Patents by Inventor Emile SEVADJIAN

Emile SEVADJIAN 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).

  • Reverse circulation cementing system for cementing a liner
    Patent number: 9869157
    Abstract: Reverse circulation cementing of a liner in a wellbore extending through a subterranean formation is presented. A running tool with expansion cone, release assembly, annular isolation device, and reverse circulation assembly is run-in with a liner. The annular isolation device is set against the casing. A valve, such as a dropped-ball operated sliding sleeve valve, opens reverse circulation ports for the cementing operation. The liner annulus is cemented using reverse circulation. The expandable liner hanger is expanded into engagement with the casing. Conventional circulation is restored. The running tool is released and pulled from the hole.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: January 16, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Emile Sevadjian, Gary Kohn, Arthur Stautzenberger, Richard Noffke, Grant Hartman, Stephen Maddux, Odee Daigle, Ryan Humphrey, David Matus
  • REVERSE CIRCULATION CEMENTING SYSTEM FOR CEMENTING A LINER
    Publication number: 20160160603
    Abstract: A method for reverse circulation cementing of a liner in a wellbore extending through a subterranean formation is presented. A running tool with expansion cone, release assembly, annular isolation device, and reverse circulation assembly is run-in with a liner. The annular isolation device is set against the casing. A valve, such as a dropped-ball operated sliding sleeve valve, opens reverse circulation ports for the cementing operation. The liner annulus is cemented using reverse circulation. The expandable liner hanger is expanded into engagement with the casing. Conventional circulation is restored. The running tool is released and pulled from the hole.
    Type: Application
    Filed: October 9, 2013
    Publication date: June 9, 2016
    Inventors: Emile SEVADJIAN, Gary KOHN, Arthur STAUTZENBERGER, Richard NOFFKE, Grant HARTMAN, Stephen MADDUX, Odee DAIGLE, Ryan HUMPHREY, David MATUS