Patents by Inventor Alan Grant NORRIE

Alan Grant NORRIE 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).

  • Frangible core barrel
    Patent number: 9540896
    Abstract: A coring assembly comprises an outer barrel coupled to a coring bit. An inner barrel is disposed within the outer barrel. An inner sleeve is disposed within the inner barrel and includes at least one frangible region that allows the inner sleeve to break so that coring operations can continue after the occurrence of a core jam.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: January 10, 2017
    Assignee: National Oilwell Varco, L.P.
    Inventors: Alan Grant Norrie, Khoi Trinh, Rahul Patel
  • FRANGIBLE CORE BARREL
    Publication number: 20150275604
    Abstract: A coring assembly comprises an outer barrel coupled to a coring bit. An inner barrel is disposed within the outer barrel. An inner sleeve is disposed within the inner barrel and includes at least one frangible region that allows the inner sleeve to break so that coring operations can continue after the occurrence of a core jam.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 1, 2015
    Applicant: National Oilwell Varco, L.P.
    Inventors: Alan Grant NORRIE, Khoi TRINH, Rahul PATEL