Synchronic dual packer with energized slip joint
First Claim
1. A dual packer comprising:
- a first packing element movable between a set position and a running position;
a first sleeve having a first continuous j-slot track that extends completely around a perimeter of the first sleeve, wherein movement of a first pin along the first continuous j-slot track actuates the first packing element between the set position and the running position;
a second packing element movable between a set position and a running position;
a second sleeve having a second continuous j-slot track that extends completely around a perimeter of the second sleeve, wherein movement of a second pin along the second continuous j-slot track actuates the second packing element between the set position and the running position, wherein the second j-slot track is inverted with respect to the first j-slot track; and
a slip joint positioned between the first packing element and the second packing element, wherein the slip joint is configured to change a length between the first and second packing elements.
3 Assignments
0 Petitions
Accused Products
Abstract
A downhole tool having a first packing element and a second packing element configured to synchronically set to selectively hydraulically isolate a portion of the wellbore. The lower packing element may be first set against the well with the upper packing element next being set against the well. A slip joint permits a change in distance between the packing elements during the setting of the packing elements. The slip joint may be energized to apply a force to the lower packing element to prevent the unsetting of the lower packing element during the setting of the upper packing element. A resilient member may be used to energize the slip joint or the slip joint could be hydraulically or pneumatically energized. Once both packing elements are set, the wellbore may then be treated by flowing fluid out of a ported sub positioned between the packing elements.
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Citations
22 Claims
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1. A dual packer comprising:
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a first packing element movable between a set position and a running position; a first sleeve having a first continuous j-slot track that extends completely around a perimeter of the first sleeve, wherein movement of a first pin along the first continuous j-slot track actuates the first packing element between the set position and the running position; a second packing element movable between a set position and a running position; a second sleeve having a second continuous j-slot track that extends completely around a perimeter of the second sleeve, wherein movement of a second pin along the second continuous j-slot track actuates the second packing element between the set position and the running position, wherein the second j-slot track is inverted with respect to the first j-slot track; and a slip joint positioned between the first packing element and the second packing element, wherein the slip joint is configured to change a length between the first and second packing elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system to isolate and treat a portion of a wellbore comprising:
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an upper packer; a first sleeve having a continuous j-slot track that extends completely around a perimeter of the first sleeve, wherein movement of a first pin along the continuous j-slot track of the first sleeve actuates the upper packer between a set position and a running position; a lower packer; a second sleeve having a continuous j-slot track that extends completely around a perimeter of the second sleeve wherein the j-slot track of the second sleeve is inverted with respect to the j-slot track of the first sleeve, wherein movement of a second pin along the continuous j-slot track of the second sleeve actuates the lower packer between a set position and a running position; a ported sub being connected between the upper packer and the lower packer; and a slip joint being connected between the upper packer and the lower packer, the slip joint is configured to change a length between the upper and lower packers. - View Dependent Claims (11, 12, 13, 14)
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15. A method of isolating a portion of a wellbore comprising:
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running a tool on a work string into a wellbore; positioning the tool adjacent a portion of the wellbore; picking up the work string to move a first pin along a continuous j-slot track of a first sleeve that extends completely around a perimeter of the first sleeve and to move a second pin along a continuous j-slot track of a second sleeve that extends completely around a perimeter of the second sleeve, wherein the j-slot track of the second sleeve is inverted with respect to the j-slot track of the first sleeve; setting a lower packer of the tool; applying a force to the set lower packer; and setting an upper packer of the tool after setting the lower packer. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification