Firing Control Mechanically Actuated In Bore Patents (Class 175/4.56)
  • Patent number: 9157718
    Abstract: An interruption sub for a downhole tool the downhole tool activatable by detonation. The interruption sub includes a barrier movable between a biased closed position and an open position. Preventing ballistic transfer to the downhole tool in the closed position and allowing ballistic transfer to the downhole tool in the open position. A detonation path within the interruption sub, wherein the barrier is hydraulically or electronically movable from the closed position to the open position in response to at least one condition acceptable for ballistic transfer. Also included is a downhole tool activatable by detonation.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: October 13, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Colby Ross
  • Patent number: 9091152
    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: Grant
    Filed: June 11, 2012
    Date of Patent: July 28, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, Timothy S. Glenn, Marco Serra, Edwin A. Eaton, John D. Burleson, John H. Hales
  • Patent number: 8967291
    Abstract: A first end of a conductive spring is embedded in a wall of a large chamber of a piston housing. The spring is held in tension by a second end of the spring being pinned against a bead contact by a trigger pin. The diameter of the piston and a tensile breaking strength of the trigger pin are selected so that the trigger pin is breakable and the tension in the spring is releasable upon the presence of a predetermined pressure difference between a pressure on the contact side of the piston and a pressure on the pinning side of the piston. Release of tension in the spring closes an electrical circuit.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: March 3, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Clovis Satyro Bonavides, Donald Leon Crawford, Paul Anthony Molina, Gabriel Vicencio Mata
  • Patent number: 8950509
    Abstract: 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 assembly can include: one or more casings connected together to form a firing head containment body, the firing head containment body comprising a detonation chamber and actuation chamber; a detonator configured in the detonation chamber; a moveable actuator configured in the actuation chamber and operatively connected to the detonator, wherein the actuator is retained in a first position in the actuation chamber by a retention detent; a coupler operatively connected to the actuator opposite the detonator, wherein the coupler comprises a channel for communicating pressure through the coupler to the actuator that overcomes the retention detent and allows the actuator to move in the actuation chamber to as second position, wherein the detonator activates in dependence upon the actuator moving to the second position.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 10, 2015
    Assignee: Nine Energy Canada Inc.
    Inventors: Nathan Brian Coffey, Terry Lee Mytopher
  • Patent number: 8943943
    Abstract: Explosive carrier end plates for charge-carriers utilized in guns for the perforation of petroleum producing wells. Each gun is mounted coupled vertically with similar guns inside the casing of the well, and each gun is a hollow cylinder in the interior of which there is a corresponding tubular carrier that has multiple peripheral mountings for a radial placement of the shaped-charges. The carrier is mounted in the gun by means of a top insulating end plate that has a retractable electrical spring contact capable of pushing upwards, and a bottom insulating end plate. The end plates have a centering clip for anchoring in a respective window of the cylindrical wall of the carrier. Both end plates have a single removable insert axially fitted between two tubular inserts, which present reciprocal guiding and positioning means for a pin-keyway slot to enable mounting with the end plate.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 3, 2015
    Assignee: Tassaroli S.A.
    Inventor: Carlos Jose Tassaroli
  • Patent number: 8943944
    Abstract: This invention provides a structure for gunpowder charge in multi-frac composite perforation devices that is easy to assemble and transport while the charge volume of gunpowder is increased. In one embodiment of the present invention, an triplet outer gunpowder box is attached onto the outer wall of the charge frame and comprises one middle gunpowder box charged with gunpowder of certain burning rate, and two side-hung gunpowder boxes charged with gunpowder of another burning rate. The two side-hung gunpowder boxes are separately located on the two sides of the middle gunpowder box and are connected with the middle gunpowder box as a unit. The middle gunpowder box is located at a position corresponding to the perforating charge, and has an inner groove for orienting the perforating charge and a through hole through which the jet flow passes.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 3, 2015
    Assignees: Tong Oil Tools Co., Ltd, Tong Petrotech Inc
    Inventors: Guoan Zhang, Jianlong Cheng, Xianhong Sun
  • Patent number: 8899346
    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: Grant
    Filed: June 18, 2013
    Date of Patent: December 2, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Pete C. Dagenais, Michael L. Fripp
  • Patent number: 8763507
    Abstract: An isolation sub for use in a perforating system that includes a pressure activated firing head. The isolation sub is set between the pressure source that is used to initiate the firing head. A pressure regulator in the sub is responsive to fluctuations in pressure difference between the pressure source and wellbore and isolates the firing head when the pressure difference is at or approaches a designated pressure difference that could initiate the firing head. The pressure regulator includes a spring loaded piston that seals the firing head from the source pressure before the pressure difference activates the firing head.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: July 1, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Colby W. Ross
  • Patent number: 8579022
    Abstract: An apparatus for deploying and activating a downhole tool activated by an explosive charge such as a drill pipe cutter or hole puncher. The apparatus includes a sealing member with an external wedge-shaped profile that forms a metal-to-metal partial seal with a profile at the top end of a pipe joint in a drill pipe string. The apparatus includes an impact force absorbing device that maintains a firing rod in a non-actuated position during impact of the apparatus. The apparatus includes a differential pressure piston that actuates at a pre-determined well bore pressure to release the firing rod to activate the downhole tool.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 12, 2013
    Inventors: Robert B. Cook, Glenn M. Walls
  • Patent number: 8517120
    Abstract: A perforation tool e.g. for perforation of a formation, a well or the like downhole by detonation of a charge. The perforation tool has at least one charge and at least one switch for detonation of the charge. The switch has a housing, at least one contact, a shaft having a first end with a fastening member enabling a slidable fastening of the shaft in a predetermined position in relation to the tool and a second end for extending into the housing, and a conductor provided on the shaft enabling an electrical current to be conducted between the contact and the for detonation of a charge when the shaft extends within the housing.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: August 27, 2013
    Assignee: Welltec A/S
    Inventor: Jørgen Hallundbaek
  • Patent number: 8210105
    Abstract: A method for detonation of a plug device in a fluid environment is described, which is in contact with a body, such as an ignition pellet, and it is characterized in that a number of pressure increases are exerted against the plug device, whereby each pressure increase causes a movement of a piston (10) which is radially arranged in a casing (12), which causes the casing (12) to move a fixed distance inward in the plug device with each pressure increase, up until the displacement of the casing (12) causes the piston to be displaced into a cavity (38), and the fluid environment enters the plug device via an inlet. Also described is a plug device which is in contact with a body, such as an ignition pellet, where the plug device is arranged to detonate after a number of pressure increases that are exerted against the plug device.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: July 3, 2012
    Assignee: TCO AS
    Inventor: Stig Ove Bjørgum
  • Patent number: 8079296
    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: Grant
    Filed: February 26, 2009
    Date of Patent: December 20, 2011
    Assignee: Owen Oil Tools LP
    Inventors: John A. Barton, Lyle W. Andrich, Timothy Edward LaGrange
  • Patent number: 8006779
    Abstract: Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: August 30, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Randall S. Moore, John H. Hales
  • Publication number: 20110088946
    Abstract: Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston.
    Type: Application
    Filed: December 27, 2010
    Publication date: April 21, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Randall S. MOORE, John H. HALES
  • Patent number: 7886842
    Abstract: A wellbore servicing apparatus, comprising a first mandrel movable longitudinally along a central axis and rotatable about the central axis, an orienting member configured to selectively interfere with movement of the first mandrel along the central axis, and a second mandrel connected to the first mandrel and configured to rotate about the central axis when the first mandrel rotates about the central axis. A method of orienting a wellbore servicing tool, comprising connecting an orienting tool to the wellbore servicing tool, identifying a predetermined direction, increasing a pressure within the orienting tool, rotating a portion of the orienting tool in response to the increase in pressure within the orienting tool, and rotating the wellbore servicing tool in response to the rotating of the portion of the orienting tool.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: February 15, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Robert Howard, Robert Pipkin, Iosif Hriscu
  • Publication number: 20100206633
    Abstract: Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Randall S. Moore, John H. Hales
  • Patent number: 7770662
    Abstract: 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 a gap formed in the shaped charge holder, where the impedance barrier runs across the shaped charge holder. The impedance barrier can be a void formed on the surface of the shaped charge holder, or can include shock attenuating material therein, such as wood, cork, cotton, polymeric materials, and combinations thereof, to name a few.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: August 10, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: William Harvey, Meir Mayseless, Anna Schwartz, Timothy Sampson, Mark Sloan, Jason McCann, Avigdor Hetz
  • Publication number: 20100108378
    Abstract: A perforation tool e.g. for perforation of a formation, a well or the like downhole by detonation of a charge. The perforation tool has at least one charge and at least one switch for detonation of the charge. The switch has a housing, at least one contact, a shaft having a first end with a fastening member enabling a slidable fastening of the shaft in a predetermined position in relation to the tool and a second end for extending into the housing, and a conductor provided on the shaft enabling an electrical current to be conducted between the contact and the for detonation of a charge when the shaft extends within the housing.
    Type: Application
    Filed: March 19, 2008
    Publication date: May 6, 2010
    Applicant: Welltec a/s
    Inventor: Jørgen Hallundbaek
  • Patent number: 7246659
    Abstract: 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 operation. The dampener may attenuate the pressure waves by absorbing the pressure waves, flowing the pressure waves through viscously damping material, generating complementary pressure waves, changing a material phase, or by a combination of these methods.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: July 24, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael L. Fripp, Adam Wright
  • Patent number: 6918334
    Abstract: 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 material. A central passage extends through the detonating block from the first end to the second end. A detonator is located and restrained in the passage so as to be adjacent to the detonating material. At least one venting passage extends from the central passage to an exterior of the detonating block.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: July 19, 2005
    Inventor: Kevin Trotechaud
  • Patent number: 6779605
    Abstract: 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 activation signal or the energy stream is allowed after the tool has passed below a known pre-determined depth. A preferred safety system includes a first device in fixed relationship with the downhole tool and a second device fixed at the stationary location. The first device permits, after reaching the pre-determined depth, either (a) an initiation signal to reach an initiation device associated with a downhole tool upon or (b) the energy stream to reach a downhole tool. The second device positively engages the first device to provide an indication that the specified depth has been reached.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: August 24, 2004
    Assignee: Owen Oil Tools LP
    Inventor: Cameron Jackson
  • Patent number: 6675896
    Abstract: A detonation transfer subassembly for coupling two detonation activated tools in a work sting such that the work string may be severed between the two detonation activated tools without risk of a detonation. The detonation transfer subassembly comprises first and second explosive carrying members having a detonation transfer member disposed therebetween. The detonation transfer member defines a longitudinal passageway therein. A firing pin is disposed within the longitudinal passageway. The firing pin has a first position proximate the first explosive carrying member and a second position proximate the second explosive carrying member. The firing pin is propellable from the first position to the second position following a detonation within the first explosive carrying member such that the firing pin impacts an explosive disposed within the second explosive carrying member, thereby transferring detonation from the first explosive carrying member to the second explosive carrying member.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: January 13, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Flint R. George
  • Patent number: 6662883
    Abstract: A charge tube assembly for a perforating gun includes a tubular body having opposed ends. Integrally formed engagement members are positioned at each of the opposed ends. Detachable end plates are secured to each of the opposed ends. Each of the end plates has openings engagable with the engagement members.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: December 16, 2003
    Assignee: LRI Oil Tools Inc.
    Inventor: Ralf Bonkowski
  • Publication number: 20020125045
    Abstract: A detonation transfer subassembly for coupling two detonation activated tools in a work sting such that the work string may be severed between the two detonation activated tools without risk of a detonation is disclosed. The detonation transfer subassembly comprises first and second explosive carrying members having a detonation transfer member disposed therebetween. The detonation transfer member defines a longitudinal passageway therein. A firing pin is disposed within the longitudinal passageway. The firing pin has a first position proximate the first explosive carrying member and a second position proximate the second explosive carrying member. The firing pin is propellable from the first position to the second position following a detonation within the first explosive carrying member such that the firing pin impacts an explosive disposed within the second explosive carrying member, thereby transferring detonation from the first explosive carrying member to the second explosive carrying member.
    Type: Application
    Filed: March 8, 2001
    Publication date: September 12, 2002
    Inventor: Flint R. George
  • Patent number: 6220370
    Abstract: A tubing conveyed perforating apparatus is shown which includes a tubular firing section which carries a plurality of explosive charges. The explosive charges are initially aligned with regions of reduced wall area provided in a tubular firing section which initially surrounds the charges. A piston sleeve is mounted on the exterior of the firing section. The piston sleeve has a plurality of apertures which are initially aligned with the regions of reduced wall area in the tubular firing section and thus with the explosive charges. Detonation of the charges causes the piston sleeve to shift so that the piston sleeve apertures are out of alignment with openings formed in the tubular firing section by the detonation of the charges, thereby trapping any resulting debris within the interior of the tubular firing section. Firing of the explosive charges opens upper and lower circulating ports so that sand or other debris can be reverse circulated up the interior of the well string to the well surface.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 24, 2001
    Assignee: Owen Oil Tools, Inc.
    Inventors: David S. Wesson, Gabe Williger, Lyle W. Andrich
  • Patent number: 6213203
    Abstract: A downhole device and method for performing a function in a well. The device has a series of dedicated hydro-mechanical locks that prevent occurrence of an associated function. The hydro-mechanical locks are capable of being released directly by a respective elevated hydraulic activating pressure condition, and are constructed and arranged for sequential operation, such that a successive lock in the series cannot be released until after the hydraulic pressure condition required to release the preceding lock in the series has occurred. In a preferred embodiment, an actuator sequentially releases each lock in a series of locks, subsequently moving an operator to perform a function. A preferred implementation employs a series of resilient rings movable, sequentially, from a locking to an unlocking position, and a common actuator that effects these movements.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: April 10, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: A. Glen Edwards, Klaus B. Huber
  • Patent number: 6179064
    Abstract: A system for use in a subterranean well includes a tubing, a perforating gun, a detonator and circuitry. The detonator is adapted to fire the perforating gun. The circuitry is adapted to determine whether the perforating gun has fired and based on the determination, operate a valve of the tubing to transmit a stimulus to the surface of the well to indicate whether the perforating gun has fired.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: January 30, 2001
    Assignee: Schlumberger Technology Corporation
    Inventor: Vladimir Vaynshteyn