Patents by Inventor Andrew Derek Normore

Andrew Derek Normore 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).

  • Method for reducing stick-slip during wellbore drilling
    Patent number: 9145768
    Abstract: A method for drilling a wellbore includes operating at least one motor coupled within a drill string to turn a drill bit at an end thereof. An automatic drill string rotation controller causes rotation of the drill string in a first direction until a measured parameter related to torque on the drill string reaches a first selected value. The automatic drill string rotation controller causes rotation of the drill string in a second direction until the measured parameter related to torque is reduced to a second selected value. The drill string is axially advanced to cause the drill bit to extend the wellbore.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: September 29, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Andrew Derek Normore, Eric E. Maidla
  • METHOD FOR REDUCING STICK-SLIP DURING WELLBORE DRILLING
    Publication number: 20140008126
    Abstract: A method for drilling a wellbore includes operating at least one motor coupled within a drill string to turn a drill bit at an end thereof. An automatic drill string rotation controller causes rotation of the drill string in a first direction until a measured parameter related to torque on the drill string reaches a first selected value. The automatic drill string rotation controller causes rotation of the drill string in a second direction until the measured parameter related to torque is reduced to a second selected value. The drill string is axially advanced to cause the drill bit to extend the wellbore.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 9, 2014
    Inventors: Andrew Derek Normore, Eric E. Maidla