Test packer and method for use
A downhole tool having a throughbore is disclosed for use in a tubular located in a wellbore. The downhole tool has a sealing element configured to seal an annulus between the downhole tool and an inner wall of the tubular; at least one flow path formed in the downhole tool, wherein the flow path is configured to allow fluids in the annulus to flow past the sealing element when the sealing element is in a sealed position; and at least one valve in fluid communication with the flow path and configured to allow the fluids to flow through the flow path in a first direction while preventing the fluids from flowing through the flow path in a second direction. A guard may be installed proximate anchor elements. The guard extends radially beyond an outer diameter of the anchor elements when the anchor elements are in a retracted position.
1. A downhole tool having a throughbore for use in a tubular located in a wellbore, the downhole tool comprising:
a sealing element configured to seal an annulus between the downhole tool and an inner wall or the tubular;
a flow path formed in the downhole tool, wherein the flow path is configured to allow fluids in the annulus to flow past the sealing element when the sealing element is in a sealed position;
a valve in fluid communication with the flow path and configured to allow the fluids to flow through the flow path in a first direction while preventing the fluids from flowing through the flow path in a second direction;
a run-in flow path configured to allow the fluids to flow through the downhole tool and past the sealing element prior to sealing the sealing element; and
a second valve configured to close the run-in flow path upon actuation of the sealing element.
2. The downhole tool of claim 1 , wherein a mode of actuation of the sealing element is selected from the group of modes of actuation consisting of hydraulically, hydrostatically, radio frequency signal, mechanically with an application of weight, and by a combination of the foregoing.
3. The downhole tool of claim 2 , further comprising an anchor element configured to secure the downhole tool to the inner wall of the tubular.
4. The downhole tool of claim 3 , further comprising a guard proximate the anchor element wherein the guard extends radially beyond an outer diameter of the anchor element when the anchor element is in a retracted position.
5. The downhole tool of claim 3 , further comprising at least one lock configured to lock out the anchor element after the anchor element has been disengaged from the tubular.
6. The downhole tool of claim 2 , wherein the mode of actuation of the downhole tool further comprises the application of weight to the downhole tool against a liner top.
7. The downhole tool of claim 1 , wherein the second valve further comprises a sleeve.
8. The downhole tool of claim 1 , wherein the valve further comprises a check valve configured to allow fluid to flow from an annulus below the sealing element to an annulus above the sealing element.
9. The downhole tool of claim 1 , wherein the valve further comprises a flapper valve configured to allow fluid to flow from an annulus below the sealing element to an annulus above the sealing element.
10. The downhole tool of claim 1 , wherein the valve further comprises a control valve configured to allow fluid to flow from an annulus below the sealing element to an annulus above the sealing element.
11. The downhole tool of claim 1 , further comprising a mandrel configured to support the sealing element on the downhole tool.
12. The downhole tool of claim 11 , further comprising a flow path mandrel configured to house the flow path.
13. The downhole tool of claim 12 , wherein the flow path mandrel is supported by the mandrel radially outward of the mandrel.
14. The downhole tool of claim 12 , further comprising a rotational lock configured to prevent relative rotation between the mandrel and at least one portion of the downhole tool.
15. The downhole tool of claim 14 , wherein the at least one portion of the downhole tool is selected from the group of the flow path mandrel, the sealing element, and an anchor.
16. The downhole tool of claim 14 , wherein the rotational lock comprises at least one key configured to engage at least one key slot.
17. The downhole tool of claim 11 , wherein the mandrel is unitary.
18. A packer for use in a wellbore, comprising:
a body having an axial throughbore;
a sealing element mounted to the body for sealing an annulus between the packer and the wellbore;
a first fluid bypass which allows the fluid in the annulus to be displaced around the sealing element while the sealing element is not in sealing engagement with the wellbore; and
a second fluid bypass which allows fluid in the annulus to be displaced around the sealing element while the sealing element is in sealing engagement with the wellbore.
19. The packer of claim 18 , wherein when the sealing element is not in sealing engagement with the wellbore, the second fluid bypass is closed.
20. The packer of claim 18 , wherein when the sealing element is in sealing engagement with the wellbore, the first fluid bypass is closed.
21. The packer of claim 18 , wherein one of the first and second fluid bypasses further comprises a check valve.
22. The packer of claim 18 , further comprising an anchor element configured to secure the body to an inner wall of the wellbore.
23. The packer of claim 22 , further comprising at least one lock configured to lock out the anchor element after the anchor element has been disengaged from the wellbore.
24. The packer of claim 18 , further comprising a mandrel configured to support the sealing element on the packer.
25. The packer of claim 24 , further comprising a flow path mandrel configured to house the second fluid bypass.
26. The packer of claim 25 , wherein the flow path mandrel is supported by the mandrel radially outward of the mandrel.
27. The packer of claim 25 , further comprising a rotational lock configured to prevent relative rotation between the mandrel and at least one portion of the downhole tool.
28. The packer of claim 24 , wherein the mandrel is unitary.