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| Number | Title | Issue Date |
| 7430965 | Debris retention perforating apparatus and method for use of same A perforating apparatus (100) includes a plurality of shaped charges (102) each having an initiation end and a discharge end. A detonating cord (116) is operably coupled to the initiation ends of the shaped charges (102). A carrier (10... | 10/07/2008 |
| 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 |
| 7210409 | Modular explosives cartridge and novel spider construction A modular explosives cartridge comprises a tubular body having lockable coupling members secured on opposite ends thereof to form a bayonet coupling between opposite ends of respective cartridges to form an elongate tubular explosives cartridge. The lockable couplin... | 05/01/2007 |
| 7134375 | Visual assistance guide system for disrupter placement and method of use A visual assistance guide system for placement of a disrupter device for explosive ordinance disposal includes a checkerboard base and adhesive containing areas on the base. One of the adhesive containing areas is used to secure a disrupter device on the base. The c... | 11/14/2006 |
| 6978848 | Method and apparatus for penetrating subsurface formations A method and apparatus for driving at least one explosive driven projectile into an open hole or well bore of a subterranean formation for the purpose of stimulating productive formation. The apparatus is capable of pivoting within the open hole or well bore for des... | 12/27/2005 |
| 6901865 | Primer casing and method of charging a blasthole Primer casing (1) comprising sleeve portion (5) and leading portion (5a), wherein sleeve portion (5) includes tabs (6) to retain primer (11) and blasthole engagement means (2), and wherein leading portion (5... | 06/07/2005 |
| 6672673 | Ore pass inspection system The present invention discloses an apparatus and method for imaging and clearing an ore pass hang-up. The apparatus includes: a platform that is movable along generally a longitudinal direction of an ore pass; a controllable propulsion unit capable of pro... | 01/06/2004 |
| 6435096 | Method and apparatus for controlled small-charge blasting by decoupled explosive A cartridge containing an explosive charge is inserted at the bottom of a short hole drilled in the rock. The cartridge is held in place or stemmed by a massive stemming bar of high-strength material such as steel. The cartridge incorporates additional in... | 08/20/2002 |
| 6283032 | Projectile with controlled decomposition and integrated charge in the area of the effective mass A smoke-generating projectile has a decomposable effective mass, the mass including a quick-burning deception component for generating spontaneous smoke, and a slow-burning concealment component for generating persistent smoke. The projectile includes an ... | 09/04/2001 |
| 5957540 | Blasting positioning device A device for unblocking mine raises which has multiple flexible arms attached to a top hollow tube which carries the explosive material. Flexible extension poles are attached to a top hollow tube section and hollow tube sections. The flexible arms allow f... | 09/28/1999 |
| 5829538 | Full bore gun system and method A tubing conveyed perforating apparatus is shown which includes a tubular assembly made up of a plurality of tubular sections. One or more elongate charge holders are located within the interior bore of the tubular assembly and carry explosive charges the... | 11/03/1998 |
| 5816343 | Phased perforating guns A perforating gun having a base structure made of a deformable material. The base structure includes support rings integrally attached to one another by connector portions. The capsule charges are mounted in corresponding support rings, and each support r... | 10/06/1998 |
| 5701964 | Perforating charge carrier assembly and method A through-tubing perforating gun and method is provided. The assembly comprises an elongated carrier strip, a plurality of perforating charges, and means for connecting the plurality of charges to the carrier strip. Each of the charges has a focal axis al... | 12/30/1997 |
| 5590723 | Perforating charge carrier assembly The invention provides a new strip carrier assembly for carrying shaped charges, such as is particularly useful in perforating guns as are utilized to perforate oil and gas wells. The strip carrier includes a coupling member which couples adjacent strip c... | 01/07/1997 |
| 5542480 | Perforating gun with retrievable mounting strips A longitudinally slotted carrier having one end adapted for mounting on a tubing string, the carrier being nonplanar, with a slotted configuration and interior dimensions to enable capsule charge orientation at selected phases between 0 and 360 degrees. T... | 08/06/1996 |
| 5259316 | Method and apparatus for wet/dry, small bore hole explosive device A wet/dry explosive assembly for use with small diameter bore holes is disclosed. The device utilizes a small diameter watertight inner containment vessel to house a predetermined amount of blasting agent, such as ammonium nitrate with fuel oil (AN/FO). A... | 11/09/1993 |
| 5131465 | Perforating apparatus for circulating cement In accordance with an illustrative embodiment of the present invention, a perforating gun apparatus for forming holes in a well casing through which cement can be circulated includes a mandrel, four arm-mounted, shaped charge carriers on the body, and bow... | 07/21/1992 |
| 5095999 | Through tubing perforating gun including a plurality of phased capsule charges mounted on a retrievable base strip via a plurality of shatterable support rings A through-tubing perforating gun includes an angularly shaped base strip having first and second surfaces and including a plurality of recesses in the first surface and a plurality of recesses in the second surface. A plurality of capsule charges are moun... | 03/17/1992 |
| 5024159 | Plane-wave forming sheet explosive An explosive sheet which is formed by a layer of explosive material, a layer of foil, and an inert space forming material. These three layers are repeated to number, n, times to form a composite plane-wave forming explosive sheet.... | 06/18/1991 |
| 5024158 | Multi-directional initiator for explosives A method of blasting cap-sensitive, non-nitroglycerine-sensitized explosives and an initiating assembly for use in the method are provided. The method comprises initiating a column of the explosives by directing two radial/forward shock forces from an ini... | 06/18/1991 |
| 4993324 | Retainer for grenade body loading assemblies for demolition of unexploded ordance A retainer for retaining a body loading assembly of a U.S. Army M42 or M46 eneral purpose grenade in firm intimate contact with at least one detonating cord, or an electric or non-electric blasting cap for use in explosive demolition of unexploded ordnance... | 02/19/1991 |
| 4951744 | Angularly shaped unitary structured base strip comprised of a specific material adapted for phasing charges in a perforating gun A perforating gun includes a base strip having an angular cross section, the base strip being a single unitary structure and essentially comprising at least two longitudinally disposed surfaces, a first surface and a second surface, a first plurality of c... | 08/28/1990 |
| 4844167 | Through-tubing perforating apparatus A through-tubing perforating apparatus for use in improving wellbore production. A plurality of shaped charges are interconnected by rigid links that each have eyelets to receive the suspension wire. These links, in conjunction with a guide which initiall... | 07/04/1989 |
| 4815384 | Housing for joinable cutting charges A housing for joinable or interconnectable cutting charges, which is constituted of a casing, two end surfaces or plates, two spacer flaps, and of the insert. The frontal surfaces of the inserts are at least flush with the surfaces of the end plates or pr... | 03/28/1989 |
| 4800815 | Shaped charge carrier A shaped charge carrier assembly includes a thin wall carrier having a charge opening disposed therethrough for freely receiving a shaped charge therein. A deformable retaining device is integrally formed with the thin wall carrier adjacent a periphery of... | 01/31/1989 |
| 4793887 | Underwater bonding of surface-conforming material Surface-conforming materials, such as sheets, ribbons, tapes or moldable material may be adhered to a wide variety of underwater target surfaces with a cyanoacrylate adhesive. The cyanoacrylate adhesive is evacuated from it container under water, applied ... | 12/27/1988 |
| 4793888 | System for underwater and cold temperature bonding Objects may be bonded to target surfaces of a variety of materials, including rough surfaces, surfaces at temperatures down to -40° F. and surfaces submerged under water, by securing a sheet of compliant material to the object, applying cyanoacylate to t... | 12/27/1988 |
| 4763576 | Detonating energy transmittal device A detonating energy transmittal device is provided which, when combined with even relatively low-power blasting caps, is capable of promoting and initiating the explosive detonation of liquid nitromethane, which device comprises a plurality of layers of f... | 08/16/1988 |
| 4739707 | Shaped charge carrier assembly A shaped charge carrier assembly is provided for use in a perforating gun of the type used to perforate oil or gas wells. The assembly includes at least one shaped charge including an outer case having an outer surface and a first shoulder extending radia... | 04/26/1988 |
| 4722281 | Intermittent explosion apparatus and method of using such apparatus The present invention relates to an apparatus for providing intermittent explosion of a plurality of explosive charges initially attached to an explosive capsule support belt. The belt is indexed so that a plurality of spaced capsules on the belt can be s... | 02/02/1988 |
| 4718346 | Explosive charge for the explosive welding of large diameter pipes, and a method for its manufacture The disclosure relates to an explosive charge intended for the explosive jointing of, primarily, large-diameter pipes, such as pipeline pipes. The charge according to the invention is intended to be delivered as a unit ready to be applied immediately on s... | 01/12/1988 |
| 4716833 | Method of assembling a tanged charge holder A shaped charge carrier assembly includes a strip type carrier having openings therein for receiving shaped charges. Each of the openings includes first and second diagonally opposed pairs of resilient tabs for snugly engaging an outer case of the shaped ... | 01/05/1988 |
| 4706567 | Explosive charges The disclosure relates to a method for producing charges for explosive jointing of large-diameter pipes such as pipelines. According to the invention, such charges are formed in that a strip-shaped flat explosive is wound and joined together to form a cir... | 11/17/1987 |
| 4702168 | Sidewall core gun Disclosed herein is a sidewall core gun attached to the lower end of a drill string, enabling the taking of core samples from within a deviated borehole. The gun also includes an improved charge assembly, including a detonatable core and one or more defla... | 10/27/1987 |
| 4694754 | Multi-phase charge holder A shaped charge carrier assembly apparatus includes a carrier having a plurality of carrier segments integrally formed from a single substantially flat elongated sheet of structural material. An interconnecting portion is located between each two adjacent... | 09/22/1987 |
| 4681037 | Tanged charge holder A shaped charge carrier assembly includes a strip type carrier having openings therein for receiving shaped charges. Each of the openings includes first and second diagonally opposed pairs of resilient tabs for snugly engaging an outer case of the shaped ... | 07/21/1987 |
| 4649825 | Explosive separation system for composite materials An explosive separation system for making a clean cut in composite laminate aterials in which a flexible linear shaped charge is maintained in a molded holder of a low-density, energy-absorbing material. The flexible linear shaped charge is molded in the h... | 03/17/1987 |
| 4598775 | Perforating gun charge carrier improvements A perforating gun has a charge carrier assembly housed therein comprised of a plurality of charge holders connected together in tandem. Shaped charges are supported within each of the charge holders, such that the corresponding charges of each holder are ... | 07/08/1986 |
| 4537133 | Non-incendive rock-breaking explosive charge Non-incendive explosive charge for use in flammable atmospheres includes a layer of damp salt as quenching material surrounding a charge enclosed in an inner housing. An outer housing is strong and pliable, being formed of reinforced rubbery material, to ... | 08/27/1985 |
| 4513665 | Method for loading explosive charges into blastholes formed in a subterranean formation A method for loading explosive charges into blastholes in a subterranean formation for forming a fragmented permeable mass of formation particles in an underground cavity in the formation is provided. Upper and lower voids spaced apart vertically from eac... | 04/30/1985 |
