Patents by Inventor Curtis Kofoed

Curtis Kofoed 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).

  • Device and method for injecting fluids into a wellbore
    Patent number: 6575247
    Abstract: A device and method for delivering fracture fluid (e.g., erosive materials) into an oilfield wellbore while the well has wireline, coiled tubing, jointed tubing or any other apparatus encumbering the flow path of the erosive fluid that is being injected into the device. The device provides the ability to insert and remove equipment in the wellbore during fluid treatment while maintaining access to the full wellbore diameter. The invention also provides a method for delivery and positive, down-hole displacement of material (i.e., diverting material including, but not limited to buoyant ball sealers).
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: June 10, 2003
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Randy C. Tolman, Curtis Kofoed
  • Device and method for injecting fluids into a wellbore
    Publication number: 20030010498
    Abstract: A device and method for delivering fracture fluid (e.g., erosive materials) into an oilfield wellbore while the well has wireline, coiled tubing, jointed tubing or any other apparatus encumbering the flow path of the erosive fluid that is being injected into the device. The device provides the ability to insert and remove equipment in the wellbore during fluid treatment while maintaining access to the full wellbore diameter. The invention also provides a method for delivery and positive, down-hole displacement of material (i.e., diverting material including, but not limited to buoyant ball sealers).
    Type: Application
    Filed: July 10, 2002
    Publication date: January 16, 2003
    Inventors: Randy C. Tolman, Curtis Kofoed