Patents Represented by Attorney Williem E. Shull

Find this attorney in the Justia Lawyer Directory

  • Bi-directional pressure assisted sealing packers
    Patent number: 4924941
    Abstract: Disclosed are packers for use with a gravel pack system in an oil or gas well. The packers are of both the releasable and non-releasable, or sump type. The packers are designed so that after they are set or actuated and they seal against the casing wall or the well bore, fluid pressure in either axial direction on the packer seal will increase the energizing force on the seals. This self-energizing feature is accomplished with selectively disposed and sized annular seals on telescoping members.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: May 15, 1990
    Assignee: Completion Services, Inc.
    Inventor: David L. Farley