Multi-cycle ball activated circulation tool with flow blocking capability
View Patent ↗A valve and method of use wherein the valve includes a housing having an axial flowbore defined along its length. A lateral fluid flow port is disposed through the housing. A piston sleeve is disposed within the flowbore and is selectively moveable to block flow through the lateral flow port. The valve can be moved between operating positions wherein flow through the lateral flow port is blocked or allowed and axial flow through the flowbore is blocked or permitted.
1. A valve comprising:
a housing defining an axial flowbore along its length;
a lateral fluid flow port disposed through the housing that provides fluid communication between the flowbore and an area radially surrounding the housing;
a piston sleeve disposed within the flowbore and moveable to selectively block fluid flow through the lateral flow port;
the valve being moveable between:
an initial operating position wherein fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is blocked and each of:
a lateral flow operating position wherein axial fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is permitted; and
an alternate operating position wherein axial fluid flow through the flowbore is blocked and flow through the lateral fluid flow port is permitted.
2. The valve of claim 1 further comprising an upper ball seat that is operably associated with the piston sleeve, the upper ball seat adapted to capture and release a small actuation ball, a medium-sized actuation ball or a large actuation ball.
3. The valve of claim 2 wherein the valve is moved from the initial operating position to the lateral flow operating position by landing a small or medium-sized actuation ball onto the upper ball seat to shift the piston sleeve from a position wherein it blocks fluid flow through the lateral fluid flow port to a position wherein it does not block fluid flow through the lateral fluid flow port.
4. The valve of claim 1 further comprising a lower ball seat located within the flowbore below the piston sleeve, the lower ball seat adapted to:
capture and release a large actuation ball or a medium-sized actuation ball; and
allow a small actuation ball to pass through.
5. The valve of claim 4 wherein the lower ball seat is located within a ball catcher sub, the ball catcher sub having a retention chamber to receive an actuation ball and maintain said actuation ball outside of the axial flowbore.
6. The valve of claim 1 wherein the valve is moved from the lateral flow or alternate operating position back to the initial operating position by landing a large actuation ball onto the upper ball seat to shift the piston sleeve from the position wherein it does not block fluid flow through the lateral fluid flow port to a position wherein it does block fluid flow through the lateral fluid flow port.
7. The valve of claim 1 wherein the valve is moved to the alternate operating position by landing a medium-sized actuation ball onto the lower ball seat to block axial fluid flow through the valve.
8. A valve comprising:
a housing defining an axial flowbore along its length;
a lateral fluid flow port disposed through the housing that provides fluid communication between the flowbore and an area radially surrounding the housing;
a piston sleeve disposed within the flowbore and moveable to selectively block fluid flow through the lateral flow port;
the valve being moveable between:
a) an initial operating position wherein fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is blocked and each of:
b) a lateral flow operating position wherein axial fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is permitted;
c) an alternate operating position wherein axial fluid flow through the flowbore is
blocked and flow through the lateral fluid flow port is permitted; and
an upper ball seat adapted to capture and release a small actuation ball, a medium-sized actuation ball or a large actuation ball.
9. The valve of claim 8 further comprising:
a lower ball seat adapted to capture and release a large actuation ball or a medium-sized actuation ball and allow a small actuation ball to pass through without being captured.
10. The valve of claim 9 wherein the valve is moved from the initial operating position to the alternate operating position by:
landing a medium-sized actuation ball onto the upper ball seat to shift the piston sleeve from the position wherein it does not block fluid flow through the lateral fluid flow port to a position wherein it does block fluid flow through the lateral fluid flow port; and
thereafter landing the medium-sized actuation ball onto the lower ball seat to block axial fluid flow through the axial flowbore.
11. The valve of claim 8 wherein the valve is moved from the initial operating position to the lateral flow operating position by landing a small actuation ball onto the upper ball seat to shift the piston sleeve from a position wherein it blocks fluid flow through the lateral fluid flow port to a position wherein it does not block fluid flow through the lateral fluid flow port.
12. The valve of claim 9 wherein the lower ball seat is located within a ball catcher sub, the ball catcher sub having a retention chamber to receive an actuation ball and maintain said actuation ball outside of the axial flowbore.
13. The valve of claim 8 wherein the valve is moved from the lateral flow or alternate operating position back to the initial operating position by landing a large actuation ball onto the upper ball seat to shift the piston sleeve from the position wherein it does not block fluid flow through the lateral fluid flow port to a position wherein it does block fluid flow through the lateral fluid flow port.
14. A method of operating a valve having a housing defining an axial flowbore along its length, a lateral fluid flow port disposed through the housing, and a piston sleeve disposed within the flowbore and moveable to selectively block fluid flow through the lateral flow port, the method having the steps of:
flowing fluid through the flowbore;
moving the valve from an initial operating position wherein fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is blocked to each of a) a lateral flow operating position wherein axial fluid flow through the flowbore is permitted and flow through the lateral fluid flow port is permitted, and b) an alternate operating position wherein axial fluid flow through the flowbore is blocked and flow through the lateral fluid flow port is permitted; and
moving the valve back to the initial operating position.
15. The method of claim 14 wherein the step of moving the valve from the initial operating position to the lateral flow operating position comprises disposing a first actuation ball into the flowbore.
16. The method of claim 15 wherein the step of moving the valve from the initial operating position to the alternate operating position comprises disposing an actuation ball into the flowbore having a diameter that is larger than that of the first actuation ball.
17. The method of claim 15 wherein the step of moving the valve back to the initial operating position further comprises disposing a large actuation ball into the flowbore, the large actuation ball having a diameter that is larger than that of the first actuation ball.
18. The method of claim 17 wherein the step of moving the valve back to the initial operating position further comprises moving at least one actuating ball from the flowbore into a retention chamber that lies radially outside of the flowbore.