Central Chamber Sealed With Respect To Prepositioned Modified Surrounding Conduit Patents (Class 166/115)
  • Patent number: 9719311
    Abstract: A set of manifold string members usable to selectively control separate flowing fluid streams of varying velocities for operations of well construction, injection or production of fluid mixtures of liquids, gases and/or solids, that can be injected into, or taken from, one or more proximal regions of a subterranean passageway, underground cavern, hydrocarbon or geothermal reservoir. Fluid communicated through a manifold string radial passageway of a manifold crossover, between conduit strings and at least one other conduit, can be controlled with at least one flow controlling member, communicating with a passageway member from an innermost, concentric, and/or annular passageway. Fluid communication can be selectively controlled for various configurations of one or more substantially hydrocarbon and/or substantially water wells, below a single main bore and wellhead.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: August 1, 2017
    Inventor: Bruce A. Tunget
  • Patent number: 9677381
    Abstract: A downhole hydraulic control tool comprising a substantially tubular body adapted for connection in a tubing string, the body including a throughbore arranged coaxially with a bore of the tubing string and one or more pockets arranged on a wall of the body, the pockets including a hydraulic power source and at least two control lines, wherein the device includes a pump to drive hydraulic fluid through the control lines and a switchable flow mechanism for switching the flow of pumped fluid between the at least two control lines, and a switchable flow mechanism and a method of operating one or more downhole devices from a downhole located hydraulic control tool.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: June 13, 2017
    Assignee: Halliburton Manufacturing & Services Limited
    Inventor: Michael A. Reid
  • Patent number: 9624750
    Abstract: A bridge plug arrangement includes a plug having an upper end and a bottom end. The bridge plug arrangement also optionally includes a cylindrical seat. The bridge plug arrangement further includes a tubular member. The tubular member may be part of a casing string. The tubular member is configured to receive the plug and, when used, the seat. The plug and/or the seat may be fabricated from a frangible material. Also disclosed is a method for diverting fluids in a wellbore using the bridge plug arrangement. The method may include landing the plug onto the seat within the wellbore below a subsurface zone of interest. Treatment fluids are then injected into the wellbore, where they are diverted through perforations and into a formation. The plug and/or seat is then optionally broken into a plurality of pieces through use of a downward mechanical force.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: April 18, 2017
    Assignees: EXXONMOBIL UPSTREAM RESEARCH COMPANY, RASGAS COMPANY LIMITED
    Inventors: Pavlin B. Entchev, William A. Sorem, Zhihua Wang, David A. Baker, John K. Montgomery, Larry Mercer, Dennis H. Petrie
  • Patent number: 9605679
    Abstract: An immersion pump is provided, the pump having an integral housing with an inlet opening on an intake side, an outlet opening on a delivery side, a passage for electrical lines, an electronic unit for processing power and optionally information signals, an electric motor, a pressure chamber and a pump unit. The electronic unit, the electric motor, the pressure chamber and the pump unit may be pre-assembled to an insert, with the pre-assembled insert being supported on one end of the housing. An axial clamping and/or fastening system, in particular a tapered locking arrangement, is provided on the opposite end of the housing.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 28, 2017
    Assignee: KSB Aktiengesellschaft
    Inventors: Michael Fath, Christoph Jaeger, Boris Werner
  • Patent number: 9580986
    Abstract: Generally, the present disclosure is directed to metal-to-metal sealing systems and methods for use with the various pressure-retaining components, and in particular to pressure-retaining components that may be used in mudline suspension systems. In one illustrative embodiment, a system is disclosed that includes a first pressure-retaining component having an outside face, the outside face including first and second metal sealing surfaces proximate an end of the first pressure-retaining component, wherein the second metal sealing surface is positioned along the outside face between the first metal sealing surface and the end of the first pressure-retaining component. The system further includes, among other things, a second pressure-retaining component having an inside face, the inside face of the second pressure-retaining component including a third metal sealing surface that is adapted to sealingly engage at least the first metal sealing surface.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: February 28, 2017
    Assignee: FMC Technologies, Inc.
    Inventors: Hao-Ching Kuo, Ashish Kumar
  • Patent number: 9528336
    Abstract: A method includes running an assembly on a tool in a contracted state into a well. The assembly includes segments that are adapted to be radially contracted and arranged in a first number of layers along a longitudinal axis of the assembly in the contracted state of the assembly. The technique includes using the tool to expand the assembly downhole in the well to transition the assembly between the contracted state and an expanded state. Using the tool to expand the seat assembly includes radially expanding the segments and longitudinally contracting the segments to arrange the layers in a second number of layers having at least one layer less than the first number.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: December 27, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Gregoire Jacob, Pierre-Arnaud Foucher
  • Patent number: 9322239
    Abstract: Drag-enhancing structures for downhole operations are included in a downhole assembly that further includes a tool string, extends past a maximum transverse perimeter of the tool string, and increases resistance to fluid flow past the downhole assembly when the downhole assembly is pumped in a downhole direction within a wellbore conduit. The systems and methods include conveying the downhole assembly in the downhole direction within the wellbore conduit. The systems and methods further may include decreasing the resistance to fluid flow past the downhole assembly after the downhole assembly is located within a target region of the wellbore conduit and/or flowing a sealing material past the downhole assembly while the downhole assembly is located within the wellbore conduit.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: April 26, 2016
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Renzo M. Angeles Boza, Randy C. Tolman, Abdel Wadood M. El-Rabaa, Christian S. Mayer, Pavlin B. Entchev, Jonathan L. Hollett
  • Patent number: 9175520
    Abstract: An expandable apparatus may comprise a tubular body, a valve piston and a push sleeve. The tubular body may comprise a fluid passageway extending therethrough, and the valve piston may be disposed within the tubular body, the valve piston configured to move axially downward within the tubular body responsive to a pressure of drilling fluid passing through a drilling fluid flow path and configured to selectively control a flow of fluid into an annular chamber. The push sleeve may be disposed within the tubular body and coupled to at least one expandable feature, the push sleeve configured to move axially responsive to the flow of fluid into the annular chamber extending the at least one expandable feature. Additionally, the expandable apparatus may be configured to generate a signal indicating the extension of the at least one expandable feature.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 3, 2015
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Steven R. Radford, Chad T. Jurica, Li Li, Timothy Miller, Marcus Oesterberg, Khoi Q. Trinh
  • Patent number: 9140097
    Abstract: A method for wellbore treatment includes running a liner into a wellbore, the liner including a wall, an inner bore defined by the wall, a first port through the wall, a second port though the wall spaced axially from the first port, a first removable closure for the first port and a second removable closure for the second port; positioning the liner in an open hole section of the wellbore to create an annulus between the liner and a portion of the wellbore wall and with the second port downhole of the first port; inserting a treatment string assembly into the liner, the treatment string assembly including a tubing string and an annular seal about the tubing string and being insertable into the inner bore of the liner; setting the annular seal to create a seal between the tubing string and the liner downhole of the second port; and while the first port is closed to fluid flow therethrough, pumping wellbore treatment fluid into an annular area between the tubing string and the liner such that the fluid passes
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: September 22, 2015
    Assignee: PACKERS PLUS ENERGY SERVICES INC.
    Inventors: Daniel Jon Themig, Christopher Denis Desranleau, Robert Joe Coon
  • Patent number: 9133674
    Abstract: A downhole tool actuation system has a fluid path defined by a bore formed within a tubular body of a tool. A reciprocating sleeve is located within the bore and the sleeve has a segmented seat with a fluid by-pass. At least one seat segment is positioned by an outer diameter of the sleeve to complete the seat, and a relief is formed in a wall adjacent the outer diameter of the sleeve. When the seat is occupied by an obstruction, only a portion of the fluid path is obstructed and fluid impinging the obstruction causes the sleeve to move in the direction of flow until the at least one segment is relieved by the relief thereby releasing the obstruction.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: September 15, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren
  • Patent number: 9133692
    Abstract: A fracturing and gravel packing tool has features that prevent well swabbing when the tool is picked up with respect to a set isolation packer. An upper or multi-acting circulation valve allows switching between the squeeze and circulation positions without risk of closing the low bottom hole pressure ball valve. The multi-acting circulation valve can prevent fluid loss to the formation when being set down with the crossover tool supported or on the reciprocating set down device and the multi-acting circulation valve is closed without risk of closing the wash pipe valve.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: September 15, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Jeffry S. Edwards
  • Patent number: 9080418
    Abstract: An apparatus for controlling a fluid flow in a borehole may include a tool body that retrieves a fluid sample from a subsurface formation. The tool body has a fluid conduit having an inlet for receiving the fluid sample and an outlet for conveying the fluid sample to a selected location. A mandrel selectively blocks flow across the fluid conduit; and a seal disposed on the mandrel includes at least one chevron seal element that cooperates with the mandrel to selectively block flow across the fluid conduit.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: July 14, 2015
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Farhat A. Shaikh, Marcelo F. Civarolo
  • Publication number: 20150107854
    Abstract: An apparatus for protecting a functional fluid includes an inner pliant shell disposed inside an outer pliant shell. A sealed space separates the inner and outer pliant shells and the inner pliant shell defines a variable volume for receiving the functional fluid. A filler fills the sealed space.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 23, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Mochtar Soltani
  • Publication number: 20150075772
    Abstract: There is provided a system for effecting production of formation fluids from a subterranean formation. The system includes a gas anchor for mitigating gas lock. Sealing engagement of the gas anchor against the wellbore tubular is effected without use of a conventional packer, which would otherwise be susceptible to receiving debris deposited from the formation fluid, which thereby results in the packer, as well as the gas anchor, becoming vulnerable to becoming stuck within the wellbore tubular.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Applicant: TriAxon Oil Corp.
    Inventors: Jeffrey Charles Saponja, Robbie Singh Hari
  • Publication number: 20140262208
    Abstract: A shunt tube assembly comprises a plurality of shunt tubes, a jumper tube, and a coupling member configured to provide fluid communication between the jumper tube and the plurality of shunt tubes. The coupling member can comprise a first end and a second end. The coupling member may be configured to provide a sealing engagement between the coupling member and the jumper tube at the first end, and the coupling member may be configured to provide a sealing engagement between the coupling member and the plurality of jumper tubes at the second end.
    Type: Application
    Filed: June 11, 2012
    Publication date: September 18, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Gregory Scott Cunningham, Brandon Thomas Least, Stephen Michael Greci, Jean Marc Lopez, Jan Veit
  • Publication number: 20140238699
    Abstract: An annular seal for use in a wellhead assembly has inner and outer legs that each extend in a direction that is generally parallel with an axis of the seal to define an annular space therebetween. Wickers are provided on an outer surface of the seal, so that when the seal is energized and the legs are urged radially apart from one another, the wickers engage with a mating surface of a downhole tubular. Embedding the wickers into the tubular creates a flow barrier across the interface between the seal and the tubular. The wickers deform the surface of the tubular, which creates a lock down force that opposes relative axial movement of the tubular.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 28, 2014
    Applicant: Vetco Gray Inc.
    Inventors: Nicholas Peter Gette, Daniel Ralph Barnhart, David Lawrence Ford
  • Publication number: 20140151024
    Abstract: A packoff assembly for sealing a space between an inner well member and an outer well member. The packoff assembly has a packoff body, and a sealing mechanism with a U-shaped cross-section, including a packoff body leg and a well component leg extending substantially downward from a transverse connecting section. The well component leg is elastically bendable so that it resists inward deflection toward the packoff body and so that the sealing mechanism can be set without the use of an energizing ring. The packoff body leg is configured for engagement with the packoff body, and the well component leg has a sealing surface configured for sealing engagement with the inner or the outer well member.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: VETCO GRAY U.K., LIMITED
    Inventors: James Anderson Sinnott, Arlane Petrie Christie
  • Publication number: 20140124193
    Abstract: A subterranean wellbore assembly includes an outer cylindrical wall and an inner cylindrical wall cooperatively defining an annular space. A seal assembly is disposed within the annular space. The seal assembly includes chevron seals. Each chevron seal includes a central portion and two axially and radially extending wing portions. Chevron seals may be of polymeric PEEK material or of nickel based material. Other seal assemblies may be arranged in the annular space in place of the seal assembly.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Parker-Hannifin Corporation
    Inventors: Gordon Rowe, Kermit Bierut
  • Patent number: 8555958
    Abstract: A SAGD system including a string defining an axial flow channel and an annular flow pathway, a fluid access structure between the axial flow channel and the annular flow pathway, and a valve disposed within the annular flow pathway. The valve being selectively closable to selectively inhibit annular flow in an uphole direction. A method for treating a SAGD formation.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: October 15, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Anderson da Silva Amaral, Bradley Gene Baker
  • Publication number: 20130062059
    Abstract: An apparatus for obtaining a fluid at a position within a wellbore that penetrates a subterranean formation includes a body adapted to be disposed in the wellbore on a conveyance equipped with one or more expandable packers providing a sample region disposed between an upper cleanup zone and a lower cleanup zone when expanded into abutting contact with the wellbore wall; an upper cleanup port provided at the upper cleanup zone; a lower cleanup port provided at the lower cleanup zone; at least one fluid cleanup flowline in fluid connection with the upper and lower cleanup ports; a sampling inlet provided at the sampling region; and a sampling flowline in fluid connection with the sampling inlet for drawing fluid from the sampling region.
    Type: Application
    Filed: October 31, 2012
    Publication date: March 14, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: SCHLUMBERGER TECHNOLOGY CORPORATION
  • Patent number: 8307902
    Abstract: A downhole flow control tool 1, includes a flow control member in the form of a sleeve 8, and comprises a main body 2 having a longitudinal internal bore 3 extending therethrough, an upper end 4 having a box section 6, and a lower end 5 with a pin section 7, which enable connection of the tool 1 into a work string. The flow control sleeve 8 is mounted for movement relative to the bore 3 between at least a closed and one of several open positions. The tool body 2 includes several flow ports extending through a wall of the body 2 and spaced around a circumference of the body 2. The tool provides multiple fluid flow control options for directing and splitting fluid flow for example during a drilling operation to clear settled cuttings by suitable location of the tool.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: November 13, 2012
    Assignee: Specialised Petroleum Services Group Limited
    Inventor: George Telfer
  • Publication number: 20110067855
    Abstract: A geothermal liner system with packer for sealing a producing zone within a wellbore has a mandrel placed in an interior of the wellbore, a packer releasably affixed around an outer surface of the mandrel, and a sleeve positioned adjacent an end of the mandrel. The liner system is generally tubular and may include joint casings and a mandrel, all being tubular-shaped. The packer is expandable upon exposure to wellbore conditions. The sleeve has perforations in a wall thereof. The mandrel is slidable relative to the packer when the packer expands against the wellbore. The sleeve is selectively controlled to manage production from sealed wellbore zones. The system is stabilized through various wellbore conditions, such as geothermal heat, by being adjustable for thermal expansion of parts of the system.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Inventor: David R. VAN DE VLIERT
  • Patent number: 7849920
    Abstract: For optimizing well production, intervals are selected along a deviated wellbore, and a well test and treatment string is deployed in the wellbore. Each interval is then isolated to enable performance of desired testing. The test data obtained is evaluated to determine an appropriate remedial action which is then implemented via the well test and treatment string. The system and method enable the testing and treatment of a plurality of intervals along a horizontal well during the same run downhole.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: December 14, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Dhandayuthapani Kannan, David E. Sask, Lang Zhan, James G. Filas
  • Patent number: 7708074
    Abstract: A flow control valve for use in a downhole completion tubing string, where the control valve prevents cross flow between producing zones. The control valve comprises a housing forming a plenum therein, a tubular member having a perforated end disposed in the housing, and a plug assembly disposed in the end of the tubular member having perforations. The plug assembly comprises a shaft reciprocatingly disposed in the tubular member. Produced fluids flow within the tubular member, through the perforations to the plenum, and outside of the control valve through corresponding perforations formed in the disk and housing. When pressure in the completion tubing string exceeds produced fluid pressure, the plug will close thereby preventing fluid flow from the completion tubing to the tubular member.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: May 4, 2010
    Assignee: Saudi Arabian Oil Company
    Inventor: Saeed Mohammed AlMubarak
  • Patent number: 7644757
    Abstract: A fixed-point packoff element for a full-bore pressure isolation tool supports a primary seal and a test seal to permit the primary seal to be tested by injecting test fluid through a side port of a tubing head spool before the pressure isolation tool is rigged up for a well stimulation procedure.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: January 12, 2010
    Assignee: Stinger Wellhand Protection, Inc.
    Inventor: Danny Lee Artherholt
  • Patent number: 7640974
    Abstract: Spool apparatus for use in an underground well having casing, comprising a body sized for travel in the well casing, the body defining a well fluid flow duct having a downward facing entrance and a sidewardly facing exit, there being a lower connection for coupling the body to lower well pipe to pass fluid into the body via the entrance, and an upper connection for coupling the body to upper carrier structure used for raising and lowering the body in the well casing, and there being means to latch connect the body to the well casing in a position for well fluid delivery from the body via the exit.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: January 5, 2010
    Inventor: Herbert W. Hoeptner, III
  • Publication number: 20090101357
    Abstract: A tubing component for use in a downhole environment including a tubular having a plurality of openings therein and a plurality of beaded matrixes disposed in the plurality of openings the beaded matrixes being configured to be pluggable in situ in the downhole environment. A method for controlling flow in a wellbore.
    Type: Application
    Filed: July 11, 2008
    Publication date: April 23, 2009
    Applicant: Baker Hughes Incorporated
    Inventor: Michael H. Johnson
  • Patent number: 7293437
    Abstract: A drum washing machine having a gasket to prevent leakage of water in the tub and the laundry from being stuck in a laundry opening part. The washing machine including a cabinet having a first opening through which a laundry is put in the cabinet, a tub installed in the cabinet to have a second opening corresponding to the first opening, a drum installed in the tub to have a third opening corresponding to the second opening, and a gasket including a leakage preventing part having one end connected to a rim of the first opening and the other end connected to a rim of the second opening to prevent water leakage and a laundry-stuck preventing part provided on an inner circumference of the leakage preventing part to prevent the laundry from being stuck in a space between the first and third openings.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: November 13, 2007
    Assignee: LG Electronics Inc.
    Inventors: Jae Kyum Kim, Ho Cheol Kwon, Kang Mo Choi
  • Patent number: 7278493
    Abstract: Systems and methods for guiding a seal assembly associated with a string of production tubing, or a tubular member generally, into a receptacle within a wellbore. The muleshoe of a seal assembly is provided with an auto entry guide device in the form of a guide member or kickover lug that is radially moveable with respect to the muleshoe. The kickover lug is collapsible radially inwardly and biased radially outwardly. The auto entry guide device may also include a centralizer bowspring that is mounted upon the muleshoe. Additionally, the muleshoe is mounted for rotational movement with respect to the seal assembly.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: October 9, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: Thomas G. Corbett, Elmer R. Peterson
  • Patent number: 7231970
    Abstract: A non-rotational casing hanger and seal assembly running tool for use in oil and gas drilling operations has a mandrel and a tool body that is carried by the mandrel. The tool body supports a plurality of latching segments for releasably connecting the tool body to a seal assembly. A plurality of latching dogs on the tool body releasably connect the tool body to a casing hanger. Axial movement between the tool body and mandrel operates a pressure responsive shuttle piston positioned on the mandrel to urge the seal assembly into sealing position. A ball valve positioned in the mandrel bore is operable between open and closed positions to allow independent operations to be carried out such as cementing the casing hanger in position through the mandrel bore and operating the shuttle piston to then allow overpull to unlatch the tool from the casing hanger for retrieval.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 19, 2007
    Assignee: Cameron International Corporation
    Inventors: Michael J. Matusek, William A. Abreo, Jr.
  • Patent number: 7216872
    Abstract: The invention relates to a seal for use with a pipe and flange assembly. The seal is intended to prevent leakage during axial movement of the pipe relative to a flange. The invention comprises a central cylindrical elastomeric member located between two circular elastomeric end rings.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 15, 2007
    Assignee: Oceaneering International, Inc.
    Inventors: Michael N. A. Shaw, Bruce A. Wallace
  • Patent number: 7198099
    Abstract: A system for injecting a treatment fluid into a well, the system includes: a surface controlled subsurface safety valve; a valve control conduit which extends from the surface controlled subsurface safety valve to a wellhead of the well, wherein the surface controlled subsurface safety valve is controlled by varying the fluid pressure in the valve control conduit; a fluid injection opening in the valve control conduit effective for discharging treatment fluid into the well; a treatment fluid injection conduit arranged which is connected to the valve control conduit; at least one treatment fluid injection opening; and a one way check valve which prevents fluid flow from each treatment fluid injection opening via the treatment fluid injection conduit into the valve control conduit, wherein the treatment fluid injection conduit is arranged into a section of the well which is located below the surface controlled subsurface safety valve such that at least one treatment fluid injection opening is located below the
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: April 3, 2007
    Assignee: Shell Oil Company
    Inventors: Lubbertus Lugtmeier, Gerbrand Jozef Maria Van Eijden
  • Patent number: 7191833
    Abstract: A sand control screen assembly (60) that is positionable within a wellbore includes a base pipe (62) having at least one opening (64) that allows fluid flow therethrough and a filter medium (66) positioned exteriorly of the base pipe (62) that selectively allows fluid flow therethrough and prevents particulate flow of a predetermined size therethrough. An isolation member (68) is positioned interiorly of the base pipe (62) forming an annulus (84) therewith. A one-way valve (86) is slidably operable within the annulus (84). The one-way valve (86) controls the flow of fluid through sand control screen assembly (60) such that fluid flow is selectively prevented from the interior to the exterior of the sand control screen assembly (60) but is allowed from the exterior to the interior of the sand control screen assembly (60).
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: March 20, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventor: William Mark Richards
  • Patent number: 7128157
    Abstract: The present invention generally relates to a method and an apparatus for stimulating the production of an existing well. In one aspect, a method of treating a well is provided. The method includes inserting a selective treatment assembly and a plug assembly into a partially lined wellbore until the selective treatment assembly is positioned proximate an area of interest. Thereafter, the selective treatment assembly is activated to isolate and treat the area of interest. Next, the selective treatment assembly is deactivated and urged toward the surface of the well until the plug assembly is seated in a polished bore receptacle disposed in a string of casing. At this point, the treated portion of the wellbore is separated from the untreated portion. Thereafter, the pressure in the untreated portion of the wellbore is equalized with the surface of the well and then the selective treatment assembly is removed from the wellbore while the plug assembly remains in the polished bore receptacle.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: October 31, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Corey E. Hoffman, Robert Murphy
  • Patent number: 7124829
    Abstract: An expansion-set fluid production assembly transfers well fluids from a casing string 12 to a production tubing string 112. A tubular anchor 72 and tubular expander 70 may be positioned downhole on a running tool at a desired depth along the casing string 12. An actuator assembly 10 may forcibly move the tubular expander 70 into the tubular anchor 72, expanding the tubular anchor 72 to seal and secure the tubular anchor 72 against the casing string 12. The running tool actuator assembly 10 may be removed, leaving the expanded tubular anchor 72 and tubular expander 70 downhole. A seal nipple 122 may be sealed with the tubular expander 70 and to the production tubing string 112. Fluids may then be recovered from the wellbore through the casing string 12, through the fluid production assembly, and into the production tubing string 112.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: October 24, 2006
    Assignee: TIW Corporation
    Inventor: Britt O. Braddick
  • Publication number: 20040238182
    Abstract: An apparatus that is usable with a subterranean well includes a latch and an engagement mechanism. The latch is adapted to form a releasable connection between a first conduit section and a second conduit section in response to engagement of an actuator of the latch and maintain a first distance between an end of the first conduit section and an end of the second conduit section. The engagement mechanism is adapted to continuously engage the actuator to cause the latch to connect the first conduit section and the second conduit section despite the movement of the engagement mechanism between a first position and a second position. The second distance between the first position and the second position is greater than the first distance.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 2, 2004
    Inventor: Barry A. Read
  • Publication number: 20040238185
    Abstract: A running tool that delivers an object selectively to one of a plurality of landing nipples and then releases from the object is disclosed. The tool is actuated by raising it after it has passed the desired landing nipple to release a locating dog. The locating dog places locking dogs on the object even with a groove on the landing nipple. Movement of the tool downhole secures the locking relationship and releases the running tool from the object. A sheer pin allows testing at the surface that the object is locked in place, prior to removal of the running tool. The object comprises a fishing neck to allow it to be subsequently retrieved.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 2, 2004
    Inventors: David E. Rothers, John M. Cobb, Alfredo Gomez, Samir M. Nazir, Elias Pena, James M. Youngblood, Brian A. Roth
  • Patent number: 6802371
    Abstract: One or more templates are provided for circulating fluids in a main well bore and for drilling and completing at least one offset well bore from the main well bore. Each template has a body, an inlet leg, a main outlet leg, and an offset outlet leg. A straddle assembly is mounted in the template to configure the template for fluid circulation. The straddle assembly, in cooperation with the inlet and main outlet legs, effects a downhole flow path which directs fluids from the inlet leg through body of the template and out the main outlet leg, bypassing the offset outlet leg. The straddle assembly is distally displaced from the template to reconfigure the template for drilling. A diverter is placed in the body of the template upon displacement of the straddle assembly to define a drill string path from the inlet leg to the offset outlet leg. The offset well bore is drilled by conveying a drill string through the drill string path.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: October 12, 2004
    Assignee: Marathon Oil Company
    Inventors: Gary J. Collins, John Lindley Baugh, Doug J. Murray, Aubrey Clifton Mills
  • Patent number: 6745846
    Abstract: The present invention relates to portions of casing that are inserted into a wellbore. The casing portions are provided with a protected portion in which a friction and/or sealing material can be located. In certain embodiments, the protected portion is provided by first and second annular shoulders that are spaced-apart axially along the length of the casing. The friction and/or sealing material is typically located on an outer surface of the casing between the annular shoulders. There is also provided a casing portion that has annular shoulders provided at either end of the casing portion, with means to connect successive casing portions located on these shoulders. The casing portion in this embodiment is provided with a friction and/or sealing material in a recessed portion of the casing portion.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: June 8, 2004
    Assignee: E2 Tech Limited
    Inventors: Gareth Innes, Peter Oosterling
  • Patent number: 6722426
    Abstract: A metal seal for a wellhead assembly has upper and lower legs extending in opposite directions from each other and a rib extending radially outward from a junction of the legs. A first conical band on the upper leg extends uninterrupted from the rib a selected distance toward a tip of the upper leg. A second conical band on the upper leg extends uninterrupted from the tip of the upper leg toward the first conical band. An annular recess is located between the first and second conical bands. The lower leg also has two conical seal bands separated by a recess.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: April 20, 2004
    Assignee: ABB Vetco Gray Inc.
    Inventors: Thomas F. Sweeney, Norman Brammer, George Chalmers
  • Publication number: 20040055757
    Abstract: A well tool locking apparatus compatible with high temperature, high pressure well conditions comprises a packing ring mandrel that carries a sliding locking dog cage. The locking dogs are expanded radially into a tubing nipple channel by the axial translation of a ramped step on the mandrel surface. Chevron ring packing seals are positioned between the locking dog cage and an abutment shoulder around the mandrel. Translation of the mandrel against the locking dog cage engages the tool locking dogs and expands the chevron ring seal against the inside bore surface of the tubing nipple.
    Type: Application
    Filed: August 6, 2003
    Publication date: March 25, 2004
    Applicant: Baker Hughes Incorporated
    Inventor: Clifford H. Beall
  • Publication number: 20030121654
    Abstract: An injection probe assembly is disclosed for injecting material into subsurface formations for making geotechnical improvements. The probe assembly includes a sheath having an upper end for attaching to a mating tool string and a lower end for receiving a solid drive point. The sheath has a reduced diameter injection area which includes an interior space enclosed by a tubular sidewall, a valve seat, and a plurality of injection ports extending through the sidewall through which materials can be injected laterally. A check valve spool is arranged for sliding movement within the interior space for preventing back-flow of material into the interior space. The spool is seated on the valve seat and covers the injection ports in a first position, and is unseated from the valve seat with the injection ports uncovered in a second position. The spool is responsive to pressure changes of the injected materials.
    Type: Application
    Filed: January 3, 2002
    Publication date: July 3, 2003
    Applicant: Kejr, Inc.
    Inventor: Mike B. Carlin
  • Patent number: 6513601
    Abstract: The invention relates to a method for setting a packer (7) in a well bore (1), wherein a production tubing (4) with a packer (7) is located in the well bore (1). Abrading means (11) of the packer (7) is radially expanded and rotated, for rounding the well bore wall (10), and packing means (9) are radially expanded against the rounded well bore wall (10). The invention also relates to a packer (7) to be included in a production tubing (4) in a well bore (1), comprising radially expandable and rotatable abrading means (11) for rounding the well bore wall (10), and radially expandable packing means (9), for sealing between the packer (7) and the rounded well bore wall (10).
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: February 4, 2003
    Assignee: Triangle Equipment AS
    Inventors: Bengt Gunnarsson, Per Olav Haughom, Knut Nesland, Jone Salte
  • Publication number: 20030000694
    Abstract: A metal seal for a wellhead assembly has upper and lower legs extending in opposite directions from each other and a rib extending radially outward from a junction of the legs. A first conical band on the upper leg extends uninterrupted from the rib a selected distance toward a tip of the upper leg. A second conical band on the upper leg extends uninterrupted from the tip of the upper leg toward the first conical band. An annular recess is located between the first and second conical bands. The lower leg also has two conical seal bands separated by a recess.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 2, 2003
    Inventors: Thomas F. Sweeney, Norman Brammer, George Chalmers
  • Patent number: 6494259
    Abstract: A downhole apparatus and method for depositing metal at a desired area in a well casing. In one embodiment the apparatus comprises an oxygen tank filled with oxygen, a fuel tank filled with fuel, and a metal depositing device. An inert gas, such as nitrogen, may be supplied to dampen the heat generated by the metal depositing device. In an alternate embodiment, the apparatus comprises a gas tank with nitrous oxide therein and a sparking device to initiate a decomposition reaction to separate the nitrous oxide into its oxygen and nitrogen components. The metal depositing device may be adapted for flame spraying, plasma spraying or welding. A steering head is provided to reciprocate and rotate the apparatus so that the metal depositing device may be directed to the desired area in the casing. A camera and light are disposed at the bottom of the apparatus so that the interior of a well casing is illuminated and an image is transmitted to the operator for proper actuation of the steering sub.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: December 17, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jim B. Surjaatmadja
  • Patent number: 6382324
    Abstract: A system for permitting deployment of a polished bore receptacle, seal stack and production tubing in a single downhole trip into a wellbore. The system includes a polished bore receptacle, production tubing, a seal stack disposed about the production tubing, and a one trip seal latch that couples the production tubing to the polished bore receptacle. The seal latch includes an outer latch housing and an inner latch housing. The outer housing and inner housing are connected by a releasable coupling device. Thus, the polished bore receptacle can be moved downhole for latching to a packer without insertion of the seal stack into the interior of the polished bore receptacle. Upon latching of the polished bore receptacle to the packer, the coupler may be selectively released to permit insertion of the seal stack into the polished bore receptacle.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: May 7, 2002
    Assignee: Schlumberger Technology Corp.
    Inventor: Steven L. Anyan
  • Patent number: 6318471
    Abstract: A method is disclosed for installing a tubular member, having an upper end and a closed lower end, axially into and through an over-pressured region of the earth by using a mandrel to drive the tubular member from near the bottom, which results in a significant section of the tubular member being pulled through the over-pressured region. In another embodiment, a filler material is inserted into at least a portion of the tubular member, and the tubular member is driven from the upper end, with the filler material assisting the progression of the tubular member through the over-pressured region.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: November 20, 2001
    Assignee: ExxonMobil Upstream Research Co.
    Inventor: Richard D. Raines
  • Patent number: 6283218
    Abstract: A locating and locking mandrel and associated nipple provide for positioning an item of equipment in large bore and high weight conditions. In a described embodiment, a locating and locking mandrel includes at least one collect which is configured to cooperatively engage an internal profile of a nipple. The collect is capable of supporting the weight of the item of equipment until at least one locking member of the mandrel is engaged with another internal profile of the nipple. A seal of the mandrel is received in a seal bore of the nipple prior to insertion of the locating member or locking member into the seal bore, thereby preventing damage to the seal bore.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: September 4, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Leo G. Collins
  • Patent number: 6247537
    Abstract: High pressure fluid seals for sealing against a bit guide in wellhead and a method of using the seals are described. The high pressure fluid seals are primarily intended for use with a blowout preventer protector. The high pressure fluid seals are elastomeric material bonded to an end of a mandrel for insertion into the wellhead. The end of the mandrel includes an annular ridge that protrudes into the elastomeric seal to inhibit the seal from being extruded away from the bore when the elastomeric seal is seated against the bit guide and the bore is subjected to elevated fluid pressures. The advantage is a high pressure fluid seal that ensures packoff against a bit guide even if the bit guide is worn but still serviceable. A further advantage is a more secure seal that improves safety and enables the use of higher pressures during well stimulation.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: June 19, 2001
    Inventor: L. Murray Dallas
  • Patent number: 6202745
    Abstract: Wellhead apparatus is shown to comprise a casing hanger releasably latched to a running tool for lowering, landing and locking within the bore of a housing so as to suspend an inner casing which is suspended from the hanger within an outer casing string to which the housing is connected. The hanger includes a mandrel carrying a lock ring for locking in a recess in the housing bore, and a seal sleeve is carried by the mandrel for movement between an upper position to permit cement to be circulated through a space between the mandrel and a lower position closing the space. The tool includes a body carrying a latch ring which is held within a groove in the bore of the mandrel as the hanger is lowered and locked within the housing bore, and which may be actuated to lower the sleeve into sealed position and release the latch ring for retrieval of the tool, from the hanger within the well bore.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: March 20, 2001
    Assignee: Dril-Quip, Inc
    Inventors: Larry E. Reimert, Charles E. Robinson