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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...
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7610969 |
Perforating methods and devices for high wellbore pressure applications
A carrier tube for use in a wellbore perforating gun has inner and outer layers selected from materials of different, comparative physical properties. The inner layer has a higher compressive...
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7591212 |
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...
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7565927 |
Monitoring an explosive device
An explosive device includes a housing, and at least one of an initiator and an explosive in the housing. The at least one of the initiator and explosive are activatable in response to stimulus...
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7493958 |
Technique and apparatus for multiple zone perforating
A technique that is usable with a well includes running a production string into the well so that the production string extends through a first isolated zone of the well and at least into a second...
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7487833 |
Safety apparatus for perforating system
Safety apparatus is disclosed for providing ballistic train interruption in a perforating system. The safety apparatus comprises a generally tubular shaped housing having first and second ends...
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7469745 |
Apparatus and method to mechanically orient perforating systems in a well
The present invention relates to an apparatus and method for using that apparatus to orient a perforating gun or system to minimize or eliminate the damage which may be caused to exterior control...
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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...
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7441601 |
Perforation gun with integral debris trap apparatus and method of use
An improved perforation gun includes an outer gun barrel, which is used in conjunction with an inner movable charge carrier or an inner movable sleeve to trap virtually all of the debris created by...
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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...
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7409993 |
Weight spacer apparatus
A weight spacer apparatus has a carrier which is tubular in shape and a spacer tube which is also tubular in shape for insertion into the carrier. The weight spacer apparatus also has a plurality...
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7387156 |
Perforating safety system
A perforating safety system. A perforating safety system includes a detonation transfer interrupter with a device which decreases an axial separation between detonation transfer components after...
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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...
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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...
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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...
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7347279 |
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...
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7347278 |
Secure activation of a downhole device
A system includes a well tool for deployment in a well, a controller, and a link coupled between the controller and the well tool. The well tool comprises plural control units, each of the plural...
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7325620 |
Recoverable, reinforced and vibration-damping plug used for cased wells
This invention refers to a recoverable, reinforced and vibration-damping plug for cased wells, said wells being for oil, water, gas or any other similar fluid; said plug may be used for...
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7284612 |
Controlling transient pressure conditions in a wellbore
A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance...
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7278484 |
Techniques and systems associated with perforation and the installation of downhole tools
A technique to install a tool in a well includes running the tool into the well and fixing the tool to the well with a fixing agent without pumping the fixing agent through a central passageway of...
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7258054 |
Continuous explosive charge assembly for use in an elongated cavity
A method and apparatus for placement of continuous pre-split, gel explosive in an elongated borehole or cavity. An anchor is attached to one end of a selected length of continuous gel explosive. A...
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7246659 |
Damping fluid pressure waves in a subterranean well
A system and method of damping fluid pressure waves in a subterranean well. In a described embodiment, pressure waves are damped by positioning a dampener in the well during a perforating...
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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...
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7216708 |
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...
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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...
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7172023 |
Perforating gun assembly and method for enhancing perforation depth
A perforating gun assembly ( 110 ) for creating communication paths for fluid between a formation ( 114 ) and a cased wellbore ( 116 ) includes a housing, a detonator and a detonating cord ( 136 )....
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7159657 |
Shaped charge loading tube for perforating gun
The loading tube comprises cups forming cup cavities for enclosing an explosive charge within each of the cups. The loading tube has ridges and valleys providing longitudinal and lateral strength...
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7152680 |
Slickline power control interface
An apparatus, method, and system for use in operating an electric downhole tool on a non-conductive support line (slickline) by converting a battery voltage to an output voltage suitable for...
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7117956 |
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...
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7114564 |
Method and apparatus for orienting perforating devices
The present invention provides an apparatus and method of orienting perforating gun strings conveyed on a tool string. One embodiment of the present invention provides an orienting weight provided...
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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...
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7044236 |
Shot direction indicating device
One embodiment of the present invention discloses a shot indication device that indicates the orientation of a downhole tool that is inside of a wellbore at a particular time. The shot indication...
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7000699 |
Method and apparatus for orienting perforating devices and confirming their orientation
The present invention provides an apparatus and method of orienting perforating gun strings. One embodiment of the present invention provides an orienting weight provided in a portion of the...
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6991044 |
High-energy combined well perforating device
The invention relates to a perforating device comprising one or more perforating gun ( 1 ) installed in a perforating body ( 9 ), a perforating gun head ( 2 ) in the uppermost end of the...
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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...
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6976392 |
Atomic clock for downhole applications
A system and method for acquiring seismic data are disclosed. The system comprises a controller for causing the generation of a seismic signal, where the controller has a first clock used for...
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6966377 |
Providing a low pressure condition in a wellbore region
An apparatus and method includes positioning a string in a wellbore, the string having a surge chamber. A closure member is provided below the well surface, with the surge chamber defined at least...
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6942033 |
Optimizing charge phasing of a perforating gun
A technique that is usable with a subterranean well includes orienting shaped charges of a perforating gun to extend partially around a longitudinal axis of the gun. The perforating gun is oriented...
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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...
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6901865 |
Primer casing and method of charging a blasthole
Primer casing ( 1 ) comprising sleeve portion ( 5 ) and leading portion ( 5 a ), wherein sleeve portion ( 5 ) includes tabs ( 6 ) to retain primer ( 11 ) and blasthole engagement means ( 2 ), and...
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6896059 |
Components and methods for use with explosives
An apparatus and method is provided to reduce interference resulting from activation of explosive devices. To reduce interference, one or more shock impeding elements are placed proximal one or...
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6877562 |
Oil well perforator
This invention relates to the field of oil wells and in particular to the explosive and other devices that are used to perforate oil well casings and hydrocarbon bearing rocks in order to create...
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6874579 |
Creating an underbalance condition in a wellbore
An apparatus and method of perforating and surging a section of the wellbore includes running a perforating gun into the well on a string having an isolation valve above the perforating gun,...
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6865792 |
Method for making a well perforating gun
The invention relates to a method to make a perforating gun for use in oil and natural gas wells comprising the steps of: obtaining a length of a first tube; cutting scallop holes into the first...
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6851471 |
Perforating gun
A perforating gun assembly useful in hydrocarbon well completion. The gun is assembled in a carrier made from straight walled tubing as a primary structural member with complementary male and...
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6845825 |
Method and apparatus for attaching/detaching drill rod
A control system for a drilling machine is disclosed. The drilling machine includes a rod driver for driving a string of rods into the ground, and for removing the string of rods from the ground....
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6843318 |
Method and system for determining the position and orientation of a device in a well casing
A method and system for activating a device at a particular orientation in a casing are disclosed. The casing has a bias, for example a lower side due to tilt, that defines a default angle in the...
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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...
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6792866 |
Circular shaped charge
A circular shaped charge and methods of manufacture, shipping and assembly. An circular shaped charge is manufactured as two separate charge halves, upper and lower, and a separate continuous liner...
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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...
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