Boring With Explosion In Inaccessible Hole Patents (Class 175/2)
  • Patent number: 9476682
    Abstract: Multi-charge munition suitable for defeating a concrete target consists of a detonatable array of hollow primary charges (14) of explosive supported laterally of a line of target penetration on which is disposed a secondary explosive charge (48). Simultaneous detonation of the primary charges in the array causes jet penetrators to be projected together towards the target which produce wide boreholes in concrete suitable for the subsequent emplacement and detonation of the secondary charge. The munition may be an aerially-deliverable bomb or submunition. In one preferred embodiment, the primary charges (14) are positioned in a convergent configuration behind a forwardly-tapered secondary charge (48). Detonation of the primary charges projects penetrators forwardly passed the sides of the secondary charge and thrusts the secondary charge into the borehole produced in the target by the penetrators.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: October 25, 2016
    Assignee: QINETIQ LIMITED
    Inventors: Kevin Mark Powell, Edward Evans
  • Patent number: 9187990
    Abstract: A method for perforating a formation interval in a well is disclosed. The method includes disposing a perforation gun comprising a shaped charge in the well proximate the formation interval, wherein the shaped charge comprises a charge case having a charge cavity, a liner disposed within the charge cavity and an explosive disposed within the charge cavity between the liner and the charge case, wherein the charge case and liner are each formed from a selectively corrodible powder compact material. The method also includes detonating the shaped charge to form a perforation tunnel in the formation interval and deposit a liner residue in the perforation tunnel The method further includes exposing the perforation gun and perforation tunnel to a predetermined wellbore fluid after detonating the shaped charge to remove a liner residue from the perforation tunnel and the charge case from the well.
    Type: Grant
    Filed: September 3, 2011
    Date of Patent: November 17, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Zhiyue Xu
  • Publication number: 20150144399
    Abstract: An energy transfer device (10) is provided that is capable of transferring the energy output from one pyrotechnic device (52) to another device (78) for initiating firing thereof. Device (10) comprises a device housing (12) in which a deformable device insert (14) is received. Device insert (14) comprises a central passageway (34) for transmitting the output from a pyrotechnic device (52), including energy, gasses, and/or solids, to another pyrotechnic device (78). The passageway (34) conducts the pyrotechnic device output to a precise location on the second pyrotechnic device (78) where firing is most effectively initiated. The energy transfer device (10) may be employed as a part of a tool (44) used in well completion operations.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 28, 2015
    Inventors: William Greeley, Raivo Kull, Ed Soohoo
  • Publication number: 20150107819
    Abstract: A downhole tool comprising a first section having an internal sidewall defining at least a portion of a flowpath, and a ported outer sidewall and an explosive having at least a portion within said first section. An annular portion has at least one chamber having an end positioned adjacent to the explosive and an inlet providing a communication path to said flowpath. A detonator assembly is located within each chamber proximal to the explosive such that detonation of the assembly causes detonation of the explosive. A firing pin is propelled toward the detonation assembly by providing communication between the chamber and the flow path, causing a pressure differential between the pressure isolated ends of the firing pin.
    Type: Application
    Filed: July 26, 2013
    Publication date: April 23, 2015
    Inventors: Raymond Hofman, William Sloane Muscroft, Steve Jackson
  • Patent number: 9013322
    Abstract: An apparatus and method for well control and monitoring including an independent web server computer integrated with a pump controller located at each well in an oil field. The well controller locally controls the well pump, processes well and pump data, generates surface and downhole cards, and communicates production reports, recommendations for production improvements, and production statistics to remote sites via the internet. The controller can be queried remotely to provide production reports, etc. Furthermore, the controller can initiate alerts via email, text messaging, or internet messaging, for example, during fault conditions.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: April 21, 2015
    Assignee: Lufkin Industries, LLC
    Inventors: Alan L. Roberson, Doneil M. Dorado, David L. Pinnell, Eric S. Oestreich
  • Publication number: 20150034312
    Abstract: A downhole magnetic latching tool includes at least one permanent magnet deployed on a non-magnetic tool body. A magnetically permeable housing is deployed about the permanent magnet. The magnetic latching tool provides an attractive magnetic force between a drill string and a cased target wellbore.
    Type: Application
    Filed: August 26, 2011
    Publication date: February 5, 2015
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Graham Arthur McElhinney, Charles Henry Duck, JR., Christopher William Lillis
  • Patent number: 8910556
    Abstract: Detonation of a perforating gun is initiated by engagement of the lower distal end of the gun assembly against a bottom hole bore plug. A fluid pressure actuated firing head is initiated by well fluid that is pressurized by a free piston having an integral rod projecting from the distal end of the gun assembly. The piston is displaced against a closed fluid volume when the projecting rod engages the bore plug.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: December 16, 2014
    Inventors: Don Umphries, Gabe Williger
  • Publication number: 20140338894
    Abstract: Detonation control modules and detonation control circuits are provided herein. A trigger input signal can cause a detonation control module to trigger a detonator. A detonation control module can include a timing circuit, a light-producing diode such as a laser diode, an optically triggered diode, and a high-voltage capacitor. The trigger input signal can activate the timing circuit. The timing circuit can control activation of the light-producing diode. Activation of the light-producing diode illuminates and activates the optically triggered diode. The optically triggered diode can be coupled between the high-voltage capacitor and the detonator. Activation of the optically triggered diode causes a power pulse to be released from the high-voltage capacitor that triggers the detonator.
    Type: Application
    Filed: January 14, 2013
    Publication date: November 20, 2014
    Inventors: Jonathan L. Mace, Christopher R. Bradley, Doran R. Greening, David W. Steedman
  • Patent number: 8875787
    Abstract: An electromechanical assembly for a series of guns used in the perforation of petroleum producing wells. Each gun is a cylindrical housing having a charge-carrier loaded with explosive charges in contact with a detonating cord which contacts an electronically activated detonator. The guns are joined by intermediary joints and terminate in a bottom sub on its lower end and a firing head at its upper end. The charge-carrier of each gun is detonated, beginning with the bottommost gun. Insulating end plates are on the lower and upper ends of the carrier for centering and anchoring the charge-carriers. An electrical wire runs from a retractable contact pin in each carrier, through the intermediary joint which has a changeover switch sensitive to the high pressures produced by the explosion in the carrier located in the gun immediately beneath it, rupturing a mechanical fuse and allowing the switch to close.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Tassaroli S.A.
    Inventor: Carlos Jose Tassaroli
  • Publication number: 20140291022
    Abstract: A shaped charge incorporating an amorphous-based material component. The amorphous-based material component may be a liner for the shaped charge to enhance a jet for a perforating application. Other components of the shaped charge and/or perforating gun that accommodates the shaped charge may be of amorphous-based materials. Further, the liner and other components of the shaped charge may be manufactured by way of three dimensional printing. Indeed, a multi-material three dimensional print application may be utilized to form shaped charge components simultaneously along with an entire perforating gun system. Thus, tailored morphology and material gradient characteristics may be readily incorporated into the gun and shaped charge components with a considerable degree of precision.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wenbo Yang, Moises Enrique Smart, Jason Mai
  • Publication number: 20140262503
    Abstract: A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical energy released by firing one or more perforation guns. The mass energy absorber comprises a mass and at least one absorber, and the at least one absorber is disposed between the mass and the perforating gun.
    Type: Application
    Filed: September 19, 2012
    Publication date: September 18, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John P. Rodgers, Marco Serra, Timothy S. Glenn, John D. Burleson
  • Publication number: 20140262502
    Abstract: A wellbore servicing system comprising a controller node disposed within a wellbore, and a tool node configured for movement through the wellbore, wherein the tool node communicates with the controller node via a near field communication (NFC) signal, wherein prior to communication with the controller node, the tool node will not perform at least one function and, after communication with the controller node, the tool node will selectively perform the at least one function.
    Type: Application
    Filed: June 10, 2013
    Publication date: September 18, 2014
    Inventors: Zachary William WALTON, Matthew Todd HOWELL, Michael Linley FRIPP
  • Patent number: 8807213
    Abstract: A perforation gun. The perforation gun comprises a tool body, the tool body defining at least one shouldered hole wherein the shouldered hole comprises a hole through a wall of the tool body and a shoulder that is thinner than the wall of the tool body and at least one perforating explosive charge disposed within the tool body.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: August 19, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jerry L. Walker, Corbin S. Glenn, Bryan D. Powell
  • Publication number: 20140209381
    Abstract: A charge assembly for incorporation into a downhole tool to induce pressure at an interior of the tool during a downhole application. The assembly includes a reactive powder metals that is particularly configured of a reaction rate slower than that of a high energy explosive directed at the application. Thus, upon triggering of the explosive and downhole application in a high pressure well environment, reaction of the powder metals may serve to substantially reduce any pressure differential at the tool. As such, shock related damage due to sudden introduction of pressure differential wave to the tool may be minimized.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hongfa Huang, Brenden M. Grove, Lang Zhan
  • Publication number: 20140184364
    Abstract: Certain aspects and features of the present invention are directed to a supercapacitor device that can be disposed in a wellbore through a fluid-producing formation. The supercapacitor device can include a body that can be disposed in the wellbore, a supercapacitor disposed in the body, at least two terminals disposed at least partially outside the body, and an actuation mechanism. The supercapacitor stores energy. The terminals can be electrically connected with the supercapacitor. An electrical connection between the supercapacitor and the terminals can cause the energy to be discharged from the supercapacitor in response to a conductive material providing an electrical path between the at least two terminals. The actuation mechanism can selectively prevent a deployment of the supercapacitor device in the wellbore from causing a discharge of the energy from the supercapacitor.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 3, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Christopher M. McMillon, Robert M. Neely, Gregory T. Werkheiser
  • Patent number: 8763723
    Abstract: A cartridge for breaking rock which includes a tubular housing in which is formed a first compartment. The cartridge includes a first energetic composition inside the first compartment and a primer which is exposed to the first energetic composition. The cartridge includes a second compartment inside the tubular component and a plunger inside the tubular component which is movable under explosive force towards the primer. The cartridge still further includes a second energetic composition inside the second compartment and an actuator and a fuse for initiating the second energetic composition. The actuator has an area which is smaller than the cross-sectional area of the plunger and is movable, by movement of the plunger, towards the primer, and in that the primer is initiated by the actuator only when liquid fills a volume enclosed at least partly by surfaces of the actuator and of the primer.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: July 1, 2014
    Assignee: Sandvik Mining and Construction RSA (Pty) Ltd
    Inventors: Jarmo Uolevi Leppanen, Manfred Karl Heinrich Habeck
  • Publication number: 20140144702
    Abstract: A perforating gun system comprises at least one charge disposed within a gun body, and a first sleeve disposed within the gun body about the at least one charge. The first sleeve comprises a first expansion section, and the first sleeve is configured to undergo non-uniform expansion in response to the detonation of the at least one charge.
    Type: Application
    Filed: November 27, 2012
    Publication date: May 29, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Jerry L. Walker
  • Publication number: 20140116775
    Abstract: The present invention discloses a wellbore perforating apparatus. The apparatus includes a tubular body and a perforating charge. The tubular body has a wall defining an interior space and an exterior space and the wall has a cavity. In some embodiments, the cavity may be shaped to define a charge socket that receives a perforating charge. The perforating charge is configured in the cavity at a location inside the wall. The perforating charge is configured to discharge toward and into the interior space and penetrate into the exterior space by perforating the wall across the interior space from the location of the perforating charge.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 1, 2014
    Applicant: NINE ENERGY CANADA, INC.
    Inventors: Nathan Brian Coffey, Terry Lee Mytopher
  • Publication number: 20140102788
    Abstract: A perforating assembly includes a material that can respond to a magnetic field by changing shape multiple times and causing a fire control circuit to activate and deactivate. The material may be a magnetic shape-memory alloy and can change shape when the magnetic field is removed or inverted. When the material changes shape, the material can cause another component of the perforating assembly to change position to activate or deactivate the fire control circuit, as desired.
    Type: Application
    Filed: June 18, 2013
    Publication date: April 17, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Pete C. Dagenais, Michael L. Fripp
  • Publication number: 20140083764
    Abstract: Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges.
    Type: Application
    Filed: April 22, 2012
    Publication date: March 27, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Javier Fadul, Paul Herman, Paul Ringgenberg, Randy Moore, Michael Fripp, Dennis Crowdis, John Hales, Bryan Powell
  • Publication number: 20140076631
    Abstract: A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical energy released by firing one or more perforation guns. The mass energy absorber comprises a mass and at least one absorber, and the at least one absorber is disposed between the mass and the perforating gun.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, Marco Serra, Timothy S. Glenn, John D. Burleson
  • Publication number: 20140034384
    Abstract: Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges.
    Type: Application
    Filed: October 7, 2013
    Publication date: February 6, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Javier Fadul, Paul Herman, Paul Ringgenberg, Randy Moore, Michael Fripp, Dennis Crowdis, John Hales, Bryan Powell
  • Publication number: 20140014327
    Abstract: A method of producing reservoir fluids from a condensate gas reservoir traversed by a production well includes the formation of a protrusion into natural gas bearing rock along a producing interval of the reservoir. A heater element is placed into the protrusion and configured for operation. Reservoir fluids are produced from the producing interval while the heater element heats the natural gas bearing rock proximate the heater element. The heat supplied by the heater element reduces condensate build up in the natural gas bearing rock adjacent the production well during production. The heater element is configured to heat the natural gas bearing rock that is proximate the heater element to a temperature that is sufficient to vaporize and/or reduce the viscosity of condensate that is proximate the heater element. A related system is also described.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 16, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: MOHAMMED BADRI, WAEL ABDALLAH, REZA TAHERIAN
  • Publication number: 20140008069
    Abstract: A method and apparatus are presented for actuating a differential pressure firing head to actuate a perforating gun at a downhole location in a subterranean wellbore adjacent a formation. An exemplary method includes positioning the perforating gun and the differential pressure firing head at a downhole location on a tubing string and then communicating an applied fluid pressure to a wellbore annulus, a first chamber which communicates the applied fluid pressure to a low-pressure side of the firing head assembly, and a second fluid chamber which communicates the applied fluid pressure to a high-pressure side of the firing head assembly. The applied fluid pressure is then trapped within the second fluid chamber. When the applied pressure in the annulus is subsequently removed, a pressure differential is created across the firing head by the low pressure in the first chamber and the trapped applied pressure in the second chamber.
    Type: Application
    Filed: April 11, 2012
    Publication date: January 9, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Randall S. Moore
  • Publication number: 20140008057
    Abstract: A downhole device with compressive layer at the surface thereof. Such devices may be particularly well suited for survivability in the face of potentially long term exposure to a downhole environment. Techniques for forming protective compressive layers at the surfaces of such devices may include positioning devices within a chamber for bombardment by high frequency particles. As a manner of enhancing the compressive layer thickness and effectiveness, low temperature conditions may be applied to the device during the high frequency treatment.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Indranil Roy, Manuel P. Marya, Rashmi Bhanulal Bhavsar, Chris Wilkinson
  • Publication number: 20130327571
    Abstract: A shaped charge includes a casing, a liner disposed within an opening of the casing and an explosive disposed between the casing and the liner. The liner is made of a metal powder blend that includes a spheroidized metal powder. The spheroidized metal powder includes a spheroidized tungsten powder. The metal powder blend may further include a binder and a lubricant. The binder includes copper or lead. The lubricant includes graphite.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 12, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Timothy A. Andrzejak
  • Publication number: 20130277108
    Abstract: A energy transfer device (10) is provided that is capable of transferring the energy output from one pyrotechnic device (52) to another device (78) for initiating firing thereof. Device (10) comprises a device housing (12) in which a deformable device insert (14) is received. Device insert (14) comprises a central passageway (34) for transmitting the output from a pyrotechnic device (52), including energy, gasses, and/or solids, to another pyrotechnic device (78). The passageway (34) conducts the pyrotechnic device output to a precise location on the second pyrotechnic device (78) where firing is most effectively initiated. The energy transfer device (10) may be employed as a part of a tool (44) used in well completion operations.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 24, 2013
    Applicant: Fike Corporation
    Inventors: Wililam Greeley, Raivo Kull, Ed Soohoo
  • Publication number: 20130270003
    Abstract: An apparatus and method for perforating a subterranean formation is disclosed. The apparatus includes a tubular carrier; a charge tube disposed in the tubular carrier; and at least one shaped charge mounted in the charge tube which includes a casing, an explosive material and a liner enclosing the explosive material within the casing. An apex portion of the liner has a cross-sectional thickness greater than a cross-sectional thickness of any other portion of the liner. The cross-sectional thickness of the apex portion may be at least fifty percent thicker than a cross-section of a portion adjacent the apex portion. A density of the apex portion may be greater than the density of any other portions of the liner.
    Type: Application
    Filed: June 11, 2013
    Publication date: October 17, 2013
    Applicant: OWEN OIL TOOLS LP
    Inventors: Zeping Wang, Dan Pratt, Paul Noe
  • Patent number: 8538698
    Abstract: Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by successive layers of rock and matching the accumulated rock burden to a target value for a borehole having a length related to the average height of the layers. Another method relates to varying drill pattern parameters and characteristics to match blast design constraints, including the substitution of one explosive material for another by the proper balance of materials and/or output energies to the associated rock burden. Analysis of deviations from target rock burdens and corrective measures are disclosed, as well as cost optimization methods. The various methods can be practiced using an appropriately programmed general purpose computer.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: September 17, 2013
    Assignee: Live Oak Ministries
    Inventor: Jay Howard Heck, Sr.
  • Publication number: 20130206475
    Abstract: The subject disclosure relates to determining an optimum orientation for perforations around the circumference of a subsurface borehole and optimum wellbore fluid initiation pressure for hydraulic fracturing in anisotropic formations.
    Type: Application
    Filed: August 15, 2012
    Publication date: August 15, 2013
    Inventors: Romain Charles Andre Prioul, Florian Karpfinger, George Waters, Brice Lecampion
  • Patent number: 8490686
    Abstract: A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: July 23, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, Marco Serra, Timothy S. Glenn, John D. Burleson
  • Publication number: 20130153295
    Abstract: A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.
    Type: Application
    Filed: October 1, 2012
    Publication date: June 20, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: HALLIBURTON ENERGY SERVICES, INC.
  • Publication number: 20130138254
    Abstract: In at least some embodiments, a system for pump down operations includes a wireline unit and a pump unit. The system also includes a controller coupled to the wireline unit and the pump unit. The controller is to automate at least one control function selected from the group consisting of: a pump rate for the pump unit based on at least one of a monitored wireline speed and a monitored wireline tension for the wireline unit; and a wireline speed for the wireline unit based on at least a monitored pump rate for the pump unit.
    Type: Application
    Filed: August 10, 2010
    Publication date: May 30, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Eddie Seals, Neil Joseph Modeland
  • Publication number: 20130126238
    Abstract: An oil and gas well shaped charge perforator capable of providing an exothermic reaction after detonation is provided, comprising a housing (2), a high explosive (3), and a reactive liner (6) where the high explosive is positioned between the reactive liner and the housing. The reactive liner (6) is produced from a reactive composition which is capable of sustaining an exothermic reaction during the formation of the cutting jet. The composition is a pressed i.e. compacted particulate composition comprising at least two metals, wherein one of the metals is present as spherical particulate, and the other metal is present as a non-spherical particulate. There may also be at least one further metal, which is not capable of an exothermic reaction with the reactive composition, present in an amount greater than 10% w/w of the liner. To aid consolidation a binder may also be added.
    Type: Application
    Filed: July 26, 2011
    Publication date: May 23, 2013
    Applicant: QINETIQ LIMITED
    Inventors: Philip Duncan Church, Robert Peter Claridge, Peter John Gould, Richard Gordon Townsley
  • Publication number: 20130126237
    Abstract: Embodiments of the present invention relate to systems, methods, and apparatus for reliably communicating a detonation signal and perforating oil and/or gas well casings. Particularly, at least one embodiment includes a pass-through bulkhead connection switch that can reliably withstand high operating temperatures and pressures. Such pass-through bulkhead connection switch can be used in perforating gun assemblies and can eliminate or reduce incidents of failed detonations.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 23, 2013
    Applicant: INTERNATIONAL STRATEGIC ALLIANCE, LC
    Inventor: INTERNATIONAL STRATEGIC ALLIANCE, LC
  • Publication number: 20130118805
    Abstract: A system and methodology facilitates creation of perforations along a wellbore. The technique utilizes a perforating gun system having cooperating components, such as a carrier, a loading system, and a plurality of shaped charges. The cooperating components are constructed to break down into multiple smaller pieces upon detonation of the plurality of shaped charges. This allows the perforating gun system to effectively disappear within the wellbore such that any remaining small pieces do not interfere with well flow and/or later interventions.
    Type: Application
    Filed: August 24, 2012
    Publication date: May 16, 2013
    Inventors: Alexander Moody-Stuart, Michael J. Bertoja, Aleksey Barykin
  • Patent number: 8418618
    Abstract: A method of small-charge blasting, a rock drilling unit and a front guide to be used therein. By means of a rock drill machine provided in the rock drilling unit, a hole is first drilled into a material to be excavated and, subsequently, a drilling tool is pulled out of the hole. Next, one or more propellants comprising a propellant charge are fed to the bottom of the hole through a propellant feed channel provided in connection with a feed beam. Then, the hole is sealed and the propellant is ignited, whereupon a high gas pressure is generated, which causes fractioning in the material to be excavated. During the feeding and ignition of the propellant, the rock drill machine is kept in a parallel direction with respect to the hole.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: April 16, 2013
    Assignee: Sandvik Mining & Construction Oy
    Inventors: Erkki Ahola, Veikko Räisänen
  • Patent number: 8408286
    Abstract: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 2, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, John D. Burleson, Marco Serra, Timothy S. Glenn, Edwin A. Eaton
  • Patent number: 8397800
    Abstract: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 19, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, John D. Burleson, Marco Serra, Timothy S. Glenn, Edwin A. Eaton
  • Patent number: 8393393
    Abstract: A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 12, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, Marco Serra, Timothy S. Glenn, John D. Burleson
  • Publication number: 20130056269
    Abstract: A selectively corrodible perforating gun system is disclosed. The perforating gun system includes a shaped charge comprising a charge case having a charge cavity, a liner disposed within the charge cavity and an explosive disposed within the charge cavity between the liner and the charge case, wherein the charge case and liner are each formed from selectively corrodible powder compact material. The perforating gun system also includes a shaped charge housing configured to house the shaped charge.
    Type: Application
    Filed: September 3, 2011
    Publication date: March 7, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Zhiyue Xu
  • Publication number: 20130048376
    Abstract: A perforating gun can include at least one explosive component, and a shock mitigation device including a shock reflector which indirectly reflects a shock wave produced by detonation of the explosive component. Another perforating gun can include a gun housing, at least one explosive component, and a shock mitigation device in the gun housing. The shock mitigation device can include a shock attenuator which attenuates a shock wave produced by detonation of the explosive component. Yet another perforating gun can include a shock mitigation device with an explosive material which produces a shock wave that interacts with another shock wave produced by detonation of an explosive component in a gun housing.
    Type: Application
    Filed: June 26, 2012
    Publication date: February 28, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John P. RODGERS, Timothy S. GLENN, Marco SERRA, Edwin A. EATON, John D. BURLESON, John H. HALES
  • Publication number: 20130043074
    Abstract: Electromechanical assembly for connecting a series of guns used in the perforation of petroleum producing wells. Each gun has a cylindrical housing for a charge-carrier loaded with explosive shaped-charges set in radial fashion. The charges are in contact with a detonating cord that is in contact with an electronically activated detonator. The series of guns are joined firmly by intermediary joints and terminate in a bottom sub on its lower extreme, where the series is initiated by a firing head which is connected to the surface with an electrical connection. It is possible to detonate the charge-carrier of each gun, beginning with the bottommost gun that remains active.
    Type: Application
    Filed: July 23, 2012
    Publication date: February 21, 2013
    Applicant: TASSAROLI S.A.
    Inventor: Carlos Jose TASSAROLI
  • Publication number: 20130014990
    Abstract: 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 apparatus may include a first perforating gun; an activator responsive to the firing of the first perforating gun and a fuse element detonated by the activator; and a second perforating gun that is fired by the fuse element. An illustrative method for perforating a subterranean formation may include forming a perforating gun train using at least a first perforating gun and a second perforating gun; and energetically coupling the first perforating gun and the second perforating gun with an activator.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 17, 2013
    Applicant: Owen Oil Tools LP
    Inventors: John A. Barton, Lyle W. Andrich, Timothy Edward LaGrange
  • Patent number: 8342261
    Abstract: A method for small-charge blasting, and a rock drilling unit used therein. By means of a rock drilling machine of the rock drilling unit, a drill hole is first drilled into material to be excavated, after which one or more cartridges comprising a propellant charge are fed through a drilling tool onto the bottom of the drill hole. The drilling unit comprises a cartridge feed station, which is separate from the rock drilling machine and from which the cartridges may be fed into a longitudinal channel in the drilling tool.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: January 1, 2013
    Assignee: Sandvik Mining & Construction Oy
    Inventors: Erkki Ahola, Veikko Räisänen
  • Publication number: 20120181012
    Abstract: An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics compartment, a tool attachment portion, and a first flow through core. The housing is preferably configured for sliding communication with the well casing. The hermetically sealed electronics compartment secures a processor and a location sensing system, which communicates with the processor while interacting exclusively with features of the well casing to determine the location of the housing within the well casing. A preferred embodiment further includes a well plug affixed to the tool attachment portion, the well plug includes a second flow through core capped with a core plug with a core plug release mechanism, which upon activation provides separation between the second flow through core and the core plug, allowing material to flow through said first and second flow through cores.
    Type: Application
    Filed: March 23, 2012
    Publication date: July 19, 2012
    Applicant: INTELLIGENT TOOLS IP, LLC
    Inventor: Dennis A. Strickland
  • Publication number: 20120152614
    Abstract: A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John P. RODGERS, Marco SERRA, Timothy S. GLENN, John D. BURLESON
  • Publication number: 20120152615
    Abstract: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John P. RODGERS, John D. BURLESON, Marco SERRA, Timothy S. GLENN, Edwin A. EATON
  • Publication number: 20120152616
    Abstract: A bending shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler. A bending compliance of the de-coupler may substantially increase between the connectors. A well system can include a perforating string including at least one perforating gun and multiple bending shock de-couplers, each of the de-couplers having a bending compliance, and at least two of the bending compliances being different from each other. A perforating string can include a bending shock de-coupler interconnected longitudinally between two components of the perforating string. A bending compliance of the bending shock de-coupler may substantially decrease in response to angular displacement of one of the components a predetermined amount relative to the other component.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John P. RODGERS, Timothy S. GLENN, Marco SERRA, Edwin A. EATON, John D. BURLESON
  • Patent number: 8099240
    Abstract: Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by successive layers of rock and matching the accumulated rock burden to a target value for a borehole having a length related to the average height of the layers. Another method relates to varying drill pattern parameters and characteristics to match blast design constraints, including the substitution of one explosive material for another by the proper balance of materials and/or output energies to the associated rock burden. Analysis of deviations from target rock burdens and corrective measures are disclosed, as well as cost optimization methods. The various methods can be practiced using an appropriately programmed general purpose computer.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: January 17, 2012
    Assignee: Live Oak Ministries
    Inventor: Jay Howard Heck, Sr.