Patents by Inventor Alfred W. Eustes

Alfred W. Eustes 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 and apparatus to rotate subsurface wellbore casing
    Patent number: 10961791
    Abstract: Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: March 30, 2021
    Assignee: COLORADO SCHOOL OF MINES
    Inventors: William W. Fleckenstein, Alfred W. Eustes, III
  • METHOD AND APPARATUS TO ROTATE SUBSURFACE WELLBORE CASING
    Publication number: 20190277096
    Abstract: Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.
    Type: Application
    Filed: May 13, 2019
    Publication date: September 12, 2019
    Applicant: COLORADO SCHOOL OF MINES
    Inventors: William W. Fleckenstein, Alfred W. Eustes, III
  • Method and apparatus to rotate subsurface wellbore casing
    Patent number: 10287829
    Abstract: Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: May 14, 2019
    Assignee: COLORADO SCHOOL OF MINES
    Inventors: William W. Fleckenstein, Alfred W. Eustes, III
  • METHOD AND APPARATUS TO ROTATE SUBSURFACE WELLBORE CASING
    Publication number: 20160177637
    Abstract: Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 23, 2016
    Inventors: William W. Fleckenstein, Alfred W. Eustes