Patents by Inventor Robert Carl Pahmiyer

Robert Carl Pahmiyer 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).

  • Apparatus and methods for perforating a subterranean formation
    Patent number: 6494261
    Abstract: Apparatus and methods for perforating a subterranean well are provided. In general perforating apparatus, including a pre-weakend casing apparatus and a propellant assembly, is deployed within a formation of the well. Activation of the propellant assembly perforates the pre-weakened casing apparatus and the well formation. The invention can accomplish perforation and sand-control operations in a single trip.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: December 17, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Robert Carl Pahmiyer