Patents by Inventor James R. Brewer

James R. Brewer 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).

  • Multi-zone open hole completion
    Patent number: 5163512
    Abstract: Casing comprising fiberglass or another readily millable material are included in a casing string at intervals which are to be produced. The millable sections are then milled to provide for a multi-zone open hole completion.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: November 17, 1992
    Assignee: Shell Oil Company
    Inventors: James R. Brewer, Kurt D. Koehler
  • Sucker rod pump
    Patent number: 5108272
    Abstract: A subsurface well pump is provided which is resistant to vapor locking. The pump is a reciprocating sucker rod pump which has a top inlet valve, and a means to vent vapors from the barrel of the pump on each stroke.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: April 28, 1992
    Assignees: Shell Western E & P Inc., Shell Canada Limited
    Inventors: James R. Brewer, Wayne D. Lentz
  • Sucker rod pump
    Patent number: 5104301
    Abstract: A subsurface well pump is provided which is resitant to vapor locking. The pump is a reciprocating sucker rod pump which has a top inlet valve which comprises one or more hinged flapper valves.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: April 14, 1992
    Assignee: Shell Western E&P Inc.
    Inventor: James R. Brewer