TEST DART SYSTEM AND METHOD
First Claim
1. A test dart for wellbore pressure isolation, comprising:
- a body extending from a first end to a second end, the body having a bore extending therethrough, a diameter of the bore being greater at the first end than the second end;
a groove formed proximate the first end and extending radially outward from the bore and into the body;
an anti-rotation pin positioned between the groove and the second end, the anti-rotation pin extending radially outward from the body; and
a check valve positioned in the bore, the check valve enabling a flow in a single direction and being moveable between an open position to enable the flow and a closed position to block the flow.
3 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the present disclosure include a test dart for wellbore pressure isolation. The test dart includes a body extending from a first end to a second end, the body having a bore extending therethrough, a diameter of the bore being greater at a first end than the second end. The test dart also includes a groove formed proximate the first end and extending radially outward from the bore and into the body. Additionally, the test dart includes an anti-rotation pin positioned between the groove and the second end, the anti-rotation pin extending radially outward from the body. The test dart further includes a check valve positioned in the bore, the check valve enabling flow in a single direction and being moveable between an open position to enable the flow and a closed position to block the flow.
13 Citations
20 Claims
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1. A test dart for wellbore pressure isolation, comprising:
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a body extending from a first end to a second end, the body having a bore extending therethrough, a diameter of the bore being greater at the first end than the second end; a groove formed proximate the first end and extending radially outward from the bore and into the body; an anti-rotation pin positioned between the groove and the second end, the anti-rotation pin extending radially outward from the body; and a check valve positioned in the bore, the check valve enabling a flow in a single direction and being moveable between an open position to enable the flow and a closed position to block the flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for isolating regions of a wellbore, the system comprising:
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a unidirectional valve positioned in the wellbore, the unidirectional valve permitting a fluid flow in a downstream direction into the wellbore and restricting the fluid flow in an upstream direction out of the wellbore; and a test dart non-rotationally coupled to the unidirectional valve, the test dart arranged upstream of the unidirectional valve and positioned to block the fluid flow in the downstream direction toward the unidirectional valve. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for isolating a wellbore, the method comprising:
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lowering a test dart into the wellbore, the test dart being coupled to an installation tool; non-rotationally coupling the test dart to a unidirectional valve arranged in the wellbore; and decoupling the installation tool from the test dart. - View Dependent Claims (17, 18, 19, 20)
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Specification