/2007 |
| 7261036 | Shaped charge liner A liner for a shaped charge having a composition comprising greater than 90% by weight of powdered tungsten and up to 10% by weight of powered binder, the composition being formed into a substantially conically shaped body and having a crystal structure of substanti... | 08/28/2007 |
| 7246548 | Well perforating gun Embodied herein is a perforating gun wall that withstands short, high energy pulses of an explosion retained within a loading tube with numerous explosive shaped charges. The perforating gun wall includes two or more layers with an impact strength sufficient to main... | 07/24/2007 |
| 7237486 | Low debris perforating gun system for oriented perforating Disclosed herein is a shaped charge assembly for use in a perforating gun. The shaped charge assembly includes a shaped charge combined with a longitudinal spine extending along a portion of a perforating gun barrel. The shaped charge can be secured to the spine wit... | 07/03/2007 |
| 7228907 | High energy gas fracturing charge device and method of use A high energy gas fracturing device, adapted to be lowered into a well. The device comprises a closed tube made of strong material, sized to fit into the well and having at least one sidewall, which defines a set of openings. A set of closure elements seal the openi... | 06/12/2007 |
| 7195066 | Engineered solution for controlled buoyancy perforating The weight of a shaped charge carrier is predetermined as a buoyancy control parameter for perforating guns. Each charge carrier comprises a co-axial assembly of inner and outer carrier units. Both carrier units may be fabricated from low density metals or composite... | 03/27/2007 |
| 7165614 | Reactive stimulation of oil and gas wells A method and apparatus for stimulating producing strata in oil or gas wells. The formation is penetrated using shaped charges, and an oxygen-rich material then is introduced into the producing formation. Thus, oxygen is available within the formation to sustain an e... | 01/23/2007 |
| 7150231 | Active part An active part of an ammunition device. A casing is provided with a sleeve in association with an opening of the casing. A sprung device is arranged between a locking device arranged at the opening of the casing and the sleeve. The end of the sleeve facing away from... | 12/19/2006 |
| 7146913 | Shaped charge tubing cutter A shaped charge detonation booster comprises a tubular wall body of substantially constant outside diameter for enclosing an axial primer path that terminates with an enlarged main cavity volume. Preferably, the main cavity is positioned within the juncture plane of... | 12/12/2006 |
| 7104326 | Apparatus and method for severing pipe utilizing a multi-point initiation explosive device A system and method for making and using a multi-point initiation explosive device that produces an enhanced pressure wave for severing tubing, pipe or casing in an oil or gas well. At least two opposed initiators initiate a column of explosive material from opposit... | 09/12/2006 |
| 7086629 | Severance of polycarbonates and polycarbonate laminates with linear shaped charge The present invention involve a method for severance of materials made of polycarbonate, polycarbonate laminate and aciylic/polycarbonate laminate, a canopy fracturing system and a conopy having the canopy fracturing system. The present invention utilizes a l... | 08/08/2006 |
| 7073589 | System for fracturing wells using supplemental longer-burning propellants A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental prope... | 07/11/2006 |
| 7073448 | Shaped charge tubing cutter A shaped charge tubing cutter includes a minimal contact suspension to isolate the cutter explosive from the housing and sub structure. A charge detonation booster main-cavity is located on the juncture of the charge truncation planes. Explosive in the booster main-... | 07/11/2006 |
| 7047886 | Method and apparatus for removing obstructions in the mines The present invention is directed to a system for fragmenting rock obstacles and obstructions in mines. The system uses a projectile having a flat or concave nose and a detonating device that has a safety pin to prevent a striker from prematurely igniting the primer... | 05/23/2006 |
| 7040210 | Apparatus and method for restraining and releasing a control surface An apparatus includes a restraint for restraining a first control surface in a stowed configuration and a severing mechanism for parting the restraint to allow the first control surface to move into an operational configuration. A vehicle includes a body, a first co... | 05/09/2006 |
| 7032809 | Seam-welded metal pipe and method of making the same without seam anneal An apparatus and method for making a seam-welded steel pipe free of untempered martensite without seam anneal. The method includes selecting a steel containing a carbon concentration below a predetermined level, for example, 0.14% or 0.12% by weight. The method also... | 04/25/2006 |
| 7025000 | Mechanism for reducing the vulnerability of high explosive loaded munitions to unplanned thermal stimuli A new mechanism substantially reduces the vulnerability of explosive load munitions to thermal stimuli, such as fire or heat during transport and storage, thus enhancing personnel safety and the survivability of adjacent munitions. The mechanism includes a threaded ... | 04/11/2006 |
| 7011027 | Coated metal particles to enhance oil field shaped charge performance A liner for a shaped charge comprising powdered heavy metal tungsten coated with a metal binder coating compressively formed into a liner body. Each of the powdered heavy metal particles are substantially uniformly coated with metal binder coating. The preferred pow... | 03/14/2006 |
| 7000545 | Multifunctional breaching apparatus Breaching apparatus including a housing constructed of a material that disintegrates upon explosion without significant amounts of fragments being given off, and an explosive element disposed in the housing capable of producing an explosive force sufficient for brea... | 02/21/2006 |
| 6983698 | Shaped charge explosive device and method of making same A shaped charge explosive device which includes an axially symmetric body of explosive material, a liner lining the forward end of the body, and a detonator disposed at the bottom of the body. The liner has an apex disposed along the symmetry axis of the body and th... | 01/10/2006 |
