Petroleum Technology Company As

Ole Sevheim

Erling Kleppa

Øyvind Stokka

Magnar Tveiten

Oyvind Stokka

Kristian Harestad

Tom Norland

A downhole plug, has an elongate body, the body having a longitudinal axis; a first seal arranged on an outer surface of the elongate body; and a second seal arranged on the outer surface of the elongate body and spaced longitudinally from the first seal. A production tubing for a petroleum well, includes a pipe, at least one side pocket mandrel, and at least one plug.

Plug and production tubing for a petroleum well

A valve arrangement for controlling the flow of an injection fluid from a well annulus into a hydrocarbon well, includes a valve body being insertable into a side pocket mandrel, an injection fluid valve for controlling the flow of the injection fluid through the valve arrangement and a bellows arrangement including a first pressure member, a second pressure member and at least one bellows element. A control line port is arranged in the valve body for fluid communication with a control line of the well and a control fluid chamber in fluid communication with the control line port comprises a hydraulic control fluid for biasing the injection fluid valve towards the open position.

Valve arrangement and method of operating the same

A valve system for use in a wellbore includes a side pocket mandrel and one or more well tools, where the side pocket mandrel includes an elongated body section provided with a connector at its ends, the elongated body section being provided with a substantially fully open main bore for alignment with the well tubing and an offset side pocket bore. At least one through opening is provided in the side pocket mandrel, leading into the side pocket bore, and at least one through opening is provided in the internal wall, leading into the main bore, where the at least two openings are in fluid communication through the side pocket bore, in which side pocket bore at least two valves are arranged in series to form a double fluid barrier between the main bore and an outside of the pocket mandrel, the at least two valves being independently retrievable through at least one installation opening arranged in the internal wall of the side pocket mandrel.

Valve system

The present invention relates to a valve system for use in a wellbore, the system comprising a side pocket mandrel and one or more well tools, where the side pocket mandrel () comprises an elongated body section () provided with connection means () at its ends, the elongated body section () being provided with a substantially fully open main bore () for alignment with the well tubing () and an offset side pocket bore (). At least one through opening () is provided in the side pocket mandrel (), leading into the side pocket bore (), and at least one through opening () is provided in the internal wall (), leading into the main bore (), where the at least two openings () are in fluid communication through the side pocket bore (), in which side pocket bore () at least two valves () are arranged in series to form a double fluid barrier between the main bore () and an outside of the pocket mandrel (), the at least two valves () being independently retrievable through at least one installation opening arranged in the internal wall () of the side pocket mandrel ().

The invention relates to a valve device that is used in oil and gas wells. The valve device has an external housing (), where at least one inlet () in the housing () is connected to an outlet () through a longitudinal bore in the housing longitudinal direction. Between the valve device's inlet and outlet there is mounted a valve seat () in the bore, where a valve body () shuts off the connection between the inlet and outlet. The valve body's position is controlled by a support (), connected with a pressure-sensitive bellows device () comprising an upper and a lower bellows element (). When the lower bellows element is compressed in the valve device's axial direction, the compression will cause the two bellows elements'impact elements to be moved relative each other in order to lift the valve body out of abutment with the valve seat.

Bellows valve

Present invention regards a device for injection and stimulation of fluids in a wellbore, where the device is typically is installed in Christmas trees, wellheads or subsea. The device comprises two separable sections, where the section that is mounted/arranged within the Christmas tree or wellhead, will remain in a closed position even if the other section due to external forces is broken off or in other ways is damaged.

Device for injection and stimulation of fluids in a well bore

The present invention regards a device designed for injection of fluids in a well bore, typically an offshore well bore for petroleum production and gas injection/gas lift system for fluid injection. The device comprises a outer hollow housing with an internal body moveable within the outer housing which in a first closed position is closed with a metal to metal seal system between the outer housing and the internal body, which internal body is operated by pressure differential across the internal body. The internal movable body is connected to the outer hollow housing by means of a retainer key. The retainer key comprises a shear arrangement and is arranged to keep the valve in a fixed closed position, where fluid pressure is to overcome the pretension of the retainer key in order to open the device. When the device is shear opened, it can be kept in this open position as the retainer key is locked to the outer hollow housing.

Growing community of inventors

Stavanger, Norway

Ole Sevheim