Patents by Inventor Lee Emerson

Lee Emerson 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).

  • Apparatus, system, and method for isolating a tubing string
    Patent number: 11021926
    Abstract: An apparatus, system and method are provided for isolating a portion of a tubing string in a hydrocarbon well. The portion of isolated tubing string can be used to set a packer or test tubing integrity hydrostatically. The apparatus includes a dissolvable valve that is installed in a nipple and positioned below the portion of tubing string. The dissolvable valve includes a ball seat for receiving a dissolvable ball. When the dissolvable ball is dropped into the tubing string and seated on the ball seat of the dissolvable valve, the portion of tubing string is isolated from a second portion of tubing string below the nipple. Wellbore fluids in the hydrocarbon well dissolve the dissolvable valve and the dissolvable ball to leave behind a nipple without any restrictions.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: June 1, 2021
    Assignee: PETROFRAC OIL TOOLS
    Inventors: Roddie R. Smith, Tony Flores, Lee Emerson, Robert Joe Coon
  • APPARATUS, SYSTEM, AND METHOD FOR ISOLATING A TUBING STRING
    Publication number: 20200032610
    Abstract: An apparatus, system and method are provided for isolating a portion of a tubing string in a hydrocarbon well. The portion of isolated tubing string can be used to set a packer or test tubing integrity hydrostatically. The apparatus includes a dissolvable valve that is installed in a nipple and positioned below the portion of tubing string. The dissolvable valve includes a ball seat for receiving a dissolvable ball. When the dissolvable ball is dropped into the tubing string and seated on the ball seat of the dissolvable valve, the portion of tubing string is isolated from a second portion of tubing string below the nipple. Wellbore fluids in the hydrocarbon well dissolve the dissolvable valve and the dissolvable ball to leave behind a nipple without any restrictions.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 30, 2020
    Inventors: Roddie R. Smith, Tony Flores, Lee Emerson, Robert Joe Coon