Patents by Inventor David C. Daniel

David C. Daniel 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).

  • Patent number: 6925924
    Abstract: A non-linear shaped charge perforator for use in perforating an oil and gas formation into which a wellbore has been drilled comprises a monolithic, axisymmetric metal case in which is disposed a main explosive charge between the front of the case, which is closed with a concave metal liner, and the closed back end of the case. The main explosive charge contains multiple initiation points, preferably two initiation points located about 180° apart on the outside surface of the charge, so that when the perforator is detonated the main charge is initiated such that the metal liner is collapsed into a non-circular jet, preferably a fan-shaped jet, that pierces the casing of the wellbore and forms non-circular perforations, preferably slot-shaped perforations, in the surrounding formation.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: August 9, 2005
    Assignee: Molycorp Inc.
    Inventors: Ernest L. Baker, David C. Daniel, David S. Wesson, John L. Burba, III, Arthur S. Daniels, Robert E. Davis