Patents by Inventor Larry H. Flak

Larry H. Flak 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 servicing a wellhead assembly
    Patent number: 5649594
    Abstract: A method and apparatus for servicing a Christmas tree on a completed well as set forth. It incorporates a tub or bucket which fits around the casing below the Christmas tree. With the use of chilled liquid in the tub, a cold temperature region is created. A chilled water supply is connected through a flexible injection line, injection orifice, and is sprayed into the Christmas tree to flow downwardly through the chilled region. And ice plug is formed on the interior of the pipes defining the casing and production tubing strings. Ice is formed from the exterior to the interior, thereby plugging the well and enabling servicing.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: July 22, 1997
    Assignee: Boots & Coots, L.P.
    Inventors: Larry H. Flak, James A. Tuppen