Patents by Inventor Marshall H. Mitchell

Marshall H. Mitchell 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 for increasing production from a well system using multi-phase technology in conjunction with gas-lift
    Patent number: 6454002
    Abstract: An apparatus and method are provided to improve production from a gas-lift well comprising injecting gas into a well to lift multi-phase formation fluid from the well; measuring at least one characteristic of the multi-phase formation fluid with a multi-phase flow meter while the fluid is in multi-phase form determining a value of the at least one characteristic from the measurement and adjusting at least one injection gas characteristic based on the determined value, the adjustment tending to improve well system production.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: September 24, 2002
    Assignee: Conoco Inc.
    Inventors: Edward G. Stokes, Marshall H. Mitchell, Dennis T. Perry