Patents by Inventor Hugh Edward Sheehy

Hugh Edward Sheehy 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).

  • Wellbore system for simultaneous drilling and production
    Patent number: 7284614
    Abstract: A wellbore system for simultaneously drilling a wellbore into an earth formation and producing hydrocarbon fluid from the wellbore, is provided. The system comprises a production tubing extending into the wellbore and having a hydrocarbon fluid inlet arranged in a first part of the wellbore in fluid communication with a hydrocarbon fluid bearing zone of the earth formation, and a drilling riser extending through the production tubing and having a drilling fluid inlet in fluid communication with a second part of the wellbore, said second wellbore part being scaled from said first wellbore part. A drill string extends through the drilling riser and into said second wellbore part so as to allow further drilling of the wellbore.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: October 23, 2007
    Assignee: Shell Oil Company
    Inventors: Laurens Cornelis Van Helvoirt, Hugh Edward Sheehy