Matches 1 - 44 out of 44


Match Document Document Title
8950509 Firing assembly for a perforating gun  
A firing assembly is configured to be contained in a recess formed in a wall of a tubular string subassembly and operates without blockage of the central core of the casing subassembly. The...
8931389 High voltage explosive assembly for downhole detonations  
A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link...
8844625 Perforating gun spacer  
Perforating gun connectors are provided with a small diameter inner tube to house the detonating cord and an outer load-bearing tube that is ported to be in pressure balance. The inner tube...
8684083 Perforating gun with rotatable charge tube  
A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless...
8443886 Perforating gun with rotatable charge tube  
A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless...
7997353 Through tubing perforating gun  
An apparatus for perforating wells has perforating charges and a means for retaining the perforating charges in a first array The first array has a first maximum cross sectional area; and means...
7721820 Buffer for explosive device  
A buffering device for use in conjunction with a downhole tool string, wherein the tool string includes a ballistics device. The buffering device includes a mandrel attached within a tool string...
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...
6805056 Method and apparatus for removing abandoned tubular members  
A method and apparatus for removing a tubular member (e.g., leg of an abandoned or obsolete fixed platforms in a marine environment) is provided. The apparatus includes a delivery system having a...
6378625 Perforating gun  
A perforating gun includes a guide, a first charge unit, a second charge unit and a linkage. The first and second charge units are coupled to the guide. The second charge unit is capable of being...
6371219 Oilwell perforator having metal loaded polymer matrix molded liner and case  
A shaped charge is provided which includes features enhancing its manufacturability. In a described embodiment, an oilwell perforator is provided which includes a case and a liner, at least one of...
6148916 Apparatus for releasing, then firing perforating guns  
A perforating gun can be conveyed on tubing and fired while disconnected from the tubing. The gun is retained to a running tool at the lower end of the tubing in a locked position. Actuating a...
5662178 Wave strip perforating system  
A perforating gun having an elongated mounting strip and a selected wave or non-linear, zig-zag form as seen in a plan view, with an outer surface diameter sized for convenient insertion and...
5224556 Downhole activated process and apparatus for deep perforation of the formation in a wellbore  
This invention relates to a method and apparatus for perforating the formation in a wellbore wherein the wellbore is established for the production of hydrocarbons. The formation is perforated by...
5095801 Pivot gun having charges which slidingly engage a stationary detonating cord and apparatus for deploying the charges  
A pivot gun through-tubing perforating apparatus, which is adapted to be lowered through a tubing in a borehole, includes a perforating gun section and a deployment head section. The perforating...
4961365 Perforating gun with rotating charges including a mechanical link retaining mechanism  
A perforating gun contains charges which are rotatable between a stored position and a deployed position, the charges being connected to an enclosed carrier tube via a mechanical link retaining...
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...
3865199 Apparatus for perforating sub-sea well bores  
In the representative embodiment of the present invention disclosed herein, a new and improved perforating gun includes a plurality of relatively-short metal strips respectively carrying one or...
3627066 PERFORATOR FOR WATER AND OIL WELLS  
A device for perforating well casings so to increase a water or oil supply from the rock strata formation into the well, the device comprising an elongated billet lowered into the well, the billet...
3542141 WELL COMPLETION APPARATUS  
3498377 WELL COMPLETION METHODS AND APPARATUS  
3461977 CASING PERFORATING AND SCREEN PLUG SETTING DEVICE  
3194159 Well perforating assembly  
3169578 Formation testers  
3116689 Well perforating apparatus and switch  
3107612 Well perforating assembly  
3100443 Shaped charge apparatus  
3071072 Perforating apparatus  
3067679 Well perforating assembly and perforating unit therefor  
3067678 Tilting charge well perforating assembly  
3063372 Apparatus for perforating wells  
3040808 Method and apparatus for perforating oil wells  
2981185 Well perforating apparatus  
2974589 Jet perforators  
2960931 Jet perforating assembly for oil wells  
2947253 Perforator  
2927534 Perforating device and method of perforating wells  
2924173 Well perforator firing means  
2908222 Apparatus for detonating shaped explosive charges  
2906339 Method and apparatus for completing wells  
2883932 Well perforating firing means  
2859697 Well perforating device  
2846948 Oil and gas well perforating methods and apparatus  
2799224 Apparatus for perforating casing  

Matches 1 - 44 out of 44