Valve system
AssigneePetroleum Technology Company AS
InventorKristian Korbøl Josefsen
Life of this patent
Estimating the term…
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.
Claims29
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,
- 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,
- wherein:
- the first receptacle and the second receptacle are arranged longitudinally spaced in opposite end sections of the laterally offset side pocket bore,
- the internal wall has an opening arranged between the end sections, through which each of the first device and the second device is independently retrievable;
- and
- the side pocket mandrel comprises a fluid passage extending from the first receptacle to the second receptacle, separate from the laterally offset side pocket bore, the fluid passage being configured to fluidly connect an outlet of the first device and an inlet of the second device.
A side pocket mandrel comprising:
- a longitudinally extending production conduit having a central longitudinal axis;
- a first pocket for accepting a first barrier valve, the first pocket having a first central axis;
- a second pocket for accepting a second 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;
- and
- a fourth passage connecting the first pocket and the second pocket to the production conduit, the fourth passage allowing:
- insertion of one of the first barrier valve and the second barrier valve into each of the first pocket and the second pocket via the fourth passage;
- and
- independent retrieval of the first barrier valve and the second barrier valve;
- wherein the second passage is:
- free from direct connection with the fourth passage;
- and
- configured to fluidly connect an outlet of the first barrier valve and an inlet of the second barrier valve.
Dependencies are inferred from the claim text.