With Position Orienting Or Indicating Patents (Class 175/4.51)
  • Patent number: 9663998
    Abstract: Systems and methods for the down-hole automatic mechanical coupling and alignment of a first sensor module and a second sensor module are provided. A mating element of a first sensor module includes a sheath with a first cam and a shroud surrounding the first cam. A second mating element of a second sensor module includes a second cam complementary to the first cam. Upon mating, the sheath surrounds at least a portion of the second mating element and the first cam seats against the second cam, with a predetermined axial orientation with respect to each other.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: May 30, 2017
    Assignee: Gyrodata, Incorporated
    Inventor: William David Poppe
  • Patent number: 9115572
    Abstract: An externally-oriented internally-corrected perforating gun system and method for accurate perforation in a deviated wellbore is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with an external protuberance member (EPM) and an internal pivot support (IPS). With the EPM oriented to the high side of the wellbore, the center of mass of the GSA positions the GSA at the lower side of the wellbore surface. The IPS is attached to internal gun components such end plate, charge holder tube, detonating cord or charge case. The charges inside the charge holder tube move with the gravitational vector about the IPS and point more accurately in the desired direction for perforating. The external orientation of the EPM along with limited internal swing about the IPS provide for an accurate orientation of the charges that results in efficient and effective perforating through a hydrocarbon formation.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: August 25, 2015
    Assignee: GEODYNAMICS, INC.
    Inventors: John T. Hardesty, Nathan G. Clark, James A. Rollins, David S. Wesson
  • Patent number: 9068449
    Abstract: In stimulating a subterranean zone surrounding a well bore, a perforation trajectory is identified that is transverse to a predicted direction of primary fracture propagation in the subterranean zone. A perforating gun in the well bore is aimed to perforate in the perforation trajectory, and then operated to perforate the well bore in the perforation trajectory. Thereafter, a fracture treatment is performed on the subterranean zone through the perforations.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: June 30, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jim B. Surjaatmadja
  • Patent number: 9008919
    Abstract: A swing control apparatus and a swing control method for a construction machine are provided. The swing control apparatus includes a start position estimation unit, a stop target position calculation unit, and a swing motor position control unit. Even if an operator releases a lever or commands a stop at different times, an upper swing structure of the construction machine (for example, excavator) can be stopped within a predetermined range, and thus the inconvenience caused by an additional driving operation, which is required as the stop position differs according to the time point where the stop command starts, can be solved.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 14, 2015
    Assignee: Volvo Construction Equipment AB
    Inventors: Chun-Han Lee, Jin-Seop Kim
  • Patent number: 8893785
    Abstract: A method of determining an azimuthal orientation of a well tool relative to a line in a well can include connecting at least one acoustic source to the well tool, the acoustic source having a known azimuthal orientation relative to the well tool, and detecting at least one acoustic signal transmitted from the acoustic source to an acoustic sensor, the acoustic sensor having a known azimuthal orientation relative to the line. A system for determining an azimuthal orientation of one or more lines relative to a well tool in a wellbore can include at least one acoustic source having a known azimuthal orientation relative to the well tool, and an optical waveguide connected to a distributed acoustic sensing instrumentation, the waveguide having a known azimuthal orientation relative to the lines, and in which the distributed acoustic sensing instrumentation detects acoustic signals transmitted from the acoustic source to the waveguide.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Neal G. Skinner, Michael L. Fripp
  • Publication number: 20140131097
    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: Application
    Filed: June 14, 2012
    Publication date: May 15, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Jerry L. Walker, Corbin S. Glenn, Bryan D. Powell
  • Patent number: 8684083
    Abstract: A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless of a position of the barrel of the perforating gun. A charge assembly receivable within the barrel includes the charge holding structure and first and second end caps that are rotatably interconnected to the charge holding structure and non-rotatably interconnected to the barrel. As the charge holding structure is always or substantially always designed to maintain a common orientation in relation to the wellbore casing, explosive charges associated with the charge holding structure so as to fire towards particular location on the wellbore casing may always or substantially always perforate such particular locations upon or after the explosive charges have fired.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: April 1, 2014
    Assignee: CCS Leasing and Rental, LLC
    Inventors: Manuel Torres, Darwin Holte
  • Patent number: 8672031
    Abstract: Embodiments of the invention include methods and systems for perforating a well using a wired work string assembly. According to embodiments of the invention, the method includes positioning a wired work string assembly in a wellbore, the work string assembly comprising a plurality of wired pipe communicatively coupled at each joint, a depth correlation tool, and a perforating gun assembly. A depth of the perforating gun assembly is determined from a depth correlation tool positioned within the wellbore, and an electrical signal related to the depth of the perforating gun assembly is transmitted to a surface above the wellbore. Firing of the perforating gun assembly is initiated via a signal transmitted from the surface above the wellbore. An electrical signal from the wellbore is transmitted to the surface to confirming the firing of perforating gun assembly. The system includes various tools for perforating the well using the disclosed methods.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: March 18, 2014
    Assignee: Schlumberger Technology Corporation
    Inventor: Vladimir Vaynshteyn
  • Patent number: 8596378
    Abstract: Perforating assemblies and perforating safety systems capable of being disposed in a wellbore for hydrocarbon fluid production are described. The perforating assemblies can include an isolation device that is capable of preventing a denotation train when the assemblies are in a first orientation and allowing a denotation train when the perforating assemblies are in a second orientation. The isolation device can be automatically reoriented or reconfigured upon a change in the orientation of the perforating assembly.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: December 3, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Justin Lee Mason, John Hales
  • Patent number: 8443886
    Abstract: A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless of a position of the barrel of the perforating gun. A charge assembly receivable within the barrel includes the charge holding structure and first and second end caps that are rotatably interconnected to the charge holding structure and non-rotatably interconnected to the barrel. As the charge holding structure is always or substantially always designed to maintain a common orientation in relation to the wellbore casing, explosive charges associated with the charge holding structure so as to fire towards particular location on the wellbore casing may always or substantially always perforate such particular locations upon or after the explosive charges have fired.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: May 21, 2013
    Assignee: CCS Leasing and Rental, LLC
    Inventors: Manuel Torres, Darwin Holte
  • Publication number: 20130062055
    Abstract: Autonomous units and methods for downhole, multi-zone perforation and fracture stimulation for hydrocarbon production. The autonomous unit may be a perforating gun assembly, a bridge plug assembly, or fracturing plug assembly. The autonomous units are dimensioned and arranged to be deployed within a wellbore without an electric wireline. The autonomous units may be fabricated from a friable material so as to self-destruct upon receiving a signal. The autonomous units include a position locator for sensing the presence of objects along the wellbore and generating depth signals in response. The autonomous units also include an on-board controller for processing the depth signals and for activating an actuatable tool at a zone of interest.
    Type: Application
    Filed: May 26, 2011
    Publication date: March 14, 2013
    Inventors: Randy C. Tolman, Pavlin B. Entchev, Renzo M. Angeles Boza, Dennis H. Petrie, Kevin H. Searles, Abdel Wadood M. El-Rabaa
  • Patent number: 8365814
    Abstract: A perforating system, comprising a perforating gun with shaped charges, and a pre-detonation orientation apparatus and method. The pre-detonation orientation device comprises an orientation device in communication with the firing means of the perforating gun. Detonation of the shaped charges can be contingent upon the perforating gun orientation.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: February 5, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Freeman L. Hill, Tim W. Sampson, John D. Macpherson
  • Publication number: 20120193143
    Abstract: A perforating system, comprising a perforating gun with shaped charges, and a pre-detonation orientation apparatus and method. The pre-detonation orientation device comprises an orientation device in communication with the firing means of the perforating gun. Detonation of the shaped charges can be contingent upon the perforating gun orientation.
    Type: Application
    Filed: September 20, 2007
    Publication date: August 2, 2012
    Inventors: Freeman L. Hill, Tim W. Samnson, John D. Macpherson
  • Patent number: 8186259
    Abstract: A perforating gun gravitational orientation system includes a perforating gun and a swivel device connected to the perforating gun to permit rotation of the perforating gun within casing, and the perforating gun spaced apart from the casing by the swivel device. Another perforating gun gravitational orientation system includes the swivel device having an axis of rotation which is spaced apart from a center of gravity of the perforating gun. Yet another perforating gun gravitational orientation system includes the swivel device having an axis of rotation which is spaced apart from a center axis of the perforating gun.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: May 29, 2012
    Assignee: Halliburton Energy Sevices, Inc.
    Inventors: John D. Burleson, Flint R. George, John H. Hales
  • Patent number: 8181718
    Abstract: A perforating gun gravitational orientation system includes a perforating gun and a swivel device connected to the perforating gun to permit rotation of the perforating gun within casing, and the perforating gun spaced apart from the casing by the swivel device. Another perforating gun gravitational orientation system includes the swivel device having an axis of rotation which is spaced apart from a center of gravity of the perforating gun. Yet another perforating gun gravitational orientation system includes the swivel device having an axis of rotation which is spaced apart from a center axis of the perforating gun.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: May 22, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John D. Burleson, Flint R. George, John H. Hales
  • Patent number: 8127848
    Abstract: A method of perforating a wellbore by forming a perforation that is aligned with a reservoir characteristic, such as direction of maximum stress, lines of constant formation properties, and the formation dip. The wellbore can be perforated using a perforating system employing a shaped charge, a mechanical device, or a high pressure fluid. The perforating system can be aligned by asymmetric weights, a motor, or manipulation from the wellbore surface.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 6, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: William D. Myers, Jr., Randy L. Evans
  • Patent number: 8066083
    Abstract: A perforating apparatus (190) used to perforate a subterranean well. The perforating apparatus (190) includes a generally tubular gun carrier (106) and a charge holder (192) rotatably mounted within the gun carrier (106). At least one shaped charge (102) is mounted in the charge holder (192) and is operable to perforate the well upon detonation. A dynamically adjustable weight system (194) including a plurality malleable weight members (196) is operably associated to the charge holder (192). The dynamically adjustable weight system (194) is operable to adjust the center of gravity (120) of the charge holder (192) such that gravity will cause the charge holder (192) to rotate within the gun carrier (106) to position the at least one shaped charge (102) in a desired circumferential direction relative to the well prior to perforating.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: November 29, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John H. Hales, Allison E. Novak, John D. Burleson
  • Patent number: 8028751
    Abstract: A signature element is attached to a downhole cable or other protected equipment and the signal from a signature position detector is used, at least in part, to control the orientation of a directed perforating device or other directional device. Signal emitting sources can include a radioactive material added to an encapsulating composition of a downhole cable.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: October 4, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: C. Jason Pinto, Stephen R. Thompson, David O. Johnson
  • 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
  • Patent number: 7861778
    Abstract: A pressure orienting swivel arrangement includes a freely rotatable weight assembly to orient to gravity prior to being urged to a fixed position. In the fixed position, a pin adapter is reactably interengagable with the weight assembly to orient the pin adapter to the weight assembly without reorienting the weight assembly from gravity. A method for orienting a downhole tool is also included.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: January 4, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Jeffery Kitzman, Wesley Byrne, Justin Vinson, Marc Samuelson
  • Publication number: 20100230163
    Abstract: A perforating apparatus (100) used to perforate a subterranean well. The perforating apparatus (100) includes a generally tubular gun carrier (106) and a charge holder (104) rotatably mounted within the gun carrier (106). At least one shaped charge (102) is mounted in the charge holder (104) and is operable to perforate the well upon detonation. A dynamically adjustable weight system (124) is operably associated to the charge holder (104). The dynamically adjustable weight system (124) is operable to adjust the center of gravity (120) of the charge holder (104) such that gravity will cause the charge holder (104) to rotate within the gun carrier (106) to position the at least one shaped charge (102) in a desired circumferential direction relative to the well prior to perforating.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: John H. Hales, Allison E. Novak, John D. Burleson
  • Publication number: 20090288879
    Abstract: The present application relates to a downhole perforating system having a cemented-in lower completion including one or more orienting nipples, each orienting nipple having a recess key, and one or more lines or tools carried on the exterior of the lower completion and oriented relative to the recess key. The downhole perforating system also includes a perforating string having one or more blank sections oriented relative to an orienting key that is brought into alignment with the recess key when the perforating string is landed in the orienting nipple. Upon landing, the perforating string can be fired without damaging the lines or tools outside the lower completion.
    Type: Application
    Filed: May 12, 2009
    Publication date: November 26, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Michele Arena
  • Publication number: 20090266549
    Abstract: An assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers comprises a series of expandable packers and integrated perforating gun and sandscreen assemblies mounted on a production tubing such that each integrated perforating gun and sandscreen assembly is located adjacent an oil and/or gas bearing earth layer and at least one expandable packer is located between a pair of adjacent oil and/or gas bearing earth layers, and at least one inflow opening arranged in the wall of the production tubing adjacent to each sandscreen assembly. The integrated perforating gun and sandscreen assemblies are installed in a single run into the well such that uncontrolled fluid and/or sand influx into the well before installation of the sandscreens and expandable packers is avoided.
    Type: Application
    Filed: September 26, 2007
    Publication date: October 29, 2009
    Inventors: Stephen Richard Braithwaite, Johannes Cornelis Maria Van Dongen
  • Publication number: 20090242198
    Abstract: A method of perforating a wellbore by forming a perforation that is aligned with a reservoir characteristic, such as direction of maximum stress, lines of constant formation properties, and the formation dip. The wellbore can be perforated using a perforating system employing a shaped charge, a mechanical device, or a high pressure fluid. The perforating system can be aligned by asymmetric weights, a motor, or manipulation from the wellbore surface.
    Type: Application
    Filed: March 26, 2009
    Publication date: October 1, 2009
    Applicant: Baker Hughes Incorporated
    Inventors: Randy L. Evans, William D. Myers, JR.
  • Patent number: 7469745
    Abstract: 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 conduits, conductors or devices, or to adjacent interior well control lines, conduits or tubing by attaching the perforating system to a device which has a resilient cam or guide which engages a slot formed on the interior of a specially fabricated tubular member attached at a spaced distance from the perforating systems blast and which is so oriented as to permit the attachment of the lines or conduits or devices in the opposite radial direction from the blast of the perforating system.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: December 30, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: David Randolph Smith, Gary O. Harkins
  • Patent number: 7409993
    Abstract: 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 of weight bars which may be inserted into the spacer tube after the spacer tube is inserted into the carrier and which are also removable from the spacer tube. In one embodiment, a weight tray is inserted into the spacer tube for receiving the weight bars, and the weight tray may be fabricated from half-round tubing with a welded plate to cover the diametric opening. In another embodiment, a center plate is attached inside the spacer tube along the length of the spacer tube to divide the spacer tube into first and second compartments.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: August 12, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Chenghua Han, Bennie Gill, Mark C. Duhon, Robert Ferrence, Jerry D. Campbell, Jr., Ronald Lutz
  • Patent number: 7152680
    Abstract: 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 operating the tool. In response to receiving a trigger signal, the output voltage signal is applied to the tool. The tool is controlled by varying the output voltage signal according to a power control sequence. Accordingly, electric tools typically requiring surface intervention by an operator via an electric cable (wireline) may be operated on slickline.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: December 26, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Paul Wilson, Kevin L. Gray, Corey E. Hoffman
  • Patent number: 7114564
    Abstract: 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, the loading tube or the gun housing. An adapter is provided intermediate the tool string that facilitates conveyance of the gun string downhole. Additionally, the adapter enables the gun string to rotate independent of the tool string.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: October 3, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert A. Parrott, David Mills, Cynthia L. Hickson, Jerry D. Campbell
  • Patent number: 7044236
    Abstract: 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 device can also be used to determine the orientation of a perforating gun with shaped charges at the instant the shaped charges are detonated. The shot indication device is comprised of an indicator housing secured within the downhole tool. Formed within the indicator housing is an annulus whose axis is parallel to the axis of the downhole tool. Disposed inside of the annulus is an indicator element that freely moves about the circumference of the annulus.
    Type: Grant
    Filed: December 22, 2001
    Date of Patent: May 16, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Morten Iversen, Kenneth Latveit, Knut Henriksen, Kristian Vargervik, Tim V. Sampson
  • Patent number: 7000699
    Abstract: 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 housing. Additional weight may be provided as separate components and attached to the gun components.
    Type: Grant
    Filed: April 27, 2002
    Date of Patent: February 21, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Wenbo Yang, Alfredo Fayard, Robert A. Parrott, Klaus B. Huber, Jeffrey P. Meisenhelder, A. Glen Edwards, Steven W. Henderson, Joseph B. Edone, Wanchai Ratanasirigulchai, Manuel Gonzalez
  • Patent number: 6942033
    Abstract: 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. In response to this orientation of the perforating gun, the shaped charges are fired. The perforating gun and shaped charges may also be oriented in a deviated well to compensate for the anisotropic permeability of a formation.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: September 13, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: James E. Brooks, Jorge Lopez de Cardenas
  • Patent number: 6843318
    Abstract: 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 casing, for example a point along a wall of the casing where objects will rest due to gravity. The method includes providing a magnetic sensor at a known angle in the device relative to the angle at which a device function occurs. For example, the angle at which a perforating gun perforates the casing is a device function angle. The method further includes lowering the device into the casing. The method further includes determining the offset of the device from the casing at the known angular position from an output of the magnet sensor. The device can then be activated.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: January 18, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Gregory S. Yarbro
  • Patent number: 6758124
    Abstract: A unique phasing pattern is provided that maximizes the effective perforation geometry of a wellbore. The improvement overcomes the problems associated with multi-phase guns of the past that failed to account for the fact that the gun rested on the low side of the casing. In one embodiment of the present invention, the phasing is arranged so that there is a zero phase tunnel formed. The zero phase tunnel is located at approximately the location where the gun rests against the low side of the well. Further, tunnels are formed by shape charges at plus and minus forty-five degrees and at plus and minus ninety degrees. This can also be referred to as a penta-phase. In another embodiment of the invention, charges can also be placed to allow for a plus and minus one hundred and thirty-five degrees pattern in addition to the penta-phase pattern described above. This expanded pattern can also be referred to as a hepta-phase pattern.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: July 6, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James Barker, Jerry Walker
  • Publication number: 20040118607
    Abstract: 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. In response to this orientation of the perforating gun, the shaped charges are fired. The perforating gun and shaped charges may also be oriented in a deviated well to compensate for the anisotropic permeability of a formation.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Inventors: James E. Brooks, Jorge Lopez de Cardenas
  • Patent number: 6684954
    Abstract: A bi-directional explosive transfer subassembly (56) for coupling two explosive tools (52, 54) comprises first (74, 78) and second (76, 80) explosive carrying members that respectively define first (82, 86) and second (84) explosive cavities. A ball end (102) of the first explosive carrying member (74, 78) is slidingly received in a socket (114) of the second explosive carrying member (76, 80) such that the first (74, 78) and second (76, 80) explosive carrying members are rotatable and angularly displaceable relative to one another. A first explosive device (130) is disposed in the first explosive cavity (82, 86) and a second explosive device (132) is disposed in the second explosive cavity (84). The first (130) and second (132) explosive devices are spaced apart such that when one of the explosive devices (130, 132) is initiated, the other of the explosive devices (130, 132) will in turn be initiated.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: February 3, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Flint R. George
  • Patent number: 6679327
    Abstract: One embodiment of the present invention discloses a system and method for orienting perforating guns inside of slanted or deviated wellbores. The invention involves adding a weight inside of the guns to gravitate the gun to a specified orientation. The weight is situated on the outer circumference of the gun tube and within the inner diameter of the gun body. The invention is capable of orienting the gun in any radial position without affecting the shot performance of any of the shaped charges.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: January 20, 2004
    Assignee: Baker Hughes, Inc.
    Inventors: Mark L. Sloan, Erick R. Rantala
  • Patent number: 6672405
    Abstract: A perforating gun assembly for use in perforating multiple intervals of at least one subterranean formation intersected by a cased wellbore and in treating the multiple intervals using a diversion agent, such as ball sealers. In one embodiment, the apparatus of the present invention comprises a perforating assembly having a plurality of select-fire perforating devices interconnected by connector subs, with each of the perforating devices having multiple perforating charges. The apparatus also includes at least one decentralizer, attached to at least one of the perforating devices, which is adapted to eccentrically position the perforating assembly within the cased wellbore so as to create sufficient ball sealer clearance between the perforating assembly and the inner wall of the cased wellbore to permit passage of at least one ball sealer.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: January 6, 2004
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Randy C. Tolman, David A. Kinison, Kris J. Nygaard, William A. Sorem, Timothy J. Hall, Jeffrey R. Bailey
  • Publication number: 20030116353
    Abstract: 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 device can also be used to determine the orientation of a perforating gun with shaped charges at the instant the shaped charges are detonated. The shot indication device is comprised of an indicator housing secured within the downhole tool. Formed within the indicator housing is an annulus whose axis is parallel to the axis of the downhole tool. Disposed inside of the annulus is an indicator element that freely moves about the circumference of the annulus.
    Type: Application
    Filed: December 22, 2001
    Publication date: June 26, 2003
    Applicant: BAKER HUGHES, INCORPORATED
    Inventors: Morten Iversen, Kenneth Latveit, Knut Henriksen, Kristian Vargervik, Tim Sampson
  • Publication number: 20030102162
    Abstract: One embodiment of the present invention discloses a system and method for orienting perforating guns inside of slanted or deviated wellbores. The invention involves adding a weight inside of the guns to gravitate the gun to a specified orientation. The weight is situated on the outer circumference of the gun tube and within the inner diameter of the gun body. The invention is capable of orienting the gun in any radial position without affecting the shot performance of any of the shaped charges.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 5, 2003
    Applicant: BAKER HUGHES, INCORPORATED
    Inventors: Mark L. Sloan, Erick R. Rantala
  • Patent number: 6523449
    Abstract: A technique includes arranging perforating charges of a perforating gun into groups of adjacent perforating charges. Each perforating charge of each group is aligned in a direction associated with the group. The groups are oriented to form a phasing for the perforating gun.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: February 25, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Alfredo Fayard, Haoming Li, Robert A. Parrott
  • Publication number: 20020134585
    Abstract: A shaped charge perforating apparatus (50) for perforating a subterranean well is disclosed. The shaped charge perforating apparatus (50) comprises a support member (62) having a plurality of shaped charge mounting locations each having shaped charge (56) positioned therein. Each of the shaped charges (56) has an initiation end and a discharge end. The initiation end of each shaped charge (56) is coupled to a detonator cord (70). The shaped charges (56) are enclosed in a carrier (52) having a plurality of recesses (54) spaced on an exterior surface thereof and having contoured bottom surfaces (80). Each of the recesses (54) is longitudinally and radially aligned with the discharge end of one of the shaped charges (56).
    Type: Application
    Filed: March 21, 2001
    Publication date: September 26, 2002
    Inventor: Jerry L. Walker
  • Patent number: 6401818
    Abstract: A method and apparatus is described for increasing hydrocarbon production from a production well by determining a bedding plane (permeability anisotropy) of a hydrocarbon bearing formation and using a perforating tool to form in the formation holes having an essentially elliptical or elongated cross-section with the longest axis of said elliptical or elongated cross-section oriented perpendicular to said bedding plane (or in direction of the lowest permeability).
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: June 11, 2002
    Assignee: Schlumberger Technology Corporation
    Inventor: Panos Papanastasiou
  • Patent number: 6386288
    Abstract: A process and apparatus for completing a subterranean well bore in at least one subterranean formation. At least one perforating gun assembly is positioned on the outside of casing in a subterranean well bore. A suitable signal, such as a hydraulic, electric or wave signal, is transported to the perforating gun assembly so as to detonate one or more explosive charges in the perforating gun assembly which are aimed toward the casing. At least one wall in the casing is perforated thereby establishing fluid communication through the wall of the casing. Usually, cement surrounding the casing and a subterranean formation surrounding the casing are also perforated to establish fluid communication between the formation and the interior of the casing.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: May 14, 2002
    Assignee: Marathon Oil Company
    Inventors: Philip M. Snider, Eldon G. Williams, Jr.
  • Patent number: 6378607
    Abstract: A method and system is provided for perforating a casing in a hydrocarbon well so as to avoid perforating in a direction where a cable resides. A mass of metallic material is clamped to the casing at a predetermined offset angle with respect to the cable. The angular position of the metallic mass is detected using a detector placed inside the casing. Then, a perforating gun is oriented based on the detected angular position of the metallic mass and the predetermined offset angle. Finally, the casing is perforated so as to avoid damage to the cable. The cable comprises a number of electrical conductors and is used to communicate with permanent sensors located on the cable in the vicinity of the casing to be perforated.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: April 30, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Sarah Elizabeth Ryan, Ian Raw
  • Patent number: 6298915
    Abstract: A stinger is fabricated with an orientating key. The stinger is lowered into a wellbore and remains atop a downhole assembly. The angular orientation of stinger with respect to the downhole assemble is also adjustable prior to entering the wellbore. The stinger acts as a guide for coupling an alignment skirt. The alignment skirt is fabricated with an alignment slot for receiving the orientation key. The alignment skirt is lowered onto the stinger and, as inclines on the skirt engage the orientation key, the alignment skirt is rotated until the alignment slot receives the orientation key. The alignment skirt and stinger are then fully coupled. The angular orientation of the orientation key can be determined by coupling an alignment skirt to the stinger, where a directional tool is affixed to the alignment skirt and performs a directional survey.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: October 9, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Flint George
  • Patent number: 6283214
    Abstract: The present Invention relates to novel devices and methods to minimize the production of sand in subterranean environments; in particular, in poorly consolidated formations, sand is often co-produced along with the desired fluid (e.g., oil); sand production is undesirable, hence in the present Invention, elliptically shaped perforations of a particular orientation are created in the casing (or directly into the formation in the case of an uncased wellbore) that lines wellbore drilled through the formation, to improve near-wellbore stability of the formation, hence minimizing sand intrusion.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: September 4, 2001
    Assignee: Schlumberger Technology Corp.
    Inventors: Frederic J. Guinot, Simon G. James, Brenden M. Grove, Panos Papanastasiou
  • Patent number: 6173773
    Abstract: A method and apparatus of orienting a tool in a wellbore includes running an orientation string into the wellbore, the orienting string including a positioning device, a measurement device (e.g., a gyroscope), and the tool. The orientation string is positioned in a predetermined interval in the wellbore. The azimuthal orientation of the orientation string is measured with the measurement device. The orientation string is removed from the wellbore, and a tool string is run into the wellbore, the tool string including substantially similar components as the orientation string such that the tool string follows substantially the same path as the orientation string.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: January 16, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: James S. Almaguer, Thomas H. Zimmerman, Jorge E. Lopez de Cardenas