Patents Represented by Attorney Richard A. Kulason

Find this attorney in the Justia Lawyer Directory

  • Method for releasing stuck drill pipe
    Patent number: 4466486
    Abstract: A method is revealed for releasing a stuck drill string in a borehole of an underground formation by application of an additive fluid comprising fresh water or brine and a polymer material.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: August 21, 1984
    Assignee: Texaco Inc.
    Inventor: Clarence O. Walker