With Expanding Anchor Patents (Class 166/118)
  • Publication number: 20130126191
    Abstract: Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, and depressurizing the packers so as to permit movement of the mandrel within the borehole. A sampling method and apparatus that utilize one or more of the following to advantage is provided: restricting deformation of the packers during inflation using an annular bracing assembly; actively retracting the packers using ambient borehole pressure; and substantially centralizing the mandrel intermediate the packers so as to resist buckling of the mandrel.
    Type: Application
    Filed: August 22, 2012
    Publication date: May 23, 2013
    Inventors: William E. Brennan, III, Colin Longfield, Alexis Arzoumanidis, Allessandro Caccialupi
  • Publication number: 20130118751
    Abstract: A method described herein involves lowering a tool into a wellbore adjacent a subterranean formation; inflating a first packer on the tool to initiate a fracture of the formation; inflating second and third packers on the tool to seal an interval of the wellbore containing the fracture, the first packer being between the second and third packers; and pumping fluid into the interval to increase a pressure in the interval to propagate the fracture.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Inventor: Nathan Landsiedel
  • Publication number: 20130112398
    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: Application
    Filed: December 28, 2012
    Publication date: May 9, 2013
    Inventor: Max White
  • Patent number: 8434550
    Abstract: System, devices, and methods are described relating to the treatment (e.g., perforating, fracturing, foam stimulation, acid treatment, cement treatment, etc.) of well-bores (e.g., cased oil and/or gas wells). In at least one example, a method is provided for treatment of a region in a well, the method comprising: positioning, in a well-bore, a packer above the region of the well-bore, fixing, below the region, an expansion packer, treating the region, the treatment fixing the packer, moving the expansion packer, and moving the packer after the moving of the expansion packer.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: May 7, 2013
    Inventors: Dustin Howard, Phillip Mandrell, Marty Stromquist
  • Publication number: 20130081803
    Abstract: An apparatus including a downhole tool for conveyance in a wellbore extending into a subterranean formation. The downhole tool includes a feature to physically interface a sidewall of the wellbore, and first and second setting pistons each extendable from the downhole tool opposite the feature. The downhole tool also includes a rigid member spanning and extendable with the first and second setting pistons, wherein a length of the rigid member is variable.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Inventors: Chen Tao, Thomas W. Meyer
  • Patent number: 8408290
    Abstract: A downhole tool for use in a well has a mandrel with an expandable sealing element disposed thereabout. The mandrel has a head portion threadedly connected thereto. A shoulder in the head portion and an upper end of the mandrel define an annular space. A sleeve with a bore therethrough may be positioned in the annular space. The head portion may be removed and a solid plug installed so that it fits within the annular space and so that the downhole tool will act as a bridge plug. The downhole tool has slip rings made up of a plurality of individual slip segments that are adhesively bonded to one another at the sides thereof.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: April 2, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jesse C. Porter, William E. Standridge, Adam K. Neer, Tracy Martin, Kevin R. Manke
  • 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: 8403035
    Abstract: A sealing and/or anchoring element for use in pipelines. The sealing and/or anchoring element includes at least one helical element disposed around a string section, with the helical element being configured so as to be able to expand radially towards an inner wall of the pipeline as the circumferential diameter thereof is increased.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 26, 2013
    Assignee: I-Tec AS
    Inventors: Frank Akselberg, Per Olav Haughom
  • Publication number: 20130068448
    Abstract: Device for carrying a replacement safety valve in a well tube, with a straddle structure for placement inside a damaged “Down Hole Safety Valve” nipple seal area. It is comprising a pair of sealing assemblies (15, 16) to be activated upon setting of the device to seal said nipple seal area, and a locking dog assembly (17) for locking the device in the well tube, said elements being carried by a tubular mandrel (12). At least one of the sealing assemblies (15, 16) comprises a expandable element (22; 34) being activated by a pair of annular press elements (19, 20).
    Type: Application
    Filed: January 10, 2011
    Publication date: March 21, 2013
    Applicant: INTERWELL TECHNOLOGY AS
    Inventors: Espen Hiorth, Terje Stormo
  • Patent number: 8397802
    Abstract: A packer having a swellable element is configured for axial expansion of the swellable element. The axial expansion causes the slip mechanism to deploy and engage a sidewall of a tubular or casing. The axial expansion may directly cause activation of the slip mechanism, or may trigger a triggering mechanism to activate a spring-loaded slip mechanism. The swellable element may be the same element used for sealing the packer to the sidewall, or may be a sleeve dedicated for deployment of the slip mechanism.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: March 19, 2013
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Jeffrey J. Lembcke
  • Publication number: 20130062073
    Abstract: An apparatus including a downhole tool for conveyance in a wellbore extending into a subterranean formation. The downhole tool includes a mandrel, and a first packer and a second packer expandable from the mandrel into contact with a wall of the wellbore. The downhole tool includes a standoff coupled to the mandrel between the first packer and the second packer and having a rigid outer perimeter that is diametrically larger than an outer perimeter of the mandrel.
    Type: Application
    Filed: November 28, 2011
    Publication date: March 14, 2013
    Inventor: Nathan Landsiedel
  • Patent number: 8393387
    Abstract: An anchor system includes an anchoring device. The anchoring device is operably connected to at least one of a restriction indicator and a load isolation device each of which include a release member that releases at a selected load in order to ensure setting of the anchor at a desired location. A method is included.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: March 12, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Stephen K. Harmon, Christopher W. Guidry, Marcelle H. Hedrick, Brett W. Hrabovsky, Guruswami Navin
  • Publication number: 20130056227
    Abstract: An isolation packer. The packer is both an inflation packer and swell-based. That is, an outer shell or bladder may be utilized in conjunction with internal swell material. In advance of inflation, a void or cavity may be disposed between the inner surface of the shell and an outer surface of the swell material. Thus, fluid inflation of this void may result in an inflation that becomes swell-material filled until the void is eliminated leaving behind a more unitary and swollen packer of enhanced reliability.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 7, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Barton Sponchia
  • Publication number: 20130048272
    Abstract: Embodiments of the disclosure pertain to a mandrel for a downhole tool that may include a body having a proximate end with a first outer diameter and a distal end with a second outer diameter; a first set of threads disposed on the distal end; and a transition region formed on the body between the proximate end and the distal end. In aspects, the mandrel may be made from filament wound composite material.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 28, 2013
    Inventor: Duke VanLue
  • Publication number: 20130048314
    Abstract: Embodiments of the disclosure pertain to a metal slip for a downhole tool that may include a slip body; an outer surface comprising gripping elements; and an inner surface configured for receiving a mandrel. In aspects, slip body may include at least one hole formed therein, and a buoyant material may be disposed in the hole.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 28, 2013
    Inventor: Duke VanLue
  • Publication number: 20130048271
    Abstract: Embodiments of the disclosure pertain to a composite slip for a downhole tool, the composite slip having a circular slip body having one-piece configuration with at least partial connectivity around the entire circular slip body, and at least two grooves disposed therein. In aspects, the slip body may be made from one of filament wound material, fiberglass cloth wound material, and molded fiberglass composite.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 28, 2013
    Inventor: Duke VanLue
  • Publication number: 20130048315
    Abstract: Embodiments of the disclosure pertain to an anti-rotation assembly for a downhole tool, the anti-rotation assembly having an anti-rotation device; and a lock ring engaged with the anti-rotation device, wherein the anti-rotation device is selected from a group consisting of a spring, a mechanically spring-energized member, and composite tubular piece. Other embodiments pertain to a method of operating a downhole tool that includes an anti-rotation assembly.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 28, 2013
    Inventor: Duke VanLue
  • Publication number: 20130025849
    Abstract: A packer arrangement for forming a seal between an inner tubular string and an outer tubular string in a borehole includes: an outer tubular string member defining an axial flowbore and having an associated packer setting mechanism; a packer device disposed at least partially within the outer tubular string member to form a seal against an inner tubular string, the packer device including a degradable layer for temporarily and at least partially protecting the packer device; an inner tubular string member to be disposed within the flowbore of the outer tubular string member; and an actuator carried on the inner tubular string member, the actuator being operable to actuate the packer setting mechanism to set the packer device against the inner tubular string.
    Type: Application
    Filed: July 26, 2011
    Publication date: January 31, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Bennett Richard, James Doane
  • Publication number: 20130020071
    Abstract: Slip members for use with downhole tools comprise a body formed of a first or body material and one or more hard material elements formed of a second or element material. The element material is harder than the body material. The hard material element is disposed through the body and in communication with a first surface and a second surface of the body, the second surface being disposed opposing the first surface. During manufacturing of the slip members, the hard material element may extend outwardly from one or both of the first and second surfaces. After manufacturing, the hard material element can be shaped to provide a gripping member.
    Type: Application
    Filed: July 18, 2011
    Publication date: January 24, 2013
    Inventor: Edward J. O'Malley
  • Patent number: 8336634
    Abstract: Disclosed herein are sealing assemblies which include a mandrel; an inner element formed around the mandrel; an outer element formed around the inner element; and a plurality of slats arranged between the inner and outer elements. The slats have a friction-reducing agent on the surface of the slats. Also disclosed herein are methods for zonal isolation within a wellbore. The methods include providing a mandrel; providing an inner element formed around the mandrel; providing an outer element formed around the inner element; providing a plurality of slats arranged between the inner and outer elements; and axially compressing the inner element and the outer element to radially expand the inner element and outer element. The slats have a friction-reducing agent on their surface.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: December 25, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: William D. Eatwell, Jason A. McCann
  • Publication number: 20120312560
    Abstract: Disclosed are apparatuses useful for forming a seal in a subterranean wellbore and methods for using the disclosed apparatuses for forming a seal in a wellbore.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicants: Board of Regents, The University of Texas System, Nanocomposites Inc.
    Inventors: Jeffrey L. Bahr, S. Gina Butuc, Manuel Quevedo-Lopez
  • Publication number: 20120305236
    Abstract: Apparatuses for restricting fluid flow through a well conduit comprise a tubular member having a radially expandable seat member disposed within the tubular member. The radially expandable seat member comprises one or more arcuate members, each having first and second ends. The radially expandable seat member comprises a first position in which the first and second ends are disposed relative to each other to provide a first inner diameter opening through the radially expandable seat member for receiving a plug element, and a second position in which the first and second ends are moved radially outward relative to one another to provide a second inner diameter opening through the radially expandable seat member, the second inner diameter being greater than the first inner diameter thereby facilitating the plug element passing through the radially expandable seat member.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Inventor: VARUN GOUTHAMAN
  • Patent number: 8322449
    Abstract: A method of removing a downhole tool from a wellbore comprising contacting the tool with a heat source wherein the tool comprises at least one load-bearing component comprising a thermally degradable material. A method of reducing the structural integrity of a downhole tool comprising fabricating the load-bearing components of the tool from a thermally degradable material. A method of removing a downhole tool comprising mechanically milling and/or drilling the tool from a wellbore wherein the tool comprises at least one load bearing component comprising a phenolic resin wherein the phenolic resin comprises a rosole, a novalac or combinations thereof.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 4, 2012
    Assignees: Halliburton Energy Services, Inc., MCR Oil Tools, LLC
    Inventors: Robert Preston Clayton, Kevin Berscheidt, Michael C. Robertson
  • Publication number: 20120298349
    Abstract: A packer for sealing against an inner cylindrical mandrel and a wellbore wall.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 29, 2012
    Applicant: I-TEC AS
    Inventors: Kristoffer Braekke, Bård-Einar Angell, Melanie Seguin
  • Publication number: 20120273188
    Abstract: A method of forming a swellable oilfield apparatus provides an apparatus with a body of swellable elastomeric material which increases in volume on exposure to at least one triggering fluid, and the surface energy of the swellable elastomeric material is modified to increase the water-wettability of the swellable elastomeric material. The swellable elastomeric material may comprise a base elastomer and at least one additive selected to modify the surface energy. Alternately, the swellable elastomeric material may comprise a base elastomer treated by an electrical treatment process to modify the surface energy of the swellable elastomeric material. An apparatus constructed according to the method provides improved swelling performance in aqueous fluids.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: SWELLTEC LIMITED
    Inventors: Keith Spacey, Kim Nutley, Brian Nutley
  • Publication number: 20120267123
    Abstract: Methods and apparatus include tubing expanded to create a seal in an annulus surrounding the tubing. The tubing includes a sealing material selected to cause forming of undulations in a diameter of the tubing upon expansion of the tubing. Various factors of the sealing material such as deviations in its thickness influence sealing performance of the tubing with the sealing material.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 25, 2012
    Inventors: Varadaraju Gandikota, Lev Ring
  • Patent number: 8291970
    Abstract: A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 23, 2012
    Assignees: Halliburton Energy Services Inc., MCR Oil Tools, LLC
    Inventors: Loren C. Swor, Brian K. Wilkinson, Michael C. Robertson
  • Patent number: 8291969
    Abstract: A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: October 23, 2012
    Assignees: Halliburton Energy Services Inc., MCR Oil Tools, LLC
    Inventors: Loren C. Swor, Phillip M. Starr, Don R. Smith, Brian Keith Wilkinson, Michael C. Robertson
  • Publication number: 20120261127
    Abstract: A downhole tool provided within a casing string for use in cement staging operations. The tool includes a sleeve in the tool that selectively slides downward under pressure to expose ports formed in a side wall of the tool. Also, an annulus through the tool is selectively blocked so that cement in the casing string flows radially outward through the ports and into an annulus between the tool and a wellbore. An inflatable packer is included that is integral to the body of the tool and is inflated with a fluid that is pushed into the packer as the sleeve slides downward. An optional expanding agent can be included in the packer that is a metal oxide and is activated with the addition of water.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventor: Shaohua Zhou
  • Publication number: 20120227957
    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: Application
    Filed: March 9, 2011
    Publication date: September 13, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Richard Y. Xu, Mark K. Adam
  • Publication number: 20120227969
    Abstract: A method and apparatus for cementing a zone of borehole casing using an external casing packer (ECP). The method involves sealing the base of the ECP with a ball dropped in a seat, and then pressurising the casing to inflate an elastomeric packer sleeve through a one-way valve. When a design differential pressure is reached across the casing and elastomeric sleeve, a grout valve in the upper part of the packer opens to limit the sleeve inflation pressure and to provide a one-way valve through which cement grout passes to permit grouting of the annulus between the casing and the borehole.
    Type: Application
    Filed: November 19, 2010
    Publication date: September 13, 2012
    Inventor: Ian Gray
  • Publication number: 20120217010
    Abstract: Zonal isolation apparatus includes at least one packer assembly and can be used in completing an open-hole potion of a wellbore, which open-hole portion extends through at least two subsurface intervals. The zonal isolation apparatus includes base pipe and filter medium, which together form a sand screen. Each packer assembly comprises at least two mechanically set packer elements. Intermediate the at least two mechanically set packer elements is at least one swellable packer element. The swellable packer element is actuated over time in the presence of a fluid such as water, oil, or a chemical. Swelling may occur should one of the mechanically set packer elements fail. The zonal isolation apparatus also includes alternate flow channel(s) that serve to divert gravel pack slurry from an upper interval to lower intervals during gravel packing operations. A method for completing a wellbore using the zonal isolation apparatus is also provided herein.
    Type: Application
    Filed: August 23, 2010
    Publication date: August 30, 2012
    Inventors: David C. Haeberle, Michael D. Barry, Michael T. Hecker
  • Publication number: 20120205092
    Abstract: The present invention generally relates to an anchoring and sealing tool. In one aspect, downhole tool for use in a wellbore is provided. The tool includes a tubular having a tapered outer surface. The tool further includes an expandable annular member disposed on the tubular. The expandable member has an anchor portion. The tool further includes a seal member disposed in a groove of the expandable annular member. The seal member has one or more anti-extrusion bands, wherein the seal member and the anchor portion are configured to be expandable radially outward into contact with the wellbore as the expandable annular member moves along the tapered outer surface of the tubular.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 16, 2012
    Inventors: George Givens, Rocky A. Turley
  • Patent number: 8240390
    Abstract: Disclosed herein are methods and apparatus for releasing a releasable packer. The apparatus may include shear screws, a mechanism for isolating the shear screw from a shearing force. The mechanism for isolating the shear screw from a shearing force is selectively unlockable to expose the shear screw to the shearing force. The methods may include unlocking a mechanism protecting at least one shear screw, applying a shearing force to the at least one shear screw, and shearing the at least one shear screw.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: August 14, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: James D. Hendrickson, Baozhong Yang
  • Publication number: 20120186801
    Abstract: A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.
    Type: Application
    Filed: April 3, 2012
    Publication date: July 26, 2012
    Inventor: Andrew Kutac
  • Publication number: 20120186814
    Abstract: A technique facilitates use of a hydraulically actuated packer in a high temperature, downhole environment. The packer is actuated by directing pressurized fluid to the packer and routing the fluid to an actuation region of the packer to provide the force for setting the packer. A thermal isolation member is positioned in the packer along the pressurized fluid flow path and activates upon exposure to heat. Once the thermal isolation member is fully activated, flow is blocked along the pressurized fluid flow path which prevents return flow of pressurized fluid.
    Type: Application
    Filed: July 28, 2010
    Publication date: July 26, 2012
    Inventors: Vi Nguy, Nathan Kathol
  • Publication number: 20120168160
    Abstract: The present invention provides an apparatus and assembly for creating a seal in a wellbore around a cable or line. The assembly includes a longitudinal body and a swellable portion which comprises a material selected to increase in volume on exposure to at least one triggering fluid. The swellable portion has a formation open to the longitudinal surface which provides a pathway for a cable or line to extend through the swellable portion, and an insert of swellable material. In an embodiment of the invention, the insert partly or fully encloses or encapsulates the cable or line. An aspect of the invention is characterised by the provision of a formation which is open to an outer longitudinal surface of the body.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 5, 2012
    Applicant: SWELLTEC LIMITED
    Inventors: KIM NUTLEY, BRIAN NUTLEY
  • Publication number: 20120160475
    Abstract: A linkage device separate from the integrated slips bridge links the pair of spaced-apart members of each slip to prevent sizeable fractured bits from moving away in the event of a fracture in the slip. The linkage device comprises a pair of ductile steel bars the ends of which loosely anchor in holes in each slip member, the holes being located at both sides of the slips at opposite ends of a groove that houses the linkage bar preventing it from falling out of the holes. In this way, a fractured slip may continue to assist in setting the tool and, moreover, potential hazardous interference in further tool operations are avoided. Furthermore, tool damage including slips fracture is reduced by a resilient damper material which buffers the lower cone as it slides down on the slip-holder cage during a tool release operation.
    Type: Application
    Filed: July 18, 2011
    Publication date: June 28, 2012
    Applicant: TEXPROIL S.R.L.
    Inventor: Horacio Daniel Burgos
  • Publication number: 20120160522
    Abstract: A packer tool having simple and reliable setting and release systems comprising three or more slips evenly distributed around a mandrel. Each slip comprises two members with gripping teeth which, except for one slip, typically have the capacity to grip a well casing in opposite axial directions. The remaining slip has only one member with teeth able to grip the casing, the other slip member has dummy teeth with nil gripping capacity. The latter teeth have blunt or rounded edges and are not slanted in a selective gripping direction as the sharper teeth of the other slip members.
    Type: Application
    Filed: July 18, 2011
    Publication date: June 28, 2012
    Applicant: TEXPROIL S.R.L.
    Inventor: Horacio Daniel Burgos
  • Publication number: 20120160524
    Abstract: The invention relates to an assembly to be run with a well tubular having openings provided in the wall and for being arranged in a well bore and thereby forming a space between said tubing and the well bore surface. The assembly comprising: first fluid control means and second fluid control means being provided in another opening in said well tubular. The assembly further having a set of packers for sealing of the space between said tubing and the well bore surface, said set of packers being positioned such that a part the tubular having both first and second fluid control means is located between the set of packers. The first fluid control means is adapted such that it is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface. The second fluid control means is adapted such that it is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular.
    Type: Application
    Filed: June 22, 2010
    Publication date: June 28, 2012
    Inventor: Peter Lumbye
  • Patent number: 8205671
    Abstract: A bridge plug or packer assembly includes a mandrel; at least one sealing element provided on the mandrel; a pair of backup rings each having a plurality of spiral ring grooves provided on the mandrel on respective sides of the at least one sealing element; and a pair of pressure-applying elements provided on the mandrel on respective sides of the pair of backup rings, respectively.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: June 26, 2012
    Assignee: Branton Tools L.L.C.
    Inventor: Christopher A. Branton
  • Publication number: 20120152568
    Abstract: A downhole apparatus having a radially expanding portion and a support structure are described. The support structure comprises an attachment means for coupling to the apparatus and a support portion configured to be deployed from a first unexpanded condition to a second expanded condition by expansion of the apparatus. In one aspect of the invention, the downhole apparatus is expanded by exposing the swellable material to at least one predetermined fluid, and the support structure abuts the swellable material in its expanded form. A method of use and its application to a well packer, a hanging member, an anchor and a centralising apparatus are described.
    Type: Application
    Filed: February 28, 2012
    Publication date: June 21, 2012
    Applicant: SWELLTEC LIMITED
    Inventors: Kim Nutley, Brian Nutley
  • Publication number: 20120145414
    Abstract: A downhole apparatus, such as a wellbore packer, is provided with a swellable member and a fluid supply assembly. The fluid supply assembly is to receive fluid and expose the swellable member to the fluid to cause expansion of the swellable member, and comprises a support structure for supporting the swellable member on the body. In a preferred embodiment, the support structure defines a chamber and is configured to allow fluid to flow and access the swellable member. A method of use and method of sealing a wellbore is described.
    Type: Application
    Filed: February 17, 2012
    Publication date: June 14, 2012
    Applicant: SWELLTEC LIMITED
    Inventors: Kim Nutley, Brian Nutley
  • Patent number: 8191644
    Abstract: Disclosed herein is a completion device that includes an interior layer that swells when exposed to a wellbore fluid; and an exterior layer encasing the interior layer and configured to be impermeable to the wellbore fluid at temperatures below an activation depth temperature, and configured to be permeable to the wellbore fluid at temperatures above the activation depth temperature. Also disclosed herein is a method of deploying a completion device that includes encasing an interior layer of the device in a temperature-sensitive exterior layer that is impermeable to a fluid in the wellbore at temperatures below an activation depth temperature; attaching the device on a tube string; inserting the tube string into the wellbore; creating a leak path in the temperature-sensitive exterior layer in response to the device being exposed to the activation depth temperature in the wellbore; and swelling the interior layer with the wellbore fluid.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: June 5, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Gary Rytlewski, Nitin Vaidya
  • Publication number: 20120125640
    Abstract: A swellable packer for use in a subterranean well can include a seal element with a swellable material which contracts in response to temperature decrease, and a temperature compensator which applies increased force to the seal element in response to temperature decrease. A method of compensating for thermal contraction of a swellable material in a subterranean well can include a temperature of the swellable material increasing in response to installing the swellable material in the well, and a temperature compensator applying an increased force in response to a temperature decrease occurring after the temperature increasing step. A well tool for use in a subterranean well can include a swellable material and a temperature compensator which applies an increased force when the swellable material contracts.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 24, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Alf Kolbjørn Sevre
  • Publication number: 20120125641
    Abstract: Modular hydraulic packer-and-port system and corresponding methods of operation. The system may be installed for temporary, semi-permanent, or permanent deployments. The system and method may provide for hydraulic isolation of target zones in a well while allowing pass-through tubes to the target zones for taking samples, inserting monitoring sensors, and the like.
    Type: Application
    Filed: September 14, 2011
    Publication date: May 24, 2012
    Inventors: Warren Barrash, Michael Cardiff
  • Publication number: 20120125630
    Abstract: A well tool can include a swellable material, and a degradable material which supports the swellable material, but which degrades in response to contact with a selected fluid in a well. A packer for use in a subterranean well can include a swellable material, and a degradable material which supports the swellable material. A method of unsetting a packer in a subterranean well can include the steps of, after the packer has been set in the well, exposing a degradable material of the packer to a selected fluid, thereby degrading the degradable material, and a seal element of the packer being unsupported by the degradable material in response to the exposing step.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 24, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Alf Kolbjørn SEVRE
  • Publication number: 20120103634
    Abstract: A ring member for a downhole apparatus includes a swellable material selected to increase in volume on exposure to at least one triggering fluid. The ring member is configured to cooperate with a swellable member disposed on a body of the apparatus, and may function as a gauge ring or a retaining member. The ring member is secured to the apparatus via a coupling arrangement which couples the body to an adjacent well string section. The ring member is threaded into the well string. Alternately, the ring member may be disposed over an upstanding formation such as a coupling sleeve by clamping.
    Type: Application
    Filed: December 12, 2011
    Publication date: May 3, 2012
    Applicant: Swelltec Limited
    Inventors: Kim Nutley, Brian Nutley
  • Patent number: 8157019
    Abstract: Disclosed herein is a downhole tubular sealing system. The system includes, a tubular runnable in a downhole wellbore, a swellable seal disposed at the tubular that is sealable with the downhole wellbore when swelled, and at least one releasable member in operable communication with the tubular and the swellable seal. The at least one releasable member configured to longitudinally fix the swellable seal to the tubular when nonreleased and to longitudinally disengage the swellable seal from the tubular when released.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: April 17, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: James G. King, Stephen J. Chauffe
  • Patent number: 8151873
    Abstract: An open hole packer uses mandrel expansion and a surrounding sealing element that can optionally have a swelling feature and further a seal enhancing feature of a ring with an internal taper to match an undercut on the mandrel exterior. As a swage progresses to the taper at the transition between the ring and the extending flat fingers, the fingers get plastically deformed in an outward radial direction to push out the sealing element. Shrinkage of the mandrel axially due to radial expansion brings a ring on the mandrel outer surface under the fingers to act as a support for the fingers against the seal which is pushed against the open hole. Mirror image orientations are envisioned to aid in retaining pressure differentials in opposed directions. Another external mandrel ring extends into the seal to keep its position during differential pressure loading.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: April 10, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Chee K Lee, Mark K. Adam, Jeffrey C. Williams