SYSTEM AND METHOD FOR DOWNHOLE OPERATION USING PRESSURE ACTIVATED AND SLEEVE VALVE ASSEMBLY

• US 20070119598A1
• Filed: 12/21/2006
• Published: 05/31/2007
• Est. Priority Date: 08/21/1998
• Status: Active Grant

• Current Assignee: Superior Energy Services LLC (SESI Holdings, Inc.)
• Original Assignee: BJ Services Co. USA (Baker Hughes Company)
• Inventors: Ross, Richard, Turner, Dewayne, Traweek, Marvin
• Granted Patent: US 7,665,526 B2
• Time in Patent Office: Days
• US Class Current: 166/386
• CPC Class Codes: E21B 34/102 with means for locking the closing element in open or closed position E21B34/105 and E21B34/108 take precedence
• CPC Class Codes: E21B 43/08 Screens or liners expandable screens or liners E21B43/108
• CPC Class Codes: E21B 43/088 Wire screens comprising porous materials E21B43/082; comprising woven materials E21B43/084
• 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
• CPC Class Codes: E21B 43/14 Obtaining from a multiple-zone well

Abstract

An isolation system for producing oil and gas from one or more formation zones and methods of use are provided comprising one or more pressure activated and tool shiftable valve assemblies. The tool shiftable valve may be actuated before or after actuation of the pressure activated valve.

Claims

1-22. -22. (canceled)

23. An isolation system for a subterranean well, comprising:

an isolation pipe; and

a valve assembly coupled to the isolation pipe and comprising a pressure activated valve and a tool shiftable valve, wherein the valve assembly provides at least two independent flow paths in to and/or out of the isolation pipe.

24. The system of claim 23, wherein the tool shiftable valve comprises a sliding sleeve shiftable between an opened position and a closed position.

25. The system of claim 24, wherein the isolation pipe defines at least one port, and wherein the open position of the tool shiftable valve allows fluid flow through the port.

26. The system of claim 23, further comprising:

a base pipe;

the isolation pipe being disposed within the base pipe, defining a volume between the base pipe and the isolation pipe;

the pressure activated valve comprising a valve adapted to allow flow between the volume formed by the isolation pipe and the base pipe and an internal portion of the isolation pipe.

27. The system of claim 23, wherein said pressure activated valve comprises:

an outer sleeve having at least one opening and an inner sleeve, the sleeves being movable relative to each other and configurable in at least locked-closed, unlocked-closed, and open configurations, wherein the inner sleeve covers the at least one opening in the locked-closed and unlocked-closed configurations and the inner sleeve does not cover the at least one opening in the open configuration; and

a pressure area on at least one of the sleeves, wherein a pressure acting on the pressure area configures the outer sleeve and inner sleeve between the locked-closed and unlocked-closed configurations.

28. The system of claim 27, further comprising a lock between the inner sleeve and the outer sleeve that locks the inner sleeve and the outer sleeve in the locked-closed configuration.

29. The system of claim 27, further comprising a spring member adapted to bias the inner sleeve relative to the outer sleeve so that the inner sleeve does not obstruct the at least one opening of the outer sleeve in the open configuration when the lock is released.

30. The system of claim 27, wherein the inner sleeve comprises at least one opening that is selectably alignable with the at least one opening in the outer sleeve to allow fluid flow there through.

31. The system of claim 27, further comprising a production screen, wherein fluid passing through the production screen is communicable with the pressure activated valve and the tool shiftable valve.

32. The system of claim 23, wherein the production screen is wrapped around the outside of the valve assembly.

33. A method for isolating a production zone of a well, comprising:

inserting a pipe into the well, the pipe having a valve assembly comprising a pressure activated valve and a tool shiftable valve;

shifting the tool shiftable valve while the vavle assembly is disposed in the well;

then

opening the pressure activated valve by pressurized fluid acting on the pressure activated valve.

34. The method of claim 33, further comprising performing a gravel pack operation on the well while the tool shiftable valve is open and the pressure activated valve is closed.

35. The method of claim 33, wherein the pipe comprises an isolation string.

36. The method of claim 33, further comprising allowing production fluid to flow through the pressure activated valve, the tool shiftable valve, or a combination thereof.

37. The method of claim 33, wherein shifting the tool shiftable valve comprises using a shifting tool to actuate the tool shiftable valve.

38. The method of claim 33, wherein the pressure activated valve comprises an inner sleeve and an outer sleeve having at least one opening, the sleeves being movable relative to each other in at least two directions and initially secured relative to each other in at least one direction, wherein the opening of the pressure activated valve comprises:

applying a pressurized fluid to a pressure area on at least one of the sleeves to cause the sleeves to move relative to each other in a first direction;

reducing pressure to allow the sleeves to move relative to each other in a second direction;

at least partially uncovering the at least one opening to allow fluid flow therethrough.

39. The method of claim 33, further comprising biasing the sleeves relative to each other with a spring member and allowing the sleeves to move relative to each other in the second direction with the spring member after reducing the pressure.