Patents by Inventor Mickey W. Eckhart

Mickey W. Eckhart 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 isolating a zone of wellbore and extracting a fluid therefrom
    Patent number: 5242022
    Abstract: A method and apparatus for isolating a zone (12) of a wellbore (14) penetrated by a casing (16) and then opening ports (28) in the zone (12) for extraction or injection of fluids is provided. The zone (12) is isolated by inflating jackets (42) and then closing a safety valve (38) by sliding a sliding member (44) relative to a first conduit (46). The ports (28) are opened by sliding a piston (80) of a sliding sleeve valve (76) so that openings (84) therein align with the ports (28). The invention provides improved zone isolation and reduced wear of seals (86) in the sliding sleeve valve (76).
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: September 7, 1993
    Assignee: Paul Hattich GmbH & Co.
    Inventors: Guy C. Burton, Mickey W. Eckhart, Thomas J. McCaffrey, James F. McCaffrey