Patents by Inventor Bengt Gunnarson

Bengt Gunnarson 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 regulating fluid flow in a well
    Patent number: 6516888
    Abstract: A device for mutually independent control of regulating devices for controlling fluid flow between a hydrocarbon reservoir and a well includes a flow controller and a hydraulic actuator. The actuator is flow-relatedly arranged in series with at least two associated control valves in a path between two hydraulic pipes. The control valves are controlled to open for the flow of hydraulic liquid to the actuator by the pressure in the two hydraulic pipes, and the combination of two hydraulic pipes which are connected to an actuator is different for independently controllable regulating devices.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: February 11, 2003
    Assignee: Triangle Equipment AS
    Inventors: Bengt Gunnarson, Per Olav Haughom