Class 175/4.6 - Concave-shaped charge

Subclass of Class 175 - Boring or penetrating the earth
Definition: Subject matter directed to means in which the explosive
No. of applications: 27
Last issue date: 10/07/2010

Application No.	Application Title	Issue Date
20100252323	PROCESS FOR ASSEMBLING A LOADING TUBE A process is disclosed for assembling a loading tube for a perforating gun for use in a perforating system. At a first location, e.g., a shop, which is not the location at which perforating operations will be conducted, the loading tube is completely assembled. The comp...	10/07/2010
20090038846	Perforating gun An improved perforating gun having a tubular housing, a tubular carrier and a charge carried by the tubular carrier. The tubular carrier comprises an inside diameter, an outside diameter and an opening disposed between the inside diameter and the outside diameter. The c...	02/12/2009
20080202755	One trip system for circulating, perforating and treating A well completion method and apparatus comprises a pipe string having a bottom attached boring bit and scraper or reamer. Above the bit at designated well fluid production locations, perforation assemblies are integrated into the pipe string. Each perforation assembly c...	08/28/2008
20080134925	Shaped Charge Assembly and Method of Damaging a Target A shaped charge assembly (10) comprises a housing (20), first shaped charge (24), a wave shaping relay charge (44) and a second shaped charge (30) located in the housing. The assembly (10) is configured such that a first active ...	06/12/2008
20080035373	Perforating gun connector Controlled Buoyancy Perforating technology for highly deviated and substantially horizontal wellbores may include long perforating guns assembled on a rig floor from a multiplicity of light weight and highly engineered shaped charge carrier joints. Tubular housings for ...	02/14/2008
20080029302	Perforating gun connector Controlled Buoyancy Perforating technology for highly deviated and substantially horizontal wellbores may include long perforating guns assembled on a rig floor from a multiplicity of light weight and highly engineered shaped charge carrier joints. Tubular housings for ...	02/07/2008
20070158109	Perforating Gun The present invention provides an apparatus for use in perforating a well having a plurality of explosive charges. Each explosive charge is adapted to generate a perforation tunnel in the formation adjacent to the well. In one embodiment, explosive charges are oriented ...	07/12/2007
20070119327	LOW DEBRIS PERFORATING GUN SYSTEM FOR ORIENTED PERFORATING Disclosed herein is a reinforcing system for a shaped charge assembly for use in a perforating gun. The shaped charge assembly includes a shaped charge combined with a longitudinal reinforcing system extending along a portion of a perforating gun barrel. The reinforcing...	05/31/2007
20070107899	Perforating Gun Fabricated from Composite Metallic Material A perforating gun and method of manufacture is provided for downhole perforation operations in a wellbore. The perforating gun includes tubular components fabricated from a multi-layer metallic/intermetallic laminate material. For example, the perforating gun may includ...	05/17/2007
20070095572	Ballistic systems having an impedance barrier A shaped charge assembly for use in a perforating gun that comprises a shaped charge holder, two or more shaped charges, slots formed to receive the shaped charges, and an impedance barrier disposed between adjacent shaped charges. The impedance barrier can comprise a g...	05/03/2007
20070095529	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 existing shaped charges, and an oxygen-rich material then is introduced into the producing formation. Thus, oxygen is available within the formation to sustain...	05/03/2007
20060266551	Shaped Charges for Creating Enhanced Perforation Tunnel in a Well Formation A shaped charge includes a charge case; an explosive disposed inside the charge case; and a liner for retaining the explosive in the charge case, wherein the liner comprises a material reactive with a component of an earth formation. A method for perforating in a well i...	11/30/2006
20060185898	Method and apparatus for stimulating wells with propellants The present invention relates to apparatus and methods to stimulate subterranean production and injection wells, such as oil and gas wells, utilizing rocket propellants. Rapid production of high-pressure gas from controlled combustion of a propellant, during initial ign...	08/24/2006
20060108148	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 ener...	05/25/2006
20060102352	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 ener...	05/18/2006
20060027397	Perforating gun connector Controlled Buoyancy Perforating technology for highly deviated and substantially horizontal wellbores may include long perforating guns assembled on a rig floor from a multiplicity of light weight and highly engineered shaped charge carrier joints. Tubular housings for ...	02/09/2006
20060005998	Pipe conveyed explosive with self contained actuation A pipe conveyed charge system, for example a junk shot, having a self-contained activating charge which may be activated by mechanical force applied through the pipe. The initiating charge is pressure actuated, and fluid pressure in the pipe is used to fire the charge. ...	01/12/2006
20050236183	Method and Apparatus for Reducing Pressure in a Perforating Gun An apparatus for reducing the post-detonation pressure of a perforating gun, the apparatus including a perforating gun carrying at least one explosive charge, wherein when the explosive charge is detonated the explosive charge produces a pressurized detonation gas, and ...	10/27/2005
20050189141	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-cavi...	09/01/2005
20050173118	CHARGE HOLDER APPARATUS An adapter is provided for holding and mounting a shaped charge having a non-standard size into a standard loading tube of a hollow carrier gun. The adapter may include a housing assembly having an interior bore to hold a relatively small shaped charge and an exterior s...	08/11/2005
20050139352	Minimal resistance scallop for a well perforating device The present invention is an improvement in the design of a perforating gun to perforate the casing in oil and gas wells. Perforating guns have a cylindrical body member with explosive charges at specified intervals designed to shoot outwardly through the body member, th...	06/30/2005
20050121195	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 using ...	06/09/2005
20050109501	Perforating gun with improved carrier strip A perforating gun includes a plurality of charge containers and an elongate carrier strip. Each charge container may be mounted within a hole in the carrier strip or in a hole in a mounting bracket secured to the carrier strip through substantially continuous contact be...	05/26/2005
20050109509	Propellant ignition assembly and process Method and apparatus for stimulating a subterranean formation that is penetrated by a well bore in fluid communication with the formation. At least one length of propellant is assembled with at least one shaped explosive charge that is aimed axially along the well bore ...	05/26/2005
20050092493	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 mat...	05/05/2005
20050056459	Shaped charge A shaped charge is formed having a pressed polymer pellet positioned between the explosive charge and the metal liner. The shock wave resulting from detonation of the explosive passes through the polymer to the liner. The collapse of the liner results in the formations ...	03/17/2005
20050056426	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 using ...	03/17/2005

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Class 175/4.6 - Concave-shaped charge