PACKER CUP SYSTEMS FOR USE INSIDE A WELLBORE

Abstract

The present invention provides a packer cup system for use inside a wellbore comprising a packer cup and a backup component coupled thereto. In one configuration, the backup component further comprises an angled support member and a rubber ring disposed between the angled support member and the packer cup. The support member is configured to facilitate uniform expansion of the rubber ring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Implementations of various technologies will hereafter be described with reference to the accompanying drawings. It should be understood, however, that the accompanying drawings illustrate only the various implementations described herein and are not meant to limit the scope of various technologies described herein.

FIG. 1 illustrates a schematic diagram of a formation interval straddle tool that may be used in connection with one or more embodiments of the invention.

FIG. 2 illustrates a cross sectional view of a packer cup system in accordance with one implementation of various technologies described herein.

FIG. 3 illustrates a cross sectional view of a packer cup system in accordance with another implementation of various technologies described herein.

FIG. 4 illustrates a cross sectional view of a packer cup system in accordance with yet another implementation of various technologies described herein.

FIG. 5 illustrates a cross sectional view of a packer cup system in accordance with still another implementation of various technologies described herein.

FIG. 6 illustrates a cross sectional view of a packer cup system in accordance with still yet another implementation of various technologies described herein.

FIG. 7 illustrates a cross sectional view of a packer cup system in accordance with still yet another implementation of various technologies described herein.

FIG. 8 illustrates a cross sectional view of a packer cup system in accordance with yet another implementation of various technologies described herein.

FIG. 9 illustrates an embodiment of a wedge shim of the present invention.

FIG. 10 illustrates an embodiment of the present invention having a wedge shim adjacent the rubber element.

FIG. 11 illustrates an embodiment of a rubber element of the present invention having a chamfer at two distinctive angles.

FIG. 11A is an enlarged view illustration of the chamfered surfaces of FIG. 11.

FIG. 12 illustrates an embodiment of the present invention having an angled support element.

FIG. 13 illustrates an embodiment of the present invention having a wedge shim and an angled support member.

FIG. 14 illustrates an embodiment of the present invention having a wedge shim, a chamfered rubber element and an angled support member.

FIG. 15 illustrates an embodiment of the present invention having a wedge shim, a double chamfered rubber element and an angled support member.

Claims

1. A packer cup system for use inside a wellbore, comprising: a packer cup;a backup component coupled to the packer cup, wherein the backup component comprises a support member and a rubber ring disposed between the support member and the packer cup, wherein the support member is configured to prevent the rubber ring from moving toward the support member; anda tapered element disposed between the rubber ring and the packer cup.

2. The packer cup system of claim 1, wherein the tapered element comprises a wedge shim.

3. The packer cup system of claim 1, wherein the tapered element is integral to the packer cup.

4. The packer cup system of claim 1, wherein the rubber ring has a chamfered surface adapted for engagement with the tapered element.

5. The packer cup system of claim 2, wherein the rubber ring has a chamfer at two distinctive angles on a surface adjacent the wedge shim.

6. The packer cup system of claim 1, wherein the rubber ring further comprises a helical spring circumferentially embedded around the rubber ring.

7. The packer cup system of claim 6, wherein the helical spring is covered by a wire mesh.

8. A packer cup system for use inside a wellbore, comprising: a packer cup; anda backup component coupled to the packer cup, wherein the backup component comprises: a support member comprising an angled surface;a piston moveably disposed against the support member; anda rubber ring disposed between the piston and the packer cup, wherein the piston is configured to move between the support member and the rubber ring.

9. The packer cup system of claim 8, wherein the rubber ring comprises a helical spring circumferentially embedded around the rubber ring.

10. The packer cup system of claim 9, wherein the helical spring is covered by a wire mesh.

11. The packer cup system of claim 8, further comprising a wedge shim disposed between the rubber ring and the packer cup.

12. The packer cup system of claim 11, wherein the rubber ring further comprises a chamfered surface adapted for engagement with the wedge shim.

13. A method of treating a formation, comprising: isolating a zone with a packer cup having a backup system comprising: a support member and a rubber ring disposed between the support member and the packer cup, wherein the support member is configured to prevent the rubber ring from moving toward the support member; anda tapered element disposed between the rubber ring and the packer cup; andpumping a treating fluid into the isolated zone.

14. The method of claim 13, further comprising: conveying the packer cup with coiled tubing.

15. The method of claim 13, wherein the treating fluid is pumped through coiled tubing.