Means For Cutting Cable Or Rope Below Ground Patents (Class 166/54.5)
  • Publication number: 20150144354
    Abstract: The present disclosure is directed towards, in general, retrieval tools operable for conveyance within a wellbore extending below a wellsite surface, and methods of using such retrieval tools. One such retrieval tool comprises an annular member operable to receive a conveyance terminating at a downhole tool lodged within the wellbore. The annular member may subsequently receive and engage a portion of the downhole tool. The retrieval tool also comprises a flapper selectively operable to sever the conveyance if the downhole tool cannot be dislodged from the wellbore.
    Type: Application
    Filed: July 2, 2013
    Publication date: May 28, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Larry Victor Cooper, Robert M. Ramsey
  • Publication number: 20150083386
    Abstract: A cable head with cable shear mechanism for attaching to a wireline to support oilfield equipment in a wellbore formed from a housing with a cable bore. The housing comprises a tapered sleeve with a tapered sleeve cable bore, a sliding bell with a sliding bell cable bore, a drive pinch cylinder, a linear biasing mechanism positioned between the tapered sleeve and the drive pinch cylinder, a plurality of shear pins disposed partially into the housing and though the drive pinch cylinder, wherein each shear pin is adapted to withstand from 100 pounds to 2000 pounds of shear load, a pair of slidable cutting segments and a pair of slidable cutting segment guides. When cable load exceeds a preset limit, the shear pins shear allowing the slidable cutting segments to be moved up the slidable cutting segment guides to impact and shear the cable.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicant: G&H Diversified Manufacturing, LP
    Inventors: Joe Noel Wells, Edward Cannoy Kash
  • Patent number: 8899330
    Abstract: A shear pig assembly and method of use for severing a linear conductor within a surrounding tubular. A shear pig assembly includes a main body and a nose that radially surround the linear conductor within the tubular. The main body and nose are axially moveable with respect to each other to cause a shear plug to move radially within a shearing chamber, thereby severing the linear conductor.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: December 2, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: John Gordon Misselbrook
  • Patent number: 8881818
    Abstract: A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 11, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Stephen L. Crow, Marcelle H. Hedrick, Erik V. Nordenstam, Christopher W. Guidry
  • Patent number: 8869896
    Abstract: A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 28, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Stephen L. Crow, Marcelle H. Hedrick, Erik V. Nordenstam, Christopher W. Guidry
  • Patent number: 8863822
    Abstract: A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit toward a well center. The system may also include a control line manipulator assembly for moving the control line toward a tubular and a control line clamp for attaching the control line to the tubular.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 21, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Doyle Fredric Boutwell, Jr., Karsten Heidecke, Kevin Wood, Bernd-Georg Pietras
  • Publication number: 20140299323
    Abstract: A downhole tool mechanism for applying a driving force, such as a cutter tool for cutting a line captured within the tool, comprises a resiliently compressible member for storing a compressive force; a retaining device for maintaining storage of the compressive force until released; a trigger mechanism for releasing the compressive force when the trigger mechanism is activated. In one form the resiliently compressible member comprises a plurality of concentrically arranged spring washers each having a radial slot therein for receiving a line along the length of the resiliently compressible member. In the cutter form, there is a cutter arranged to cut the line when the trigger mechanism is activated, and the trigger mechanism is activated when the tool receives a shock force to one or both ends.
    Type: Application
    Filed: October 26, 2012
    Publication date: October 9, 2014
    Applicant: Peak Well Systems Pty Ltd
    Inventor: David Manson
  • Patent number: 8678088
    Abstract: Apparatuses and methods to cut a control line and/or to run a control line on a rig may include a movable cutting apparatus to cut a control line, a load transfer member to engage a control line, a load measuring device to measure a load imparted to a load transfer member, and a drive member to engage and drive a control line. The apparatuses and methods may be used with a control line positioning apparatus, a pipe engaging apparatus, and/or may be used by themselves.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: March 25, 2014
    Assignee: Frank's Casing Crew and Rental Tools, Inc.
    Inventor: Dougal Hugo Brown
  • Patent number: 8424595
    Abstract: A method and apparatus for releasing a coiled tubing internal line from a bottom hole assembly. The internal line may not have strength sufficient to permit the application of a tension force at the surface to disconnect the internal line from the bottom hole assembly. The bottom hole assembly may include a ball seat adapted to retain a ball permitting the application of a pressure differential above and below the ball seat. An anchor assembly connected to the internal line may be adapted to disconnect from the bottom hole assembly upon the application of predetermined pressure differential. A predetermined pressure differential may be used to shear a portion of the internal line releasing an upper portion of the internal line from the bottom hole assembly.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: April 23, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Manfred Sach
  • Publication number: 20130081823
    Abstract: A valve has a moveable member movable between open and closed configurations and a cutting device arranged to shear against an anvil member when moving between the open and closed configurations and a sealing member providing a seat for seating of the moveable member when the moveable member is in the closed configuration. The anvil member and the sealing member are moveable relative to one another when the moveable member is moving from the open to the closed configuration. During opening and closing the sealing member is displaced away from the cutting device as the cutting device engages the anvil member. The sealing member is pushed away from the moveable member and the anvil to a maximum separation from the movable member at the point on the stroke when the cutting surface of the moveable member is moving past the anvil member.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 4, 2013
    Applicant: National Oilwell Varco UK Limited
    Inventor: National Oilwell Varco UK Limited
  • Patent number: 8376040
    Abstract: A cutting device and a method for emergency cutting of a line in a well are disclosed. The cutting device includes a tapering guide including a narrow end portion and a wide end portion for feed-through of the line, the narrow end portion being placed, when in its position of use, at a lower position than that of the wide end portion; at least one sliding block arranged axially movable within the tapering guide; at least one cutting knife connected to the sliding block and directed inwards in the tapering guide; at least one releasable holding mechanism for standby holding of the at least one sliding block at the wide end portion of the guide, and for releasing the at least one sliding block in connection with emergency cutting of the line. Upon release, the at least one sliding block will move downward in the direction of the narrow end portion of the guide where it will force its at least one cutting knife with increasing force against the line until it is cut off.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: February 19, 2013
    Assignee: Smart Installations AS
    Inventors: Petter Birkeland, Oyvind Koldal
  • Publication number: 20130037269
    Abstract: A method and apparatus for releasing a coiled tubing internal line from a bottom hole assembly. The internal line may not have strength sufficient to permit the application of a tension force at the surface to disconnect the internal line from the bottom hole assembly. The bottom hole assembly may include a ball seat adapted to retain a ball permitting the application of a pressure differential above and below the ball seat. An anchor assembly connected to the internal line may be adapted to disconnect from the bottom hole assembly upon the application of predetermined pressure differential. A predetermined pressure differential may be used to shear a portion of the internal line releasing an upper portion of the internal line from the bottom hole assembly.
    Type: Application
    Filed: October 15, 2012
    Publication date: February 14, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Manfred Sach
  • Publication number: 20130025885
    Abstract: A downhole line tool assembly (200) for use in a wellbore. The downhole line tool assembly (200) includes a downhole power unit (206) having a moveable shaft (240) and a line motivator tool (208) having a drive assembly (246, 247) adapted to contact a line (204) passing through the line motivator tool (200) in the wellbore. The drive assembly (246, 247) is operably associated with the moveable shaft (240) such that rotation of the moveable shaft (240) rotates the drive assembly (246, 247), thereby moving the line (204) relative to the line motivator tool (208).
    Type: Application
    Filed: July 2, 2012
    Publication date: January 31, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Richard Mineo, Jerry Clinton Foster
  • Patent number: 8336612
    Abstract: Methods for severing a tubular string having a cable in association therewith can include lowering a cutting apparatus into the tubular string and actuating the cutting apparatus to form a cut in the tubular string and sever the cable. Severing the cable in this manner can be performed through a single actuation of a single cutting apparatus, enabling at least a portion of the tubular string to be subsequently severed and retrieved, unimpeded by the cable.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 25, 2012
    Assignee: Robertson Intellectual Properties, LLC
    Inventors: Michael C. Robertson, William Boelte
  • Publication number: 20120285684
    Abstract: A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Stephen L. Crow, Marcelle H. Hedrick, Erik V. Nordenstam, Christopher W. Guidry
  • Publication number: 20120211217
    Abstract: A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit toward a well center. The system may also include a control line manipulator assembly for moving the control line toward a tubular and a control line clamp for attaching the control line to the tubular.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 23, 2012
    Inventors: Doyle Frederic Boutwell, JR., Karsten Heidecke, Kevin Wood, Bernd-Georg Pietras
  • Patent number: 8118088
    Abstract: A safety valve system includes a safety valve having an actuator and a line connected to the actuator. The safety valve is operable by opening the line in the well, with the line being free of any connection to a surface control system. Another safety valve system includes multiple safety valves. An actuator of each safety valve is connected to an actuator of another safety valve via a line. A biasing force in each of the actuators is operative to close the respective one of the safety valves in response to opening of the line. The biasing force is produced at least in part by hydrostatic pressure in a well.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: February 21, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Adam D. Wright, Vincent P. Zeller, Harold W. Nivens, Roger L. Schultz
  • Patent number: 8082980
    Abstract: A cutting tool for cutting a wireline, slickline, coiled tubing, or other well access line stuck downhole in a well. The tool includes a host of features including a propulsion mechanism to aid in delivering the tool to a predetermined cut location of the line. In this manner, the risk of unintended uphole cutting of the line may be minimized.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 27, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Peter Gillan
  • Patent number: 8020619
    Abstract: Methods for severing tubing having a cable extending along its length include lowering a first cutting torch into the tubing to a desired location, igniting the first cutting torch, and directing cutting fluids in a circumferential arc to form a first cut in the tubing and sever the cable. A second cutting torch can be lowered and positioned relative to the first cut, and ignited to direct cutting fluids radially to cut the tubing all around the circumference, enabling retrieval of the tubing. The need for precise positioning and alignment of the torches to sever both the cable and tubing is thereby eliminated.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: September 20, 2011
    Assignee: Robertson Intellectual Properties, LLC
    Inventors: Michael C. Robertson, William Boelte
  • Patent number: 7971637
    Abstract: A well surface control system for use with various types of work strings such as, but not limited to, drill strings, coiled tubing, snubbing pipe, electric line, production tubing, and wireline. The system includes a main housing with a main bore extending from one end to the other. The main housing is equipped with a side port which communicates with the main bore between the two ends. The main housing is also equipped with two valves for controlling fluid and/or gas flows through the main bore and for severing a component of a work string running through the main bore. The first valve is positioned between the side port and one end of the main housing and the second valve is positioned between the side port and the other end of the main housing. Attached to each end of the main housing is a saver sub, with means for temporarily locking the saver subs to the main housing to prevent circular and longitudinal movement of the saver subs in relation to the main housing.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: July 5, 2011
    Assignee: Devin International, Inc.
    Inventors: Bryan Lee Duhon, Wayne Ducote
  • Publication number: 20110147008
    Abstract: Apparatuses and methods are disclosed herein to cut a control line and/or to run a control line on a rig. The apparatuses may include a movable cutting apparatus to cut a control line, a load transfer member to engage a control line, a load measuring device to measure a load imparted to a load transfer member, and a drive member to engage and drive a control line. The apparatuses and methods may be used with a control line positioning apparatus, a pipe engaging apparatus, and/or may be used by themselves.
    Type: Application
    Filed: October 19, 2010
    Publication date: June 23, 2011
    Applicant: FRANK'S CASING CREW AND RENTAL TOOLS, INC.
    Inventor: Dougal Hugo Brown
  • Patent number: 7963319
    Abstract: Embodiments of the present invention generally relate to methods and apparatuses for gripping and shearing a downhole cable. In one embodiment, a line cutter mandrel includes: a tubular mandrel; a pocket disposed along an outer surface of the mandrel and longitudinally coupled to the mandrel; a channel disposed through the pocket for receiving a cable; and a line cutter. The line cutter includes a blade, is operable to engage an outer surface of the cable in a gripping position, is operable to at least substantially sever the cable with the blade in a cutting position, and is operable from the gripping position to the cutting position by relative longitudinal movement between the cable and the pocket.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: June 21, 2011
    Assignee: Weatherford/LAMB, Inc.
    Inventors: Guy A. Daigle, John J. Grunbeck
  • Patent number: 7810553
    Abstract: A wireline cutter comprises a primary housing with a first axial bore configured to receive a wireline positioned within a well bore, and a first blade mounted within the primary housing and operable to cut the wireline. A method of cutting a wireline in a well bore comprises running a wireline cutter into the well bore, receiving the wireline within the wireline cutter, and cutting the wireline with the wireline cutter. A one-trip cutting system for use in a well bore comprises a wireline cutter, and a coiled tubing cutter. A method for cutting a coiled tubing with a wireline disposed therein comprises running a system comprising a wireline cutter and a coiled tubing cutter into the well bore, cutting the coiled tubing with the coiled tubing cutter, and cutting the wireline with the wireline cutter, wherein both cutting steps are performed in one trip into the well bore.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 12, 2010
    Assignee: Smith International, Inc.
    Inventors: Brian W. Cruickshank, Benjamin Bianchi, Richard Messa
  • Publication number: 20100181077
    Abstract: A coupling to serve as a logging head or other downhole weakpoint assembly. The coupling is configured with a variety of internal tensile members. The individual members and load bearing capacities of each may be selectively engaged in a variety of combinations so as to provide a host of different load bearing capacities to the weakpoint coupling. Such selectable engagement is achieved through the dialing of a key by the user without the need to add or remove any load bearing features from the coupling. Thus, the user-friendly nature of the coupling is enhanced and the possibility of the user leaving behind supplemental load bearing tensile members for change-out is eliminated.
    Type: Application
    Filed: February 3, 2010
    Publication date: July 22, 2010
    Inventor: L. Michael McKee
  • Publication number: 20100181072
    Abstract: A cutting tool for cutting a wireline, slickline, coiled tubing, or other well access line stuck downhole in a well. The tool includes a host of features including a propulsion mechanism to aid in delivering the tool to a predetermined cut location of the line. In this manner, the risk of unintended uphole cutting of the line may be minimized. Thus, the time and expense of any follow-on fishing operations to remove tools stuck further downhole may be reduced.
    Type: Application
    Filed: January 21, 2009
    Publication date: July 22, 2010
    Inventor: Peter Gillan
  • Publication number: 20100170675
    Abstract: Embodiments of the present invention generally relate to methods and apparatuses for gripping and shearing a downhole cable. In one embodiment, a line cutter mandrel includes: a tubular mandrel; a pocket disposed along an outer surface of the mandrel and longitudinally coupled to the mandrel; a channel disposed through the pocket for receiving a cable; and a line cutter. The line cutter includes a blade, is operable to engage an outer surface of the cable in a gripping position, is operable to at least substantially sever the cable with the blade in a cutting position, and is operable from the gripping position to the cutting position by relative longitudinal movement between the cable and the pocket.
    Type: Application
    Filed: January 8, 2009
    Publication date: July 8, 2010
    Inventors: Guy A. Daigle, John J. Grunbeck
  • Publication number: 20100139921
    Abstract: A cutting device and a method for emergency cutting of a line in a well are disclosed. The cutting device includes a tapering guide including a narrow end portion and a wide end portion for feed-through of the line, the narrow end portion being placed, when in its position of use, at a lower position than that of the wide end portion; at least one sliding block arranged axially movable within the tapering guide; at least one cutting knife connected to the sliding block and directed inwards in the tapering guide; at least one releasable holding mechanism for standby holding of the at least one sliding block at the wide end portion of the guide, and for releasing the at least one sliding block in connection with emergency cutting of the line. Upon release, the at least one sliding block will move downward in the direction of the narrow end portion of the guide where it will force its at least one cutting knife with increasing force against the line until it is cut off.
    Type: Application
    Filed: January 9, 2008
    Publication date: June 10, 2010
    Applicant: SMART INSTALLATIONS AS
    Inventors: Petter Birkeland, Oyvind Koldal
  • Publication number: 20100108331
    Abstract: An embodiment of a clamping, cutting, and wiping assembly assembly may comprise a frame defining a pathway for a cable to pass therethrough, a clamp mechanism, a cutter device, and a wiper mounted to the frame adjacent the pathway for engaging with a cable, wherein the clamp device, the cutter, and the wiper may each be actuatable.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 6, 2010
    Inventors: Robert Michael Ramsey, Matthew E. Wilson
  • Patent number: 7624792
    Abstract: A safety valve system includes a safety valve having an actuator and a line connected to the actuator. The safety valve is operable by opening the line in the well, with the line being free of any connection to a surface control system. Another safety valve system includes multiple safety valves. An actuator of each safety valve is connected to an actuator of another safety valve via a line. A biasing force in each of the actuators is operative to close the respective one of the safety valves in response to opening of the line. The biasing force is produced at least in part by hydrostatic pressure in a well.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: December 1, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Adam D. Wright, Vincent P. Zeller, Harold W. Nivens, Roger L. Schultz
  • Patent number: 7588084
    Abstract: In a method for releasing cables (2) from an attached well tool, where the cutting and the time for cutting can be decided from the surface above the well, and where a cable cutter (6) is arranged between the main part of a cable and a well tool, the cable cutter being controlled by an electronic timer, it is suggested that at least three parameters are used for controlling the cutter, e.g. a pulling force exerted by the cable on the well tool, the pressure in the well location, and time.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: September 15, 2009
    Assignee: Welltec A/S
    Inventor: Jørgen Hallundbæk
  • Publication number: 20080296027
    Abstract: A wireline cutter comprises a primary housing with a first axial bore configured to receive a wireline positioned within a well bore, and a first blade mounted within the primary housing and operable to cut the wireline. A method of cutting a wireline in a well bore comprises running a wireline cutter into the well bore, receiving the wireline within the wireline cutter, and cutting the wireline with the wireline cutter. A one-trip cutting system for use in a well bore comprises a wireline cutter, and a coiled tubing cutter. A method for cutting a coiled tubing with a wireline disposed therein comprises running a system comprising a wireline cutter and a coiled tubing cutter into the well bore, cutting the coiled tubing with the coiled tubing cutter, and cutting the wireline with the wireline cutter, wherein both cutting steps are performed in one trip into the well bore.
    Type: Application
    Filed: August 11, 2008
    Publication date: December 4, 2008
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Brian W. Cruickshank, Benjamin Bianchi, Richard Messa
  • Patent number: 7422055
    Abstract: A wireline cutter comprises a primary housing with a first axial bore configured to receive a wireline positioned within a well bore, and a first blade mounted within the primary housing and operable to cut the wireline. A method of cutting a wireline in a well bore comprises running a wireline cutter into the well bore, receiving the wireline within the wireline cutter, and cutting the wireline with the wireline cutter. A one-trip cutting system for use in a well bore comprises a wireline cutter, and a coiled tubing cutter. A method for cutting a coiled tubing with a wireline disposed therein comprises running a system comprising a wireline cutter and a coiled tubing cutter into the well bore, cutting the coiled tubing with the coiled tubing cutter, and cutting the wireline with the wireline cutter, wherein both cutting steps are performed in one trip into the well bore.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: September 9, 2008
    Assignee: Smith International, Inc.
    Inventors: Brian W. Cruickshank, Benjamin Bianchi, Richard Messa
  • Publication number: 20080196891
    Abstract: A communication tool apparatus is described which is adapted to provide selective communication of control fluid through a downhole device such as a safety valve. The downhole safety valve is a tubing retrievable subsurface safety valve (“TRSSSV”). The communication tool may be run downhole and within the TRSSSV. Once within the TRSSSV, the communication tool apparatus activates a cutting device within the TRSSSV such that communication of control fluid through the TRSSSV is possible. A replacement safety valve run on a wireline may then be inserted into the TRSSSV and be operated via the control fluid line, as a new communication path created by the communication tool described herein. A method of using the communication tool apparatus is also described.
    Type: Application
    Filed: February 13, 2008
    Publication date: August 21, 2008
    Applicant: BJ Service Company
    Inventors: Jason C. Mailand, Bahr A. Glenn
  • Patent number: 7264060
    Abstract: A side entry sub for use with a drill string, where the side entry sub receives a wireline within its inner diameter. The present invention includes a device capable of severing the wireline proximate to the side entry sub. The present invention can further include a capturing device to grapple the severed portion of the wireline to prevent it from being dropped within the wellbore.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: September 4, 2007
    Assignee: Baker Hughes Incorporated
    Inventor: Philip Wills
  • Patent number: 7134374
    Abstract: A safety cable cutter used for cutting a cable used in servicing an oil and gas well. A centrifugal arm roller and a guide roller are mounted on top of a frame. The cable is received on the rollers as the cable is lowered down a well bore. Mounted on ends of the centrifugal arm roller is a centrifugal arm attached to an arm coil spring. The coil spring holds the centrifugal arm next to the end of the roller. Opposite ends of a clamp attached to a cutter bar are slidably received in a pair of cutter bar guides. When the centrifugal arm roller exceeds a certain speed indicating a free fall of the cable, the bias force of the arm coil springs is overcome and the arms move outwardly. Contact ends of the arms engage the opposite ends of the clamp. The clamp and cutter bar are then moved outwardly and the cutter bar cuts the cable.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: November 14, 2006
    Inventors: Alan M. Williamson, Cody Williamson
  • Patent number: 7128155
    Abstract: A cutting device cuts one or more downhole control lines such that the cut ends of the one or more control lines will not interfere with subsequent fishing operations. The cutting device comprises a mandrel, a cutting sleeve and a housing supported on a tubing. Movement of the tubing induces relative motion of the cutting sleeve to cut the one or more control lines.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: October 31, 2006
    Assignee: Schlumberger Technology Corporation
    Inventor: Brian W. Cho
  • Patent number: 7114563
    Abstract: A downhole tool system comprising a side entry sub comprising a side entry adapted to receive a wireline, a cutting sub comprising a cutting apparatus, a cable head adapted to connect a downhole tool to the cutting sub, and a release releasably connecting the wireline to the cable head, the cutting apparatus adapted to cut the wireline. The downhole tool system is conveyed downhole on a pipe string to perform downhole operations. If lodged, the wireline may be released and removed from the downhole tool system such that fishing operations may be performed to retrieve the remaining portions of the downhole tool system. If lodged, the pipe string may also be released or removed from the downhole tool system such that fishing operations may be performed to retrieve the remaining portions of the downhole tool system.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: October 3, 2006
    Inventor: Lawrence C. Rose
  • Patent number: 6805197
    Abstract: A combination tool for attaching to a stuck wireline tool, then cutting the wireline just above the stuck tool with a hydraulically driven cutter, allowing the wireline to be pulled out of the hole before fishing out the stuck tool. A side door can be provided on the work string, to allow rerouting of the wireline outside the work string, after which the stuck tool can be unstuck and repositioned within the well bore for completion of the downhole operation of the tool, prior to cutting the wireline free from the downhole tool.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: October 19, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Kenneth A. Brumley, John P. Davis, Gregory L Hern, David B. Haughton
  • Patent number: 6789627
    Abstract: An apparatus includes a first member, a second member releasably attached to the first member, and a control line shear mechanism disposed proximate an interface between the first member and the second member. The first and second members can each have a longitudinal bore therethrough and can be moveable in an axial direction to release from one another. The control line shear mechanism may comprise a first shear member attached to the first number and a second shear member attached to the second member, wherein the first and second shear members are adapted to cooperatively shear a control line as the first and second members separate. A method includes separating a first member from a second member and, before or during the separating step, cutting a control line proximal to the paint of separation of the first and second members.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: September 14, 2004
    Assignee: Schlumberger Technology Corporation
    Inventor: Dwayne D. Leismer
  • Patent number: 6763753
    Abstract: A combination tool for attaching to a stuck wireline tool, then cutting the wireline just above the stuck tool with a hydraulically driven cutter, allowing the wireline to be pulled out of the hole before fishing out the stuck tool. A side door can be provided on the work string, to allow rerouting of the wireline outside the work string, after which the stuck tool can be unstuck and repositioned within the well bore for completion of the downhole operation of the tool, prior to cutting the wireline free from the downhole tool.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: July 20, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Kenneth A. Brumley, John P. Davis, Gregory L Hern, David B. Haughton
  • Patent number: 6526858
    Abstract: A cable breakaway assembly is adapted for mounting within a stationary component of a communications service network to prevent damage to a feeder cable in the event that an excessive pulling force is applied to a customer cable spliced to the feeder cable. In one embodiment, the cable breakaway assembly comprises a generally symmetric base, at least one cutting blade fixed to the base, and a swing arm rotatably attached to the base and movable between an extended position and a retracted position. The communications cable is secured to the swing arm by a cable clamp and the swing arm is biased in the extended position by a torsion spring. When the excessive force is applied to the customer cable the swing arm rotates to the retracted position, thereby bringing the communications cable into contact with the cutting blade and severing the communications cable. In another embodiment, the base defines a cavity and the swing arm is replaced by a cable block resiliently positioned within the cavity.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: March 4, 2003
    Assignee: Corning Cable Systems LLC
    Inventors: Kelly J. Smith, Kevin L. Strause, Manuel A. Torres
  • Publication number: 20020054972
    Abstract: The present invention describes a hardbanding material and a process for producing a hardbanding material which greatly extends the life of tool joints and sections of steel pipe to which the material is applied. Granules of tungsten carbide are dropped into a melt puddle which is formed when a low carbon chrome based alloy is welded to an outside surface of a drill pipe. The tungsten carbide has a size ranging from about {fraction (25/40)} to about {fraction (40/60)} mesh, with a hardness greater than 3000 HV. Alternatively, the tungsten carbide has a size of {fraction (40/60)} mesh with a hardness of greater than 1700 HV.
    Type: Application
    Filed: October 10, 2001
    Publication date: May 9, 2002
    Inventors: Lloyd Charpentier, Al Siegmund
  • Publication number: 20010035287
    Abstract: A preferably fiber optic line passes into a well interior through a pressure barrier such as a tree or wellhead housing, via a modified horizontal penetrator assembly. The penetrator assembly comprises double poppet valve assemblies arranged to open upon engagement of the penetrator with an interior well component such as a tubing hanger. Retraction of the penetrator closes the poppet valves, sealing the pressure barrier, severing the line and allowing the tubing hanger to be pulled. A replacement line is readily installed through the open poppet valve assemblies.
    Type: Application
    Filed: March 7, 2001
    Publication date: November 1, 2001
    Inventor: Graeme John Collie