Patents by Inventor Roberto Francisco SCHULDES

Roberto Francisco SCHULDES 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).

  • Single trip, open-hole wellbore isolation assembly
    Patent number: 10689944
    Abstract: A method of isolating an open-hole section of a wellbore includes positioning, a liner, a valve, and a liner hanger that are attached to a working string adjacent an interface between the open-hole section and a cased section of the wellbore. The method includes injecting cement through the liner and the valve to form a first balanced cement plug within the open-hole section of the wellbore. Generally, the liner, the valve, and the liner hanger are secured within the balanced cement plug. After the balanced cement plug is set, the liner hanger is actuated and the liner, the valve, and the liner hanger are detached from the working string, which causes the valve to close and creates a mechanical barrier between the balanced cement plug and the working string. Additionally, the mechanical barrier is covered in cement to form another balanced cement plug.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: June 23, 2020
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Roberto Francisco Schuldes, Kevin Wendell Ardoin
  • SINGLE-TRIP, OPEN-HOLE WELLBORE ISOLATION ASSEMBLY
    Publication number: 20190338618
    Abstract: A method of isolating an open-hole section of a wellbore includes positioning, a liner, a valve, and a liner hanger that are attached to a working string adjacent an interface between the open-hole section and a cased section of the wellbore. The method includes injecting cement through the liner and the valve to form a first balanced cement plug within the open-hole section of the wellbore. Generally, the liner, the valve, and the liner hanger are secured within the balanced cement plug. After the balanced cement plug is set, the liner hanger is actuated and the liner, the valve, and the liner hanger are detached from the working string, which causes the valve to close and creates a mechanical barrier between the balanced cement plug and the working string. Additionally, the mechanical barrier is covered in cement to form another balanced cement plug.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Inventors: Roberto Francisco SCHULDES, Kevin Wendell ARDOIN
  • Single-trip, open-hole wellbore isolation assembly
    Patent number: 10385653
    Abstract: A method of isolating an open-hole section of a wellbore includes positioning, a liner, a valve, and a liner hanger that are attached to a working string adjacent an interface between the open-hole section and a cased section of the wellbore. The method includes injecting cement through the liner and the valve to form a first balanced cement plug within the open-hole section of the wellbore. Generally, the liner, the valve, and the liner hanger are secured within the balanced cement plug. After the balanced cement plug is set, the liner hanger is actuated and the liner, the valve, and the liner hanger are detached from the working string, which causes the valve to close and creates a mechanical barrier between the balanced cement plug and the working string. Additionally, the mechanical barrier is covered in cement to form another balanced cement plug.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: August 20, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Roberto Francisco Schuldes, Kevin Wendell Ardoin
  • SINGLE-TRIP, OPEN-HOLE WELLBORE ISOLATION ASSEMBLY
    Publication number: 20190003279
    Abstract: A method of isolating an open-hole section of a wellbore includes positioning, a liner, a valve, and a liner hanger that are attached to a working string adjacent an interface between the open-hole section and a cased section of the wellbore. The method includes injecting cement through the liner and the valve to form a first balanced cement plug within the open-hole section of the wellbore. Generally, the liner, the valve, and the liner hanger are secured within the balanced cement plug. After the balanced cement plug is set, the liner hanger is actuated and the liner, the valve, and the liner hanger are detached from the working string, which causes the valve to close and creates a mechanical barrier between the balanced cement plug and the working string. Additionally, the mechanical barrier is covered in cement to form another balanced cement plug.
    Type: Application
    Filed: October 2, 2015
    Publication date: January 3, 2019
    Inventors: Roberto Francisco SCHULDES, Kevin Wendell ARDOIN