Expanded By Wedging Member Patents (Class 277/339)
  • Patent number: 10107065
    Abstract: A through-tubing annular isolation device includes a plurality of building elements tethered sequentially together such that a tubular form is achieved at a second energy condition and a dimensionally smaller form is achieved at a first energy condition. A method for isolating an annular space through-tubing.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: October 23, 2018
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Darin Duphorne, Erik Vilhelm Nordenstam
  • Patent number: 10100600
    Abstract: An expandable tool can be lowered in a contracted state into a subterranean well. The expandable tool includes a tool frame that is movable between a frame contracted position and a frame extended position, and a plurality of tool segments. The plurality of tool segments include a plurality of moveable tool segments and a plurality of stationary tool segments. An outer diameter of the expandable tool can be increased by moving each of the tool segments radially outward. The expandable tool can be rotated so that the plurality of moveable tool segments rotate relative to the tool frame and the plurality of stationary tool segments remain fixed relative to the tool frame. Applying axial force to the expandable tool will move moveable tool segments axially relative to the tool frame, and an axial length of the expandable tool is reduced until the expandable tool is in a final state.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: October 16, 2018
    Assignee: Saudi Arabian Oil Company
    Inventor: Rafael Adolfo Lastra
  • Patent number: 9506316
    Abstract: A composite frac plug (12) is formed of composite polymer materials, except for shear pins (52) and anchor cleats (96, 112) which are formed of metal. The frac plug (12) has an elastomeric ball seat (44) which sealing engages with a frac ball (18). A ratchet lock assembly (26) has a split ratchet ring (82) which moves over the mandrel (22) in a downward direction only, and prevents movement of the mandrel (22) downward within the ratchet ring (92). An anchor assembly (28) has slip bodies (92, 108) which are segmented and separately urge anchor cleats (96, 112) into the interior surface of a well casing (136).
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 29, 2016
    Assignee: DIAMONDBACK Industries, Inc.
    Inventors: Jimmy L Carr, Derrek D Drury, Robert C Andres, Trea H Baker
  • Patent number: 8955847
    Abstract: The present invention regards a sealing arrangement for a valve, comprising a valve element (3) provided with a sealing element (4), arranged to be abutting a valve seat (2) in a closed state of the valve. The valve element (3) comprises at least two parts, a first and second part (31,32), each comprising an abutting surface (310,320), which abutting surfaces (310,320) are arranged facing each other and to abut against corresponding sealing element surfaces (41,42) of the sealing element (4), and whereof at least one part (31) of the valve element (3) is being arranged to be moveable relative another part (32) of the valve element (3) and the at least one part (31) of the valve element (3) comprises a pressure surface (311) exposed to a surrounding fluid in a closed state of the valve giving pressure on the sealing element (4) responsive to the pressure in the surrounding fluid.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 17, 2015
    Assignee: Reelwell AS
    Inventors: Harald Syse, Stein Erik Meinseth
  • Publication number: 20140183824
    Abstract: A seal system selectively set between coaxial downhole tubulars seals between the tubulars; the system also locks the tubulars together to resist relative axial movement from thermal expansion. The seal system includes a seal element with a nose ring that couples a lock-down ring to both the inner and outer tubulars. Before inserting the seal system between the tubulars, the lock-down ring is disposed in a groove on the inner tubular. Setting the seal system drives a lower tip of the nose ring between the lock-down ring and inner tubular, thereby urging the lock-down ring radially outward. A portion of the lock-down ring remains in the groove, while an outer radial portion of the lock-down ring inserts into a profile on the outer tubular. Axial movement of a tubular transfers force to the other tubular through the lock-down ring, while a minimal amount of force transfers through the seal system.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: VETCO GRAY INC.
    Inventors: Daniel Caleb Benson, David Lawrence Ford
  • Patent number: 8746352
    Abstract: A seal assembly for use between wellbore tubulars employs an inner seal ring partially circumscribed by an outer seal ring. The seal rings are axially slidable with respect to one another and can be made from pliable inelastic materials such as graphite or a fluoropolymer. The seal rings contact one another along profiled surfaces that are angled such that by axially urging the seal rings towards one another produces a bulge in the seal assembly directed radially outwards and inwards. The bulging seal rings come into contact with opposing sides of the wellbore tubulars to define a sealing surface. Axial supports at opposing lateral ends of the seal rings maintain the seal between the tubulars.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: June 10, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Michael Shaw
  • Patent number: 8714243
    Abstract: An expansion tool for use in a wellbore includes an expansion surface made up of a concave portion, a convex portion and a straight section therebetween. The straight section is formed according to a formula Y=(1.26) (X)?0.13, where X is the wall thickness of a tubular and Y is the length of the straight section. The concave portion and the convex portion have an arc length extending the concave portion to a trailing edge of the tool. The concave and convex portions are radius-shaped. The arrangement of the shapes and their relation to each other reduces relatively high and low contact pressures and lessens the effects of axial bending in a tubular or a connection.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: May 6, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard W. DeLange, Scott H. Osburn, Varadaraju Gandikota, Ghazi J. Hashem
  • Patent number: 8567492
    Abstract: Embodiments of the present disclosure generally provide a packer for use within a conduit, such as casing, having non-extrusion rings. The non-extrusion ring is comprised of rigid segments, a support ring and an elastic matrix.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: October 29, 2013
    Inventor: Max White
  • Patent number: 8561995
    Abstract: A metal-to-metal seal is used to seal between two tubular members. In one embodiment, a metal-to-metal seal forms a seal in an annulus housing between an inner and outer diameter of tubular members of an adjustable casing sub. The seal can have an inner and an outer sealing ring, or more than one pair of inner and outer sealing rings, that can be set in place by a running tool. An energizing ring can have a tapered or bulbous surface, and can create a pre-load force against the sealing rings.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: October 22, 2013
    Assignee: Vetco Gray Inc.
    Inventor: Kenneth D. Thomson
  • Patent number: 8550178
    Abstract: An expandable packer features a sealing element in an exterior recess that is straddled by projections or bumps. Upon expansion the bumps move out against the borehole wall as an anchor support. Optionally, the bumps may be covered with a sealing material and may be constructed to assist in their radial movement to the borehole wall as a result of expansion particularly if the mandrel is expanded in compression. The bumps are not necessarily expanded with the swage and their radial growth can be induced from longitudinal shrinkage resulting from radial expansion.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: October 8, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Richard Y. Xu, Mark K. Adam
  • Publication number: 20130140775
    Abstract: A wellhead assembly having concentric tubulars and a seal assembly in an annulus between the tubulars. The seal assembly includes an upper portion having an annular body with a U-shaped cross section and a nose ring seal. The nose ring seal has a bellows like cross section and provides sealing in the annulus and exerts a lockdown force onto one of the tubulars. Metal inlays are provided on the outer edges of the folds in the bellows and a compressible medium is disposed between the folds.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 6, 2013
    Applicant: VETCO GRAY INC.
    Inventors: Jeffrey Allen Raynal, Daniel Caleb Benson, David Lawrence Ford
  • Patent number: 8403036
    Abstract: An apparatus for use in a wellbore is provided. The apparatus comprises a mandrel, a sealing element carried on the mandrel, the sealing element being radially expandable from a first run-in diameter to a second set diameter in response to application of axial force on the sealing element, and an extrusion limiting assembly carried on the mandrel and proximate the sealing element. The extrusion limiting assembly comprises a plurality of separate segments and a first circumferential band that retains the plurality of segments in a ring shape and substantially covers an outer circumferential surface of the plurality of segments while in a run-in condition of the apparatus.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 26, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Adam K. Neer, Emil Havelka, Lloyd Crockford
  • Patent number: 8393400
    Abstract: A wellhead or Christmas tree seal assembly that forms a metal-to-metal seal between inner and outer wellhead or Christmas tree members. U-shaped metal seals having legs that face in opposite directions, are bonded to a wiping element. During installation of the seal assembly, the ends of the seal legs seal against the wellhead members and the wiping element compensates for defects on the surfaces of the wellhead members. The wiping element can be of an elastomer, metallic, or intercalated graphite material.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: March 12, 2013
    Assignee: Vetco Gray Inc.
    Inventor: Kevin G. Buckle
  • Patent number: 8381809
    Abstract: Embodiments of the present disclosure generally provide a packer for use within a conduit, such as casing, having a non-extrusion ring. The non-extrusion ring is comprised of hard segments and an elastic matrix.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 26, 2013
    Inventor: Max White
  • Patent number: 8376057
    Abstract: A wellhead assembly including a wellhead housing. The wellhead housing comprises a throughbore having a recessed sealing area and a tubing hanger positioned in the throughbore. A seal is positioned between the wellhead housing and the tubing hanger, the seal being positioned so as to form a gap between the seal and the wellhead housing. The wellhead assembly can further include a seal energizer capable of moving relative to the seal in a manner that forces the seal against the wellhead housing to bridge the gap. A method of installing a tubing hanger into a throughbore of a wellhead housing is also disclosed.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: February 19, 2013
    Assignee: Aker Subsea Inc.
    Inventors: Andy Dyson, Charles Li, Oystein Mogedal, Paulo Cezar Silva Paulo, Nick Newlands
  • Publication number: 20120312556
    Abstract: An annular sealing element to seal between metal surfaces for use in flanges, joints, packers and the like, located in oil and gas exploration and production equipment. The sealing element has inner and outer metal deformable surfaces joined at ends, defining an interior volume which is entirely filled with a plastic deformable material. The surfaces are arranged such that on compression of the element from the ends, the element will deform in a controlled manner on a cantilever principle. The volume of filler and the interior volume remain substantially equal during compression so that delamination does not occur. Thus the sealing element provides a seal combining the flexibility of elastomer seals with the integrity of a metal to metal seal.
    Type: Application
    Filed: May 25, 2012
    Publication date: December 13, 2012
    Applicant: CALEDYNE LIMITED
    Inventors: David Martin, Ewan Sinclair
  • Patent number: 8276678
    Abstract: A support assembly for a deformable sealing element of a downhole tool, such as a packer or a bridge plug. The assembly comprises a first and a second support device. The first and the second support devices each comprise at least one support member which support member includes a plurality of segments located on an outer surface thereof, the segments being arranged such that when moved radially outwardly they maintain a continuous surface abutting the respective end of the sealing element. A downhole tool having a deformable sealing element and including a support assembly for a deformable sealing element is described.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: October 2, 2012
    Assignee: Red Spider Technology Limited
    Inventors: William Stephen Burnett, Michael Adam Reid
  • Patent number: 8226089
    Abstract: A seal assembly includes a tubular member having a longitudinal axis and a tubular member seal profile. A metal seal ring having a proximal base and a distal end has a seal ring seal profile between the proximal base and distal end that contacts the tubular member seal profile. A distal annular recess is in one of the seal profiles, the distal annular recess being spaced axially from the distal end of the seal ring, defining a seal surface between the distal end of the seal ring and the distal annular recess that engages a seal surface of the tubular member seal profile. The contacting portions of the seal surfaces form a metal-to-metal seal area. A proximal annular recess in one of the seal profiles is spaced axially from the distal annular recess, defining a support area axially spaced from the metal-to-metal seal area.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: July 24, 2012
    Assignee: Vetco Gray Inc.
    Inventors: Joseph W. Pallini, Jr., Rockford D. Lyle, Chii Ren Lin
  • Patent number: 8205890
    Abstract: A high pressure metal-to-metal seal utilizes an expandable metal seal element able to withstand caustic fluids, high pressure, and high temperature. The metal-to-metal seal assembly is resilient for repeatable sealing and comprises an energizing metal ring and a metal sealing ring. Engagement of these two rings expands surfaces of the metal sealing ring to create inner and/or outer metal-to-metal seals.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: June 26, 2012
    Assignee: Worldwide Oilfield Machine, Inc.
    Inventor: Alagarsamy Sundararajan
  • Publication number: 20120126482
    Abstract: Device for sealing a leakage in a well tube, comprising a sealing ring and elements for forcing the sealing ring into sealing engagement with the wall of the tube. A power device being operatively connected to the elements. The sealing ring having beveled ends which are juxtaposed with a pair of mating conical rings. A cylinder-piston device engages the conical rings to force them into expanding engagement with the sealing ring.
    Type: Application
    Filed: June 10, 2010
    Publication date: May 24, 2012
    Applicant: INTERWELL TECHNOLOGY AS
    Inventors: Espen Hiorth, Terje Stormo
  • Patent number: 8167033
    Abstract: Embodiments of the present disclosure generally provide a packer for use within a conduit, such as casing, having a non-extrusion ring. The non-extrusion ring is comprised of hard segments and an elastic matrix.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: May 1, 2012
    Inventor: Max White
  • Patent number: 8123226
    Abstract: A seal assembly for sealing an annular space between an inner and an outer pipe in a double-walled subsea pipeline which seal assembly comprises an annular member (1) and moveable blocking means (2, 3) and: (a) under normal operating conditions is in a non-sealing position which allows the passage of a gas through said seal assembly; and (b) is actuatable from a non-sealing position to a sealing position in response to the entry of liquid into said annular space.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: February 28, 2012
    Assignees: Technip France SA, Technip Offshore UK Limited
    Inventors: Michael Antoine Joseph Caroline Bell, Sylvain Denniel, David Brocklebank
  • Patent number: 8096560
    Abstract: A high pressure seal assembly configured for sealing contact with an opposing surface. The seal assembly comprises an annular seal body with a sealing surface on one side of the seal body. An end of the sealing surface includes a sealing face for sealing contact with the opposing surface. The sealing surface also includes at least one support point that contacts the opposing surface when the seal is placed in sealing contact. Strategically positioning the support point on the sealing surface selectively adjusts the sealing contact stress between the sealing face and the opposing surface.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 17, 2012
    Assignee: Vetco Gray Inc.
    Inventors: Joseph W. Pallini, Jr., Rockford D. Lyle, Chii-Ren Lin
  • Patent number: 7971640
    Abstract: The invention refers to a device for sealing an annular space formed between an outer cylindrical element (4) having an end closure (16) and an inner pipe (1) extending within the outer element and having a free end. The invention incorporates a packer element (2) being slidably disposed around said pipe (1), an actuation element (6) adapted for telescopic assembly around the outer surface of the pipe (1) and slidable from a first position to a second position, a conical ring (12) adapted for installation on the pipe (1), where the actuation element (6) comprises an abutment element (10) designed for abutment against said packer (2), and an actuation pipe (8) extending beyond the pipe (1) first end when the actuation element (6) is in said first position. The invention also refers to a method for sealing the annular space.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: July 5, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Rune Freyer
  • Patent number: 7963322
    Abstract: Devices and methods for setting a packer inside a wellbore with little appreciable reduction of the useable area of the wellbore. The outer casing or liner of the wellbore contains one or more integrated casing coupler joints having an increased diameter chamber portion. A large bore packing element is carried within the increased diameter chamber portion. The packing element may be selectively actuated to form a seal against an interior tubular member. Because the packing element is located within the chamber portion of the casing coupler, the packer may be set while saving useable cross-sectional area within the casing.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: June 21, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Bennett M. Richard, Edward O'Malley, Yang Xu, Peter Fay, Larry Urban
  • Patent number: 7905280
    Abstract: A self adjusting excluder sub includes a first subassembly; a second subassembly with respect to which the first subassembly is axially movable; and a support disposed at the second subassembly and when actuated being resiliently disposed against the first subassembly while being laterally movable relative to the first and second subassemblies jointly and method.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: March 15, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: Aubrey C. Mills
  • Patent number: 7905492
    Abstract: A seal and/or anchoring arrangement includes a first perimetrically closed wedge, a second perimetrically closed wedge. An actuator is in operable communication with one of the first and second wedges. A frustoconical surface is present at a radially inwardly most located surface of the first and second wedges. A and method is included.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: March 15, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: James C. Doane
  • Patent number: 7614447
    Abstract: A bi-directional metal seal is energized and un-energized by a rolling action that takes place between radiused seal lips. The seal forms an assembly with upper and lower energizing rings. The rings have external grooves for engaging hook ends on the inner surfaces of the seal lips in a nesting arrangement when the seal is in the un-energized position. When the upper ring is pulled upward, the seal is un-energized and does not contact the adjacent conductors or wellhead members. When the upper ring is forced downward, the hooks ends of the seal are forced out of the grooves causing the seal lips to roll around in a radial outward direction, rather than stretch, and expand against the seal's outer diameter. This energizing process also causes the seal to become smaller on the seal's inner diameter, and thus forms a pressure-assist, metal-to-metal seal with the adjacent conductors.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: November 10, 2009
    Assignee: Vetco Gray Inc.
    Inventor: Charles E. Jennings
  • Patent number: 7552766
    Abstract: A device for sealing and anchoring within a tubular member. The device comprises a top swage member disposed within the tubular member, with the top swage member having a longitudinal center of axis. Also included is a first sealing member disposed about the top swage member, with the first sealing member containing a first plurality of circumferential ribs disposed about the first sealing member, The device may also include a second sealing member that is attached to the first sealing member, with the second sealing member containing a second plurality of circumferential ribs disposed about the second sealing member. A bottom swage member is disposed within the second sealing member, with the bottom swage member having a longitudinal center of axis. The device further comprises a setting apparatus for driving the top swage longitudinally downward relative to the top swage's longitudinal center axis and for driving the bottom swage longitudinally upward relative to the bottom swage's center axis.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: June 30, 2009
    Assignee: Owen Oil Tools LP
    Inventor: Michael J. Gazewood
  • Patent number: 7469750
    Abstract: In one aspect, the present invention provides a sealing apparatus for use in a tubular member. In one embodiment, the sealing apparatus includes an expandable sleeve and an expandable a toroidal/ring-shaped seal. The seal seats within a circumferential saddle or groove formed in the sleeve. An exemplary seal has an enlarged diameter portion and presents a radially outward sealing surface. During expansion, the enlarged diameter portion is compressed against the tubular member but, at least initially, the remainder of the sealing surface is not compressed. Thus, the pressure associated with the compression is focused on the limited contact area between the seal and the tubular. Continued expansion can increase the contact pressure and/or the amount of contact area. In one arrangement, the seal is configured to provide a gas tight seal.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: December 30, 2008
    Assignee: Owen Oil Tools LP
    Inventor: Jimmy L. Carr
  • Publication number: 20080308283
    Abstract: An annular packer device, wherein the annular packer is expandable in an annulus between an inner body and an outer boundary, and wherein the annular packer is sealingly movable along at least one of the inner body and the outer boundary.
    Type: Application
    Filed: April 28, 2006
    Publication date: December 18, 2008
    Inventor: Rune Freyer
  • Patent number: 7434617
    Abstract: A cup tool for use with a high-pressure mandrel of a wellhead isolation tool has a three-part packoff assembly that slides over a cup tool tube from an unset position to a set position. The three-part pack off assembly includes an elastomeric cup, a rigid alignment ring located above the elastomeric cup and an elastomeric packoff element located above the rigid alignment ring. The rigid alignment ring helps ensure that the elastomeric cup remains correctly aligned in a casing or tubing that is not straight, is out of round or is washed, and helps ensure that the elastomeric packoff achieves a high-pressure seal in the set position, even under adverse downhole conditions.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: October 14, 2008
    Assignee: Stinger Wellhead Protection, Inc.
    Inventor: Danny Lee Artherholt
  • Patent number: 7434627
    Abstract: A system for facilitating the insertion of a tool into a wellbore, especially a non-vertical wellbore. In one embodiment a tool is fixable in a wellbore and includes centralizing, friction-reducing members that serve to keep the body of the tool off the walls of the wellbore. In another embodiment the tool includes a wiper ring that partially fills an annular area formed between the centered tool and the wellbore walls. The surface of the ring facing the upper end of the wellbore provides fluid resisting piston surface and permits the centered tool to be pumped down the wellbore more effectively.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: October 14, 2008
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Rocky A. Turley, John W. McKeachnie
  • Publication number: 20080237993
    Abstract: Disclosed herein is a biased actuator. The actuator includes, a reservoir, at least one piston in operable communication with the reservoir, at least one metal seal disposed about the at least one piston and in substantial sealing communication therewith, the at least one metal seal further being in substantial sealing communication with the reservoir and a biasing system in operable communication with both the reservoir and the at least one piston.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Darren E. Bane, David Z. Anderson
  • Patent number: 7228896
    Abstract: A device for sealing and anchoring within a tubular member. The device comprises a top swage member disposed within the tubular member, with the top swage member having a longitudinal center of axis. Also included is a first sealing member disposed about the top swage member, with the first sealing member containing a first plurality of circumferential ribs disposed about the first sealing member. The device may also include a second sealing member that is attached to the first sealing member, with the second sealing member containing a second plurality of circumferential ribs disposed about the second sealing member. A bottom swage member is disposed within the second sealing member, with the bottom swage member having a longitudinal center of axis. The device further comprises a setting apparatus for driving the top swage longitudinally downward relative to the top swage's longitudinal center axis and for driving the bottom swage longitudinally upward relative to the bottom swage's center axis.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: June 12, 2007
    Assignee: Core Laboratories LP
    Inventor: Michael J. Gazewood
  • Patent number: 7165622
    Abstract: A packer, and operation of the same, which forms elastomeric seals and non-elastomeric seals. The packer may be constructed from a non-elastomeric tubular core having a frustoconical shaped inner diameter. The outer diameter of the core may be substantially smooth and carry one or more elastomeric sealing elements. The packer is set by causing the diametrical expansion of the tubular core. The construction of the tubular core is preferably such that its diametrical expansion causes the formation of radial raised portions (upsets) on the outer surface. These raised portions form the non-elastomeric seals and also prevent extrusion of the elastomeric sealing elements.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: January 23, 2007
    Assignee: Weatherford/Lamb, Inc.
    Inventors: David Eugene Hirth, Tarald Gudmestad
  • Patent number: 7011312
    Abstract: To provide a novel gland packing and a sealing apparatus comprising this, wherein the gland packing displays high and stable sealability for a stem and an inner wall surface of a stuffing box even for uses further requesting the movability (rotation and reciprocating movement), and further, gives excellent effects, such as decrease of moving resistance of a stem, shape stability, adaptability to a corroded and worn-out stem and stuffing box, function for receiving shafts, easiness of equipment, simplification of sealing structure, and compactness of a sealing apparatus.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: March 14, 2006
    Assignee: Nippon Valqua Industries, Ltd.
    Inventor: Makoto Ishida
  • Patent number: 6969070
    Abstract: The seal assembly 10 seal between a subsea wellhead housing 12 and a casing hanger 16. A metal seal body 20 includes fingers 32 and 34 and one or more elastomeric seals 38. An upper seal body 64 may include threads for engagement with the metal seal body. According the method of the invention, an initial elastomeric seal is first formed, and fluid pressure is applied from above to set the high temperature metal seal.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: November 29, 2005
    Assignee: Dril-Quip, Inc.
    Inventors: Larrey E. Reimert, Lionel J. Milberger
  • Patent number: 6962206
    Abstract: A packer, and operation of the same, which forms elastomeric seals and non-elastomeric seals. The packer may be constructed from a non-elastomeric tubular core having a frustoconical shaped inner diameter. The outer diameter of the core may be substantially smooth and carry one or more elastomeric sealing elements. The packer is set by causing the diametrical expansion of the tubular core. The construction of the tubular core is preferably such that its diametrical expansion causes the formation of radial raised portions (upsets) on the outer surface. These raised portions form the non-elastomeric seals and also prevent extrusion of the elastomeric sealing elements.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: November 8, 2005
    Assignee: Weatherford/Lamb, Inc.
    Inventors: David Eugene Hirth, Tarald Gudmestad
  • Patent number: 6769491
    Abstract: The present invention generally relates to a method and apparatus for sealing an annulus in a wellbore. In one aspect, the apparatus is an anchoring and sealing system for a downhole tool such as a bridge plug, packer, or frac-plug. The sealing system comprises of a sealing member disposed between a set of energizing rings, a set of expansion rings adjacent each cone, a set of support rings, and a set of slips. The components of the sealing system are arranged such that, when compressed, the sealing member may expand radially into contact with a casing. In another aspect, the apparatus the invention provides for an apparatus that is a downhole sealing tool.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: August 3, 2004
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Patrick J. Zimmerman, Rocky A. Turley, Rami Al Oudat
  • Patent number: 6746213
    Abstract: A pad plunger assembly, for use in gas well tubing, includes an elongated mandrel having opposite ends and a longitudinal axis extending between the opposite ends, a pair of opposite end members each attached to one of the opposite ends of the mandrel, and a seal-forming pad subassembly disposed about the mandrel and between the opposite end members thereon. The pad subassembly has an outer exterior surface of an annular concave configuration formed by opposite end portions of the outer exterior surface being disposed farther radially outwardly from the longitudinal axis of the mandrel than an intermediate portion of the outer exterior surface is disposed radially outwardly from the longitudinal axis of the mandrel such that a frictional seal which generates reduced friction is provided on the interior wall surface of the gas well tubing.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: June 8, 2004
    Inventor: Jeff L. Giacomino
  • Patent number: 6637750
    Abstract: A metallic sealing element comprises a generally tubular body having first and second opposed ends and a center section which is located between the first and second ends. In use the sealing element is compressible to bring the first and second ends towards one another to cause a center section to bulge transversely and sealingly engage a co-operating sealing surface.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 28, 2003
    Assignee: FMC Technologies, Inc.
    Inventor: Roberto L. Quoiani
  • Publication number: 20030079887
    Abstract: A sealing apparatus for sealing an annulus between a mandrel and an outer tubular. The apparatus comprises a top seal ring and a bottom seal ring separated by a double-ramped cylinder, all mounted on the mandrel and fit within the inner diameter of the outer tubular. The sealing apparatus is placed on the mandrel in running in position. The mandrel and sealing apparatus are then placed downhole in the outer tubular. Once at the desired location, a load is applied to the top seal ring. Once the load reaches a predetermined magnitude, the ramp slides under and expands the bottom seal ring to form a pressure-tight seal with the outer tubular. Additional load placed on the top seal ring causes the top seal ring to slide over the ramp and expand. As the top seal ring expands, the top seal ring forms a pressure-tight seal with the outer tubular.
    Type: Application
    Filed: October 28, 2002
    Publication date: May 1, 2003
    Applicant: Smith International, Inc.
    Inventors: Sam Sun Lloyd, Jim A. Simson, George Melenyzer
  • Patent number: 6406028
    Abstract: A seal stack includes one or more first seals that are adapted to seal in at least a first range of temperatures. The seal stack also includes a second seal that is adjacent to at least one of the first seals. The second seal is adapted to seal in at least a lower range of temperatures than the first range of temperatures.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: June 18, 2002
    Assignee: Schlumberger Technology Corporation
    Inventor: Dhani Kannan
  • Patent number: 6343791
    Abstract: The present invention generally provides a seal assembly, or seal array, having a seal body and one or more non-extrusion end rings to prevent or minimize extrusion of the seal body between either the packer assembly and the casing or between the packer assembly and the gauge ring used to energize the seal assembly. More particularly, the end ring of the present invention has discrete deformable portions, which may be integrally encapsulated within a resilient cover or which may be provided as separate end ring members. The discrete deformable portions may further be provided with a deformable hinge portion formed therebetween.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: February 5, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Steven L. Anyan, Thomas E. Johnson
  • Patent number: 6276690
    Abstract: A device for sealing and anchoring within a tubular member. The device includes a top swage member disposed within the tubular member, with the top swage member having a longitudinal center of axis. Also included is a first sealing member disposed about the top swage member, with the first sealing member containing a first plurality of circumferential ribs disposed about the first sealing member. The device may also include a second sealing member that is attached to the first sealing member, with the second sealing member containing a second plurality of circumferential ribs disposed about the second sealing member. A bottom swage member is disposed within the second sealing member, with the bottom swage member having a longitudinal center of axis. The device further includes a setting apparatus for driving the top swage longitudinally downward relative to the top swage's longitudinal center axis and for driving the bottom swage longitudinally upward relative to the bottom swage's center axis.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: August 21, 2001
    Inventor: Michael J. Gazewood
  • Patent number: 6203020
    Abstract: A sealing element system for a downhole packer reduces the tendency of the elements to extrude. Mechanical limits are provided to the amount of force that can be passed onto the uppermost and lowermost components of a sealing element system by providing a limit on the longitudinal compression available against a gauge ring. The gauge rings are roughened to also grab the uppermost and lowermost elements to fight the tendency to extrude. The uppermost and lowermost elements are configured with an external groove to control the way they deform into a sealing relationship with the tubing and casing so that extrusion into the gap is reduced.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: March 20, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Hector H. Mireles, Jr., James C. Doane
  • Patent number: 6176310
    Abstract: An assembly for sealing the annular space between the inner cylindrical surface of a tubular member and the outer surface of a cylindrical member having a separate upper and lower seal member each of which are sealably and translatably positioned on the cylindrical member outer cylindrical surface, each of the upper and lower seal members having a circumferentially outwardly displaceable sealing lip and including a tubular actuator positioned between the upper and lower seal members having end portions for radially outwardly displacing the upper and lower sealing lips and including a downwardly displaceable seal energizer for moving the upper seal member towards the lower seal member to cause the actuator to concomitantly, radially outwardly expand the circumferential sealing lips.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: January 23, 2001
    Assignee: ERC Industries, Inc.
    Inventors: Jerry D. Smith, Floyd J. Lane
  • Patent number: 5997003
    Abstract: Methods and apparatus are described for improved sealing across an annular space between facing sealing surfaces. Methods for mechanically setting and pressure energizing sealing ring assemblies are also described. In one aspect, several sealing ring assemblies are described, each of which include an outer seal body formed of elastically deformable metal and having an annular base with a pair of legs extending from the base to form a channel. A plurality of predominately non-deformable segments are positioned between the legs. The use of segments substantially reduces detrimental hoop stress which would hinder effective setting of a seal between the inner and outer members. In preferred embodiments, the legs and the segments each present raised portions which are offset from each other. The offset arrangement of the raised portions permit the ring assembly to be mechanically set by radial spring loading through elastic deformation of portions of the seal body.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 7, 1999
    Assignee: Cooper Cameron Corporation
    Inventor: Edwin C Turner
  • Patent number: 5961123
    Abstract: A sealing element for a packer or bridge plug or other downhole tool is illustrated which employs the use of back-up rings above and/or below a resilient seal. The various sleeves which are moved with respect to each other to compress the sealing element are made so that they are physically connected to the back-up rings. As a result, upon run-in, inadvertent compression of the seal is prevented and upon release, a physical separation occurs between the back-up ring and the sealing element, which allows the sealing element to expand and relax. Subsequent upward movement of the packer or bridge plug easily deflects the back-up ring since the sealing element is no longer in a compressed state directly underneath it. The packer then can easily be removed.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: October 5, 1999
    Assignee: Baker Hughes Incorporated
    Inventors: Gary Ingram, Jose Barragan