Patents by Inventor David James WILKIE

David James WILKIE 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: 11332993
    Abstract: A tool for penetrating a tubular as described. The tool comprises at least one length of linear shaped charge, a carrier adapted to support the/each length of linear shaped charge, and at least one detonation mechanism for detonating the/each length of linear shaped charge. Upon detonation of the/each length of linear shaped charge, a length of material is projected outwardly from the/each length of linear shaped charge towards an internal surface of die tubular, which is thereby penetrated. The at least one length of linear shaped charge is arranged such that, upon detonation, the trajectory of at least one portion of the projected material intersects the trajectory of at least one other portion of projected material at or adjacent the internal surface of the tubular.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 17, 2022
    Assignee: SPEX CORPORATE HOLDINGS LIMITED
    Inventors: Jamie Oag, Rae Younger, Andrew Pettitt, Barry Chapman, Simon McKay, David James Wilkie, Sidney Dantuma Johnston, John Fox
  • Patent number: 11193344
    Abstract: A tool for fracturing at least one tubular is described. The tool comprises a plurality of parallel columns of explosives and a detonation system configured to detonate the columns of explosives. The columns are arranged such that upon detonation, at least a portion of the Shockwave propagating in a direction outwardly from the tool from one column combines with at least a portion of the Shockwave propagating in a direction outwardly from the tool from another column to create a combined Shockwave of greater intensity than either of the Shockwaves which formed the combined Shockwave.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 7, 2021
    Assignee: SPEX CORPORATE HOLDINGS LTD.
    Inventors: Barry Chapman, David James Wilkie
  • Publication number: 20200131876
    Abstract: A tool for penetrating a tubular as described. The tool comprises at least one length of linear shaped charge, a carrier adapted to support the/each length of linear shaped charge, and at least one detonation mechanism for detonating the/each length of linear shaped charge. Upon detonation of the/each length of linear shaped charge, a length of material is projected outwardly from the/each length of linear shaped charge towards an internal surface of die tubular, which is thereby penetrated. The at least one length of linear shaped charge is arranged such that, upon detonation, the trajectory of at least one portion of the projected material intersects the trajectory of at least one other portion of projected material at or adjacent the internal surface of the tubular.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Inventors: Jamie Oag, Rae Younger, Andrew Pettitt, Barry Chapman, Simon McKay, David James Wilkie, Sidney Dantuma Johnston, John Fox
  • Publication number: 20200115981
    Abstract: A tool for fracturing at least one tubular is described. The tool comprises a plurality of parallel columns of explosives and a detonation system configured to detonate the columns of explosives. The columns are arranged such that upon detonation, at least a portion of the Shockwave propagating in a direction outwardly from the tool from one column combines with at least a portion of the Shockwave propagating in a direction outwardly from the tool from another column to create a combined Shockwave of greater intensity than either of the Shockwaves which formed the combined Shockwave.
    Type: Application
    Filed: December 21, 2017
    Publication date: April 16, 2020
    Inventors: Barry CHAPMAN, David James WILKIE
  • Patent number: 10550656
    Abstract: A tool for penetrating a tubular as described. The tool comprises at least one length of linear shaped charge, a carrier adapted to support the/each length of linear shaped charge, and at least one detonation mechanism for detonating the/each length of linear shaped charge. Upon detonation of the/each length of linear shaped charge, a length of material is projected outwardly from the/each length of linear shaped charge towards an internal surface of the tubular, which is thereby penetrated. The at least one length of linear shaped charge is arranged such that, upon detonation, the trajectory of at least one portion of the projected material intersects the trajectory of at least one other portion of projected material at or adjacent the internal surface of the tubular.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: February 4, 2020
    Assignee: SPEX CORPORATE HOLDINGS LIMITED
    Inventors: Jamie Oag, Rae Younger, Andrew Pettitt, Barry Chapman, Simon McKay, David James Wilkie, Sidney Dantuma Johnston, John Fox
  • Publication number: 20180291697
    Abstract: A tool for penetrating a tubular as described. The tool comprises at least one length of linear shaped charge, a carrier adapted to support the/each length of linear shaped charge, and at least one detonation mechanism for detonating the/each length of linear shaped charge. Upon detonation of the/each length of linear shaped charge, a length of material is projected outwardly from the/each length of linear shaped charge towards an internal surface of the tubular, which is thereby penetrated. The at least one length of linear shaped charge is arranged such that, upon detonation, the trajectory of at least one portion of the projected material intersects the trajectory of at least one other portion of projected material at or adjacent the internal surface of the tubular.
    Type: Application
    Filed: October 27, 2015
    Publication date: October 11, 2018
    Inventors: Jamie OAG, Rae YOUNGER, Andrew PETTITT, Barry CHAPMAN, Simon McKAY, David James WILKIE, Sidney Dantuma JOHNSTON, John FOX