Patents by Inventor Lars Vinje

Lars Vinje 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 establishing communication with a downhole portion of a control fluid pipe
    Patent number: 4981177
    Abstract: A downhole tool, such as a safety valve or a stand-alone nipple, has a tubular housing. An axially extending bore is provided in the wall of the housing. A radially extending recess is provided in the internal bore wall of the housing, encompassing the axially extending bore, and a control fluid pipe is passed through the bore and the recess. A cutting tool is mounted for radial movements in the recess and is actuated by downward jarring forces imparted by an auxiliary tool. The control pipe is severed by the cutting element and the lower severed end portion of the control pipe is concurrently crimped to close such end portion.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: January 1, 1991
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Carmody, Erik P. V. Eriksen, Lars Vinje