Patents by Inventor John G. Harkness

John G. Harkness 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).

  • Flow control in multilateral wells
    Patent number: 6561277
    Abstract: This invention relates to the flow control of wellbores including a parent well and at least two lateral branches, each of which may have any direction (from vertical to horizontal). The flow from each lateral branch is independently controlled by a separate flow control device. The flow control devices are located within the parent well to enable an easier and efficient workover and intervention of such devices. In some embodiments, the flow control devices are located above the intersection between the parent well and the at least two lateral branches for similar reasons.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 13, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: John Algeroy, John G. Harkness
  • Flow control in multilateral wells
    Publication number: 20020050358
    Abstract: This invention relates to the flow control of wellbores including a parent well and at least two lateral branches, each of which may have any direction (from vertical to horizontal). The flow from each lateral branch is independently controlled by a separate flow control device. The flow control devices are located within the parent well to enable an easier and efficient workover and intervention of such devices. In some embodiments, the flow control devices are located above the intersection between the parent well and the at least two lateral branches for similar reasons.
    Type: Application
    Filed: September 27, 2001
    Publication date: May 2, 2002
    Inventors: John Algeroy, John G. Harkness