Valve system
AssigneePetroleum Technology Company AS
InventorKristian Korbøl JOSEFSEN
Life of this patent
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Abstract
A valve system for use in a wellbore, comprising a side pocket mandrel having a main bore for alignment with a wellbore tubular and a laterally offset side pocket bore separated from the main bore by an internal wall, the laterally offset side pocket bore comprising a first receptacle for a first device and a second receptacle for a second device, the internal wall having an opening through which each of the first device and the second device is independently retrievable. There is also provided a side pocket mandrel, a hydrocarbon well and a method of operating a hydrocarbon well.
Claims28
A valve system for use in a wellbore, the valve system comprising a side pocket mandrel having a main bore for alignment with a tubular in the wellbore and a laterally offset side pocket bore, the main bore and the laterally offset side pocket bore being separated by an internal wall,
- the laterally offset side pocket bore comprising a first receptacle for a first device and a second receptacle for a second device,
- the internal wall having an opening through which each of the first device and the second device is independently retrievable.
A side pocket mandrel comprising
- a longitudinally extending production conduit having a central longitudinal axis;
- a first pocket for accepting a barrier valve, the first pocket having a first central axis;
- a second pocket for accepting a barrier valve, the second pocket having a second central axis;
- a first passage fluidly connecting an outside of the side pocket mandrel to an inside of the first pocket;
- a second passage fluidly connecting the inside of the first pocket to an inside of the second pocket;
- a third passage fluidly connecting the inside of the second pocket to the production conduit;
- a fourth passage connecting the first and second pockets to the production conduit and allowing insertion of a barrier valve into at least one of the first and second pocket via the fourth passage.
Dependencies are inferred from the claim text.