Patents by Inventor David W. Teale

David W. Teale has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11519234
    Abstract: A bottom hole assembly can include a mill and a whipstock having an upper end and an opening. A retractable pin extends from the mill into the opening. A section of the whipstock is separable from the whipstock in response to a force applied to the mill. The section is positioned between the opening and the upper end. A method can include positioning a bottom hole assembly in a well, the bottom hole assembly including a whipstock releasably secured to a mill, and then releasing the mill from the whipstock by separating a section of the whipstock from a remainder of the whipstock. Another method can include conveying a bottom hole assembly into a well, setting an anchor, then applying pressure to a hydraulic release mechanism, and then applying a force to the mill, thereby separating a section of the whipstock from a remainder of the whipstock.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: December 6, 2022
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Jeffery Scott Pray, David W. Teale
  • Publication number: 20220162920
    Abstract: A bottom hole assembly can include a mill and a whipstock having an upper end and an opening. A retractable pin extends from the mill into the opening. A section of the whipstock is separable from the whipstock in response to a force applied to the mill. The section is positioned between the opening and the upper end. A method can include positioning a bottom hole assembly in a well, the bottom hole assembly including a whipstock releasably secured to a mill, and then releasing the mill from the whipstock by separating a section of the whipstock from a remainder of the whipstock. Another method can include conveying a bottom hole assembly into a well, setting an anchor, then applying pressure to a hydraulic release mechanism, and then applying a force to the mill, thereby separating a section of the whipstock from a remainder of the whipstock.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 26, 2022
    Inventors: Jeffery Scott PRAY, David W. TEALE
  • Publication number: 20220145711
    Abstract: A method of separating a downhole tubular includes running a tool into a wellbore to a predetermined location on a work string and actuating flow actuated slips. The method also includes maintaining slips in a set position by providing a first upward force on the work string. The method further includes rotating the work string to separate an upper portion of the tubular from a lower portion using a cutter assembly disposed on the work string below the slips and pulling the upper portion of the tubing and the tool from the wellbore.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Inventors: William Allen SCHULTZ, JR., David W. TEALE, Richard C. DAVIS
  • Patent number: 11248428
    Abstract: A method and apparatus for a locking system for a downhole tool. The locking system includes a first portion having a plurality of displaceable members, a second portion disposed around the first portion; a locked position wherein axial movement between the members is prevented; and an unlocked position wherein axial movement between the members is permitted.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: February 15, 2022
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: William Allen Schultz, Jr., David W. Teale, Richard C. Davis
  • Publication number: 20210285307
    Abstract: A method of positioning a bottom hole assembly in a wellbore includes lowering the bottom hole assembly into the wellbore. The bottom hole assembly has a whipstock, a downhole tool, and a cleaning tool having a cleaning element. The method also includes cleaning at least a portion of a wall of the wellbore using the cleaning tool, and activating the downhole tool to engage the cleaned portion of the wall.
    Type: Application
    Filed: May 27, 2021
    Publication date: September 16, 2021
    Inventors: Kenneth D. HORA, Michael SMALLEY, David W. TEALE, James H. TAYLOR, JR.
  • Publication number: 20210229225
    Abstract: Structures for a tool surface of a downhole tool are constructed from a metal clay molded in a wet state. The wet state clay is a workable combination that can have a braze alloy grain, a tungsten carbide grain, and a binder. Additional cutting inserts can be embedded in the molded clay. Heat treatment applied to the molded metal clay causing the binder to be combusted and consumed. The braze alloy melts and then cools into a fused state with the tungsten carbide grain therein. The structure can affix to the tool surface of the tool by first being fused and then attached by brazing to the tool. Alternatively, the structure can be positioned in a fusible state adjacent the tool surface. When the heat treatment is applied, the structure fuses together and forms a metallurgical bond with the tool surface of the tool.
    Type: Application
    Filed: January 27, 2020
    Publication date: July 29, 2021
    Inventors: David W. Teale, Michael T. Smalley, Richard S. Green, William R. Howie
  • Patent number: 11053741
    Abstract: A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 6, 2021
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Richard C. Davis, Jeremy Lee Stone, James H. Taylor, Jr., William Allen Schultz, Jr., David W. Teale
  • Patent number: 11047210
    Abstract: A bottom hole assembly for use in a wellbore includes a whipstock; a downhole tool coupled to the whipstock; and a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, wherein the downhole tool is configured to engage the cleaned portion of the wall. In one example, the cleaning tool includes a body and a plurality of cleaning elements for cleaning the portion of the wall.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: June 29, 2021
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Kenneth D. Hora, Michael Smalley, David W. Teale, James H. Taylor, Jr.
  • Publication number: 20210189823
    Abstract: A wellhead (10) with a casing head (20) has tubing (15) in its therethrough. A mating component, such as a pack-off (40), installs in the wellhead on the end of the tubing above a casing hanger (30). The bore (42) of the pack-off defines circumferential grooves—each having a canted spring (100A, 100B) disposed therein. The canted springs engaged between the groove and the tubing and restricting relative rotation between the pack-off and the tubing.
    Type: Application
    Filed: May 23, 2018
    Publication date: June 24, 2021
    Inventors: Adam J. HATTEN, David W. TEALE
  • Patent number: 11041353
    Abstract: A method of cutting a tubular includes providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon; extending the blade relative to the cutting tool; rotating the cutting tool relative to the tubular; guiding the cutting structure into contact with the tubular; cutting the tubular using the blade; and limiting extension of the blade.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 22, 2021
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: James Robert Miller, Dan Hugh Blankenship, Jeremy Lee Stone, David W. Teale
  • Publication number: 20210148175
    Abstract: A sleeve can be used as a stop collar on tubing. A fusible element disposed about the inside or outside surface of the collar can be accessed by electrodes via the at least one access point in the collar. An insulator insulates the fusible element from the collar, while the electrodes apply electric current to the fusible element. A fusible material of the fusible element is heated to melting in response to the applied electric current and affixes the collar to the tubing with a metallurgical bond formed from the melting and re-solidifying of the fusible material inside a space between the first circumferential surface of the collar and the opposing circumferential surface of the tubing. The fusible material can be heated to melting directly with the electric current, or an ignitable material activated with the electric current can melt the fusible material.
    Type: Application
    Filed: May 11, 2018
    Publication date: May 20, 2021
    Inventor: David W. TEALE
  • Publication number: 20200386053
    Abstract: A method of manufacturing a whipstock assembly includes cutting a shape of a body plate from a flat metal plate; forming a concave surface in the body plate; and attaching a body core to the body plate in a mold.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 10, 2020
    Inventor: David W. TEALE
  • Publication number: 20200256142
    Abstract: A method and apparatus for a locking system for a downhole tool comprising: a first portion having a plurality of displaceable members, a second portion disposed around the first portion; a locked position wherein axial movement between the members is prevented; and an unlocked position wherein axial movement between the members is permitted.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 13, 2020
    Inventors: William Allen Schultz, JR., David W. TEALE, Richard C. DAVIS
  • Patent number: 10704328
    Abstract: Methods and apparatus for releasing a lead mill of a BHA from a whipstock in a wellbore include slideably releasing the BHA from the whipstock without relative rotation and without destruction of a retractable bolt. A system includes: a bias mechanism; a retractable bolt at least partially disposed in the bottom hole assembly and biased to a retracted position by the bias mechanism; and a retraction actuator capable of selectably opposing the bias of the retractable bolt. A method includes: coupling a whipstock to a BHA with a retention system, including: a retractable bolt biased to retract into the BHA; and a retraction actuator configured to resist the bias of the retractable bolt; and after the whipstock and BHA have been disposed in a wellbore, activating the retraction actuator so that retraction of the retractable bolt ensues.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: July 7, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Joshua Matthew Korf, David W. Teale, Thomas Helbert
  • Publication number: 20200131886
    Abstract: A bottom hole assembly for use in a wellbore includes a whipstock; a downhole tool coupled to the whipstock; and a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, wherein the downhole tool is configured to engage the cleaned portion of the wall. In one example, the cleaning tool includes a body and a plurality of cleaning elements for cleaning the portion of the wall.
    Type: Application
    Filed: October 31, 2018
    Publication date: April 30, 2020
    Inventors: Kenneth D. Hora, Michael Smalley, David W. TEALE
  • Patent number: 10519740
    Abstract: A method of manufacturing a seal element can include depositing a seal element material from an instrument at a location of the seal element, and depositing another seal element material from the instrument at another location of the seal element, the seal element materials being different from each other. A sealing system can include a seal element, the seal element having at least one seal element material about at least one void in the seal element, the seal element material enclosing the void. Another sealing system can include a seal element, the seal element having multiple different seal element materials deposited at respective multiple different locations in the seal element. Properties or characteristics may gradually change or vary from one seal element material to another seal element material in the seal element. The seal element materials may each include the same basic matrix material.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: December 31, 2019
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Jeffery Scott Pray, David W. Teale
  • Patent number: 10472911
    Abstract: A method of manufacturing a gripping element can include depositing a gripping element material, and thereby gradually building up the gripping element and forming a gripping surface thereon, the gripping surface being configured to grippingly engage a well surface. A gripping system can include at least one extendable gripping element configured to grip a well surface, and the gripping element including a gripping element material enclosing one or more voids in the gripping element. Another gripping system can include at least one extendable gripping element having a gripping surface configured to grip a well surface, and the gripping element including at least two gripping element materials deposited to form the gripping element. Properties or characteristics may gradually change or vary from one gripping element material to another gripping element material in the gripping element. The gripping element materials may each include the same basic matrix material.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: November 12, 2019
    Assignee: Weatherford Technology Holdings, LLC.
    Inventors: David W. Teale, Jeffery Scott Pray
  • Patent number: 10458196
    Abstract: A method and apparatus for cutting and pulling a casing string from a well. A downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: October 29, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: William Allen Schultz, Jr., David W. Teale
  • Publication number: 20190301255
    Abstract: A method of cutting a tubular includes providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon; extending the blade relative to the cutting tool; rotating the cutting tool relative to the tubular; guiding the cutting structure into contact with the tubular; cutting the tubular using the blade; and limiting extension of the blade.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: James Robert MILLER, Dan Hugh BLANKENSHIP, Jeremy Lee STONE, David W. TEALE
  • Patent number: 10385640
    Abstract: An apparatus for use in a well includes a tubular mandrel configured to connect to a downhole assembly. An outer hub is configured to attach to a wellhead and has a bore therethrough. An inner housing is disposed on the tubular mandrel and configured to attach the outer hub to the wellhead. A clutch assembly is disposed within the bore of the outer hub and movable between a locked position and an unlocked position, wherein the tubular mandrel is rotatable relative to the inner housing to operate the downhole assembly in the unlocked position.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: August 20, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Jeffery Scott Pray, Anthony T. Mack, Richard J. Segura, David W. Teale