Petroleum Technology Company As

Ståle Pettersen

Erling Kleppa

Kristian Harestad

Trond Kvasnes

A method of producing a side pocket mandrel body () for use in a hydrocarbon well side pocket mandrel assembly, which mandrel body comprises: a first end () displaying a first connection arrangement () for connecting the mandrel body to an up-hole section of a production tubing of the hydrocarbon well, and a second end () displaying a second connection arrangement () for connecting the mandrel body to a down-hole section of the production tubing; a longitudinal, through-going main conduit () for communicating with a central passageway of the production tubing; and a side pocket section () comprising at least one side pocket () for retrievably housing an injection fluid flow control device. The method comprises the steps of: providing a continuous, solid piece of material with the through-going main conduit; in the solid piece of material, forming said at least one side pocket by machining a bore (), displaying an external entrance opening (), into a laterally offset section of the solid piece of material generally parallel to the main conduit such that an internal wall section () of the solid piece of material is brought to separate the main conduit from the machined bore; plugging the entrance opening () of the machined bore with a fluid-tight plug (); providing at least one opening () from an outside of the mandrel body into the at least one side pocket, thereby forming an injection fluid inlet; providing at least one opening in the wall section, thereby forming an injection fluid outlet; and providing the solid piece of material with the first and the second connection arrangements, thereby rendering the mandrel body connectable to the up-hole and down-hole sections of the production tubing.

Method of manufacturing a side pocket mandrel body

A method of producing a side pocket mandrel body for use in a hydrocarbon well side pocket mandrel assembly includes providing a continuous, solid piece of material with the through-going main conduit; in the solid piece of material, forming said at least one side pocket by machining a bore, displaying an external entrance opening, into a laterally offset section of the solid piece of material generally parallel to the main conduit such that an internal wall section of the solid piece of material is brought to separate the main conduit from the machined bore; plugging the entrance opening of the machined bore with a fluid-tight plug; providing at least one opening from an outside of the mandrel body into the at least one side pocket; providing at least one opening in the wall section; and providing the solid piece of material with the first and the second connection arrangements, thereby rendering the mandrel body connectable to the up-hole and down-hole sections of the production tubing.

A gas lift valve for use in a hydrocarbon well includes an elongated valve housing including an inlet port for receiving a fluid from an annulus of a hydrocarbon well, and an outlet port for delivering the fluid to a production tubing of the hydrocarbon well, and an elongated, internal valve body, which is movable along a longitudinal, central axis of the valve housing between a first end position and a second end position. In the first end position, a sealing surface of the valve body is in sealing contact with a valve seat surface of the valve housing prohibiting the fluid to flow from the inlet port to the outlet port, and in the second end position the sealing surface is separated from the valve seat surface allowing the fluid to flow from the inlet port to the outlet port. The outlet port is positioned at a terminal end of the valve housing.

Gas lift valve

The present invention relates to a kick over tool () for manipulating and installing devices into and removing devices from a side pocket mandrel (), where the kick over tool is designed to enable multiple operations in the same run. The kick over tool comprises a tubular carrier housing () adapted for passage through a full opening bore of a production string, at least a first and second setting device () that is arranged in said carrier housing, the first and second setting device being pivotally connected to a first and second articulated linkage mechanism () comprising a coupling device for the well bore device.

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Sandnes, Norway

Ståle Pettersen