Patents by Inventor Brian Andrew McCarthy

Brian Andrew McCarthy 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).

  • Downhole under-reamer and associated methods
    Patent number: 10294728
    Abstract: A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 21, 2019
    Assignee: NOV Downhole Eurasia Limited
    Inventors: Brian Andrew McCarthy, Philip Graham Rodger
  • DOWNHOLE UNDER-REAMER AND ASSOCIATED METHODS
    Publication number: 20180195349
    Abstract: A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.
    Type: Application
    Filed: March 9, 2018
    Publication date: July 12, 2018
    Inventors: Brian Andrew McCarthy, Philip Graham Rodger
  • Downhole under-reamer and associated methods
    Patent number: 9945184
    Abstract: A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 17, 2018
    Assignee: NOV Downhole Eurasia Limited
    Inventors: Brian Andrew McCarthy, Philip Graham Rodger
  • DOWNHOLE UNDER-REAMER AND ASSOCIATED METHODS
    Publication number: 20150376952
    Abstract: A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Brian Andrew McCarthy, Philip Graham Rodger