Completion assembly with bypass for reversing valve

Patent metadata

Field	Value
Publication number	US-9745827-B2
Application number	US-201514590636-A
Country	US
Kind code	B2
Filing date	Jan 6, 2015
Priority date	Jan 6, 2015
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

An apparatus for use in a wellbore includes an outer assembly and inner assembly. The outer assembly includes a set down profile, a first flow device for supplying a fluid to a zone in the wellbore and a second flow device for providing a flow path from the formation to inside of the outer assembly. The inner assembly includes a frac port for supplying a fluid from the inner assembly to the first flow device, a valve below the frac port that remains closed when a fluid at a selected flow rate flows downward from above the valve, and a bypass device uphole of the valve. The bypass device opens when the inner assembly is set down in the set down profile and provides a flow path from below the frac port to an annulus between the inner assembly and the outer assembly above the frac port.

First claim

The invention claimed is:

1. An apparatus for use in a wellbore, comprising:
an outer assembly for placement in the wellbore, the outer assembly including a set down profile, a first flow device for supplying a fluid to a zone in the wellbore and a second flow device for providing a flow path from the zone to inside of the outer assembly; and
an inner assembly for placement inside the outer assembly, the inner assembly including:
a frac port for supplying a fluid from the inner assembly to the first flow device, and
a bypass device downhole of the frac port, wherein the bypass device opens when the inner assembly is set down in the set down profile and provides a flow path from below the frac port to an annulus between the inner assembly and the outer assembly above the frac port.

2. The apparatus of claim 1 , wherein the bypass device includes an outer profile that engages with the set down profile of the outer string assembly to set down the bypass device inside the outer assembly.

3. The apparatus of claim 2 , wherein the bypass device opens from a closed position when the bypass device is set in the set down profile.

4. The apparatus of claim 3 , wherein the bypass device opens only when the bypass device is set in the set down profile.

5. The apparatus of claim 1 , wherein the bypass device includes a movable sleeve over a port in the inner assembly and wherein the movable sleeve moves to open the port when the bypass device is set in the set down profile in the outer assembly.

6. The apparatus of claim 5 , wherein:
the inner assembly includes a mandrel having a port; and
the bypass device includes:
a collet having an outer profile that engages with the set down profile in the outer assembly to cause the bypass device to set down in the outer assembly; and
a sleeve over the port and wherein the mandrel moves when the bypass device is set in the outer assembly to open the port to establish fluid communication between the second flow and the annulus.

7. The apparatus of claim 5 , wherein the bypass device includes a force application device against the sleeve to keep the port in the inner assembly closed until the bypass device is set down in the set down profile in the outer assembly.

8. The apparatus of claim 1 , further comprising a packer and a sand screen and wherein the first flow device is between the packer and the sand screen.

9. The apparatus of claim 1 , wherein the frac port aligns with the first flow device when the bypass device is set in the set down profile.

10. The apparatus of claim 9 , wherein one of the inner assembly and the outer assembly includes a first seal above the first flow device and a second seal below the first flow device to isolate an annulus between the inner assembly and the outer assembly about the first flow device when the bypass device is set in the set down profile in the outer assembly.

11. A method of completing a wellbore, comprising:
placing an outer assembly in the wellbore that includes a first flow device for supplying a fluid to a zone in the wellbore and a second flow device for providing a flow path from the zone to inside of the outer assembly;
placing an inner assembly inside the outer assembly, the inner assembly including a frac port and a bypass device below the frac port that opens to provide an opening in the inner string assembly when the bypass device is set in the outer assembly;
setting the bypass device in the outer assembly to provide the opening in the inner assembly below the frac port;
isolating the zone; and
opening the first flow device and the second flow device to establish a flow path from the zone to an annulus between the inner assembly and the outer assembly above the frac port via the opening in the inner string assembly to perform a treatment operation.

12. The method of claim 11 , wherein the treatment operation includes supplying a fluid under pressure to the zone via the frac port and the first flow device.

13. The method of claim 12 , further comprising:
stopping supply of the fluid after a selected time period; and
monitoring pressure of the zone from the annulus.

14. The method of claim 13 , further comprising determining an inflection point from the monitored pressure.

15. The method of claim 11 , wherein the outer assembly includes a set down profile and the bypass device includes an outer profile configured to set down in the set down profile, wherein the bypass device opens only when the outer profile of the bypass device is set in the set down profile in the outer assembly.

16. The method of claim 11 , further comprises a reversing valve below the bypass device that remains open during the treatment operation to prevent flow of fluid from the zone to the annulus.

17. The method of claim 11 , wherein the bypass device includes a movable sleeve over a port in the inner assembly that moves to open the port when the bypass device is set in the set down profile in the outer assembly.

18. The method of claim 17 , wherein:
the inner assembly includes a mandrel having a port; and
the bypass device includes:
a collet having an outer profile that engages with the set down profile in the outer assembly to cause the bypass device to set down in the outer assembly; and
a sleeve over the port and wherein the mandrel moves when the bypass device is set down in the outer set down profile in the outer assembly to open the port to establish fluid communication between the inner assembly and the outer assembly.

19. The method of claim 18 , wherein the bypass device includes a force application device against the sleeve to keep the port in the inner assembly closed until the bypass device is set down in the set down profile in the outer assembly.

20. The method of claim 11 , further comprising a packer and a sand screen and wherein the first flow device is between the packer and the sand screen and wherein the frac port aligns with the first flow device when the bypass device is set in the set down profile.

21. The method of claim 20 , wherein one of the inner assembly and the outer assembly includes a first seal above the first flow device and a second seal below the first flow device to isolate an annulus between the inner assembly and the outer assembly about the first flow device when the bypass device is set in the set down profile in the outer assembly.

Assignees

• Allen Jason A
• O'Brien Robert S
• Hammer Aaron C
• Cayson Andrew James
• Baker Hughes Inc

Inventors

• Allen Jason A
• O'Brien Robert S
• Hammer Aaron C
• Cayson Andrew James

Classifications

• E21B2200/06

  Sleeve valves · CPC title

• E21B33/124

  Units with longitudinally-spaced plugs for isolating the intermediate space · CPC title

• E21B34/12 Primary

  operated by movement of casings or tubings · CPC title

• E21B2034/007

  Fixed Constructions · mapped topic