Barrier arrangement in wellhead assembly

Patent metadata

Field	Value
Publication number	US-2022018214-A1
Application number	US-201917299435-A
Country	US
Kind code	A1
Filing date	Dec 4, 2019
Priority date	Dec 5, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

A subsea wellhead assembly having an arrangement of primary well barriers provided in equipment that is located within the well and/or the wellhead housing is provided. All of the well barriers may be located within the tubing hanger and/or the production tubing string extending into the wellbore. The subsea wellhead assembly also includes a flowline connection body placed atop the wellhead housing and fluidly coupled to the tubing hanger. None of the primary barriers for the well are located in the flowline connection body.

First claim

What is claimed is:

1 . A system, comprising:
a tubing hanger positioned in a wellhead housing; a production tubing string coupled to and extending from the tubing hanger into a well; a flowline connection both fluidly coupled to the tubing hanger and disposed atop the well head housing; and at least one primary production barrier valve disposed along a production flowpath within the whine hanger.

2 . The system of claim 1 , further comprising a barrier valve disposed along an annulus flowpath within the tubing hanger.

3 . The system of claim 1 , further comprising a second primary production barrier valve disposed upstream of the tubing hanger along a main production flowbore of the production tubing string.

4 . The system of claim 1 , wherein the flowline connection body further comprises:
a production swab valve disposed along a production flowpath within the flowline connection body, wherein the production swab valve provides vertical access to the production flowpath within the flowline connection body; a production wing valve disposed along the production flowpath within the flowline connection body downstream from the at least one primary production barrier valve; a pressure control valve disposed along the production flowpath within the flowline connection body downstream of the production wing valve; and a process shut down valve disposed along the production flowpath within the flowline connection body downstream of the pressure control valve.

5 . The system of claim 4 , wherein the flowline connection body further comprises:
an annulus swab valve disposed along an annulus flowpath within the flowline connection body, wherein the annulus swab valve provides vertical access to the annulus flowpath within the flowline connection body; and an annulus wing valve disposed along the annulus flowpath within the flowline connection body downstream from an annulus flowpath within the tubing hanger.

6 . The system of claim 5 , wherein the flowline connection body further comprises a crossover valve disposed between the production flowpath within the flowline connection body and the annulus flowpath within the flowline connection body.

7 . The system of claim 1 , further comprising a jumper and a manifold, wherein the jumper couples the manifold to the flowline connection body.

8 . The system of claim 1 , further comprising:
a barrier valve disposed along an annulus flowpath within the tubing hanger; a second primary production barrier valve disposed upstream of the tubing hanger along a main production flowbore of the production tubing string; a crossover valve disposed between the production flowpath and the annulus flowpath within the tubing hanger; a production wing valve disposed along the production flowpath within the tubing hanger; and an annulus wing valve disposed along an annulus flowpath within the flowline connection body.

9 . The system of claim 8 , further comprising:
a flow module coupled to the flowline connection body via a first jumper; and a manifold coupled to the flow module via a second jumper.

10 . The system of claim 9 , wherein the flow module further comprises a pressure control valve and a process shut down valve.

11 . The system of claim 8 , wherein the flowline connection body comprises;
a production swab valve disposed along a production flowpath within the flowline connection body, wherein the production swab valve provides vertical access to the production flowpath within the flowline connection body; and an annulus swab valve disposed along the annulus flowpath within the flowline connection body, wherein the annulus swab valve provides vertical access to the annulus flowpath within the flowline connection body.

12 . The system of claim 1 , wherein the flowline connection body does not include a primary production barrier valve capable of shutting in the well.

13 . A system, comprising;
a tubing hanger positioned in a wellhead housing; a production tubing string coupled to and extending from the tubing hanger into a well; a flowline connection body fluidly coupled to the tubing hanger and disposed atop the wellhead housing; and at least two primary production barrier valves located upstream of the tubing hanger.

14 . The system of claim 13 , further comprising a barrier valve disposed along an annulus flowpath within the flowline connection body.

15 . The system of claim 13 , further comprising an annular access valve disposed along an annulus flowpath within the tubing hanger.

16 . The system of claim 13 , further comprising a production swab valve disposed along a production flowpath within the flowline connection body.

17 . The system of claim 13 , further comprising a flow module coupled to and disposed above the flowline connection body, wherein the flow module comprises:
a production wing valve disposed along the production flowpath within the flow module; a crossover valve disposed along the annulus flowpath within the flow module, wherein the annulus flowpath within the flow module couples to the production flowpath within the flow module downstream of the production wing valve; a pressure control valve disposed along the production flowpath, within the flow module downstream of the production wing valve; and a process shut down valve disposed along the production flowpath within the flow module downstream of the pressure control valve.

18 . The system of claim 17 , wherein the flow module further comprises a third primary production barrier valve.

19 . The system of claim 17 , further comprising a jumper and a manifold, wherein the jumper couples the manifold to the flow module.

20 . The system of claim 13 , wherein the flowline connection body does not include a primary production barrier valve capable of shutting in the well.

Assignees

• Dril Quip Inc

Inventors

• Bartlett Chris D
• Mclaughlin Daniel J
• Guillory Ray
• Deberry Blake T
• Smedley Marcus

Classifications

• E21B34/04 Primary

  in underwater well heads · CPC title

• E21B33/035 Primary

  specially adapted for underwater installations (E21B33/043, E21B33/064, E21B33/076 take precedence) · CPC title

• E21B33/038

  Connectors used on well heads, e.g. for connecting blow-out preventer and riser · CPC title