Chemical injection system

Patent metadata

Field	Value
Publication number	US-11047208-B2
Application number	US-201715677860-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Aug 15, 2017
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A technique facilitates both actuation of a well tool and chemical injection at a corresponding well zone or well zones. In a multi-zone operation, the well system may comprise a plurality of operating modules coupled with corresponding actuators and chemical injection devices. The well system is deployed downhole to a desired location in a borehole, e.g. a wellbore. The operating modules may be selectively shifted via electrical input to enable a desired chemical injection and/or actuation of the actuator (and thus the well tool) at desired well zones. In some embodiments, the operating modules may comprise contingency circuits to enable the chemical injection without electrical input.

First claim

What is claimed is:

1. A system for use in a well, comprising:
a plurality of operating modules, each operating module being coupled with a corresponding actuator system and a corresponding chemical injection system, each operating module being controllable to enable selective movement of a corresponding tool actuator via the corresponding actuator system and injection of a chemical via the corresponding chemical injection system, and each operating module comprising a first solenoid operated valve operable via electric power to cause actuation of the corresponding tool actuator and a second solenoid operated valve operable via electric power to enable injection of the chemical via the corresponding chemical injection system; and
a surface control system coupled with the plurality of operating modules via a plurality of hydraulic lines including at least one chemical injection line.

2. The system as recited in claim 1 , wherein each of the operating modules of the plurality of operating modules is positioned at a different well zone along a wellbore.

3. The system as recited in claim 1 , wherein the corresponding tool actuator is part of a flow control valve shiftable between different flow positions.

4. The system as recited in claim 1 , wherein electrical power is provided to the first and second solenoid operated valves via an electric line coupled with the surface control system.

5. The system as recited in claim 1 , wherein the plurality of hydraulic lines comprises an open hydraulic line, a close hydraulic line, and the at least one chemical injection line routed from the surface control system.

6. The system as recited in claim 1 , wherein each operating module comprises a normally closed pilot operated check valve.

7. The system as recited in claim 1 , wherein each operating module comprises a normally open pilot operated check valve.

8. The system as recited in claim 1 , wherein each operating module comprises two pilot operated check valves.

9. A system, comprising:
a well system deployed downhole in a wellbore and coupled with a control system via a plurality of hydraulic lines, the plurality of hydraulic lines comprising one open hydraulic line, one close hydraulic line, and one chemical injection line, the well system comprising:
a plurality of operating modules disposed in corresponding well zones along the wellbore, each operating module being coupled with a corresponding actuator and a corresponding chemical injection device, each operating module being controllable via electrical signals to enable selective movement of the corresponding actuator and injection of a chemical via the corresponding chemical injection device, and the open hydraulic line, the close hydraulic line, and the chemical injection line coupled to each of the plurality of operating modules.

10. The system as recited in claim 9 , wherein the electrical signal is provided via an electric line extending downhole from the control system.

11. The system as recited in claim 9 , wherein the control system is a surface control system.

12. The system as recited in claim 9 , wherein each operating module comprises a normally closed pilot operated check valve.

13. The system as recited in claim 9 , wherein each operating module comprises a normally open pilot operated check valve.

14. A method, comprising:
providing a well system with a plurality of operating modules coupled with corresponding actuators and chemical injection modules;
conveying the well system downhole to a desired location in a borehole;
selectively shifting operating modules of the plurality of operating modules via electrical input to enable a desired injection of a chemical via the chemical injection module and actuation of the actuator, wherein selectively shifting comprises using one or more check valves in each operating module; and
controlling the selective shifting of the operating modules via a control system, an electric line, and a plurality of hydraulic lines, the plurality of hydraulic lines comprising one open hydraulic line, one close hydraulic line, and one chemical injection line.

15. The method as recited in claim 14 , wherein selectively shifting comprises electrically actuating at least one of a plurality of solenoid operated valves in each operating module.

16. The method as recited in claim 14 , wherein selectively shifting further comprises using one or more solenoid operated valves in each operating module.

Assignees

• Schlumberger Technology Corp

Inventors

• Halily Soufiane
• Gokdag Emrah
• Prost Jerome
• Bansal Richa
• Singh Parvesh

Classifications

• E21B34/066 Primary

  electrically actuated · CPC title

• E21B43/162

  Injecting fluid from longitudinally spaced locations in injection well · CPC title

• E21B34/16 Primary

  Control means therefor being outside the borehole {(control systems for submerged well heads E21B33/0355)} · CPC title