With Jar Means For Releasing Stuck Part Patents (Class 166/178)
  • Patent number: 9719318
    Abstract: The invention is directed to a novel and useful fluid-tight, metal-to-metal, annular seal which can be repeatedly cycled in a high temperature, high pressure environment. More specifically, the invention provides a metal-to-metal, annular, seal on a radially expandable sliding sleeve which moves longitudinally from a reduced ID section of a bore to an enlarged section of the bore. The seal is disengaged at the enlarged bore section resulting in rapid fluid flow and pressure equalization which would destroy many traditional elastomer seals.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: August 1, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Russell S. Haake, Mark Henry Strumpell
  • Patent number: 9689224
    Abstract: A cable-operated jar comprising a releasable coupling is arranged for connection to a piece of downhole equipment, in which a mandrel is connected to a cable comprising a hammer section. The hammer section is arranged to strike, on the release of a mandrel coupling, against a shoulder section in a housing, and the mandrel is pre-tensioned in a releasable position with a spring arrangement. The spring arrangement includes an adjusting mechanism operated by the cable alternately being tensioned and relaxed.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: June 27, 2017
    Assignee: Brilliant Oil Tools AS
    Inventor: Ken Erik Steine
  • Patent number: 9476278
    Abstract: An impact apparatus conveyable in a tool string via conveyance means within a wellbore. The impact apparatus comprises a first portion, including a first interface coupled with a first tool string component, a first engagement feature, and a first impact feature. The impact apparatus also comprises a second portion, including a second interface coupled with a second tool string apparatus, a second engagement feature in selectable engagement with the first engagement feature, and a second impact feature positioned to impact the first impact feature in response to disengagement of the first and second engagement features and a tensile force applied across the tool string by the conveyance means. A release member positionable between first and second positions in response to a signal carried by the conveyance means prevents disengagement of the first and second engaging features when in the first position but not the second position.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: October 25, 2016
    Assignee: Impact Selector International, LLC
    Inventor: Jason Allen Hradecky
  • Patent number: 9428980
    Abstract: A jar comprises a housing including an anvil. In addition, the jar comprises a mandrel telescopically disposed within the housing and including a hammer. Further, the jar comprises an annular chamber radially positioned between the mandrel and the housing. Still further, the jar comprises an actuation assembly disposed in the annular chamber. The actuation assembly includes a first collet disposed about the mandrel, a first trigger sleeve disposed about the first collet and adapted to releasably engage the first collet, and a first biasing member adapted to exert an axial force on the mandrel. Moreover, the jar comprises a lock assembly disposed in the annular chamber. The lock assembly includes a second collet disposed about the mandrel, a second trigger sleeve disposed about the second collet and adapted to releasably engage the second collet, and a second biasing member adapted to exert an axial force on the mandrel.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: August 30, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Robert W. Evans
  • Patent number: 9388652
    Abstract: A hydraulic jar having multiple high pressure chambers includes a jar body comprising an inner body telescopically engaged by an outer body. There is a first contact surface carried by the inner body, and a second contact surface carried by the outer body that engage when the jar body is moved to the jarring position. A plurality of axially spaced pressure chambers are spaced axially along the jar body, with each pressure chamber having a hydraulic delay section and a jarring section. A piston separates the pressure chamber. A hydraulic delay is in fluid communication with a high pressure section and a low pressure section of each pressure chamber and permits movement of the piston toward the second end at a first speed. A jarring valve permits movement of the piston toward the second end at a second speed that is greater than the first speed when in a japing section.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: July 12, 2016
    Assignee: Wenzel Downhole Tools Ltd.
    Inventor: Orren Johnson
  • Patent number: 9388651
    Abstract: An impact apparatus conveyable in a tool string within a wellbore comprises a mandrel, a first impact feature, and a latch pin retainer encircling an end of the mandrel. A release sleeve encircles a portion of the latch pin retainer and includes a radial recess. Latch pins retained by the latch pin retainer are slidable into and out of the radial recess, and prevent disengagement of the mandrel end from the latch pin retainer when not extending into the radial recess. A release member electromagnetically causes relative translation of the latch pin retainer and the release sleeve, including aligning the latch pins with the radial recess and thereby permitting the disengagement. A second impact feature is positioned to impact the first impact feature in response to the disengagement when the impact apparatus is under tension.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: July 12, 2016
    Assignee: Impact Selector International, LLC
    Inventor: Jason Allen Hradecky
  • Publication number: 20150129220
    Abstract: An apparatus configured to impart a force on a downhole component, having a piston configured to expand from a movement of a drilling fluid in a downhole environment, a weight configured to move from a first position to a second position, wherein the weight contacts the piston and the piston is configured to move the weight from the first position to the second position when the piston expands from movement of the drilling fluid, a spring configured to contact a bearing surface and the weight, wherein movement of the weight toward the second position compresses the spring, a return spring configured to impart a force on the weight to return the weight to the first position from the second position and a trigger mechanism configured to actuate a return of the weight from the second position to the first position by the return spring.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 14, 2015
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: NATHAN LANDSIEDEL
  • Publication number: 20150114643
    Abstract: A jar assembly for use downhole includes a housing, a piston assembly slidable within and selectively coupled to the housing, a mandrel assembly coupled on a lower end of the piston assembly, and an anvil coupled to an end of the mandrel assembly opposite the piston assembly. The jar assembly is deployed in a wellbore by a conveyance means that couples with the housing. A hydraulic circuit in the piston assembly activates a latch for decoupling the piston assembly from the housing; when decoupled, the housing slides downward and impacts the anvil to generate a jarring force. The jar assembly is re-cocked by raising it with the conveyance means.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 30, 2015
    Inventor: Keith McNeilly
  • Patent number: 8950477
    Abstract: The present invention relates to hydraulic jars which include a jar body; a spindle axially movable within the jar body and coupled to the jar body by means of a helical splined coupling; the spindle being connectable to a pipe string and the stuck object; a cylinder concentrically placed within the jar body with a radial gap, and having chambers for filling with a work fluid, the chambers being separated by a piston and fluidly connected by a channel, wherein the channel is provided by a back valve. The piston is axially movable within the cylinder, and is connectable to the spindle by means of a tractive rod, and to the body by means of a compensative rod. The piston is further provided with elastic split compression rings having initial gaps equal or close to zero.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: February 10, 2015
    Assignee: Scientific and production enterprise Limited liability company BURINTEKH (BURINTEKH ltd)
    Inventors: Yunir Gafurovich Vagapov, Gniyatulla Garifullovich Ishbaev, Samat Yunirovich Vagapov
  • Patent number: 8936076
    Abstract: A vibratory tool for use in a tubular string to prevent sticking or to release a stuck string features a fluid operated dart valve working in conjunction with an impact sleeve to deliver continuous axial jarring blows in opposed directions as long as flow is maintained. Movement of one of those components axially in opposed directions opens and closes access to opposed lateral ports so that a lateral vibration is also established as flow cyclically occurs and stops sequentially at opposed lateral outlets.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: January 20, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Richard Yingqing Xu, Steve Rosenblatt
  • Patent number: 8851191
    Abstract: A method for unseating a threaded connection of wellbore tubing within the wellbore. The method utilizes a back-off tool which consists of a tubular metal housing, a shaped charge and HNS detonating cord within the housing, and an explosive material attached to the housing. The back-off tool is detonated near the threaded connection, creating a shockwave that strikes the threaded connection with sufficient force to unseat the connection.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: October 7, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Nauman H. Mhaskar, William B. Harvey
  • Patent number: 8813844
    Abstract: A drilling system for drilling a lateral borehole from a main borehole comprises a tubular conduit through which a fluid can be pumped, and a drilling assembly connected to the tubular conduit so as to receive fluid pumped therethrough. The drilling assembly comprises a power conversion unit, through which the fluid flows and which operates to provide a downhole power output; a drilling unit including a drilling apparatus powered by the output of the power conversion unit and operable to drill a lateral borehole into the formation surrounding the main borehole, and a liner unit for storing one or more liners for installation into the lateral borehole; and an anchor unit operable to anchor the drilling assembly in the main borehole when the drilling unit operates to drill the lateral borehole.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: August 26, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Christopher Hopkins, Niina Nobuyoshi, Stephen Bonner
  • Patent number: 8789598
    Abstract: Disclosed are embodiments of an adjustable jar and accelerator system and methods of use thereof. One exemplary jarring system includes a jar having a first processor configured to determine a release point of the jar, an accelerator operatively coupled to the jar and having a second processor communicably coupled to the first processor via a communication line, the second processor being configured to determine a spring rate and stroke of the accelerator, and an impact recording device operatively coupled to the jar and having a third processor communicably coupled to one or both of the first and second processors.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: July 29, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Matthew Craig Mlcak, Jack Gammill Clemens
  • Patent number: 8783354
    Abstract: Apparatus and method for adjusting spring preloading in a downhole tool. In an apparatus, a mechanism includes a nut and a piston. The nut is configured to axially compress a spring in the downhole tool. The piston is coupled to the nut. Extension of the piston causes the nut to rotate and compress the spring. The nut is configured to maintain compression of the spring after the piston retracts.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 22, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Mark Sheehan, Jonathan Prill, Jeffery Clausen
  • Patent number: 8783353
    Abstract: A downhole jarring tool includes a mandrel having a small diameter portion and a large diameter portion, a detent cylinder sealingly disposed around the mandrel forming an enclosure, a divider disposed in the enclosure between the mandrel and the detent cylinder, wherein the divider partitions the enclosure into a storage chamber and a metering chamber, and a metering system disposed around the mandrel. A method of applying an impact force using a downhole jarring tool includes moving a mandrel with respect to a detent cylinder by applying an axial force, positioning the mandrel such that a metering system disposed on the mandrel enters a reduced diameter portion of the detent cylinder, transmitting energy to an energy storing component disposed inside the detent cylinder, metering a fluid through the metering system, and accelerating the mandrel with respect to the detent cylinder.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 22, 2014
    Assignee: Smith International, Inc.
    Inventors: Vishal Saheta, Arley G. Lee
  • Publication number: 20140196911
    Abstract: An impact apparatus conveyable in a tool string within a wellbore comprises a mandrel, a first impact feature, and a latch pin retainer encircling an end of the mandrel. A release sleeve encircles a portion of the latch pin retainer and includes a radial recess. Latch pins retained by the latch pin retainer are slidable into and out of the radial recess, and prevent disengagement of the mandrel end from the latch pin retainer when not extending into the radial recess. A release member electromagnetically causes relative translation of the latch pin retainer and the release sleeve, including aligning the latch pins with the radial recess and thereby permitting the disengagement. A second impact feature is positioned to impact the first impact feature in response to the disengagement when the impact apparatus is under tension.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 17, 2014
    Applicant: Impact Selector, Inc.
    Inventor: Jason Allen Hradecky
  • Patent number: 8695696
    Abstract: A jar comprises an outer housing; an inner mandrel within the outer housing to define a fluid chamber; a valve disposed within the fluid chamber with a restriction surface facing, during setting, a cooperating restriction surface on the outer housing and a pressure surface facing the inner mandrel, the valve movable between a seated position and an unseated position; the cooperating restriction surface cooperating with the restriction surface to set the jar for a jar in a first direction; the pressure surface being exposed to fluid within the fluid chamber when the jar is set and pressuring up for a jar in the first direction; the pressure surface being indented to cause uneven radial movement, in a plane perpendicular to a jar axis, of the restriction surface towards the cooperating restriction surface when the jar is set and pressuring up for a jar in the first direction; and jarring surfaces.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: April 15, 2014
    Assignee: Lee Oilfield Services Ltd.
    Inventors: Michael Shoyhetman, David Budney, Craig Budney, Glenn Budney
  • Patent number: 8657007
    Abstract: A hydraulic jar for delivering impacts downhole. The jarring mechanism includes a cup-type piston that moves through a seal bore. The cup is deformable in response to fluid pressure so that it expands each time it moves through the seal bore to compensate for wear on the lip. Since only minimum interference is required between the piston and seal bore, less material may be used. This reduces the force required to reset the tool, which is particularly advantageous in horizontal wells. The seal bore may be slightly wider at the exit; the cup expands to this exit diameter, ensuring an interference fit as the cup travels back through the smaller diameter entry section. The entry end of the seal bore may include longitudinal grooves. This prevents the piston cup from rupturing by preventing a fluid seal around the lip until the most of cup is inside the seal bore.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: February 25, 2014
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Brock W. Watson, Roger L. Schultz
  • Publication number: 20140014321
    Abstract: A downhole transport assembly (100, 101) having first and second members (10, 20) having a common longitudinal axis, at least one of the members (10, 20) being rotatable about the longitudinal axis and movable along the longitudinal axis relative to the other member, the rotatable member having at least one engaging member (60), the or each engaging member (60) being configured and/or disposed on the rotatable member so that rotation of the rotatable member about the longitudinal axis causes the first and second members (10, 20) to move with respect to each other in opposite directions along the longitudinal axis.
    Type: Application
    Filed: March 2, 2012
    Publication date: January 16, 2014
    Inventor: Graeme McNay
  • Publication number: 20130277057
    Abstract: A jar comprises a housing including an anvil. In addition, the jar comprises a mandrel telescopically disposed within the housing and including a hammer. Further, the jar comprises an annular chamber radially positioned between the mandrel and the housing. Still further, the jar comprises an actuation assembly disposed in the annular chamber. The actuation assembly includes a first collet disposed about the mandrel, a first trigger sleeve disposed about the first collet and adapted to releasably engage the first collet, and a first biasing member adapted to exert an axial force on the mandrel. Moreover, the jar comprises a lock assembly disposed in the annular chamber. The lock assembly includes a second collet disposed about the mandrel, a second trigger sleeve disposed about the second collet and adapted to releasably engage the second collet, and a second biasing member adapted to exert an axial force on the mandrel.
    Type: Application
    Filed: December 30, 2010
    Publication date: October 24, 2013
    Applicant: Halliburton Energy Serivces. Inc.
    Inventor: Robert W. Evans
  • Patent number: 8561688
    Abstract: This invention relates to a jar used to dislodge tools stuck in a well. The jar includes two housing portions movable with respect to each other. A release collet forms a portion of one of the housings. A release sleeve is carried by a mandrel and is located within the release collet. After a given amount of movement of the housing with respect to the mandrel, the release mechanism is activated and the two housing sections rapidly move with respect to each other. A hammer portion of the mandrel then strikes an anvil in the anvil housing, thus applying an upward force to the tool lodged in the well.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 22, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Robert W. Evans
  • Patent number: 8550155
    Abstract: A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used to cycle the jar without reciprocating the well conduit at the wellhead. The tool includes a hydraulic reset assembly. The hydraulic chamber is in fluid communication with the flow path through the tool. Thus, when the internal fluid pressure inside the tool exceeds the external pressure in the well, the fluid pressure drives the piston in the hydraulic chamber to urge the tool toward the contracted position. In this way, the reset assembly can overcome the tendency of fluid pressure to extend the tool. The reset assembly can be configured to balance or equalize the extension pressure, to prevent undesired cocking of the tool, or to overcome the extension pressure to contract the tool for recocking the jar mechanism.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: October 8, 2013
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Roger L. Schultz, Andrew M. Ferguson, Michael L. Connell
  • Patent number: 8505653
    Abstract: A double-acting compounder comprises: an outer housing; an inner mandrel disposed telescopically within the outer housing to define a fluid chamber; an equalizer, such as an equalizer piston, between the fluid chamber and an exterior of the outer housing for equalizing pressure; a movable seal assembly within the fluid chamber with a first end defining an end of the fluid chamber; the inner mandrel having an outer shoulder for moving the movable seal assembly with the inner mandrel when the inner mandrel moves in a first direction relative to the outer housing to compresses fluid within the fluid chamber; and the outer housing having an inner shoulder for preventing the movable seal assembly from moving with the inner mandrel when the inner mandrel moves in a second direction relative to the outer housing to compresses fluid within the fluid chamber.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 13, 2013
    Assignee: Lee Oilfield Service Ltd.
    Inventors: Michael Shoyhetman, David Budney, Craig Budney, Glenn Budney
  • Patent number: 8499836
    Abstract: A method of using jarring tool in a wellbore, where the jarring tool is electrically activated to apply an impact force transmitted to at least another tool in the well. The method may further comprise operating a hydraulic mechanism in response to electrical activation of the jarring tool to cause a first member of the jarring tool to be moved to collide with a second member of the jarring tool to apply the impact force. Also, the method may involve electrically activating the jarring tool by communicating at least one command over at least one electrical conductor to the jarring tool.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: August 6, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Keith A. Moriarty, Reinhart Ciglenec
  • Publication number: 20130168092
    Abstract: A downhole assembly, including a downhole tool, a downhole force-creating device, and a shock damper. The shock damper includes a hollow housing including an annular shoulder near each end and extending radially inward from the housing. The damper also includes a mandrel located at least partially inside the housing to form an annulus between the mandrel and the housing, the mandrel including an annular shoulder near each end and extending radially outward from the mandrel. A spring is located in an annular cavity formed by the annulus and between both the housing shoulders and the mandrel shoulders. The mandrel is movable relative to the housing to an expanded position in one direction and to a compressed position in the other direction.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Robert W. EVANS
  • Patent number: 8453727
    Abstract: A jarring device includes an outer housing which defines an axial flow path therethrough. An impact rotator is retained within the housing and is rotatable therewithin between a first rotational position and a second rotational position to create a jarring impact. A torsional spring biases the impact rotator toward the first rotational position. Fluid flow through the housing rotates the impact rotator from the first to the second rotational position.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: June 4, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Richard Yingqing Xu
  • Patent number: 8418758
    Abstract: A jarring tool is disclosed. The tool has a segment of sub housing containing an upper stop proximate a first end thereof. An outer latch piece is connected to an upper end of the lower shaft inside the sub housing, and an upper shaft passes through the stop and connects on a first end thereof to an inner latch piece. A cap is on a second end of the upper shaft retaining a washer stack against the upper stop. A retainer is inside the sub housing and has an first piece providing a restraining region and an open region and a second piece attached to the sub housing. The retainer retains the inner and outer latch pieces in a latched position in the restraining region until the latch pieces are displaced toward the second end of the sub housing through the retainer to the open region as a result of a tensile force on the outer latch piece.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: April 16, 2013
    Assignee: Impact Selector, Inc.
    Inventor: Jason A. Hradecky
  • Patent number: 8408286
    Abstract: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 2, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, John D. Burleson, Marco Serra, Timothy S. Glenn, Edwin A. Eaton
  • Patent number: 8397800
    Abstract: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 19, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John P. Rodgers, John D. Burleson, Marco Serra, Timothy S. Glenn, Edwin A. Eaton
  • Publication number: 20130062052
    Abstract: Embodiments disclosed herein relate to a jar including the following: a mandrel; an outer housing slidably disposed about the mandrel; a ball stop housing disposed below the outer housing; a lower sub disposed below the ball stop housing; and a ball stop assembly disposed in the ball stop housing. The ball stop assembly includes a ball stop pivotally disposed in the ball stop assembly.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 14, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Vishal Saheta, Richard David Peer, Brian Mohon
  • Patent number: 8365826
    Abstract: A hydraulically powered fishing tool is provided for retrieving another tool or tubular stuck in a well. A tool housing is supported in a well on a work string, and the housing encloses a plurality of pistons (16, 28, 34) each movable in response to pressurized fluid transmitted through the work string. An anchor (52) axially fixes the position of the tool in the well, and a tool mandrel (40) is axially movable relative to tool housing when the anchor is set. A fishing device (82) engages the another tool or tubular, so that axial movement of the mandrel in response to the plurality of pistons dislodges the stuck tool or tubular.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: February 5, 2013
    Assignee: TIW Corporation
    Inventor: Britt O. Braddick
  • Patent number: 8365818
    Abstract: A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used to cycle the jar without reciprocating the well conduit at the wellhead. A hydraulic reset assembly is included. The hydraulic chamber is in fluid communication with the flow path through the tool. Thus, when the internal fluid pressure inside the tool exceeds the external pressure in the well, the fluid pressure drives the piston in the hydraulic chamber to urge the tool toward the contracted position. In this way, the reset assembly can overcome the tendency of fluid pressure to extend the tool. The reset assembly can be configured to equalize the extension pressure, to prevent undesired cocking of the tool, or to overcome the extension pressure to contract the tool for recocking the jar mechanism.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: February 5, 2013
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Roger L. Schultz, Andrew M. Ferguson, Michael L. Connell
  • Patent number: 8322413
    Abstract: The retrieving tool engages an equalizing sleeve on a jar down movement while the packer or bridge plug release sleeve is held fixed with a locking dog. The initial jarring down allows the tool to engage the equalizing sleeve and pull it up subsequent to the initial engagement by jarring down. Pulling or jarring up then opens the equalizing ports while still holding the release sleeve locked using a trapped collet. A subsequent jarring down allows engagement of a second sleeve so that a subsequent pulling or jarring up moves the second sleeve away from the collet that had otherwise held the set position of the packer or bridge plug. A pull or jar force up brings up the now released packer or bridge plug.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: December 4, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: David S. Bishop, Dennis E. Kroll
  • Publication number: 20120298365
    Abstract: This invention relates to a jar used to dislodge tools stuck in a well. The jar includes two housing portions movable with respect to each other. A release collet forms a portion of one of the housings. A release sleeve is carried by a mandrel and is located within the release collet. After a given amount of movement of the housing with respect to the mandrel, the release mechanism is activated and the two housing sections rapidly move with respect to each other. A hammer portion of the mandrel then strikes an anvil in the anvil housing, thus applying an upward force to the tool lodged in the well.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 29, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Robert W. Evans
  • Publication number: 20120227970
    Abstract: A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used to cycle the jar without reciprocating the well conduit at the wellhead. The tool includes a hydraulic reset assembly. The hydraulic chamber is in fluid communication with the flow path through the tool. Thus, when the internal fluid pressure inside the tool exceeds the external pressure in the well, the fluid pressure drives the piston in the hydraulic chamber to urge the tool toward the contracted position. In this way, the reset assembly can overcome the tendency of fluid pressure to extend the tool. The reset assembly can be configured to balance or equalize the extension pressure, to prevent undesired cocking of the tool, or to overcome the extension pressure to contract the tool for recocking the jar mechanism.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 13, 2012
    Applicant: THRU TUBING SOLUTIONS, INC.
    Inventors: Roger L. Schultz, Andrew M. Ferguson, Michael L. Connell
  • Publication number: 20120222857
    Abstract: A transport assembly comprising: an attachment member attachable to a downhole tool; normally two rotatable members, connected to the attachment member, the rotatable members being arranged to rotate around their main longitudinal axis; a plurality of engaging members attached to each rotatable member and extending radially outwards therefrom with respect to the main longitudinal axis; the engaging members being helically arranged around the rotatable members. The transport assembly can thus be driven into a well in a ‘corkscrew’ type manner. Embodiments include a jarring mechanism which may be reset downhole and can jar attached tools in either direction.
    Type: Application
    Filed: August 9, 2011
    Publication date: September 6, 2012
    Inventor: Graeme McNay
  • Patent number: 8256509
    Abstract: This invention relates to a jar used to dislodge tools stuck in a well. The jar includes two housing portions movable with respect to each other. A release collet forms a portion of one of the housings. A release sleeve is carried by a mandrel and is located within the release collet. After a given amount of movement of the housing with respect to the mandrel, the release mechanism is activated and the two housing sections rapidly move with respect to each other. A hammer portion of the mandrel then strikes an anvil in the anvil housing, thus applying an upward force to the tool lodged in the well.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: September 4, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Robert W. Evans
  • Patent number: 8230912
    Abstract: A bidirectional jarring tool that allows repetitive firing in one direction without firing the tool in the opposite direction. One of the tubular members provides up and down anvil surfaces, and the other member provides up and down hammer surfaces. Inner and outer tubular members define a hydraulic chamber with a restricted section that divides the chamber into an upper section and a lower section. Upper and lower pistons, each with a valved flow channel, reciprocate through the restricted section to produce up and down jarring impacts. When the restricted section is disposed between the upper and lower pistons, the tool is in a neutral position and can be jarred repetitively in either direction.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: July 31, 2012
    Assignee: Thru Tubing Solutions, Inc.
    Inventor: Michael L. Connell
  • Patent number: 8225860
    Abstract: A jarring tool having an extensible joint connecting first and second sub ends. A first inner latch piece connects to the upper sub end, and a second outer latch piece connects to the lower sub end. The joint, in a latched position, has the outer latch piece latched to the inner latch piece and the inner and outer latch pieces restrained from unlatching by a stationary restraining collar. Under tensile force the joint unlatches into an unlatched position by the outer latch piece pulling the inner latch piece through the restraining collar into a position where the inner and outer latch pieces are free to separate. An impact force is generated from the tensile force when the joint unlatches and reaches a maximum extension.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: July 24, 2012
    Assignee: Impact Selector, Inc.
    Inventor: Jason A. Hradecky
  • Publication number: 20120160477
    Abstract: A drill string includes a bit sub mounted to a lower end of a plurality of tubular sections, where at least one tubular section is a jar. The jar and the tubular sections have an inner diameter that is at least 4¼? and an outer diameter that is 7? or less. A method of drilling includes the steps of inserting the drill string into a downhole formation; causing the bit sub to drill a core sample that is received within a tubular section; and inserting a core retrieval tool through the drill string to retrieve the core sample.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Inventor: Norman Prokopchuk
  • Patent number: 8205690
    Abstract: A double action locking jar is operable to provide a jarring force in an upward or downward direction. A pair of pressure pistons form a pressure chamber in which a Belleville spring stack is located. A metering orifice in one of the pistons serves to provide a delay mechanism for release of a mandrel within the housing. Two collets are located within the housing for mechanically releasing the mandrel when a tension or compression force is applied to the mandrel. The jar may be mechanically actuated only by allowing the pistons to freely move within the housing without hydraulic resistance.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: June 26, 2012
    Inventor: Robert W. Evans
  • Patent number: 8201629
    Abstract: A staging tool arrangement for gas well production assistance, comprising an elongated staging tool having an elongated upper portion and an elongated lower portion. The upper portion has a sliding relationship with the lower portion thereof. A displaceable annular seal is arranged about the lower portion. A displaceable enclosure is arranged on the elongated lower portion so as to slidably expose and to slidably enclose the annular seal.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 19, 2012
    Assignee: Well Master Corp.
    Inventor: David A. Green
  • Patent number: 8191623
    Abstract: A shifting tool is run on slickline and has an on board power supply. Rotary motion of the motor is converted to linear motion of the shifting tool using a ball screw device. The grip is obtained with longitudinal motion of a grip linkage and an on board jar then can do the shifting. Alternatively a linear motor can be used to extend and retract the grip assembly and shift using the jar tool. Optionally the tool can be anchored and linear motion from the on board power source operating a motor can do the shifting.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: June 5, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Gerald D. Lynde, Yang Xu
  • Patent number: 8191626
    Abstract: A tool having a first lower sub end, a second upper sub end, and an extensible joint connecting the first and second sub ends. The joint has a first inner latch piece connected to the lower sub end, and a second outer latch piece connected to the upper sub end, and a stationary restraining collar. The joint, in a latched position, has the outer latch piece latched to the inner latch piece and the inner and outer latch pieces restrained from unlatching by the restraining collar. The joint, under tensile force, unlatches into an unlatched position by the inner latch piece pulling the outer latch piece through the restraining collar into a position where the inner and outer latch pieces are free to separate. An impact force is generated from the tensile force when the joint unlatches and reaches a maximum extension.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: June 5, 2012
    Assignee: Impact Selector, Inc.
    Inventor: Jason A. Hradecky
  • Patent number: 8171988
    Abstract: A stroker tool for providing an axial force in an axial direction of a downhole tool. The stroker tool has a pump, a driving unit for driving the pump, and an axial force generator. The generator has an elongated piston housing having a first and a second end, and a piston provided on a shaft, and the shaft penetrates the housing for transmitting the axial force to another tool. The piston is provided in the piston housing so that the shaft penetrates the piston and each end of the piston housing and divides the housing into a first and a second chamber, and the first and the second chamber are each fluidly connected to the pump via at least one duct so that the pump can pump fluid into one chamber by sucking fluid from the other chamber for moving the piston within the housing, and thereby moving the shaft back and forth.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: May 8, 2012
    Assignee: Weltec A/S
    Inventors: Jørgen Hallundbaek, Rasmus Sommer
  • Publication number: 20120090843
    Abstract: The invention relates to oil and gas industry and can be used in well drilling as a part of a Bottom Hole Assembly (BHA) to releasing stuck tools or equipment by applying axial and torque impacts. The claimed jar allows to increase the effectiveness of BHA operation in well drilling, especially when BHA comprises a telescopic system, since exception of unauthorized accidental operations of a jar substantially reduces the risk of failure in telescopic system electronic components, make the drilling process more predictable and enhance endurance of a jar itself. In case of emergency, the probability of retrieving stuck assembly will be incomparably higher, since the claimed jar provides the possibility to make simultaneously axial and torque impacts.
    Type: Application
    Filed: December 26, 2011
    Publication date: April 19, 2012
    Inventors: Yunir Gafurovich VAGAPOV, Gniyatulla Garifullovich ISHBAEV, Samat Yunirovich VAGAPOV
  • Patent number: 8151910
    Abstract: A bidirectional drilling jar, capable of repeated unidirectional firing, including a sliding assembly that is disposed in a sliding relation to the interior of a barrel assembly. A portion of the inner diameter of the barrel assembly forms a restricted barrel segment. The restriction intermediate an upper chamber and a lower chamber. A metering system comprising an upper flange a meter valve, and a lower flange. The meter valve slideably disposed on the sliding assembly between the upper and lower flanges. The metering system travels between the upper chamber and the lower chamber providing limited, controlled flow of the fluid contained therein when passing through the restriction in order to pressurize the system and produce a jarring stroke. Alternatively, the metering system comprises an upper flange, a meter ring, a meter valve, and a lower flange. The meter valve and meter ring are slideably disposed on the sliding assembly intermediate the upper and lower flanges.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: April 10, 2012
    Inventor: Jerry L. Swinford
  • Publication number: 20120043073
    Abstract: The retrieving tool engages an equalizing sleeve on a jar down movement while the packer or bridge plug release sleeve is held fixed with a locking dog. The initial jarring down allows the tool to engage the equalizing sleeve and pull it up subsequent to the initial engagement by jarring down. Pulling or jarring up then opens the equalizing ports while still holding the release sleeve locked using a trapped collet. A subsequent jarring down allows engagement of a second sleeve so that a subsequent pulling or jarring up moves the second sleeve away from the collet that had otherwise held the set position of the packer or bridge plug. A pull or jar force up brings up the now released packer or bridge plug.
    Type: Application
    Filed: August 17, 2010
    Publication date: February 23, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: David S. Bishop, Dennis E. Kroll
  • Patent number: 8109746
    Abstract: A progressing cavity pump/motor includes an upper stator tube (14), a lower stator tube (16), a rotor (20) sitting between the upper and lower stator tubes, and a coupling assembly (30) interconnecting the stator tubes comprising an outer sleeve (32), an inner sleeve (36) and a nut (60) for threaded engagement with at least one of the sleeves to bring a stop surface on the inner sleeve into mating engagement with the stop surface on the outer sleeve. The pump/motor is usually assembled in the field while maintaining precise axial and rotational positioning of the stator tubes.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: February 7, 2012
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventor: Michael J. Guidry, Jr.
  • Publication number: 20120018144
    Abstract: A jar is disclosed comprising: an outer housing; an inner mandrel at least partially disposed telescopically within the outer housing to define a fluid chamber between the inner mandrel and the outer housing, the fluid chamber containing fluid and being sealed; a valve disposed within the fluid chamber, the valve having a restriction surface facing, during setting, a cooperating restriction surface on one of the inner mandrel and the outer housing and a pressure surface facing the other of the inner mandrel and the outer housing, the valve being movable between a seated position in which the valve seats against the other of the inner mandrel and the outer housing and an unseated position; the cooperating restriction surface cooperating with the restriction surface to set the jar for a jar in a first direction; the pressure surface being exposed to fluid within the fluid chamber when the jar is set and pressuring up for a jar in the first direction; the pressure surface being indented to cause uneven radial mo
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: LEE OILFIELD SERVIC LTD.
    Inventors: Michael SHOYHETMAN, David BUDNEY, Craig BUDNEY, Glenn BUDNEY