Patents by Inventor Jeffrey L. Osselburn

Jeffrey L. Osselburn 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).

  • Cement through side pocket mandrel
    Patent number: 7228897
    Abstract: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 12, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: James H. Holt, Jr., Walter R. Chapman, James H. Kritzler, Jeffrey L. Osselburn, Keith E. Lewis
  • Cement through side pocket mandrel
    Publication number: 20040112599
    Abstract: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.
    Type: Application
    Filed: October 1, 2003
    Publication date: June 17, 2004
    Applicant: Baker Hughes Incorporated
    Inventors: James H. Holt, Walter R. Chapman, James H. Kritzler, Jeffrey L. Osselburn, Keith E. Lewis