With Controllable Passage Between Central Chamber And Space Below Packer Patents (Class 166/142)
  • Patent number: 9725980
    Abstract: The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole for providing zone isolation between a first zone and a second zone of the borehole, comprising a tubular part for mounting as part of the well tubular structure and having an expansion opening, an expandable sleeve surrounding the tubular part, each end of the expandable sleeve being connected with the tubular part, and an annular barrier space between the tubular part and the expandable sleeve, wherein the annular barrier further comprises a pressure intensifying means having an inlet in a first end in fluid communication with the expansion opening and having an outlet in a second end in fluid communication with the annular barrier space.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 8, 2017
    Assignee: Welltec A/S
    Inventors: Jørgen Hallundbæk, Paul Hazel, Ricardo Reves Vasques
  • Patent number: 9650859
    Abstract: A downhole tool system includes a base tubular that includes a bore therethrough; a centralizer positioned to ride on the base tubular, the centralizer expandable to contact a wellbore wall and adjust a location of the downhole tool system relative to the wellbore wall based on a first fluid pressure supplied through the bore; and a liner top assembly positioned to ride on the base tubular, the liner top assembly including a wellbore liner and a pack-off element, the pack-off element expandable to at least partially seal a liner top of the wellbore liner to the wellbore wall based on a second fluid pressure supplied through the bore.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: May 16, 2017
    Assignee: Saudi Arabian Oil Company
    Inventor: Shaohua Zhou
  • Patent number: 9546532
    Abstract: A liner top packer is configured to be secured in a liner string, such as in a liner drilling operation. The packer is actuated from within the liner or packer body. An actuator assembly includes an inner piston, an actuator housing, and an outer piston. A tubular setting tool is moved upwardly through the inner piston, and dogs on the setting tool allow for force to be applied to the inner piston, pressurizing fluid and forcing it to the outer piston to compress a pack off element. The actuator assembly is removed by upward force applied by a foot of the setting tool on the inner piston, the actuator housing, or any other component of the actuator assembly.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: January 17, 2017
    Assignee: Schlumberger Technology Corporation
    Inventor: Michael E. Moffitt
  • Publication number: 20140332228
    Abstract: Zone isolation is a leading concern for operators that wish to fluidly treat a well. By utilizing a ported sliding sleeve assembly that is highly resistant to leaking after being opened and closed through multiple cycles a wellbore may be accessed at any ported sliding sleeve assembly location without plugging the wellbore below the ported sliding sleeve assembly and will allow any ported sliding sleeve assembly to be accessed in any order.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Inventor: Roger Antonsen
  • Publication number: 20140209327
    Abstract: A method includes in a single trip running a completion system having an internal bore into a wellbore that penetrates a formation zone, the completion system having an upper completion connected to a lower completion, setting an isolation packer forming a barrier above the formation zone, displacing the annulus fluid above the set isolation packer and then setting an upper packer thereby providing a completion barrier above the set isolation packer. The annulus fluid may be displaced prior to setting an upper completion packer.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Dinesh R. Patel
  • Publication number: 20140102723
    Abstract: Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventor: Todd Anthony Stair
  • Publication number: 20140076546
    Abstract: A drill stem test string may include a tubular body having an axial bore formed at least partially therethrough. An axial flow valve may be coupled to the first tubular body and allow fluid to flow axially through the first tubular body when in an open state and prevent fluid from flowing axially through the first tubular body when in a closed state. A radial flow valve may be coupled to the first tubular body and allow fluid to flow radially through the first tubular body when in an open state and prevent fluid from flowing radially through the first tubular body when in a closed state. A seal assembly may be coupled to an outer surface of the first tubular body and positioned between a lower end of the first tubular member and the first radial flow valve.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: Schlumberger Technology Corporation
    Inventor: Dinesh Patel
  • Publication number: 20140020890
    Abstract: A sampling assembly of a single packer assembly may have more guard drains than sampling drains. The single packer assembly having the sampling assembly may be deployed in a wellbore formed in a subterranean formation, and the single packer assembly may be deployed on a wireline cable or another deployment or conveyance. The number and the area of the sampling drains, the number and the area of the guard drains, and the positions of the sampling drains and the guard drains may be designed so that the guard drains which are operational may provide a fluid intake rate exceeding a predetermined threshold if one of the guard drains is congested and/or blocked.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 23, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Pierre-Yves Corre, Stephane Metayer, Alexander F. Zazovsky, Stephen Yeldell, Darya Mustafina
  • Patent number: 8490688
    Abstract: A seal includes a mandrel; an element disposed radially adjacent the mandrel; a chamber defined between the mandrel and the element; and a pressure regulator in fluid communication with the chamber, the regulator configured to resist fluid flow to a selected threshold pressure related to element expansion and method.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: July 23, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Sean L. Gaudette
  • Publication number: 20130043020
    Abstract: A well is drilled and casing installed utilizing a casing drilling technique. A bottom hole assembly having a drill bit and a fluid diverter is secured to a string of drill pipe and installed within a casing string. Drilling fluid is pumped down the drill pipe string to cause the drill bit to rotate and drill the well while the fluid diverter is in a drilling mode position, At the total depth for the casing string, the operator moves the fluid diverter to a cementing position and pumps cement down the drill pipe and up the casing string annulus. After cementing, the operator moves the fluid diverter to a packer set position and again pumps drilling fluid down the drill string to set the packer.
    Type: Application
    Filed: October 5, 2012
    Publication date: February 21, 2013
    Inventor: Erik P. Eriksen
  • Publication number: 20130025887
    Abstract: A packer arrangement for forming a seal between an inner member and an outer tubular string in a borehole includes an outer tubular string member having a chamber portion; and a packer device disposed at least partially within the chamber portion and including a sealing element for forming a seal against an inner member, the packer device including a degradable layer, the degradable layer temporarily and at least partially protecting the sealing element and method of establishing a seal.
    Type: Application
    Filed: July 26, 2011
    Publication date: January 31, 2013
    Applicant: Baker Hughes Incorporated
    Inventors: Bennett Richard, James Doane
  • Publication number: 20130025850
    Abstract: A well is drilled and casing installed utilizing a casing drilling technique. A bottom hole assembly having a drill bit and a fluid diverter is secured to a string of drill pipe and installed within a casing string. Drilling fluid is pumped down the drill pipe string to cause the drill bit to rotate and drill the well while the fluid diverter is in a drilling mode position. At the total depth for the casing string, the operator moves the fluid diverter to a cementing position and pumps cement down the drill pipe and up the casing string annulus. After cementing, the operator moves the fluid diverter to a packer set position and again pumps drilling fluid down the drill string to set the packer.
    Type: Application
    Filed: October 5, 2012
    Publication date: January 31, 2013
    Inventor: Erik P. Eriksen
  • Publication number: 20120234555
    Abstract: Method, system and apparatus to produce hydrocarbons includes a packer apparatus with a swellable packer element around primary and secondary flow paths, the packer is configured to block flow in a portion of a wellbore annulus. The method includes disposing sand control devices having shunt tubes and a packer within a wellbore adjacent to a subsurface reservoir. The packer is then set within an interval, which may be an open-hole section of the wellbore, and gravel packing the sand control devices in different intervals. Hydrocarbons are produced by passing hydrocarbons through the sand control devices with different intervals providing zonal isolation. In some embodiments, intervals may be alternatively packed and plugged, wherein the plugged intervals are not packed.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Inventors: Bruce A. Dale, Michael D. Barry, Charles S. Yeh, Jon Blacklock, Darren F. Rosenbaum, Michael T. Hecker, David C. Haeberle, Manh V. Phi, Michael J. Siegman
  • Publication number: 20110290480
    Abstract: Distinctive and analytically distinguishable water-soluble and oil-soluble tracer compositions are applied as coatings to the exterior surface of one or more lengths of production tubing installed in a horizontal well bore between open-hole packers adjacent one or more inflow control devices, (ICD), whereby water and/or oil contacting one or more of the respective tracer coatings and passing a faulty open-hole packer seal will solubilize the tracer coating(s) and be detectable by appropriate tests on the produced water and/or hydrocarbon fluids at the earth's surface.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 1, 2011
    Inventors: Al-Walid Abdullah Al-Gouhi, Kirk M. Bartko, Drew Hembling
  • Patent number: 7909095
    Abstract: A valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string. A valve device includes an openable and closable flowpath for selectively permitting and preventing flow between an interior and exterior of the valve device, and a lock assembly which prevents the flowpath from being opened greater than a predetermined number of times. A method of testing at least one annular seal in an annulus formed between a tubular string and a wellbore wall includes the steps of: sealingly engaging the annular seal to thereby prevent flow through the annulus across the annular seal; and applying a pressure differential across the annular seal to thereby test the annular seal, the pressure differential being applied via a valve device interconnected in the tubular string.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: March 22, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William M. Richards, William D. Henderson
  • Patent number: 7876198
    Abstract: An adaptive intelligent electronic horn (100) comprises a mechanical soniferous apparatus (112), an electromagnetic coil (106), a driver circuit (104) and an oscillating circuit (102). A sensor (110) is provided between the mechanical soniferous apparatus (112) and the oscillating circuit (102). An on-off ratio adjusting circuit (108) is provided at the input end of the oscillating circuit (102). The sensor (110) measures the oscillation frequency of the mechanical soniferous apparatus (112) and feedbacks the measured oscillation frequency signal to the oscillating circuit (102). The on-off ratio adjusting circuit (108) controls a pulse width of an oscillation signal from the oscillating circuit (102) based on a voltage of power supply and/or an ambient temperature. The oscillating circuit (102) outputs corresponding oscillation signal to the driver circuit (104) based on the oscillation frequency signal received from the sensor (110) and/or the control signal from the on-off ratio adjusting circuit (108).
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: January 25, 2011
    Inventor: Hongwei Zhao
  • Publication number: 20100314135
    Abstract: A well tool with multi-stage remedial system improves the durability of a subterranean well tool having an expanded elastomeric member, such as a packer, for use inside a tubular member. The well tool with multi-stage remedial system has a plurality of mandrel members shiftable within the tubular member for anchoring and for setting the seal system. A floating tandem mounted annularly around the lower mandrel members has one end (upon shifting) proximate an end of the seal system, and the floating tandem has an opening to ambient bottom-hole-pressure of the subterranean well. A locking tandem is interposed with the floating tandem and at least one of the lower mandrel members. The floating tandem and the locking tandem together assist in abating elastomeric member extrusion under high temperature, high pressure environments as well as other conditions lending to failure within the well.
    Type: Application
    Filed: August 23, 2010
    Publication date: December 16, 2010
    Inventors: James V. Carisella, Kevin Morrill
  • Patent number: 7770637
    Abstract: The completion system for delivering lifting gas supplied from surface via a casing annulus thru the packer for injecting to the wellbore at bottom hole as lifting gas for maximizing hydrocarbon producing from a subterranean well while maintaining integrity and serviceability as a typical gas lift well. A single completion, which uses the same tubing string for both producing the well and delivering lifting gas to the wellbore at downhole. The top section of the tubing is used for producing the well while the bottom section of the tubing is used for delivering lifting gas for injecting at bottom hole. The lifting gas will be injected to the wellbore proximately at perforation intervals for helping unloading liquid and producing the well. The use of modified equipment named “TK Bypass Mandrel” and “JP Bypass Nipple Sub” allows delivering and controlling of the lifting gas for injecting at bottom hole via a single tubing string.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 10, 2010
    Assignee: PTT Exploration and Production Public Company Limited
    Inventors: Pramote Phoi-montri, Jose Piedras, Chatchai Kongdachudomkul, Thanawee Kreethapon
  • Patent number: 7762323
    Abstract: A downhole plug that can include a body and an element system disposed about the body. The plug can further include a first and second back-up ring member having two or more tapered wedges. The tapered wedges can be at least partially separated by two or more converging grooves. First and second cones can be disposed adjacent the first and second back-up ring members.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 27, 2010
    Inventor: W. Lynn Frazier
  • Publication number: 20100155050
    Abstract: A flow back plug, a bridge plug, a ball drop plug and plug with a disintegratable check therein are made from a common subassembly including, in some embodiments, a mandrel, a slips/seal section, a setting assembly and a mule shoe. In other embodiments, the common components are a mandrel, a slips/seal section and a mule shoe. To make the flow back plug, a ball check is placed in the mule shoe. To make the bridge plug, an obstruction is inserted in the mule shoe. To make the ball drop plug, the mule shoe is left unobstructed so any ball dropped in a well seats in a tapered inlet to the mandrel. To make a plug with a disintegratable check, a ball dropped in the well is of a type that disintegrated in frac liquids. The setting assembly includes a setting rod connected to a setting device in the mandrel passage. When the plug is expanded into sealing engagement with a production string, the setting rod pulls out of the setting device leaving a passage through the mandrel and through the setting device.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Inventor: W. Lynn Frazier
  • Publication number: 20100032153
    Abstract: A completion system delivers lifting gas supplied from the surface via a casing annulus through the packer for injecting to the wellbore at bottom hole. So, lifting gas maximizes hydrocarbon producing from a subterranean well while maintaining integrity and serviceability as a typical gas lift well. More specifically, a single completion system uses the same tubing string for both producing the well and delivering lifting gas to the wellbore at downhole. The top section of the tubing is used for producing the well, while the bottom section of the tubing is used for delivering lifting gas for injecting at bottom hole. The lifting gas will be injected to the wellbore proximately at perforation intervals for helping unloading liquid and producing the well. The use of modified equipment named “TK Bypass Mandrel” and “JP Bypass Nipple Sub” allows delivering and controlling of the lifting gas for injecting at bottom hole via a single tubing string.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 11, 2010
    Applicant: PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LTD.
    Inventors: Pramote Phloi-montri, Chatchai Kongdachudomkul, Thanawee Kreethapon, Pattana Pittrapan, Suwin Sompopsart, Wararit Toempromraj
  • Publication number: 20090294128
    Abstract: A method, system and apparatus associated with the production of hydrocarbons are described. One apparatus includes a swellable packer element around a primary and a secondary flow path, wherein the packer is configured to block flow in a portion of a wellbore annulus. One method includes disposing sand control devices having shunt tubes and a packer within a wellbore adjacent to a subsurface reservoir. The packer is then set within an interval, which may be an open-hole section of the wellbore. With the packer set, gravel packing of the sand control devices in different intervals may be performed. Then, hydrocarbons are produced from the wellbore by passing hydrocarbons through the sand control devices with the different intervals providing zonal isolation. In some embodiments, intervals may be alternatively packed and plugged, wherein the plugged intervals are not packed. In addition, the method may also include disposing the sand control devices and packer into the wellbore in conditioned drilling fluid.
    Type: Application
    Filed: December 15, 2006
    Publication date: December 3, 2009
    Inventors: Bruce A. Dale, Michael D. Barry, Charles S. Yeh, Jon Blacklock, Darren F. Rosenbaum, Michael T. Hecker, David C. Haeberle, Manh V. Phi, Michael J. Siegman
  • Publication number: 20090095467
    Abstract: The present invention is about the completion system for delivering lifting gas supplied from surface via a casing annulus thru the packer for injecting to the wellbore at bottom hole as lifting gas for maximizing hydrocarbon producing from a subterranean well while maintaining integrity and serviceability as a typical gas lift well. The present invention is a single completion, which uses the same tubing string for both producing the well and delivering lifting gas to the wellbore at downhole. The top section of the tubing is used for producing the well while the bottom section of the tubing is used for delivering lifting gas for injecting at bottom hole. The lifting gas will be injected to the wellbore proximately at perforation intervals for helping unloading liquid and producing the well. The use of modified equipment named “TK Bypass Mandrel” and “JP Bypass Nipple Sub” allows delivering and controlling of the lifting gas for injecting at bottom hole via a single tubing string.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Applicant: PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LIMITED
    Inventors: Pramote Phoi-montri, Jose Piedras, Chatchai Kongdachudomkul, Thanawee Kreethapon
  • Patent number: 7478678
    Abstract: A setting mechanism is made to respond to hydrostatic pressure. Upon reaching a predetermined depth corresponding to a given pressure, a pilot piston is shifted to allow well fluids to bypass a first set of piston seals and reach a second set. A shear pin that held the pilot piston in position is broken as the hydrostatic pressure increases with greater depth attained. However, the shifting of the pilot piston does not cause the main piston in the assembly to set the downhole tool. The action of the well fluids on the secondary seal set on the pilot piston eventually fail the second seal set allowing hydrostatic pressure to bypass them and actuate the main piston that will set the downhole tool. Raising the tool from the wellbore allows the spring acting on the pilot piston to seal in a bore to isolate hydrostatic pressure from the operating piston.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: January 20, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Amy L. Farrar, Douglas J. Murray, Gregory C. Badke
  • Publication number: 20080217001
    Abstract: A flow arrangement (10, 12) for use in a well through one or more underground reservoirs, and where the arrangement (10, 12) is designed to throttle radially inflowing reservoir fluids produced through an inflow portion of the production tubing in the well, the production tubing in and along this inflow portion being provided with one or more arrangements (10, 12). Such an arrangement (10, 12) is designed to effect a relatively stable and predictable fluid pressure drop at any stable fluid flow rate in the course of the production period of the well, and where said fluid pressure drop will exhibit the smallest possible degree of susceptibility to influence by differences in the viscosity and/or any changes in the viscosity of the inflowing reservoir fluids during the production period.
    Type: Application
    Filed: May 22, 2008
    Publication date: September 11, 2008
    Inventors: Arthur Dybevik, Ove Sigurd Christensen, Terje Moen
  • Patent number: 7284619
    Abstract: A fluid actuated packer 10 and collar 36 assembly is provided for positioning on a tubular member 12. The collar 36 is moveable by a running tool 110 positioned within the tubular member and has a closed position and a packer activate position, fluidly connects the collar 36 to the packer element 14 when in the packer activate position, and closes off the flow path 26 when in the closed position. According to a method of the invention, the flow path 26 extends from the collar to the expandable packer element 14 and is open to activate the packer element 14 and closes off the flow path 26 when in the closed position.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: October 23, 2007
    Assignee: Tam International, Inc.
    Inventors: Charles O. Stokley, Paul A. Reinhardt, Doyle R. Warren, Jackie D. Newberry
  • Patent number: 6918440
    Abstract: One embodiment of the present disclosure describes a test assembly including an inflatable packer. An internal control sleeve controls flow of drilling fluid through an inflation port to inflate and deflate the packer. A shifting tool run on a slick line moves the sleeve. The packer has one end attached to an external sliding sleeve which moves upon packer inflation to expose a formation fluid port through which formation testing is performed. After testing and packer deflation, a circulation port may be opened to recover produced fluids up the drill string. A second sleeve controls flow through the circulation port and is controlled by a second shifting tool run on slick line. Other embodiments include a circulation assembly with a sliding sleeve opened and closed by one shifting tool to control circulation and the sliding sleeve itself and its operation.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: July 19, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Virgilio Garcia-Soule, Timothy R. Carlson, Chuck MacPhail, Imre I. Gazda
  • Patent number: 6722438
    Abstract: A method of removing formation damage through the controlled injection of fluids into the formation, followed by a controlled sudden release of pressure in the formation, an under-balanced surge, which causes fluid and damaging materials to flow back into the well bore. This method is most effective when repeated more than once.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: April 20, 2004
    Inventor: David Sask
  • Patent number: 6719046
    Abstract: A apparatus is disclosed for attaching and sealing to the upper end of the casing allowing the inner string to be run through the apparatus. The apparatus provides a latch for anchoring the inner string and a seal for sealing on the inner string. Also disclosed is a flow path for providing for circulation of fluid between the inner string and casing annulus. Also disclosed is an inner string sub that provides a profile anchoring and sealing the inner string by the apparatus.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: April 13, 2004
    Inventor: Albert Augustus Mullins
  • Publication number: 20030192697
    Abstract: An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 16, 2003
    Applicant: Weatherford/Lamb, Inc
    Inventors: William A. Grubb, David M. Haugen, Corey E. Hoffman
  • Patent number: 6530428
    Abstract: An apparatus for in situ borehole testing having a drill string with drill pipe and drill bit. An upper sleeve and lower sleeve are telescopically coupled together. A valve seat is located in an interior passage and closes the interior passage when a valve member is seated in the valve seat. A plurality of separate inflatable packers are coupled to the lower sleeve and activated when the valve member is seated in the valve seat. A latching collet having teeth positively interlocks with spline teeth affixed to the inner wall of the upper sleeve. A hydraulic valve assembly is attached to the lower sleeve and is activated by fluid in one of a plurality of separate fluid chambers which communicate with and inflate the separate packers.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: March 11, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jeffery D. Baird
  • Publication number: 20030037932
    Abstract: The present invention, therefore, discloses in certain, but not necessarily all, embodiments a method for reclaiming a borehole extending from an earth surface into the earth, part of which borehole is in a lost circulation zone, the method including closing off the borehole to fluid flow above the lost circulation zone by installing a packer system with an inflatable packer element, a plurality of ribs mounted around the inflatable packer element, and a valve apparatus in the borehole above the lost circulation zone, the packer system made of drillable material, inflating the inflatable packer element with cement, and allowing the cement to set so that the inflatable packer and the valve apparatus effectively seal off the borehole to fluid flow.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 27, 2003
    Inventors: Brett Guillory, David Ward
  • Publication number: 20020195248
    Abstract: A collar for injecting fluid, such as a formation treating fluid, into a wellbore, and a method for using same. The collar is disposed between the upper and lower packing elements of a pack-off system during the treatment of an area of interest within a wellbore. The collar first comprises an inner mandrel running essentially the length of the collar. The inner bore of the collar is in fluid communication with the annular region between the collar and the surrounding perforated casing by a set of actuation ports. A second set of ports, known as frac ports, is disposed within the mandrel. In accordance with one aspect of the invention, the collar further comprises a tubular case which substantially seals the frac ports in a first position, and slidably moves along the outer surface of the mandrel in order to expose the frac ports in a second position. In operation, the upper and lower packing elements are set at a first fluid pressure level.
    Type: Application
    Filed: February 11, 2002
    Publication date: December 26, 2002
    Inventors: Gary D. Ingram, Corey E. Hoffman, Richard L. Giroux
  • Patent number: 6386292
    Abstract: A method and an apparatus for connection with a tubing string for use in a wellbore for regulating the flow of a fluid within a wellbore annulus between the tubing string and the wellbore. The apparatus includes a tubing rotator and at least one packer valve for connection with the tubing string, wherein the packer valve is actuatable through rotation of the tubing string by the tubing rotator. Rotation of the tubing string actuates the packer valve between a closed flow position wherein the packer valve substantially seals the wellbore annulus and an open flow position wherein the flow of the fluid is permitted through the wellbore annulus. The method includes the steps of suspending the tubing string in the wellbore by the tubing rotator, connecting the packer valve with the tubing string and rotating the tubing string by the tubing rotator in the first direction to actuate the packer valve to the closed flow position.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: May 14, 2002
    Inventor: Linden H. Bland
  • Patent number: 6343650
    Abstract: A test, drill and pull system for testing a well formation or zone of interest and further drilling of the well in a single trip into the wellbore. The system includes a surface readout tester valve, a rotation-operated reversing valve, a resettable packer, a packer lockout, a perforated anchor and a drill bit. In operation, the apparatus is run into the bottom of the well adjacent to the formation or zone of interest and the packer set and unset as desired. With the packer set, a surface readout tester valve probe is lowered into the apparatus on a wireline and latched into the tester valve so that multiple testing operations may be carried out if desired. After testing, the fluid recovery may be reversed out and analyzed by actuating the reversing valve by rotation of the tool string. Further, rotation engages the packer lockout such that when weight is picked upon the packer, the packer cannot be reset.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: February 5, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Paul D. Ringgenberg
  • Patent number: 6334488
    Abstract: A bi-directional plug blocks the flow of fluid through a flow bore of a tubing string and can be opened by simple mechanical means requiring no external tools. A piston is slidably mounted in a piston housing and fixed in a first position with a plurality of shear screws. An atmospheric chamber formed within the piston housing creates a pressure differential causing the shear screws to fail when a certain pressure is applied to the surface area of the piston. When the shear screws break, the piston accelerates and strikes a scored, dome-shaped plug. The piston penetrates the plug, permanently pressing and housing pieces of the plug against the wall of a plug housing and opening the flow bore of the plug to fluid.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: January 1, 2002
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Roland Richard Freiheit
  • Patent number: 6269878
    Abstract: An inflatable packer with a packer body, an inflatable bladder mounted around the packer body, a bladder support mounted around the inflatable bladder, the packer body, the inflatable bladder and the bladder support made of drillable material. A method for reclaiming a borehole extending from an earth surface into the earth, part of which is in a lost circulation zone, the method including closing off the borehole to fluid flow above the lost circulation zone by installing a packer system with an inflatable packer element and a valve apparatus in the borehole above the lost circulation zone, inflating the inflatable packer element with cement, and allowing the cement to set so that the inflatable packer and the valve apparatus effectively seal off the borehole to fluid flow.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: August 7, 2001
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Mark Lewis Wyatt, Paul James Wilson, Thad Joseph Scott, Robert Thomas Brooks, Clayton Plucheck, Guy L. McClung, III
  • Patent number: 6065544
    Abstract: A system for relieving pressurized fluid entrapped in a annular space between a casing (12) and the surrounding wall (11) of a well bore hole (10) during deployment of a packer exterior (14) of the casing (12) for sealing engagement with the wall (11). When packer (14) is inflated in a zone (17) where fluid is entrapped, such as an intermediate packer between two previously inflated packers (13, 14), the squeeze pressure developed by the inflating packer (14) has been found to be sufficient to prevent effective and lasting sealing of the intermediate packer (14). The present system includes a valve mechanism (35) which is activated by the pressurized fluid providing for inflating the packer (14) to open a passageway (90, 94, 91) to bleed the entrapped fluid into the casing (12) and to then close the passageway (90, 94, 91) as inflation of the intermediate packer (14) is completed.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: May 23, 2000
    Inventor: Marvin L. Holbert
  • Patent number: 5887660
    Abstract: The liner packer assembly and method includes a liner packer having a tubular body with an aperture for the flow of wellbore fluids. A packing element is movably disposed on the tubular body between an open position on one side of the aperture for allowing wellbore fluids to flow through the aperture to a closed position on the other side of the aperture for closing flow through the aperture and for packing off the annulus between the packer and outer casing. During the cementing operation, drilling fluids and cement are allowed to flow through the annular area formed by the packer and outer casing and also flow through the aperture in the tubular body of the packer and up the inside diameter or inner annular area formed by the packer and inner tubular string. The inner and outer annular areas around packer approximately the flow area below the packer between the inner tubular string and the outer casing.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: March 30, 1999
    Assignee: Smith International, Inc
    Inventors: John M. Yokley, Mark J. Murray, Ronald J. Selby, Robert Richard Olman
  • Patent number: 5865254
    Abstract: A downhole valve is disclosed for use in a tubing-conveyed string of tools in a well bore, constructed to be actuated to open under pressure forces by dropping a drop bar from the well surface through the tubing. The valve, deployed in the well in a closed condition, has a frangible member arranged to be broken by the drop bar to enable the valve to open. The valve opens under well pressure forces when well pressure exceeds tubing pressure, and opens under tubing pressure forces when tubing pressure exceeds or substantially equals well pressure. The valve is particularly useful when opened in conjunction with the detonation of a perforating gun for overbalanced or underbalanced well perforation. Methods of operating a string of tools including the valve are also disclosed.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: February 2, 1999
    Assignee: Schlumberger Technology Corporation
    Inventors: Klaus B. Huber, Laurent E. Muller
  • Patent number: 5810082
    Abstract: A packer is disclosed which uses applied pressure to set the slips and initiate a compressive force on the sealing elements. The compressive force applied to the sealing elements moves components above the sealing elements and allows the available hydrostatic pressure in the wellbore to create an opposing force on the sealing elements to ensure that they properly set. The sealing elements are mounted directly to the packer body, thus eliminating a leakpath from the fluid pressure application port which is located below the sealing elements on the packer body. Various lock rings hold the set of the packer to avoid the creation of boost forces on the sealing elements from applied or induced pressures from above or below the sealing elements. Movement of the body is not required to accomplish setting of this packer. In applications with low hydrostatic pressure, the annulus can be pressurized to assist in obtaining the necessary pack-off pressure.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: September 22, 1998
    Assignee: Baker Hughes Incorporated
    Inventor: Henry Joe Jordan, Jr.
  • Patent number: 5803177
    Abstract: The present invention provides a tool and methods of placing a treatment fluid in a subterranean formation penetrated by a well bore by way of selected perforations extending from casing cemented in the well bore into the formation. The fluid placement tool includes a fluid flow passageway extending therethrough, at least one resilient self expandable cup type packer attached thereto and a valve disposed in the fluid flow passageway which closes the passageway when a closing plug is dropped into the tool. The placement tool is capable of releasing the cup type packer whereby it provides a seal between the tool and the casing when a first predetermined fluid pressure is applied to the tool after a closing plug is dropped therein and opening the fluid flow passageway whereby the treatment fluid is discharged from the tool below the packer when the fluid pressure is increased to a second predetermined fluid pressure. Methods of using the tool are also provided.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: September 8, 1998
    Assignee: Halliburton Energy Services
    Inventors: Iosif J. Hriscu, Donald W. Winslow
  • Patent number: 5787979
    Abstract: A new wellbore cementing system has been developed which includes, in certain embodiments, a plug container with a flow diverter for diverting a portion of flowing fluid away from plugs in the plug container; a plug set system with internal sleeves or dart receivers with shearable parts for shearing to selectively release plugs--all in certain embodiments made of non-metal material and/or plastic; a swivel equalizer with internal valving to isolate a plug set (or any other item) from torque and to relieve pressure below the swivel equalizer; and unique burst tube systems for selectively controlling fluid flow and plug system operation.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: August 4, 1998
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard L. Giroux, Peter Budde
  • Patent number: 5711375
    Abstract: The present invention relates to tools and methods for stabilizing incompetent or otherwise unstable subterranean zones or formations penetrated by a well bore during drilling. The methods basically comprise drilling the well bore through an unstable subterranean zone or formation when it is encountered, pumping a fluid through a well stabilization tool while moving the tool through the portion of the well bore in the unstable zone or formation whereby fluid jets formed by the well stabilization tool enlarge the diameter of the well bore by fluid jet erosion, pumping a hardenable cementitious material through the well stabilization tool while moving the tool through the enlarged portion of the well bore whereby the enlarged portion is filled with the hardenable cementitious material, allowing the cementitious material to harden and then drilling the well bore through the hardened cementitious material.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: January 27, 1998
    Assignee: Halliburton Company
    Inventors: Krishna M. Ravi, Robert M. Beirute, Alan B. Duell, Henry E. Rogers, Dick A. Murray, Earl D. Webb
  • Patent number: 5505263
    Abstract: A packer set safety valve assembly for controlling annular and tubing flows within a subterranean wellbore is disclosed. The packer set safety valve assembly controls the annular and tubing flows through dual flow paths. The assembly includes a means, that is remotely actuatable, to secure the assembly within the wellbore, a means, also remotely actuatable, the allows selective control of fluid flow in the dual flow paths, and a means, remotely actuatable as well, to unsecure the assembly from within the wellbore. The packer set safety valve assembly is a "fail closed" design which prevents flows through the dual flow paths when the fluid flow control means is not actuated to allow flow.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: April 9, 1996
    Inventors: Pat M. White, Robert W. Crow
  • Patent number: 5390737
    Abstract: A downhole tool apparatus and methods of drilling the apparatus. The apparatus may include, but is not limited to, packers and bridge plugs utilizing non-metallic components. The non-metallic components may include but are not limited to the center mandrel having an unmachined, molded central opening therethrough. In a preferred embodiment, a sliding valve is disposed on an outer surface of the center mandrel for opening and closing a valve port. An overshot is used to selectively actuate the sliding valve. Methods of installation and drilling out of the apparatus are also disclosed.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: February 21, 1995
    Assignee: Halliburton Company
    Inventors: Ricky D. Jacobi, Kevin T. Berscheidt, Donald F. Hushbeck
  • Patent number: 5383520
    Abstract: A packer apparatus with a circulating port. A housing of the packer has inflation passages, circulating passages, treating fluid passages, and equalizing passages defined therein. In a straddle packer embodiment, upper and lower packers are mounted on the housing on opposite sides of an outlet of the treating fluid passage. A circulation valve with a sliding differential pressure actuated valve sleeve is disposed below the packers. An inner mandrel is slidably received in the central opening of the housing. The mandrel has a mandrel bore and has upper inflation and circulating ports, lower inflation ports, upper and lower equalizing ports, a treating port and lower circulating ports, all of which communicate with the mandrel bore. The valve sleeve has a valve port. A lug and endless J-slot is operably associated with the housing and mandrel for controlling a telescoping position of the mandrel relative to the housing in response to reciprocation without rotation of the mandrel relative to the housing.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: January 24, 1995
    Assignee: Halliburton Company
    Inventors: James C. Tucker, Donald W. Winslow, Jeffrey S. Walter, Steven L. Schwegman
  • Patent number: 5253706
    Abstract: A release mechanism is described for releasing a lock member (10) which secures a first body member (5) to a second body member (1). The release mechanism comprises a reciprocal member (6) which is mounted on the first body member (5) for movement relative to the first body member (5). A catch mechanism (8, 11, 12) is also provided which is movable between the first position where the lock member (10) is fixed and the second position where the lock member (10) is released. The reciprocal member (6) moves in a first direction when a force is applied to the reciprocal member (6) and moves in a second direction when the force is removed. Repeated reciprocal movement of the reciprocal member (6) in the first and second directions effects movement of the catch mechanism (8, 11, 12) from the first position to the second position to release the lock member (10) to permit relative movement between the first and second body members (5, 1).
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: October 19, 1993
    Assignee: Well-Equip Limited
    Inventor: Michael A. Reid
  • Patent number: 5156207
    Abstract: A hydraulically controlled apparatus responsive to changes in well annulus pressure is disclosed. The apparatus is run into a well bore intersecting an oil and gas reservoir with perforations communicating the oil and gas reservoir with the well bore. The apparatus has an associated packer to effectively seal off the perforations in the well bore. The apparatus contains a cylindrical housing with ports on the top end and bottom end, and an operating mandrel is disposed therein. A disengaging sleeve operably connected with the operating mandrel allows the ports contained on the lower portion of the cylindrical housing below the packer to be opened and closed selectively, thereby allowing communication of the reservoir pressure through the apparatus. The disengaging sleeve and operating mandrel are activated by either an increase or decrease in annulus pressure.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: October 20, 1992
    Assignee: Halliburton Company
    Inventors: David M. Haugen, Arnold G. Edwards, Charles W. Kinney
  • Patent number: 4969517
    Abstract: A well casing hanger/packoff apparatus with ports through which fluids can be circulated during installation and cementing operations, and a sleeve-type valve that can be moved axially to open or close the ports as desired.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: November 13, 1990
    Assignee: FMC Corporation
    Inventors: William A. Valka, Glen C. Wieland