Patents by Inventor Nancy Suzan COTTEN

Nancy Suzan COTTEN 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).

  • Automatic choke optimization and selection for managed pressure drilling
    Patent number: 9988866
    Abstract: A choke valve assembly, system, and method can be used with a drill string in a wellbore to aid in controlling the bottom hole pressure during drilling of the wellbore. The choke valve assembly can have a primary choke and one or more supplemental chokes, where these choke valves each have a controllable range relative to the flow and pressure of drilling fluid passing through the assembly. A control unit can automatically actuate the primary choke and one or more supplemental chokes in order to both maintain the choke valves within their controllable ranges and concurrently maintain a consistent boom hole pressure in the connected wellbore.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: June 5, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Nancy Suzan Cotten, Eric Miller, Charles Michael Pool
  • AUTOMATIC CHOKE OPTIMIZATION AND SELECTION FOR MANAGED PRESSURE DRILLING
    Publication number: 20160298401
    Abstract: A choke valve assembly, system, and method can be used with a drill string in a wellbore to aid in controlling the bottom hole pressure during drilling of the wellbore. The choke valve assembly can have a primary choke and one or more supplemental chokes, where these choke valves each have a controllable range relative to the flow and pressure of drilling fluid passing through the assembly. A control unit can automatically actuate the primary choke and one or more supplemental chokes in order to both maintain the choke valves within their controllable ranges and concurrently maintain a consistent boom hole pressure in the connected wellbore.
    Type: Application
    Filed: December 12, 2014
    Publication date: October 13, 2016
    Inventors: Nancy Suzan COTTEN, Eric MILLER, Charles Michael POOL