Downhole anchoring systems and methods of using same
First Claim
1. An anchoring system for wellbores, the anchoring system comprising:
- a tubular member having a first end, a second end, a longitudinal axis, an outer wall surface, a bore, a first slip member, and a second slip member, the first and second slip members being movable radially outward from the axis of the tubular member from a run-in position to a set position, wherein the tubular member comprises a collet and each of the first and second slip members are disposed on separate collet fingers,wherein the first slip member comprises a first projection at an upper end of the first slip member, the first projection extending over a first portion of an upper end of the second slip member when the first and second slip members are in their respective run-in positions and, the first projection extending over a second portion of the upper end of the second slip member when the first and second slip members are in their respective set positions,wherein the second slip member includes a detent disposed on the upper end of the second slip member, the detent being in sliding engagement with the first projection of the first slip member when the first and second slip members are in their respective run-in positions, andwherein the detent is disposed in alignment with a center point of the upper end of the second slip member.
3 Assignments
0 Petitions
Accused Products
Abstract
Anchoring systems for disposition in wellbores and tubular devices comprise a tubular member defined by two or more radially expandable slip members. The upper ends of the slip members are shaped such that when the slip members are in their respective run-in positions and in their respective set positions, a portion of an upper end of one slip member overlaps a portion of an upper end of another slip member so that the longitudinal space between each slip member that is created when the slip members are in their set position are blocked by the upper end of at least one of the slip members. Thus, in their set position, the upper end of at least one of the slip members provides a back-up to a sealing element that can be disposed adjacent to and in contact with the upper ends of the slip members when in their set positions.
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Citations
13 Claims
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1. An anchoring system for wellbores, the anchoring system comprising:
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a tubular member having a first end, a second end, a longitudinal axis, an outer wall surface, a bore, a first slip member, and a second slip member, the first and second slip members being movable radially outward from the axis of the tubular member from a run-in position to a set position, wherein the tubular member comprises a collet and each of the first and second slip members are disposed on separate collet fingers, wherein the first slip member comprises a first projection at an upper end of the first slip member, the first projection extending over a first portion of an upper end of the second slip member when the first and second slip members are in their respective run-in positions and, the first projection extending over a second portion of the upper end of the second slip member when the first and second slip members are in their respective set positions, wherein the second slip member includes a detent disposed on the upper end of the second slip member, the detent being in sliding engagement with the first projection of the first slip member when the first and second slip members are in their respective run-in positions, and wherein the detent is disposed in alignment with a center point of the upper end of the second slip member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An anchoring system for wellbores, the anchoring system comprising:
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a tubular member having a first end, a second end, a longitudinal axis, an outer wall surface, a bore, a first slip member, and a second slip member, the first and second slip members being movable radially outward from the axis of the tubular member from a run-in position to a set position; wherein the first slip member comprises a first projection at an upper end of the first slip member, the first projection extending over a first portion of an upper end of the second slip member when the first and second slip members are in their respective run-in positions and, the first projection extending over a second portion of the upper end of the second slip member when the first and second slip members are in their respective set positions; wherein the first slip member further comprises a second projection, the second projection extending over a first portion of an upper end of a third slip member when the first and third slip members are in their respective run-in positions and, the second projection extending over a second portion of the upper end of the third slip member when the first and third slip members are in their respective set positions; wherein the second projection is in sliding engagement with the upper end of the third slip member; wherein the second slip member includes a tab fixedly attached to upper end of the second slip member, the tab being in sliding engagement with the first projection of the first slip member when the first and second slip members are in their respective run-in positions, and wherein the tab is disposed in alignment with a center point of the upper end of the second slip member; and wherein the third slip member includes a tab fixedly attached to upper end of the third slip member, the tab being in sliding engagement with the second projection of the first slip member when the first and third slip members are in their respective run-in positions, and wherein the tab is disposed in alignment with a center point of the upper end of the third slip member.
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Specification