Matches 1 - 50 out of 189 1 2 3 4 >


Match Document Document Title
8181718 Perforating gun gravitational orientation system  
A perforating gun gravitational orientation system includes a perforating gun and a swivel device connected to the perforating gun to permit rotation of the perforating gun within casing, and the...
8156871 Liner for shaped charges  
A liner for a shaped charge is disclosed which comprises a plurality of portions, where at least one portion is composed of powder materials. In one embodiment, the liner comprises two portions...
8136439 Explosive well tool firing head  
A firing head embodiment of the invention confines a connected capacitance cartridge, explosive detonator, and wireline connection switch within an independent, cylindrical housing tube that is...
8127654 Perforating guns with reduced internal volume  
A perforating device has an elongated tubular housing and a loading device supporting a plurality of shaped charges. The loading device and the shaped charges are located inside the housing. A...
8113119 Surface safe explosive tool  
An explosive tool is disclosed. The explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent...
8079296 Device and methods for firing perforating guns  
A perforating gun train for perforating two or more zones of interest includes two or more gun sets made up of guns, one or more activators, and other associated equipment. An illustrative...
8056632 Downhole initiator for an explosive end device  
A perforating gun that is usable with a well includes at least one perforating charge and a initiator. The initiator includes an explosive ballistic train to the perforating charge(s). The...
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...
7975592 Perforating apparatus, firing assembly, and method  
An apparatus for perforating a casing string including a first module and a second module, each including a gun assembly. The first module is positioned longitudinally adjacent the second module on...
7942098 Loading tube for shaped charges  
A loading tube for use in a perforating gun is disclosed which eliminates the necessity for utilization of plastic jackets to restrain shaped charges. The loading tube comprises a first tubular...
7913603 Device and methods for firing perforating guns  
A perforating gun train for perforating two or more zones of interest includes two or more gun sets made up of guns, detonators, and other associated equipment. In one embodiment, the gun sets are...
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...
7806035 Safety vent device  
A perforating gun system having a relief system for relieving high pressure during unexpected high temperature or situations that may produce rupture of the gun body. The relief system may be...
7762172 Wireless perforating gun  
A loading tube for installation in the body of a perforating gun is disclosed. The loading tube holds a plurality of shaped charges whose detonation is electrically initiated, and the loading tube,...
7762331 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...
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...
7739955 Device adjacent to an explosive charge with at least two liners  
An explosive charge (3) can be equipped with two liners (4, 5) that can be attached to one another. The primary liner (4) is so devised that when choosing a first choice (11) of being able to work...
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...
7712406 Method and device for activation of a detonator  
A method is described for detonation of a blasting charge in a fluid environment and which is placed inside a hollow body, such as in an ignition pellet. The method is characterised in that an...
7661366 Signal conducting detonating cord  
A downhole perforating device includes: a perforating gun having incorporated therein at least two shape charges; an elongated detonating cord incorporated with the perforating gun and extending...
7661367 Radial-linear shaped charge pipe cutter  
A radial-linear shaped charge pipe cutter is constructed with the booster explosive packed intimately into a booster aperture that is bored axially through the charge upper end plate. The cutter...
7624681 Initiator activated by a stimulus  
A detonator assembly for initiating an explosive comprises a power source, an initiator, and a switch coupled between the power source and initiator. The switch has a trigger input responsive to a...
7621342 Method for retaining debris in a perforating apparatus  
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...
7607379 Perforation gun system for sealing perforation holes  
A perforation gun includes an external gun barrel in the interior of which perforators are located which can be ignited via a fuse extending through the gun barrel and which, after ignition, pierce...
7546806 Selectable output well perforator and method for producing variable hole profiles  
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...
7461580 Casing conveyed well perforating apparatus and method  
Disclosed is a casing conveyed perforating system and methods for externally perforating a wellbore and casing. The perforating system is attached to the outside of the casing and is conveyed along...
7431075 Propellant fracturing of wells  
A propellant assembly for fracturing a formation around a well includes a propellant and a detonating cord wrapped around the propellant, the detonating cord to ignite the propellant upon...
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...
7360487 Connector for perforating gun tandem  
A perforating gun connector comprising a first and second section connected together on one end. The two sections of the perforating gun connector that couple together are correspondingly tapered...
7350448 Perforating apparatus, firing assembly, and method  
A firing assembly for activating a perforating device comprising a module having a first chamber and a second chamber. The firing assembly comprises a firing head for transferring ballistic energy...
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...
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...
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...
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...
6941871 Faceted expansion relief 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...
6926096 Method for using a well perforating gun  
The invention relates to a method to use a perforating gun in oil and natural gas wells, comprising: a perforating gun with a loading tube and explosive charge; the gun comprises: a first layer...
6918334 Perforating gun firing head with vented block for holding detonator  
A firing head for a perforating gun includes a detonating block having a first end and a second end, with the second end being structured and arranged so as to be located adjacent to a detonation...
6779605 Downhole tool deployment safety system and methods  
A safety system controls the activation of one or more downhole tools by providing selective transmission of an activation signal or an energy stream. In a preferred embodiment, transmission of the...
6758124 Unique phasings and firing sequences for perforating guns  
A unique phasing pattern is provided that maximizes the effective perforation geometry of a wellbore. The improvement overcomes the problems associated with multi-phase guns of the past that failed...
6658981 Thru-tubing stackable perforating gun system and method for use  
A stackable thru-tubing perforating gun system for use in perforating in a large diameter cased wellbore below a smaller diameter production tubing string. The system comprises a thru-tubing...
6591731 Method and apparatus for penetrating hard materials using a energetic slurry  
A method and apparatus for drilling and penetrating hard materials utilizes a high velocity gun system that fires multiple shots of a projectile and an energetic slurry at the surface of the...
6591911 Multi-directional gun carrier method and apparatus  
A perforating device has a carrier strip (e.g., a linear strip) on which are mounted capsule charges arranged in a desired pattern. The pattern can be a phased pattern, such as a spiral pattern, a...
6557650 Method and apparatus for protecting explosives  
A method and apparatus to protect explosive components used in various tools, such as tools for use in wellbores, includes a component with an adsorptive material. Example tools include perforating...
6523449 Perforating gun  
A technique includes arranging perforating charges of a perforating gun into groups of adjacent perforating charges. Each perforating charge of each group is aligned in a direction associated with...
6467387 Apparatus and method for propelling a data sensing apparatus into a subsurface formation  
An apparatus and method are provided for deploying a data sensing apparatus into a subsurface geologic formation for intermittent or continuously gathering data from the subsurface formation and...
6412388 Safety arming device and method, for perforation guns and similar devices  
Safety arming device for an underground well tool having an explosive charge contained in a housing. The device includes a hollow member for connection at an end of the housing, the member having...
6386296 Method and apparatus of protecting explosives  
A method and apparatus to protect explosive components used in various tools, such as tools for use in wellbores, includes a component with an adsorptive material. Example tools include perforating...
6295912 Positive alignment insert (PAI) with imbedded explosive  
Redundant explosive transfer between two explosive carrier devices is accomplished by inserting into a transfer sub or gun head a non-moveable explosive means for receiving the detonating cord...
6250227 Provisional linking and pyrotechnic separation device for two nonmetallic assemblies  
A provisional linking and pyrotechnic separation device is placed between two assemblies made from nonmetallic materials such as composite materials. Prior to separation, parts belonging to each of...
6244157 Wire carrier perforating gun  
A perforating gun (10, 210, 310, 410) is provided for retaining a plurality of explosive charges (16, 16') in an angular phased array with the discharge ends (16a, 16a') of each succeeding...
Matches 1 - 50 out of 189 1 2 3 4 >