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| Number | Title | Issue Date |
| 7909115 | Method for perforating utilizing a shaped charge in acidizing operations 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 is fabricated from a material soluble with a selected dissolving fluid (e.g., an acid, an acid matrix... | 03/22/2011 |
| 7770662 | 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... | 08/10/2010 |
| 7762351 | Exposed hollow carrier perforation gun and charge holder The perforation gun is comprised of a tubular carrier, a charge holder, a plurality of sealed charges, and a detonating cord. The tubular carrier has a length and a plurality of openings. The charge holder has a length and is comprised of a plurality of mounting loc... | 07/27/2010 |
| 7735578 | Perforating system with shaped charge case having a modified boss A perforating gun having a charge case with a boss element partially circumscribing Optionally the pair of bosses may be included that are substantially symmetric about the axis of the charge case. Forming a shaped charge with such a charge case allows for gun strip... | 06/15/2010 |
| 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 strength, and the outer layer has a higher yield strength. The inner layer... | 11/03/2009 |
| 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 |
| 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 initiation ends of the shaped charges (102). An ... | 04/22/2008 |
| 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 initiation ends of the shaped charges (102). An ... | 04/22/2008 |
| 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 to the perforating device, said firing head having a detonator and a ... | 04/01/2008 |
| 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 interior bore to hold a relatively small shaped charge and an exteri... | 03/25/2008 |
| 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 |
| 7284489 | 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 |
| 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 the tool. The tool may be a perforating gun that includes a casing bo... | 10/09/2007 |
| 7273102 | Remotely actuating a casing conveyed tool A technique that is usable with a subterranean well includes communicating a wireless stimulus downhole in the well and actuating a casing conveyed tool in response to the communication. ... | 09/25/2007 |
| 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 includes two or more layers with an impact strength sufficient to main... | 07/24/2007 |
| 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 perforating gun barrel. The shaped charge can be secured to the spine wit... | 07/03/2007 |
| 7237487 | 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 reinfor... | 07/03/2007 |
| 7228907 | High energy gas fracturing charge device and method of use A high energy gas fracturing device, adapted to be lowered into a well. The device comprises a closed tube made of strong material, sized to fit into the well and having at least one sidewall, which defines a set of openings. A set of closure elements seal the openi... | 06/12/2007 |
| 7228906 | 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 b... | 06/12/2007 |
| 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 producing formation. Thus, oxygen is available within the formation to sus... | 05/15/2007 |
| 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 carrier units may be fabricated from low density metals or composite... | 03/27/2007 |
| 7165614 | 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 shaped charges, and an oxygen-rich material then is introduced into the producing formation. Thus, oxygen is available within the formation to sustain an e... | 01/23/2007 |
| 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 to the loading tube. The loading tube is constructed of a formed mater... | 01/09/2007 |
| 7152676 | 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 the tool. The tool may be a perforating gun that includes a casing bo... | 12/26/2006 |
| 7136849 | Method systems and computer program products for indicating links to external URLs The invention provides a method for indicating that a link on a web page is to an external link previously this was done by the webmaster. The current method carries this out by the client software comparing the domain name of the current document's URL with that of... | 11/14/2006 |
| 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 pressure actuated, and fluid pressure in the pipe is used to fire the char... | 10/10/2006 |
| 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 in a portion of the perforating device, such as the shaped charge, th... | 10/03/2006 |
| 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 opposed initiators initiate a column of explosive material from opposit... | 09/12/2006 |
| 7073589 | System for fracturing wells using supplemental longer-burning propellants A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental prope... | 07/11/2006 |
| 7059407 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 06/13/2006 |
| 7055421 | Well perforating gun A perforating device having a longitudinal axis comprising: a loading tube having an explosive charge; a first layer slidable, non fixedly, and removeably disposed over the loading tube; and at least one outer layer in fixed engagement over the first layer and where... | 06/06/2006 |
| 7013977 | Sealed connectors for automatic gun handling A sealed perforating gun assembly for use with automatic pipe handling equipment on oil and gas drill rigs. An upper sealed connector and a lower sealed connector have sealed threaded connections for mating with ends of a perforating gun. The connectors have externa... | 03/21/2006 |
| 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 perforating device, such as the shaped charge, the loading tube or the gun ... | 02/21/2006 |
| 6994167 | Method and system for cement lining a wellbore The invention describes a method of cement lining a wellbore to enable a fixed sensor internal of the lining to sense characteristics of the external formations surrounding the wellbore using, at the region of the sensor position, a permeability changing device befo... | 02/07/2006 |
| 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 perforating body (9), a perforating gun base (7) i... | 01/31/2006 |
| 6962202 | Casing conveyed well perforating apparatus and method Disclosed is a casing conveyed perforating apparatus and method for externally perforating a wellbore casing. The perforating apparatus is attached to the outside of the casing and is conveyed along with the casing when it is inserted into the wellbore. The perforat... | 11/08/2005 |
| 6957701 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 10/25/2005 |
| 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 in the well to direct the shaped charges away from a water boundary.... | 09/13/2005 |
| 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 specified intervals designed to shoot outwardly through the body member... | 09/13/2005 |
| 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 disposed over the loading tube and at least one outer layer in engagemen... | 08/09/2005 |
