Patents by Inventor Tammy S. Halley

Tammy S. Halley 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).

  • Anti-surge/reverse thruster
    Patent number: 7677334
    Abstract: An anti-surge/reverse thrusting tool for reducing the forces on a drill bit used in subterranean well drilling operations along with methods for drilling wells using a drill string employing the tool. The tool utilizes the pressure differential between drilling fluid flowing through the tool and the fluid located in the well bore annulus proximate the tool to reduce the likelihood of drill bit stall. The tool generally comprises an outer housing and a piston assembly that is axially shiftable relative to the housing.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: March 16, 2010
    Assignee: ConocoPhillips Company
    Inventors: Curtis G. Blount, Charles D. Hailey, Tammy S. Halley, legal representative, William D. Rauchenstein
  • ANTI-SURGE/REVERSE THRUSTER
    Publication number: 20080264689
    Abstract: An anti-surge/reverse thrusting tool for reducing the forces on a drill bit used in subterranean well drilling operations is provided along with methods for drilling wells using a drill string employing the tool. The tool utilizes the pressure differential between drilling fluid flowing through the tool and the fluid located in the well bore annulus proximate the tool to reduce the likelihood of drill bit stall. The tool generally comprises an outer housing and a piston assembly that is axially shiftable relative to the housing.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Applicant: ConocoPhillips Company
    Inventors: Curtis G. Blount, Charles D. Hailey, William D. Rauchenstein, Tammy S. Halley