Surrounding Existing Rod Patents (Class 166/241.4)
  • Patent number: 10576489
    Abstract: A system for maintaining conduits and pipes after their installation into a pipeline system used to transport material in a fluid or flowable form. The system includes a maintenance tool adopted for use inside the pipe, an umbilical attached to the maintenance tool for pulling the tool through the pipe; and a pluralities of bearings positioned around the umbilical in order to allow the tool to be pulled through the pipe around bends and turns in the pipe.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: March 3, 2020
    Inventor: Douglas W. Motzno
  • Patent number: 10167682
    Abstract: A spin-through rod centralizer consisting of a stator mounted on the rod coupling which provides the bearing surface for rotation of the coupling within the stator. The stator is restrained from such axial movement by two steel “washers” that are captured between the rod shoulders and the coupling when the connection between two rods is made up. The washers are slightly larger in diameter than the coupling and thereby keep the stator located on the coupling, yet do not restrict the relative rotation between the coupling and the stator. An alternative configuration uses a coupling with a shoulder at one end that acts as one of the “washers” to restrain the stator from axial movement.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: January 1, 2019
    Assignee: HARRIER TECHNOLOGIES, INC.
    Inventor: William Bruce Morrow
  • Patent number: 9657537
    Abstract: A centralizer includes one or more centralizer fins radially extending from a body of the centralizer. The centralizer fins may include one or more chambers extending through the outer surfaces of the centralizer fins. The one or more chambers may change shape in response to a compression force being applied to the centralizer fins to cause the centralizer fins to deform. The centralizer fins may be deformed for installation of the centralizer in a drill collar. The centralizer may also include a split-ring clamp for coupling the centralizer to a drilling tool positioned in a through-bore of the centralizer body. The split-ring clamp may apply a load on the drilling tool in response to an end cap being torqued to an end portion of the centralizer body.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 23, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Benjamin Scott Riley, Daniel Patrick Carter, Anup Sona
  • Patent number: 9494019
    Abstract: Disclosed herein is a tubing string anchor for resisting angular rotation of the tubing string, as when undergoing pumping through the string. The anchor includes a plurality of anchoring members each rotatable about a fulcrum between a locking position and a non-locking position. The anchor housing has a groove formed between adjacent anchoring members through which a string may be run to access below the anchor when the anchor is installed.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: November 15, 2016
    Assignee: EVOLUTION OIL TOOLS INC.
    Inventors: Shaun Arthur Wold, Michael John Derkach
  • Patent number: 9010418
    Abstract: A polymeric rod guide for a sucker rod, said polymeric rod guide having a body surrounding and coaxial with the sucker rod and molded in fixed contact with the rod. The body having a polygonal cross-section and a plurality of blades longitudinally disposed and extending from the body, each blade having a pair of planar longitudinal side walls and an exterior longitudinal edge, each of said blades having a first blade face disposed between a first terminal end of the blade and the exterior longitudinal edge and a second blade face disposed between a second terminal end of the blade and the exterior longitudinal edge, and an area of the body between the longitudinal side wall of a first blade and the longitudinal side wall of an adjacent second blade defines a trough having a plurality of planar surfaces.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: April 21, 2015
    Assignee: Tenaris Connections Limited
    Inventors: Matias Pereyra, Alejandro Levrino, Bernardo Bouillard
  • Patent number: 8967247
    Abstract: A multi-tasking downhole rod guide for centralizing a downhole pump rod production tubing within production tubing, while simultaneously reducing abrasion and deterioration of the production tubing and engendering auxiliary pump-boosting functions. The rod guide is configured with an elongate helix having a continuous trough-like channel through which hydrocarbons flow upwardly under high pressure. As the pressurized hydrocarbons flow through a succession of plates at each equidistant helical level, the elongate helix rotates synchronously with the upwardly flowing hydrocarbons within the production tubing string.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: March 3, 2015
    Inventor: Douglas Ray Dickinson
  • Patent number: 8919436
    Abstract: A wireline standoff that may ameliorate the effects of wireline cable differential sticking, wireline cable key seating, and high cable drags by reducing or eliminating contact of the wireline cable with the borehole wall during the logging operation. An embodiment includes a wireline standoff. The wireline standoff may comprise a pair of opposing assemblies. The opposing assemblies may each comprise a half shell, a cable insert configured to be disposed in the half shell, and external fins coupled to the half shell. The wireline standoff may further comprise one or more fasteners configured to couple the opposing assemblies to one another.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: December 30, 2014
    Inventors: Guy Wheater, Stuart Huyton
  • Patent number: 8662186
    Abstract: A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: March 4, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Jorge Robles
  • Publication number: 20140027107
    Abstract: A continuous rod centralizer has a cylindrical centralizer body with a first end, a second end, an interior surface defining a bore which receives the continuous rod, and vanes extending radially from the exterior surface. A first rod clamp clamps onto the continuous rod at the first end of the body to confine movement of the body along the continuous rod in a first direction. A second rod clamp clamps onto the continuous rod at the second end of the body to confine movement of the body along the continuous rod in a second direction.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 30, 2014
    Inventors: Gerald L. BINETRUY, Mark J. BINETRUY
  • Patent number: 8443882
    Abstract: A tubular centralizer is secured to the tubular for run in. The profile for run in is small so that damage to the centralizer is minimized during run in. When the string is in position the centralizer is actuated to change shape or volume to engage the surrounding borehole to centralize the tubular for subsequent operations such as cementing or in the case of screens for gravel packing. The centralizer can be a shape memory material that is initially compressed at above its transition temperature to hold the smaller shape. At the desired location after run in it is brought above the transition temperature and changes back to the original shape or volume to centralize the tubular string. The structure can be spaced ring segments or a cohesive ring structure with an undulating profile or radiating blades to create flow spaces in the annulus where it is deployed for flow of a sealing material or gravel, for example.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 21, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Jason J. Barnard, Donald N. Horner, Michael H. Johnson
  • Patent number: 8442769
    Abstract: Various methods are disclosed, comprising obtaining a plurality of raw depth measurements for a wellbore; obtaining survey data about a bottom hole assembly; obtaining depth compensation information; calculating a plurality of compensated depth measurements from the raw depth measurements and the depth compensation information and one or more additional corrections for residual pipe compliance, tide, and rig heave; calculating sag angle and correcting the survey data with the sag angle; determining a high fidelity wellbore trajectory from the compensated depth measurements and the survey data; and then employing the high fidelity wellbore trajectory in various drilling, formation evaluation, and production and reservoir analysis applications. Depth compensation information may comprise at least one of weight on bit, a friction factor, temperature profile, borehole profile, drill string mechanical properties, hookload, and drilling fluid property. The surveys may include both static and continuous surveys.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: May 14, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Wayne J. Phillips, Georgiy Bordakov, Alexander Kostin, Shyam Mehta, Denis Heliot, John C. Rasmus
  • Publication number: 20130098601
    Abstract: A polymeric rod guide for a sucker rod, said polymeric rod guide having a body surrounding and coaxial with the sucker rod and molded in fixed contact with the rod. The body having a polygonal cross-section and a plurality of blades longitudinally disposed and extending from the body, each blade having a pair of planar longitudinal side walls and an exterior longitudinal edge, each of said blades having a first blade face disposed between a first terminal end of the blade and the exterior longitudinal edge and a second blade face disposed between a second terminal end of the blade and the exterior longitudinal edge, and an area of the body between the longitudinal side wall of a first blade and the longitudinal side wall of an adjacent second blade defines a trough having a plurality of planar surfaces.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 25, 2013
    Inventors: Matias Pereyra, Alejandro Levrino, Bernardo Bouillard
  • Publication number: 20120292021
    Abstract: A sucker rod guide includes a pair of vanes, offset from one another by 180°, with each vane wrapping approximately 180° around the rod guide. The vanes wrap around the body of the guide, and are neither spiral nor helical because the surfaces of the vanes extending radially outwardly from the body of the rod guide define two dimensional planar surfaces, i.e. flat planes. The vane thickness varies from a maximum at each end of the vane to a minimum at a midway point along the vane. This shape assists in moving fluid up the production tubing when the guide is applied to a rotary system, such as a progressive cavity pump. This shape also enhances the erodable volume of the vanes at the extremities, while providing a less inhibiting path for the flow of fluid in reciprocating applications.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 22, 2012
    Inventor: Daryl Kaltwasser
  • Patent number: 8245777
    Abstract: A tubing centralizing apparatus has a centralizer body including opposing end portions, a central passage extending through the opposing end portions, and a plurality of apertures extending therethrough between its exterior side surface and the central passage. The apertures are uniformly spaced about a longitudinal axis of the central passage. Bow springs are mounted on the exterior side surface of the centralizer body such that a central portion of each one of the bow springs is bowed away from the centralizer body. The tubing sub is slideably positioned within the central passage of the centralizer body. One of the tubing joint collars is attached to each end portion of the tubing sub. The tubing joint collars and the centralizer body are jointly configured such that the tubing joint collars engage the centralizer body for constraining the tubing sub within the central passage of the centralizer body.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: August 21, 2012
    Inventor: Stephen Randall Garner
  • Patent number: 8225868
    Abstract: An interchangeable sleeve for a downhole tool includes a substantially cylindrical body configured to circumferentially engage the downhole tool, a blade extending radially from the body, and a transducer disposed within the blade. A drilling assembly includes a drill collar, an interchangeable blade configured to couple to the drill collar, and a transducer disposed within the blade. A size of the blade and a size of the transducer are selected based on a diameter of a borehole in which the downhole tool is to be used. A method of manufacturing an interchangeable sleeve for a downhole tool includes forming a blade on a body of the sleeve such that the blade extends radially from the body, disposing a transducer within the blade, and configuring the sleeve to circumferentially engage the downhole tool.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: July 24, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Jan Stefan Morley, Alain Dumont
  • Publication number: 20120168149
    Abstract: A rod guide receiver is molded directly onto the sucker rod and a rod guide or spinner is then molded directly onto the rod guide receiver, the spinner having a plurality of blades or fins molded as an integral part of a spinner body that is free to turn about the rod guide receiver. The rod guide receiver serves in the manner of a bearing race, having a pair of opposing stops to retain the spinner subsequently molded thereon. The spinner may also be referred to herein as a centralizing sleeve. The rod guide receiver and the spinner are both formed of polymeric materials, but of materials different from one another so that the rod guide is free to rotate about the rod guide receiver. Further, the vanes of the rod guide are formed in a zig-zag pattern to enhance the strength and effectiveness of the vanes in bearing against the inside surface of the well tubing.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 5, 2012
    Inventor: Daryl Kaltwasser
  • Patent number: 8141629
    Abstract: Centralizers including at least a portion formed of a first material and at least one end band secured to the first material and formed of a second material. The end band being installed to resist detachment from the portion formed of the first material.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 27, 2012
    Assignee: Tesco Corporation
    Inventor: Per G. Angman
  • Patent number: 7854259
    Abstract: A rod guide is provided for use in a rotating rod string (12) for powering a progressive cavity pump (14) for pumping downhole fluids through tubing (16) to the surface. The rod guide includes a rotor sleeve (20) secured to the rod string. The rotor sleeve includes a plurality of axially spaced reduced diameter body portions 22, and a plurality of axially spaced enlarged diameter ridge portions 24. Upper and lower stop surfaces 26, 28 on the ridge portions permit axial movement of the stator sleeve with respect to the rotor sleeve. A stator sleeve (40) positioned over the rotor sleeve, and has a sleeve body (42) with a generally circular configuration with opposing circumferential ends (44, 46) spreadable to position the stator sleeve about the rotor sleeve. A plurality of ribs (48) extend outward from the stator sleeve body.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: December 21, 2010
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventor: Matthew S. Davison
  • Patent number: 7845373
    Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: December 7, 2010
    Inventors: Cole J. Hickman, James H. Cannon
  • Patent number: 7793717
    Abstract: A rod guide is provided for use in a rotating rod string (12) for powering a progressive cavity pump (14) for pumping downhole fluids through tubing (16) to the surface. The rod guide includes a rotor sleeve (20) secured to the rod string and having a plurality of circumferentially spaced exterior surfaces (22) each positioned substantially along an exterior of a cylinder. The rotor sleeve also includes one or more stop surfaces (24) for limiting axial movement of a stator sleeve (40) with respect to the rotor sleeve, and two or more axially extending cavities (26) each extending from a bottommost surface to an opposing uppermost surface of the rotor sleeve and passing through the one or more stop surfaces. Stator sleeve (40) surrounds the rotor sleeve and has an interior surface (42) for engaging the plurality of circumferentially spaced exterior surfaces of the rotor sleeve, and a plurality of ribs (44) extending outward from two or more outer cylindrical surface portions (44) of the stator sleeve.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 14, 2010
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventor: Matthew S. Davison
  • Patent number: 7721800
    Abstract: There is disclosed a flow control mechanism for a downhole tool and a downhole tool incorporating the flow control mechanism. In one embodiment, a flow control mechanism (202) is disclosed for controlling a centralizer (200). The flow control mechanism (202) comprises a body (212) defining a fluid chamber (234); an inlet flow path (292) for fluid flow into the chamber (234); at least one tool flow path (294) for fluid flow between the chamber (234) and at least part of the downhole tool (200); an exhaust flow path (297) for fluid flow from the chamber (234) to a fluid exhaust (240); and control means including a control member (218) mounted for movement within the chamber (234) for controlling flow into and out of the chamber (234) along the inlet flow path (292), the at least one tool flow path (294), and the exhaust flow path (297). The mechanism (202) controls flow to a piston (214) of the centralizer (200) for centralizing the centralizer (200) within, for example, a tubular (211) in the bore hole.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: May 25, 2010
    Assignee: Driftco Limited
    Inventors: Jonathan Symons, Gordon Heselton
  • Patent number: 7677272
    Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: March 16, 2010
    Inventors: Cole J. Hickman, James H. Cannon
  • Patent number: 7647963
    Abstract: A device for coupling a driver system to a downhole string of sucker rods in a petroleum well employs a polish rod construction in which the polish rod is strengthened by an attached sleeve providing a transverse should in a predetermined plane. The sleeve is shrink fit in place and mechanically adhered to withstand the stresses and shocks encountered in long-term cyclic operation. The device provides specific benefits for an improved sucker rod connection which prestresses the sucker rod pin ends and the coupling in a fashion to resist the development of microcracks and fatigue failures.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: January 19, 2010
    Inventor: Kenneth J. Carstensen
  • Patent number: 7635031
    Abstract: A fluid powered tool is disclosed for assembling a two piece guide on a sucker rod at a well site. The tool includes a table (26) laterally moveable with respect to the sucker rod and supporting a fluid powered cylinder (28), a bottom plate (42) for engaging the rod guide, and a top plate (56) also for engaging the rod guide. At least one vertical guide (30) is provided for guiding vertical movement of at least one of the bottom plate and top plate, and a horizontal rail (32) is provided for guiding lateral movement of the table. Each of the top plate and the bottom plate include a recess for receiving the sucker rod when engaged by the guide. The fluid powered cylinder moves the bottom plate with respect to the top plate to assembly the guide on the rod.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: December 22, 2009
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventor: Matthew S. Davison
  • Publication number: 20090272519
    Abstract: A elongated plunger assembly for pressurized, conduit-enclosed travel utilized in recovery of hydrocarbon deposits in a ground penetrating oil or gas well. The plunger comprises an elongated mandrel, a plurality of radially movable curvilinear wear pads circumferentially disposed adjacent each end of the elongated mandrel, a pad-edge retaining housing extending on at least one end of the elongated mandrel to enclosably retain the longitudinally distal end of a circumferential array of wear pads onto the mandrel, and a centrally disposed wear pad securement ring arrangement to permit release of a worn wear pad, replacement of the worn wear pad at an inner longitudinal edge thereof, thus to permit simple field-accessable removal and replacement of any particular “conduit-worn” “wear” pad from the mandrel of the plunger.
    Type: Application
    Filed: July 14, 2009
    Publication date: November 5, 2009
    Inventors: David A. Green, Robert E. Bender
  • Patent number: 7530371
    Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: May 12, 2009
    Inventors: Cole J. Hickman, James H. Cannon
  • Publication number: 20080271897
    Abstract: A fluid powered tool is disclosed for assembling a two piece guide on a sucker rod at a well site. The tool includes a table (26) laterally moveable with respect to the sucker rod and supporting a fluid powered cylinder (28), a bottom plate (42) for engaging the rod guide, and a top plate (56) also for engaging the rod guide. At least one vertical guide (30) is provided for guiding vertical movement of at least one of the bottom plate and top plate, and a horizontal rail (32) is provided for guiding lateral movement of the table. Each of the top plate and the bottom plate include a recess for receiving the sucker rod when engaged by the guide. The fluid powered cylinder moves the bottom plate with respect to the top plate to assembly the guide on the rod.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 6, 2008
    Inventor: Matthew S. Davison
  • Patent number: 7325619
    Abstract: A sucker rod guide installation device for installing a sucker rod guide on a sucker rod. The device having a rod positioner for positioning the sucker rod and guiding a portion of the sucker rod into the sucker rod guide. The sucker rod guide held in a holder, the holder having at least one releasable attachment for holding the sucker rod guide attached to the sucker rod guide holder during the installation process. Various safety devices are also provided.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: February 5, 2008
    Inventor: Bill Morrison
  • Patent number: 7255165
    Abstract: A field-installable rod guide for a rod moveable within an oilfield tubular having an interior tubular surface for driving a downhole pump to pump liquids to the surface through the oilfield tubular. The rod guide comprises a body including interfitting body members. An outer tapered surface on one body member is engaged by an inner taper-engagement surface on the other body member, to urge the body members toward a rod gripping position about the rod. The mechanism disclosed provides a particularly strong engagement with the rod, so that the rod guide may be used for either reciprocating or rotating rods. For rotating type rod guides, an outer sleeve may be included about the body.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: August 14, 2007
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventors: Gary E. Abdo, Tom Evans
  • Patent number: 7134455
    Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: November 14, 2006
    Inventors: Cole J. Hickman, James H. Cannon
  • Patent number: 7108063
    Abstract: Improved sucker rod joints for down hole petroleum pumping applications are provided within the form factor of standard API sucker rods, such that existing inventory in suitable condition is fully usable in more demanding applications. The pin ends are selected or processed such as to provide preselected axial distance between a flat pin end and at least one reference surface, such as a threaded region or reference shoulder or both. The coupler is dimensioned such that the pin ends are in abutment either with each other or with opposite sides of an intervening torque washer in the central region, when the connection is made to a selected level of thread engagement. Furthermore, the engagement is such as to put the pin ends in compression and the coextensive length of coupler in tension. This increases frictional restraints and locks the elements together to resist fatigue failure upon cycling and to insure together with an anaerobic adhesive sealant, against back threading.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: September 19, 2006
    Inventor: Kenneth J. Carstensen
  • Patent number: 7104318
    Abstract: A centralizer assembly for centralizing casing inside a riser includes a locking element to move generally radially outward from the casing toward the riser in response to a change in pressure in the annulus between the casing and the riser. The locking element may be a first wedge shaped element adapted for movement in a radial direction from the casing toward the riser and a second wedge shaped element adapted to move generally axially along the casing and adapted for engaging the first wedge shaped element in response to a pressure activated driver. The driver may be a rupture device that ruptures when the pressure in the annulus reaches a predetermined threshold. Ratchet teeth are included between the elements for engaging and locking the wedge shaped elements in position once driven by the driver.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: September 12, 2006
    Assignee: Plexus Ocean Systems, Ltd.
    Inventor: Craig Hendrie
  • Patent number: 6814146
    Abstract: Apparatus and method for electrically heating a segment of a subsea pipeline are provided. The annulus between the pipes electrically isolates the pipes, but at the ends of the segment the concentric pipes are electrically connected. The inner pipe may be thermally insulated. Electrically insulating water stops are provided to act as flood control barriers in the event the outer pipe is breached. Collars on seals around the water stops may help avoid electrical shorts and packets of super-absorbent may be in place to further reduce the risk of electrical faults.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: November 9, 2004
    Assignee: Shell Oil Company
    Inventors: Ronald Marshall Bass, Byron Lee Newberry, Carl Gottlieb Langner
  • Patent number: 6776232
    Abstract: An insert rod guide has an elongated cylindrical member with an externally threaded first or upper end of a first diameter and an internally threaded lower or second end of a larger diameter with an axial bore extending between the ends. Intermediate the ends of the member is a truncated conical shoulder with a plurality of regularly spaced bores angled outwardly from the axial bore through the shoulder. An annular sand shield is mounted externally on the member for axial movement therealong. The sand shield has one face which is tapered to mate with the shoulder. An annular hardened insert is mounted on the upper end of the member and is held in place by retainer collar.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: August 17, 2004
    Inventor: Milton Skillman
  • Patent number: 6595284
    Abstract: A one-piece wire guard device formed of non-metallic material for use in wells includes an inner ring having a split therein defining an opening and having a portion of reduced thickness defining a hinge is disclosed. Arcuate sections are disposed concentrically outwardly of the inner ring and are connected to the latter by ribs. The ribs, arcuate sections and inner ring cooperate with each other to define openings for accommodating electric wires, ropes and the like therethrough. A guard device may be flexed about its hinge from a normally closed condition to an open position to permit a drop pipe to be inserted through the opening defined by the split. Releasably locking means, including an elongated locking element, lock the guard device upon the drop pipe. Spacer tabs extend outwardly from the arcuate sections and engage a well casing to space the drop pipe from the casing and thereby prevent damage to the drop pipe, electrical wires, safety ropes and the like extending through the guard device.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: July 22, 2003
    Inventor: Emery W. Davis
  • Patent number: 6457519
    Abstract: A centralizer for laterally positioning an instrument in an opening larger in diameter than the diameter of an opening through which the centralizer can freely pass. The centralizer includes spring blades affixed at one end to an outer surface of the instrument and extending axially to a stop collar rotatably positioned on the outer surface of the instrument. A latch is operatively coupled to the stop collar and is adapted to enable rotation of the stop collar about the instrument upon release of the latch.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: October 1, 2002
    Assignee: Antelope Oil Tool and Manufacturing Company, Inc.
    Inventor: Jean P. Buytaert
  • Patent number: 6352107
    Abstract: An elongated pump rod or sinkerbar for use in a pump rod string for a downhole reciprocating well pump is provided with an elongated sleeve of high density or ultra high density polyethylene over a major portion of the length of the sinkerbar to minimize wear on the sinkerbar and a well tubing string as a consequence of deflection of the sinkerbar into engagement width the tubing string and to minimize frictional drag on the pump actuating mechanism as a result of such engagement. The polyethylene sleeve may be assembled over the sinkerbar by apparatus including an elongated hydraulic actuator which may be configured to push a sinkerbar into the sleeve while the sleeve is held stationary within a support tube, or by holding the sinkerbar stationary on a support and pulling the sleeve over the sinkerbar and from a continuous length of tubing from which the sleeve is formed.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: March 5, 2002
    Assignee: Allen & Bennett, Inc.
    Inventors: Donald W. Bennett, Johnny B. Fayo, Scott W. Long
  • Publication number: 20020023782
    Abstract: The friction-reducing drill pipe component in the form of a sub (10) is adapted to form part of a drill string. The sub (10) comprises a tubular mandrel (12) having first and second ends for connection to adjacent components of the drill string. A sleeve (18) is mounted on the mandrel (12), and first and second stops on the mandrel (16, 20) restrain the sleeve (18) against axial movement relative to the mandrel (12). One of the stops (20) is removable or retractable to permit the sleeve (18) to be removed over the first end of the mandrel.
    Type: Application
    Filed: February 27, 1998
    Publication date: February 28, 2002
    Inventors: ROBERT PATRICK APPLETON, GHOLAM HOSSEIN RASTEGAR
  • Publication number: 20010032722
    Abstract: A stand-off device for tubulars comprising a sleeve adapted to fit around a tubular, the sleeve comprising an outer surface and a plurality of blades extending along the outer surface of the sleeve, the blades comprising a bearing surface, wherein the bearing surface of each blade is curved longitudinally. The device may be metallic or non-metallic. Non-metallic devices further comprise a protective coating to inhibit abrasion, corrosion, sparking, and electrolysis. The stand-off device is particularly suitable for use with casing in deviated wellbores.
    Type: Application
    Filed: May 23, 2001
    Publication date: October 25, 2001
    Inventor: Benny Alan Eaton
  • Patent number: 6260617
    Abstract: A method and apparatus which inserts and withdraws tubing from pipes without bending or kinking the tubing. The method and apparatus may be employed to insert and withdraw tubing to depths greater than ever possible before. The method involves using skate apparatuses to reduce coiling and friction of the tube. Advantageously, the apparatus is portable, easily handled, and adaptable to handle tubing of differing diameters.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: July 17, 2001
    Assignee: Superior Energy Services, L.L.C.
    Inventors: Benton F. Baugh, James R. Crawford
  • Patent number: 6182754
    Abstract: A scraper apparatus for a reciprocating sucker rod for prevention of the wearing of grooves in well tubing. The scraper is formed by a body with two opposed spiral vanes extending 180 degrees around the body and defining flow channels positioned between the spiral vanes. The scraper is secured to the reciprocating sucker rod and is positioned within the well tubing. The well tubing has an inner circumference with the two opposed spiral vanes engaging 360 degrees of the inner circumference of the well tubing while enabling fluids to bypass the body through the flow channels.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: February 6, 2001
    Assignee: RG Industries Ltd.
    Inventor: Thomas Hubert Vermeeren