On Tubing Or Casing Patents (Class 166/173)
  • Patent number: 9624757
    Abstract: A tool for cleaning a casing tubular (13??) via a narrower casing tubular (9??) or width restriction, has an elongate tool body 1 with axial throughbore 2, box 3 for a corresponding pin 4 to form a tool joint with a workstring 5. In FIG. 1, the body has a nose 6 with fluid discharge channel 7 to pass circulation fluid. An internal shoulder provides a valve seat 8 for a ball 9 passed through the workstring under gravity or during pumping of fluid. Transverse channels 10 receive fluid diverted when the ball is seated within the tool. A side surface 21 has fluid outlet ports 11, and at least one further working surface 22 has tool elements, e.g. bristle-type cleaning elements 23, or scrapers or wipers. Thus the tool body is asymmetrical offering jetting functionality on one side of the tool and mechanical cleaning on the other side.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: April 18, 2017
    Assignee: M-I DRILLING FLUIDS UK LTD
    Inventor: George Telfer
  • Patent number: 9595355
    Abstract: An annulus spacer for a fuel channel assembly of a nuclear reactor, and method of manufacturing an annulus spacer. The fuel channel assembly includes a calandria tube and a pressure tube positioned at least partially within the calandria tube. The annulus spacer includes a garter spring configured to surround a portion of the pressure tube to maintain a gap between the calandria tube and the pressure tube. A girdle wire is positioned substantially within the garter spring and configured to form a loop around the pressure tube. The girdle wire includes a first segment and a second segment that overlaps the first segment to form an overlap, the overlap extending between approximately 45 degrees and approximately 135 degrees to reduce the possibility of girdle wire twisting.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 14, 2017
    Assignee: Atomic Energy of Canada Limited
    Inventors: Jean-Claude Stranart, Marcia Helen Sanderson, Donald Ray Metzger, Andre Roger Gagnon, Reza Ziaei, Jan Frantisek Slavik
  • Patent number: 9574406
    Abstract: A completion system comprises tubular components coupled together to form a completion string. In-flow control devices are provided to permit selective fluid communication between an internal bore of the completion string and the annulus. A reaming tool is provided at a leading end of the completion string and the reaming tool is run into the borehole with the completion string. The reaming tool comprises a fluid-powered drive unit, a reaming body and a reaming nose. In use, the completion string is located in the borehole and fluid is directed to the reaming tool to facilitate reaming of the borehole. A second tubular in the form of a washpipe may extend through an internal bore of the completion string for providing fluid to the reaming tool. The reaming tool is operable at a fluid pressure below a pressure which would activate the in-flow control devices.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: February 21, 2017
    Assignee: Deep Casing Tools, Ltd.
    Inventors: Lance S. Davis, Edward D. Scott, Mark W. Presslie
  • Patent number: 9567828
    Abstract: An apparatus and method for substantially sealing an opening defined by a hydrocarbon well downhole component, wherein an interior portion of the downhole component is in fluid communication with a formation surrounding the hydrocarbon well. The apparatus includes a deformable plug adaptable to being injected into the wellbore upstream of the opening and carried through the wellbore in a fluid. The fluid carrying the deformable plug can flow through the opening and the deformable plug is sized and configured such that at least a portion of the deformable plug can deform to the contour of the opening and seat in the opening. The deformable plug is capable of swelling, hardening, or compressing such that the deformable plug forms a substantially sealed relationship with the hydrocarbon well downhole component such that the interior portion of the downhole component ceases to be in fluid communication with the formation surrounding the well.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: February 14, 2017
    Inventors: Glen Mitchell Kniffin, John David Harkrider, William Lee Anthony, Jeff S. Jordan
  • Patent number: 9512696
    Abstract: A torque resistant casing scraper for attachment to a drillstring is comprised of a one piece tool body having rotationally unrestrained two-piece blade carriers with hardened diamond-shaped cutting blades and rotationally unrestrained two-piece axial centralizers. Adjoining blade carriers and centralizers rotate independently of the drillstring and the blade carriers interlocked to prevent relative rotation between the blade carriers and to index, or orient the cutting blades as desired along the longitudinal axis of the casing scraper. The diamond-shaped cutting blades and the indexed blade carriers allow both right-handed and left-handed drillstring rotation without reducing utility or effectiveness of the scraper. The casing scraper is particularly effective for deep, near-horizontal wellbores.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: December 6, 2016
    Inventor: Dennis Joel Penisson
  • Patent number: 9284818
    Abstract: The present invention relates to a downhole tool (1) for borehole cleaning or for moving fluid in a borehole. The tool comprises a tool housing (29), a chamber inlet (6) and a chamber outlet (36), and the tool housing comprises a pump (8) arranged in a pump housing (4) and a driving unit powered by an electrical conducting means for driving the pump.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 15, 2016
    Assignee: WELLTEC A/S
    Inventors: Jørgen Hallundbæk, Peter Gråbæk
  • Patent number: 9228400
    Abstract: An apparatus to alter the flow of a fluid (e.g., drilling fluid, mud, cement, etc.) in a wellbore by creating turbulence in the flowing fluid. The apparatus includes a plurality of blade members extending outward from an elongated member. The elongated member is attached to the exterior surface of a tubular that is then positioned in a wellbore.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: January 5, 2016
    Assignee: ANTELOPE OIL TOOL & MFG. CO.
    Inventors: Jean P. Buytaert, Troy McDaniel
  • Patent number: 9222336
    Abstract: Systems and method for improving down hole operations of well casings are disclosed herein. Systems and methods disclosed herein can comprise brushes, high pressure fluid outlets, and skids. Other systems and methods are disclosed herein.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: December 29, 2015
    Assignee: Well Grounded Energy, LLC
    Inventors: Dave Winn, Elvis E. Dean
  • Patent number: 9163483
    Abstract: The rod guide and solids control assembly can be mounted on a rod string. The assembly can allow well fluid that contains high solids to pass through the pump under normal operation while eliminating the solids from being swept back into the pump barrel. The assembly can include a body portion coupled to a bristle that extends helically around the body portion. The body portion can be placed on a pump valve rod or hollow valve rod. On an upstroke, the bristles can be locked into place for trapping and lifting the solids. On a downstroke, the bristles can be rotated for leaving the solids higher and away from a pump intake. This can allow the solids to be lifted out of the pump and thereby prevent solids from collecting on a bottom portion of the pump. Multiple assemblies can be incorporated into the sucker rod string.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 20, 2015
    Inventor: Michael Brent Ford
  • Publication number: 20150114665
    Abstract: Milling tools, systems, and assemblies may have an adjustable gauge diameter. An example mill may include a body with tracks thereon. The tracks may slope in an axial direction and may be configured to couple to multiple blades. A locking collar may be positioned on the body and may be movable between multiple locking positions. Each locking position may be axially offset from another. At each locking position, the blades may be located at a different axial position on the body. Where the tracks slope, each different axial positions of the blades may also correspond to a different radial position for the blades. A gauge diameter of the blades may be based on the locking positions of the locking collar.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Inventors: Kenneth Daniel Hora, Kenneth M. Nevlud
  • Patent number: 8960297
    Abstract: A well cleanout tool configured to replace a joint of tubing in a multi-joint tubing string for a wellbore. The well cleanout tool having a bushing threadable to a tubular and a one piece integral nozzle threaded to the tubular opposite the bushing, with an inner gas separator assembly contained within the tubular for flowing particulate out the nozzle end and cleaned wellbore fluid out the bushing end.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 24, 2015
    Inventor: Daman E. Pinson
  • Patent number: 8955584
    Abstract: A method of drilling and cleaning a wellbore while rotating the drill string after full drilling depth is reached without running the drill string out the bore to install a clean up work string is disclosed wherein a drill string having a drill bit at one end includes at least one near bit selectively activatable cleaning tool (10, 11, 12) mounted within the length of the drill string, said cleaning tool having a cleaning member (18) adapted to be moved from a close fitting stowed configuration within a recess (17) to a deployed configuration upon a body of the tool, wherein the cleaning member has magnets (19, 43) for use in positioning thereof, and compact tools for scraping, milling and brushing with improved resistance to ingress of detritus, debris and formation particulates are disclosed.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: February 17, 2015
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: George Telfer
  • Publication number: 20150027713
    Abstract: A torque resistant casing scraper for attachment to a drillstring is comprised of a one piece tool body having rotationally unrestrained two-piece blade carriers with hardened diamond-shaped cutting blades and rotationally unrestrained two-piece axial centralizers. Adjoining blade carriers and centralizers rotate independently of the drillstring and the blade carriers interlocked to prevent relative rotation between the blade carriers and to index, or orient the cutting blades as desired along the longitudinal axis of the casing scraper. The diamond-shaped cutting blades and the indexed blade carriers allow both right-handed and left-handed drillstring rotation without reducing utility or effectiveness of the scraper. The casing scraper is particularly effective for deep, near-horizontal wellbores.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 29, 2015
    Inventor: Dennis Joel Penisson
  • Patent number: 8919433
    Abstract: A space filler material is used to prevent accumulation of debris that could later foul the operation of adjacent moving parts. In one application a void space that is subsequently closed by actuated parts is initially filled with a material that is highly compressible and has voids that allow it to compress without undue resistance to part movement when the void volume is reduced. Ideally, the pores or voids in the material itself are small enough to keep most if not all the debris from entering and making the space filling material too rigid to collapse under part movement. In an alternative application, the material can be in an annular space such as a seal bore and it can keep debris from getting past the seal bore while allowing hydrostatic pressure across itself thereby helping it to maintain its position until moved such as by shifting of an inner string to which it is attached.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: December 30, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Edward J. O'Malley
  • Patent number: 8869884
    Abstract: A downhole cleaning tool for cleaning a casing is provided with a diverter cup assembly (102) including a housing (126) and a resilient swab cup (105) slidably mounted on a tubular body (120) with an increased external diameter portion 128 defining at either end upper and lower limit stops (130, 132), and sized to make provision for a gap (136) which allows a sliding movement of the swab cup such that only one of limit stops (130, 132) engages to always pull the swab cup via optional bearings (134) at each extremity of the sliding travel according to whether the tool is being run in hole or pulled out of the hole. This means that the swab cup is not compressed into a squat oversize shape susceptible to contact damage, and is naturally drawn out to tend towards an elongate shape in either direction of tool motion.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: October 28, 2014
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: George Telfer
  • Patent number: 8844622
    Abstract: A method of drilling and cleaning a wellbore includes providing a drill string having a drill bit and a cleaning tool with selectively activatable cleaning members; drilling a wellbore using the drill bit while maintaining the cleaning members in a deactivated position; and pulling the drill string from the wellbore with the cleaning members in an activated position, to thereby clean the wellbore. A corresponding cleaning tool includes a body having a bore running therethrough, a sleeve located within the bore, the sleeve including a ball seat and the sleeve being biased in a first direction, and a plurality of selectively activatable cleaning members mounted for repeated movement relative to the body between activated and deactivated positions.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: September 30, 2014
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: George Telfer
  • Patent number: 8826986
    Abstract: A downhole tool including a resilient body configured to be disposed on a drill string, the resilient body comprising a plurality of radial blades having an abrasive coating, wherein the radial blades are configured to deflect when inserted into downhole tubing, and wherein the resilient body is configured to allow rotation relative to the drill string. Additionally, a method for cleaning downhole tubing, the method including inserting a resilient scraper disposed on a drill string into the downhole tubing, the resilient scraper including a plurality of radial blades having an abrasive coating. The method further including rotating the drill string, and contacting the resilient scraper to an internal wall of the downhole tubing.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 9, 2014
    Assignee: M-I L.L.C.
    Inventor: John C. Wolf
  • Patent number: 8714260
    Abstract: An apparatus for cleaning the inner wall of wellbores and for capturing downhole wellbore debris. An elongated, tubular central mandrel is provided with recesses on its outer surface. Various service elements are interchangeably mounted over the split rings. The various service elements include stabilizers, brush assemblies, junk baskets and magnets.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: May 6, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Benton Knobloch, Todd Roy, Iris T. Callegari
  • Patent number: 8684074
    Abstract: Work string-mounted cleaning tool and a method of assembling such tools using a quick release for the cleaning element. Oblong pad element has a curved upper surface with slots to receive work surface segments. Opposite edge has a part-circular recess with part-circular peripheral lip around an upper edge of the recess. A retainer fastening component in the recess has a core with socket adapted to receive a driving tool. The retainer is sized to permit it to rotate when mounted within the recess. Roll pins are provided for use in locating the fastener component in predetermined rotational configurations in relation to the recess. Shear pin is provided to inhibit unintended rotation of the fastener component, and to lock the retainer for normal use of the cleaning tool. Shearing of the shear pin permits disassembly of the tool.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 1, 2014
    Assignee: Specialized Petroleum Services Group Limited
    Inventors: James Edward Atkins, James Linklater, George Telfer
  • Publication number: 20140000900
    Abstract: A drill pipe mountable wellbore cleaning tool apparatus is of an improved configuration that enables attachment to a drill pipe joint having first and second connector end portions and a cylindrically shaped portion in between the connector end portions. The drill pipe joint with attached debris cleaning tool or tools is made part of a drill string. The apparatus includes a support sleeve that is mounted to the drill pipe joint in between the connector end portions. The support sleeve abuts but does not invade the integrity of the cylindrical portion. Centralizers are attached to the opposing ends of the support sleeve, with each centralizer overlapping a portion of the support sleeve. The support sleeve carries one or more debris cleaning tools in between the centralizers. These tools enable debris to be removed from a wellbore. At least one locking clamp is attached to the cylindrical portion next to a said centralizer.
    Type: Application
    Filed: December 11, 2012
    Publication date: January 2, 2014
    Inventors: Simon Leiper, Kevin Robertson
  • Patent number: 8607871
    Abstract: A downhole jetting tool is provided for cleaning the interior of one or more hydraulic rams (14, 18) and one or more annular blowout preventers (26, 28). A unitary jetting tool body (40) has a central throughbore (42) and a plurality of radially outward jets (42, 46). A tapered landing shoulder (50) on the tool body engages a frustoconical surface of a landing ring (22) to position the tool in the well.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: December 17, 2013
    Inventor: William E. Coyle, Jr.
  • Patent number: 8511375
    Abstract: A wellbore cleaning device having a unitary tool mandrel surrounded by a retaining sleeve that is rotatable with respect to the mandrel. A locking ring is used to secure the retaining sleeve to the mandrel. Cleaning blades are retained within recesses in the retaining sleeve and are biased radially outwardly from the recesses by springs.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: August 20, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Gregory L. Hern, Lisa L. Posevina, Paul L. Connell
  • Publication number: 20130192818
    Abstract: Systems and method for improving down hole operations of well casings are disclosed herein. Systems and methods disclosed herein can comprise brushes, high pressure fluid outlets, and skids. Other systems and methods are disclosed herein.
    Type: Application
    Filed: January 21, 2013
    Publication date: August 1, 2013
    Applicant: WELL GROUNDED ENERGY, LLC
    Inventor: WELL GROUNDED ENERGY, LLC
  • Publication number: 20130186632
    Abstract: An object for wiping a subterranean casing is described herein. The object may include an inner core with a first width. The ball may also include a deformable layer surrounding the inner core. The deformable layer may have a second width. The first width may be smaller than a diameter of at least one baffle within the subterranean casing. The second width may be larger than or equal to the largest inner diameter of the subterranean casing.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 25, 2013
    Inventors: Gary Joe Makowiecki, Patrick Lyle Cherney, Matthew Todd Howell
  • Patent number: 8491727
    Abstract: There is described an apparatus device for mechanically loosening scale inside a pipe arranged to convey hydrocarbon fluids from a production zone in a well, in which an actuator arranged in a housing includes an axially movable stem which extends through at least part of the housing and is provided with at least one cam, at least one cutting means is arranged radially movable in a recess in the housing, the cam bearing, by the axial movement of the actuator towards a first extreme position, against the cutting means, applying to it a push force directed radially outwards. There is also described a method of mechanically loosening scale inside a pipe arranged to convey hydrocarbon fluids from a production zone by using the apparatus.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: July 23, 2013
    Assignee: Exai AS
    Inventor: Ann Jeanett Jonassen Ellingsen
  • Publication number: 20130153245
    Abstract: Disclosed is an apparatus for cleaning the inner wall of wellbores and for capturing downhole wellbore debris. An elongated, tubular central mandrel is provided with recesses on its outer surface. Various service elements are interchangeably mounted over the split rings. The various service elements include stabilizers, brush assemblies, junk baskets and magnets.
    Type: Application
    Filed: June 18, 2012
    Publication date: June 20, 2013
    Applicant: WELLBORE ENERGY SOLUTIONS LLC
    Inventors: Benton Knobloch, Todd Roy
  • Patent number: 8408307
    Abstract: This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. In one embodiment of the invention, a method of drilling and cleaning a wellbore (12) is disclosed. The method comprises the steps of providing a drill string (10) having a drill bit (28) and a cleaning tool (24) with selectively activatable cleaning members (34); drilling a wellbore using the drill bit while maintaining the cleaning members in a deactivated position; and pulling the drill string from the wellbore with the cleaning members in an activated position, to thereby clean the wellbore. A corresponding cleaning tool is also disclosed.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: April 2, 2013
    Assignee: Specialized Petroleum Services Group Limited
    Inventor: George Telfer
  • Patent number: 8376043
    Abstract: An improved and enhanced spring loaded downhole tool for cleaning well casing bores comprising a mandrel, at least a first insert having a passageway therethrough, and at least a second insert, wherein both the first insert and the second insert are selected from at least one of a spring loaded scraper insert and at least one wire brush insert, and further wherein the first insert and the second insert are slidingly received within a slot on a first mounting portion on the mandrel and a slot on a second mounting portion on the mandrel, from the outermost respective ends, and wherein the first insert is secured by a first retaining sleeve and the second insert is secured by a second retaining sleeve. Also disclosed is a unique method for cleaning a section of casing with a downhole tool, as herein disclosed.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: February 19, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Benton T. Knobloch, Todd J. Roy, Clint M. Musemeche
  • Patent number: 8376055
    Abstract: A shearing tool for shearing, trimming, or reducing objects being pulled through a drill string and methods for retrieving retrievable tools with fins from the drill string, where the retrievable tools must pass through restrictions in the drill string having interior diameters less than the outer diameters of the fins. The fins, affixed to the retrievable tools, provide stability to the tools, while within the drill string, and can be made of rubber, plastic, other shearable materials, or combinations thereof. The apparatuses and methods include inserting a shearing tool with a flange into a box end of a section of drill string, where the flange keeps the shearing tool in place. The shearing tool further comprising a cutting surface for cutting materials pulled through the shearing tool.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: February 19, 2013
    Inventors: James Edward Chambers, II, Gerald Robert Byrd
  • Patent number: 8360153
    Abstract: A debris-catching attachment device and method therefor is disclosed. When positioned in wellbore tubing, the device collects solid impurities found in well environments, thereby preventing the solids from settling onto the pump and its components when pumping operations are halted. The device comprises a ring having one of a plurality of brushes and a plurality of wiper segments coupled to a surface of the ring. As fluid is being forced naturally upward or is pumped, it flows past the components of the ring and is caused to rotate or spin in a cyclonic motion. During the first phase of well production, this directs the fluid and solids toward the tubing wall, allowing gas to escape upward. During the second phase of production, solids are caused to move toward the wall of the tubing, allowing any water and oil to move upward to the surface, with the surface tension dragging the solids along the wall of the tubing. The solids may accumulate on the brushes or wiper segments when pumping operations are halted.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 29, 2013
    Inventor: Michael Brent Ford
  • Patent number: 8364421
    Abstract: Methods and devices for detecting particles in a fluid within a medium, such the analyzing device includes: a source adapted to transmit signals into the medium; at least one detector adapted to detect signals transmitted from the source such that the at least one detector and the source are structured and arranged on opposite sides of the medium; at least one processing unit in communication with the at least one detector and adapted to produce a plurality of output signals representative of one of at least one particle characteristic or one or more particle property.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Felix Chen, Gary Corris
  • Patent number: 8356377
    Abstract: A reinforced cup for use on downhole devices is disclosed. The reinforced cup is comprised of a cylindrical metal sleeve. Surrounding the outer circumferential surface of the metal sleeve is a flexible mesh cage comprised of a plurality of woven wire strands. A resilient cover is formed around the metal sleeve and flexible mesh cage so that the metal sleeve and flexible mesh fabric are encased by the resilient cover. The flexible mesh cage serves to reinforce the resilient cover.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: January 22, 2013
    Assignee: Full Flow Technologies, LLC
    Inventor: Thomas M. Harper
  • Patent number: 8356662
    Abstract: A device for improving down hole operations includes a tube that delivers high pressure jets of fluid against the interior surface of a well casing and optionally into perforations of the well casing. The tube also includes a helical array of brushes that scrape and scratch accumulated residue from the interior surface of a well casing and optionally into perforations of the well casing. A method for improving down hole operations includes moving the device into a bend or turn in an existing well casing string and retracting a nozzle or brush to facilitate passage of the device past the bend or turn.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: January 22, 2013
    Assignee: Well Grounded Energy, LLC
    Inventor: Dave Winn
  • Patent number: 8347446
    Abstract: A tool for cleaning a drainage structure comprises a rod having a center longitudinal axis, a barrel housing having a proximal opening and a distal opening, the barrel housing having a center longitudinal axis and coupled coaxially to the rod, the barrel housing having an outside dimension that can be accommodated within the drainage structure, the distal opening of the barrel housing having a sinusoidal tearing contour. The tool further comprises a plurality of cutting implements radially coupled to and between the rod and the barrel housing, the cutting implements having a distal cutting edge and being angularly oriented to facilitate sweeping debris in a selected direction, and the barrel housing and cutting implements operable to rotate about the center longitudinal axis of the rod to dislodge and loosen debris inside the drainage structure.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: January 8, 2013
    Assignee: Harr Technologies, Inc
    Inventor: Robert E. Harr
  • Publication number: 20120298350
    Abstract: A well cleaning tool including a tubular body, a cylindrical sleeve and at least one scratching element. The tubular body includes a threaded lower end for attaching to an end cap, and a plurality of first passages. The cylindrical sleeve is sized to receive the tubular body and includes a plurality of second passages such that the second passages are in alignment with the first passages. The at least one scratching element is preferably a rigid cable with frayed ends that is passed through the aligned first and second passages such that the frayed ends outwardly extend from an outer surface of the sleeve. Threading or tightening the tubular body lower end to the end cap will cause the first and second passages out of alignment, causing the rigid cable to crimp or pinch between the first and second passages, retaining the rigid cable in place.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 29, 2012
    Inventor: Randy L. Smith
  • Publication number: 20120285696
    Abstract: Wiper plugs or other shapes are made from shape memory foam in a size large enough to wipe or clean a tubular of a predetermined size. The plug or other shape is then reformed to a smaller dimension above its transition temperature and allowed to cool while holding that shape. The smaller shape allows delivery through a running string that is smaller than the tubular string to be wiped. Preferably before reaching the string to be wiped, the trigger is applied to get the wiper or other shape above its transition temperature where it then reverts to the prior larger dimension for effective wiping of the string that it will next pass through. The trigger can be well fluid temperature or composition, applied heat from the tubular, generated heat within the wiper or other shape, or heat released from agents introduced into the well acting alone or in conjunction with well fluids.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 15, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Bennett M. Richard, Oleg A. Mazyar
  • Publication number: 20120255724
    Abstract: The present invention relates to a downhole tool (1) for borehole cleaning or for moving fluid in a borehole. The tool comprises a tool housing (29), a chamber inlet (6) and a chamber outlet (36), and the tool housing comprises a pump (8) arranged in a pump housing (4) and a driving unit powered by an electrical conducting means for driving the pump.
    Type: Application
    Filed: December 23, 2010
    Publication date: October 11, 2012
    Inventors: Jørgen Hallundbæk, Peter Gråbæk
  • Patent number: 8245775
    Abstract: A subpart of a drill string is described having an outer circumferential surface which is contoured and adapted to engage the wall of the borehole with a small angle of attack while exerting during rotary drilling operations an compacting pressure on mud cake and/or cuttings present in the annulus between the drill string and the borehole.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: August 21, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Iain Cooper, Claude Vercaemer, William Lesso, Benjamin Peter Jeffryes, Michael Charles Sheppard
  • Publication number: 20120193100
    Abstract: A downhole jetting tool is provided for cleaning the interior of one or more hydraulic rams (14, 18) and one or more annular blowout preventers (26, 28). A unitary jetting tool body (40) has a central throughbore (42) and a plurality of radially outward jets (42, 46). A tapered landing shoulder (50) on the tool body engages a frustoconical surface of a landing ring (22) to position the tool in the well.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 2, 2012
    Inventor: William E. Coyle, JR.
  • Patent number: 8225884
    Abstract: A down hole well bore apparatus to underream and remove rock or cement or other material, cut or mill casing, clean or scrape casing, or centralize a drill string, which has a rotor which actuates blades, a compact overall length and can be operated with normal or reverse circulation. Simultaneous operations or multiple sequential operations can be made without removing the drill string.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: July 24, 2012
    Inventor: Alan L. Nackerud
  • Publication number: 20120118577
    Abstract: A well tool (100) for use in cleaning a well of fluids and debris characterized by one or more wiper elements (30) for swabbing the wellbore and internal passageways (11, 15) and valves (70, 72) in the tool, permitting forward and reverse fluid circulation through the tool to bypass the wiper elements.
    Type: Application
    Filed: July 27, 2010
    Publication date: May 17, 2012
    Inventors: Kevin O. Trahan, Benton T. Knobloch, JR., Todd J. Roy, Javier E. Bolivar
  • Publication number: 20120111557
    Abstract: A landing sub for a wiper, the wiper being adapted for internal removal of drilling mud from a drill string during its pull-out from a borehole, wherein the landing sub is mountable in the drill string, the landing sub comprises a longitudinal bore for through-flow of drilling mud and a landing seat for receiving the lower end of the wiper during pumping of drilling mud through the drill string, and the landing seat is equipped with at least one duct or passage for through-flow of drilling mud past the lower end of the wiper during continued pumping of drilling mud in the drill string.
    Type: Application
    Filed: June 2, 2010
    Publication date: May 10, 2012
    Applicant: 2K TOOLS AS
    Inventors: Kjell Mikalsen, Ketil Botn-Mark
  • Patent number: 8141628
    Abstract: A downhole deburring tool is equipped with retractable cutters which permit it to fit through restrictions in a wellbore—e.g., a subsurface safety valve—and subsequently expand to deburr or scrape a section of tubing having an internal diameter greater than that of the restriction. In one preferred embodiment, tapered surfaces on the tool act to effect retraction of the cutters during withdrawal of the tool from a wellbore. Deburring operations with the tool may increase the effectiveness of bridge plugs and/or ball sealer systems to permit chemical treatment of selected zones. Scraping operations with the tool to remove scale, corrosion and other material from the inner surface of a well tubular can increase the effective diameter of the tubing thereby allowing greater production.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: March 27, 2012
    Assignee: Precision Energy Services, Inc.
    Inventor: Paul Douglas Hart
  • Patent number: 8136587
    Abstract: A downhole tubular scraper is run in on slickline with an on board power supply. It features counter-rotating scrapers without an anchor in one embodiment or an anchor with single rotating scrapers. The scraper is selectively operated to conserve power in the power supply. A drive system uses a single driver to obtain counter-rotating motion in the scrapers.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 20, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Gerald D. Lynde, Yang Xu
  • Publication number: 20120048560
    Abstract: A spacing device is located on a lower end of a debris removal tool. Circulation through the tool extends telescoping members to the top of the debris zone against a bias that retracts the members when there is no flow through the tool. The lowest telescoping member has peripheral slots through which the circulation for the tool takes place. The landing of the tool on top of the debris can be detected by the weight indicator at the surface. The device prevents embedding the lower end of the tool into the debris. Instruments can also determine the scope of the telescoping extension and transmit that value to the surface so that the cleanup tool can be continuously spaced from the moving top of the debris pile by maintaining a target distance for extension of the telescoping assembly.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 1, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Mohan L. Soni, Namhyo Kim, Steve Rosenblatt
  • Patent number: 8113285
    Abstract: A wellbore cleaning assembly is run into a wellbore to be cleaned on a work string. The cleaning assembly comprises a number of cleaning elements for cleaning a wall of the wellbore; and an oscillator coupled to the at least one cleaning element by a force transmission element, for generating an axial oscillating movement of the at least one cleaning element relative to the work string.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: February 14, 2012
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: Glynn Williams
  • Publication number: 20120006554
    Abstract: A tool for cleaning subsea structures, the tool comprising a frame comprising a stationary frame portion; and a rotating frame portion rotationally connected to the stationary frame portion; and at least one cleaning device attached to the rotating frame portion.
    Type: Application
    Filed: February 24, 2010
    Publication date: January 12, 2012
    Inventors: Donald Wayne Allen, Stephen Paul Armstrong, Christopher Steven West
  • Publication number: 20110315387
    Abstract: A system for cleaning a bottom-hole formation zone of a wellbore comprises a flow string for extending into the bottom-hole formation zone of the wellbore. A hydrostatic joint is disposed along the flow string. The hydrostatic valve includes a valve which controls the flow of fluid through the flow string. There is a fluid supply for discharging fluid into the wellbore around the flow string to create a hydrostatic pressure differential between the flow string and the wellbore. Fluid and suspended solids in the bottom-hole formation zone of a wellbore are prevented from flowing into the flow string when the valve is closed. However, fluid and suspended solids in the bottom-hole formation zone of a wellbore are permitted to flow into the flow string when the valve is open.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 29, 2011
    Inventors: Marat Shatikovich Gamerov, Ildar Mavletovich Yafarov, Evgeniy Nikolaevich Denisov
  • Publication number: 20110308786
    Abstract: A downhole cleaning tool for cleaning a casing is provided with a diverter cup assembly (102) including a housing (126) and a resilient swab cup (105) slidably mounted on a tubular body (120) with an increased external diameter portion 128 defining at either end upper and lower limit stops (130, 132), and sized to make provision for a gap (136) which allows a sliding movement of the swab cup such that only one of limit stops (130, 132) engages to always pull the swab cup via optional bearings (134) at each extremity of the sliding travel according to whether the tool is being run in hole or pulled out of the hole. This means that the swab cup is not compressed into a squat oversize shape susceptible to contact damage, and is naturally drawn out to tend towards an elongate shape in either direction of tool motion.
    Type: Application
    Filed: February 23, 2010
    Publication date: December 22, 2011
    Applicant: SPECIALISED PETROLEUM SERVICES GROUP LIMITED
    Inventor: George Telfer
  • Publication number: 20110266000
    Abstract: The invention provides a device for cleaning a wellbore, comprising a tubular section, a helical scratcher mounted thereof wherein said helical scratcher contains flexible wires characterized in that the helical scratcher is able to rotate axially to tubular section when a fluid flows axially to tubular section. Alternatively, the invention provides the method to clean a wellbore wall of a well, said method comprises the steps of: incorporating a device as previously described into the wellbore; moving the device in the well and allowing the fluid flowing axially to the wellbore wall to rotate the scratcher; removing deposit at wellbore wall; leaving a cleaned wellbore wall.
    Type: Application
    Filed: July 17, 2009
    Publication date: November 3, 2011
    Inventors: Gérard Daccord, Diego Moser, Mathew Samuel