Expandable devices and method

• US 7,086,476 B2
• Filed: 06/02/2003
• Issued: 08/08/2006
• Est. Priority Date: 08/06/2002
• Status: Expired due to Fees

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Johnson, Craig D., Hackworth, Matthew R.
• Primary Examiner(s): NEUDER, WILLIAM P
• Application Number:
  US10/452,322
• Publication Number:
  US 20040026079A1
• Time in Patent Office: 1,163 Days
• Field of Search: 166/380, 166/384, 166/206, 166/207
• US Class Current: 166/380
• CPC Class Codes: E21B 43/103 of expandable casings, screens, liners, or the like
• CPC Class Codes: E21B 43/108 Expandable screens or perforated liners

Abstract

The present system and method comprises an expandable device for use in wellbores. In one embodiment, the present device comprises a plurality of slots disposed within the device. The slots define expansion compensation portions, wherein the compensation portions facilitate radial expansion of the device while concurrently maintaining essentially constant the axial length of the device. The present technique also comprises a method of forming the device in accordance therewith.

Claims

1. An expandable device for use in a wellbore, comprising:

a tubular configured for deployment in a wellbore application, the tubular having a plurality of slots therein, the plurality of slots being configured to enable expansion of the tubular from a first diameter to a second diameter, wherein the tubular comprises a plurality of expansion compensation portions adapted to substantially retard axial contraction of the tubular during radial expansion of the tubular from the first diameter to the second diameter, wherein the expansion compensation portions undergo changes in axial length to enable the radial expansion of the tubular.

2. The device as recited in claim 1, wherein the device comprises a sand-screen.

3. The device as recited in claim 1, wherein the tubular is configured to receive control lines.

4. The device as recited in claim 1, wherein the plurality of slots comprise a first slot pattern and a second slot pattern, wherein the slot patterns define the expansion compensation portions.

5. The device as recited in claim 1, wherein the slots define thick and thin struts respectively.

6. The device as recited in claim 1, wherein the expansion compensation portion defines a spring portion that undergoes the change in axial length.

7. The device as recited in claim 1, wherein the slots generally present a parallelogramic shape.

8. An expandable device for use in a wellbore, comprising:

a tubular configured for deployment in a wellbore application, the tubular having a plurality of slots therein, the plurality of slots being configured to enable expansion of the tubular from a first diameter to a second diameter, wherein the tubular comprises a plurality of expansion compensation portions adapted to substantially retard axial contraction of the tubular during radial expansion of the tubular from the first diameter to the second diameter, wherein the expansion compensation portion defines a rotational segment.

9. An expandable device, comprising:

a wellbore device comprising an expansion section having a plurality of slots disposed therein, wherein each slot outlines a plurality of first members coupled to a plurality of second members;

wherein at least one of the first and second members is adapted to substantially retard axial contraction of the device upon radial expansion of the device, further wherein at least one of the first and the second members comprises a rotational segment.

10. The expandable device as recited in claim 9, further comprising at least one hinge portion coupling the plurality of first members and the plurality of second members.

11. The expandable device as recited in claim 9, wherein at least one of the first and the second members comprises a plastically deformable portion, wherein the plastically deformable portion axially deforms, thereby substantially retarding axial contraction of the device during radial expansion thereof.

12. The expandable device as recited in claim 9, wherein at least one of the first and the second members comprises a spring portion.

13. The expandable device as recited in claim 9, wherein the first members are thicker than the second members.

14. The expandable device as recited in claim 9, wherein the plurality of slots comprise a first slot pattern and a second slot pattern.

15. A system for production of wellbore fluids, comprising:

a wellbore;

a device having a plurality of slots disposed therein, the device further having a collapsed configuration and an expanded configuration, wherein the diameter of the device in the collapsed configuration is less than the diameter of the wellbore;

an expansion compensation member integrally disposed with respect to the device, the expansion compensation member being adapted to change in length and thus retard axial contraction of the device upon radial expansion of the device from the collapsed configuration to the expanded configuration; and

an expansion mechanism, wherein the expansion mechanism biases the device from the collapsed configuration to the expanded configuration.

16. The system as recited in claim 15, wherein the device comprises a sand-screen.

17. The system as recited in claim 15, wherein the device comprises a plurality of slots arranged in a generally parallelogramic shape.

18. The system as recited in claim 15, wherein the expansion compensation member comprises a spring portion.

19. The system as recited in claim 15, wherein the expansion compensation member comprises a rotational segment.

20. The system as recited in claim 15, wherein the expansion compensation member undergoes plastic deformation during expansion.

21. The system as recited in claim 15, wherein the expansion compensation member is adapted to elastically deform.

22. The system as recited in claim 15, wherein the expansion mechanism comprises a cone.

23. A method for deploying an expandable device in a wellbore, comprising:

inserting an expandable device into a wellbore, the device being in a collapsed configuration;

expanding the device to an expanded configuration from the collapse configuration such that the axial length of the device remains substantially constant, the expanding comprising rotating a rotational segment of the device.

24. The method as recited in claim 23, wherein expanding comprises elastically deforming an expansion portion of the device.

25. The method as recited in claim 23, wherein expanding comprises plastically deforming an expansion portion of the device.