Safety valve

Patent metadata

Field	Value
Publication number	US-2023151714-A1
Application number	US-202117904657-A
Country	US
Kind code	A1
Filing date	Feb 24, 2021
Priority date	Feb 24, 2020
Publication date	May 18, 2023
Grant date	—

Abstract

A well completion including an electric safety valve and a female inductive coupler is provided. A corresponding male inductive coupler is aligned with the female inductive coupler to provide for the transfer of power and/or telemetry during deployment. The male inductive coupler can be removed for normal operation. In the event of safety valve failure during operation, a service male inductive coupler and contingency safety valve can be deployed such that the service male inductive coupler is aligned with the female inductive coupler.

First claim

What is claimed is:

1 . A well completion comprising:
a tubing hanger; tubing extending from the tubing hanger; an electric safety valve disposed along the tubing; and a female inductive coupler disposed along the tubing between the tubing hanger and the electric safety valve.

2 . The well completion of claim 1 , the electric safety valve comprising a valve and an actuator.

3 . The well completion of claim 2 , wherein the actuator is an electro-hydraulic pump.

4 . The well completion of claim 2 , wherein the actuator is an electro-hydraulic actuator.

5 . The well completion of claim 2 , wherein the actuator is an electro-mechanical actuator.

6 . The well completion of claim 1 , wherein the electric safety valve comprises a flapper valve.

7 . The well completion of claim 1 , further comprising a service male inductive coupler configured to be disposed within the tubing during deployment of the well completion such that the service male inductive coupler is aligned with the female inductive coupler, the service male inductive coupler configured to facilitate transfer of power and/or telemetry data to and/or from the electric safety valve.

8 . The well completion of claim 1 , further comprising one or more wires extending between and connecting the electric safety valve and the tubing hanger, wherein in normal operation, the female inductive coupler is configured to be transparent and allow for a wired connected between the electric safety valve and the tubing hanger.

9 . The well completion of claim 8 , the one or more wires comprising a first wire extending between and connecting the tubing hanger and the female inductive coupler and a second wire extending between and connecting the female inductive coupler and the electric safety valve.

10 . The well completion of claim 1 , further comprising a workstring configured to be disposed within the tubing during an intervention operation of the well completion, the workstring comprising an intervention male inductive coupler and a contingency electric safety valve connected by a wire, the workstring disposed within the tubing such that the intervention male inductive coupler is aligned with the female inductive coupler.

11 . The well completion of claim 10 , wherein there is no electrical wiring extending from the intervention male inductive coupler to the surface and wherein power and/or telemetry is provided to the contingency electric safety valve via the female inductive coupler.

12 . The well completion of claim 10 , wherein an outer diameter of the contingency electric safety valve is smaller than an inner diameter of the electric safety valve.

13 . A method of intervention for the well completion of claim 1 in the case of failure of the electric safety valve, the method comprising:
deploying a workstring in the tubing, the workstring comprising a contingency electric safety valve and an intervention male inductive coupler, until the intervention male inductive coupler is aligned with the female inductive coupler; and
providing power and/or telemetry to and/or from the contingency electric safety valve via the intervention male inductive coupler and the female inductive coupler.

14 . A method of deploying a well completion, the method comprising:
disposing a tubing string in a well, the tubing string comprising an electric safety valve and a female inductive coupler disposed above the electric safety valve; inserting a service male inductive coupler within the tubing string such that the service inductive male coupler is aligned with the female inductive coupler; and retrieving the service male inductive coupler.

15 . The method of claim 14 , further comprising transferring power and/or telemetry to and/or from the electric safety valve via the female inductive coupler and the service male inductive coupler.

16 . The method of claim 14 , further comprising after retrieving the service male inductive coupler, transferring power and/or telemetry to and/or from the electric safety valve via a wired connection between the surface and the electric safety valve during normal operation.

17 . The method of claim 16 , wherein transferring power and/or telemetry to and/or from the electric safety valve via the wired connection comprises transferring power and/or telemetry via a first wire extending from a tubing hanger to the female inductive coupler and a second wire extending from the female inductive coupler to the electric safety valve.

18 . A method of intervention for a well completion, the method comprising:
deploying a workstring within tubing of the well completion, the well completion comprising an electric safety valve and a female inductive coupler positioned along the tubing, and the workstring comprising an intervention male inductive coupler, a contingency electric safety valve, and a wire extending between and connecting the intervention male inductive coupler and the contingency electric safety valve; and positioning the workstring within the tubing such that the intervention male inductive coupler is aligned with the female inductive coupler.

19 . The method of claim 18 , further comprising positioning the workstring within the tubing such that the contingency electric safety valve is positioned at least partially below the electric safety valve such that production fluid flows through the contingency electric safety valve, bypassing the electric safety valve.

20 . The method of claim 18 , further comprising providing power and/or telemetry to and/or from the contingency electric safety valve via the intervention male inductive coupler and the female inductive coupler.

Assignees

• Schlumberger Technology Corp

Inventors

• Garsault Sylvain
• Phan Hy

Classifications

• E21B34/066 Primary

  electrically actuated · CPC title

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title

• E21B2200/05

  Flapper valves · CPC title

• E21B34/06

  in wells · CPC title

• F16K1/2007 Primary

  specially adapted operating means therefor (operating means per se F16K31/00) · CPC title