I-tec As

Bakke Oil Tools, As

I-tech As

Frank Akselberg

Per Olav Haughom

A sealing and/or anchoring element for use in pipelines. The sealing and/or anchoring element includes at least one helical element disposed around a string section, with the helical element being configured so as to be able to expand radially towards an inner wall of the pipeline as the circumferential diameter thereof is increased.

Sealing and anchoring device for use in a well

The present invention relates to an apparatus and method for providing hydraulic load compensated time delay in downhole well operations. The apparatus includes a piston stem enclosed by a piston housing. An axial force, acting either in the direction of stretch or in the direction of compression, causes a pressure buildup in one of two hydraulic chambers which are each filled with an incompressible liquid and which are mutually connected through one or more throttle orifices. A sideways floating, supported piston sleeve is arranged between the piston stem and the piston housing. The piston sleeve is adapted to control the differential pressure across the throttle orifice(s) in such a manner that an increasing axial force will, in a predetermined manner, increase the differential pressure across the throttle orifice(s) and hence delay the flow-through of the incompressible liquid from one of the hydraulic chambers to the other chamber, which also causes a predetermined delay of the relative movement between the piston stem and the piston housing.

Method and means for providing time delay in downhole well operations

A method and a device for controlling a downhole hydraulic sequential control system () in which a number of pressure relief valves () are arranged to open sequentially directly or indirectly for corresponding actuators () through introduction of a hydraulic fluid, wherein the pressure of working fluid supplied to the control system is transmitted to hydraulic fluid in the control system (). The pressure transfer may be effected by means of a dividing piston ().

Growing community of inventors

Sandnes, Norway

Frank Akselberg