Patents by Inventor Graeme Marr

Graeme Marr 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).

  • Hanging apparatus and method
    Patent number: 7686089
    Abstract: Apparatus, such as a liner, adapted to be hung in a downhole tubular such as casing is described. The apparatus includes one or more circumferentially distributed abrasive portions, arranged to be movable radially outwards by a dimple former or an expander. In an embodiment, the abrasive portions are provided on disks moveable in recesses in the outer diameter of the apparatus being hung. In an embodiment, the apparatus is hung by operating a dimple former provided on the running tool.
    Type: Grant
    Filed: October 10, 2005
    Date of Patent: March 30, 2010
    Assignee: Caledus Limited
    Inventors: Paul Howlett, Michael Wardley, Graeme Marr
  • Hanging Apparatus And Method
    Publication number: 20080110641
    Abstract: Apparatus, such as a liner, adapted to be hung in a downhole tubular such as casing is described. The apparatus includes one or more circumferentially distributed abrasive portions, arranged to be movable radially outwards by a dimple former or an expander. In an embodiment, the abrasive portions are provided on disks moveable in recesses in the outer diameter of the apparatus being hung. In an embodiment, the apparatus is hung by operating a dimple former provided on the running tool.
    Type: Application
    Filed: October 10, 2005
    Publication date: May 15, 2008
    Inventors: Paul Howlett, Michael Wardley, Graeme Marr
  • Tubing expansion
    Publication number: 20050005668
    Abstract: There is disclosed a tubing expansion device and a method of expanding tubing. In one embodiment, an expansion device (10) is disclosed which comprises at least one expansion member (14) adapted to expand a tubing (12) by inducing a hoop stress in the tubing (12), and at least one further expansion member (16) adapted to expand the tubing (12) by inducing a compressive yield of the tubing (12); and a method of expanding tubing (12) comprising the steps of expanding the tubing (12) at least in part by inducing a hoop stress in the tubing (12), and expanding the tubing (12) at least in part by inducing a compressive yield of the tubing (12).
    Type: Application
    Filed: March 25, 2004
    Publication date: January 13, 2005
    Inventors: Andrew Duggan, Graeme Marr, Paul Metcalfe, Mark Davies, Neil Andrew Simpson, Wayne Rudd