CONTROL AND SUPPLY UNIT

• US 20130319652A1
• Filed: 11/19/2009
• Published: 12/05/2013
• Est. Priority Date: 11/19/2009
• Status: Active Grant

• Current Assignee: Onesubsea IP UK Limited (Schlumberger NV)
• Original Assignee: Cameron International Corporation (Schlumberger NV)
• Inventors: Thies, Reinhard, Keese, Joachim, Tegt, Florian, Abicht, Daniel
• Granted Patent: US 9,376,894 B2
• Time in Patent Office: Days
• US Class Current: 166/65.1
• CPC Class Codes: E21B 33/0355 Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
• CPC Class Codes: E21B 41/0007 for underwater installations E21B41/005, E21B41/04, E21B41/06, E21B41/08, E21B41/10 take precedence
• CPC Class Codes: E21B 41/0085 Adaptations of electric power generating means for use in boreholes
• CPC Class Codes: E21B 43/12 Methods or apparatus for controlling the flow of the obtained fluid to or in wells E21B43/25 takes precedence; valve arrangements E21B34/00

Abstract

A control and supply unit for an actuating device of a choke, a valve, a blow-up preventer or some other device applied in the field of oil and natural gas production includes at least an auxiliary power supply which is specially rechargeable, and a connecting means used for an exchange of data and/or for the purpose of voltage supply. To improve such a control and supply unit, such that the respective connecting means satisfy a relevant standard and has a compact structural design and is also easily accessible from outside, the control and supply unit includes, as a connecting means, a communication interface for connecting thereto a field bus and a voltage supply connection for connecting thereto a voltage supply line.

Claims

1. A control and supply unit for an actuating device of a choke, a valve, a blow-out preventer or another device applied in the field of oil and natural gas production, said unit comprising

an auxiliary power supply;

and

an electrical connection for an exchange of data and/or voltage supply, wherein the electrical connection comprises a communication interface configured to couple to a field bus and a voltage supply connection configured to couple to a voltage supply line.

2. The control and supply unit of claim 1, wherein the unit is implemented separately of the actuating device.

3. The control and supply unit of claim 1 further comprising a unit housing, which is releasably secured to the actuating device.

4. The control and supply unit of claim 1 wherein the field bus is a CAN bus.

5. The control and supply unit of claim 1, wherein the field bus and the voltage supply line couplings are implemented as separate connections.

6. The control and supply unit of claim 1 further comprising a second control and supply unit coupled to the actuating device for redundancy.

7. The control and supply unit of claim 3 wherein at least the communication interface, the auxiliary power supply and a motor control unit are arranged in the unit housing.

8. The control and supply unit of claim 7 wherein the communication interface and the voltage supply connection are formed on a supply and communication assembly.

9. The control and supply unit of claim 8 wherein the supply and communication assembly comprises at least connections for supplying electric power to the motor control unit, the auxiliary power supply and/or at least one sensor unit of the actuating device.

10. The control and supply unit of claim 8 wherein the supply and communication assembly comprises bus connections for communication with and/or control of the auxiliary power supply, the motor control unit and/or the sensor unit of the actuating device.

11. The control and supply unit of claim 8 wherein the supply and communication assembly is provided with an earthing terminal connected at least to the auxiliary power supply and/or the motor control unit.

12. The control and supply unit of claim 3 wherein an inert gas atmosphere is provided in the unit housing.

13. The control and supply unit of claim 3 wherein the unit housing is provided with a plug connection device, which is accessible from outside, for the communication interface and the voltage supply connection.

14. The control and supply unit of claim 1 wherein the unit is connected to a submarine control module for communication and/or voltage supply.

15. The control and supply unit of claim 1 wherein the auxiliary power supply is rechargeable.