Auto-bleeding setting tool with oil shut-off valve and method

Patent metadata

Field	Value
Publication number	US-10858898-B2
Application number	US-201816026606-A
Country	US
Kind code	B2
Filing date	Jul 3, 2018
Priority date	Apr 20, 2018
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A setting tool for setting an auxiliary tool in a well, the setting tool including a housing having a floating piston, the floating piston separating the housing into a pressure chamber, located upstream the floating piston, and a hydraulic chamber located downstream the floating piston; an internal plug having an upstream end attached to the floating piston and having a downstream end extending into the hydraulic chamber; and a cover-insert member covering the downstream end of the internal plug. The internal plug has an internal passage that fluidly communicates (1) with an internal passage through the floating piston, at one end, and (2) with a port at the other end, and the port is covered by the cover-insert member.

First claim

What is claimed is:

1. A setting tool for setting an auxiliary tool in a well, the setting tool comprising:
a housing having a floating piston, the floating piston separating the housing into (a) a pressure chamber, located upstream the floating piston, and (b) a hydraulic chamber, located downstream the floating piston;
an internal plug having an upstream end that terminates within the floating piston and having a downstream end extending into the hydraulic chamber; and
a cover-insert member covering the downstream end of the internal plug,
wherein the internal plug has an internal passage that fluidly communicates, (1) at one end, with an internal passage extending through the floating piston, and (2) at another end, with a port, and
wherein the port is covered by the cover-insert member.

2. The setting tool of claim 1 , further comprising:
a first shear pin configured to mechanically attach the cover-insert member to the internal plug.

3. The setting tool of claim 2 , further comprising:
an isolation valve assembly which separates the hydraulic chamber from a working chamber, also located inside the housing.

4. The setting tool of claim 3 , wherein the isolation valve assembly comprises:
a body having a bore;
an insert fixedly attached to an inside of the bore of the body; and
an isolation valve located inside a bore of the insert.

5. The setting tool of claim 4 , further comprising:
a second shear pin that attaches the insert to the isolation valve.

6. The setting tool of claim 5 , wherein the first shear pin is stronger than the second shear pin.

7. The setting tool of claim 5 , wherein the first shear pin includes two pins and the second shear pin includes a single pin.

8. The setting tool of claim 4 , wherein the isolation valve comprises:
plural slots located at an upstream end to allow a fluid from the hydraulic chamber to flow into a passage formed between the insert and the isolation valve.

9. The setting tool of claim 8 , wherein the isolation valve comprises:
plural ports located at a downstream end and in fluid communication with the passage so that the fluid from the hydraulic chamber flows into a bore of the isolation valve, through the plural ports and the passage.

10. The setting tool of claim 9 , wherein the bore of the isolation valve directly communicates with the hydraulic chamber.

11. The setting tool of claim 9 , wherein the body of the isolation valve assembly has a port that achieves fluid communication between an outside of the body and the bore of the body.

12. The setting tool of claim 10 , wherein burnt gas under pressure from the pressure chamber is automatically released through the port of the body of the isolation valve assembly, outside the housing, after the first shear pin that mechanically attaches the cover-insert member to the internal plug is broken and after a second shear pin that attaches the insert to the isolation valve is also broken.

13. The setting tool of claim 11 , wherein the plural ports of the isolation valve are misaligned with the port of the body of the isolation valve assembly while the isolation valve is open.

14. The setting tool of claim 13 , wherein a subset of the plural ports of the isolation valve are aligned with the port of the body of the isolation valve assembly when the isolation valve is closed.

15. The setting tool of claim 9 , wherein a subset of the plural ports of the isolation valve fluidly communicate with the working chamber while the isolation valve is open.

16. The setting tool of claim 9 , wherein none of the plural ports of the isolation valve fluidly communicate with the working chamber while the isolation valve is closed.

17. An automatically bleeding off setting tool comprising:
a housing;
a floating piston located inside the housing;
an internal plug having an upstream end located inside the floating piston and having a downstream end extending outside the floating piston; and
a cover-insert member covering the downstream end of the internal plug,
wherein the internal plug has (a) an internal passage that extends only partially along the internal plug and (b) a port that fluidly communicates with the internal passage, but the port is closed by the cover-insert member.

18. The setting tool of claim 17 , further comprising:
a first shear pin configured to mechanically attach the cover-insert member to the internal plug.

19. The setting tool of claim 18 , further comprising:
an isolation valve assembly which separates a hydraulic chamber of the housing from a working chamber, also located inside the housing.

20. The setting tool of claim 19 , wherein the isolation valve assembly comprises:
a body having a bore;
an insert fixedly attached to an inside of the bore of the body; and
an isolation valve located inside a bore of the insert.

21. The setting tool of claim 20 , further comprising:
a second shear pin that attaches the insert to the isolation valve.

22. The setting tool of claim 21 , wherein the first shear pin is stronger than the second shear pin.

23. The setting tool of claim 21 , wherein the first shear pin includes two pins and the second shear pin includes a single pin.

24. The setting tool of claim 23 , wherein the isolation valve comprises:
plural slots located at an upstream end to allow a fluid from the hydraulic chamber to flow into a passage formed between the insert and the isolation valve.

25. The setting tool of claim 24 , wherein the isolation valve comprises:
plural ports located at a downstream end and in fluid communication with the passage so that the fluid from the hydraulic chamber flows into a bore of the isolation valve.

26. The setting tool of claim 25 , wherein the bore of the isolation valve directly communicates with the hydraulic chamber.

27. The setting tool of claim 26 , wherein the body of the isolation valve assembly has a port that achieves fluid communication between an outside of the body and the bore of the body.

28. The setting tool of claim 27 , wherein a burnt gas under pressure from a pressure chamber located in the housing is automatically released through the port of the body of the isolation valve assembly, outside the housing, after the first shear pin and the second shear pin are broken.

29. The setting tool of claim 28 , wherein the plural ports of the isolation valve are misaligned with the port of the body of the isolation valve assembly while the isolation valve is open.

30. The setting tool of claim 29 , wherein a subset of the plural ports of the isolation valve are aligned with the port of the body of the isolation valve assembly when the isolation valve is closed.

31. The setting tool of claim 25 , wherein a subset of the plural ports of the isolation valve fluidly communicate with the working chamber while the isolation valve is open.

32. The setting tool of claim 25 , wherein none of the plural ports of the isolation valve fluidly communicate with the working chamber while the isolation valve is closed.

33. A method for automatically bleeding off a setting tool, the method comprising:
lowering the setting tool into a well, the setting tool having a housing that hosts a floating piston, the floating piston separating the housing into (a) a pressure chamber, located upstre

Assignees

• Geodynamics Inc

Inventors

• Rosenthal Wayne
• Castaneda Jeremy

Classifications

• E21B23/0414

  using explosives · CPC title

• E21B34/063

  Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence) · CPC title

• E21B23/04

  operated by fluid means, e.g. actuated by explosion (E21B23/08 takes precedence) · CPC title

• E21B23/10 Primary

  Tools specially adapted therefor · CPC title

• E21B23/042 Primary

  using a single piston or multiple mechanically interconnected pistons · CPC title