A downhole tool includes an upper wedge member and a lower wedge member. The upper and lower wedge members each have a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof. As the downhole tool actuates from a first state to a second state, th
A downhole tool includes an upper wedge member and a lower wedge member. The upper and lower wedge members each have a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof. As the downhole tool actuates from a first state to a second state, the upper and lower wedge members move axially with respect to a central longitudinal axis through the downhole tool, the upper and lower wedge members move radially-outward with respect to the central longitudinal axis, and the upper and lower wedge members remain coupled to one another as the upper and lower wedge members move.
대표청구항▼
1. A downhole tool, comprising: a plurality of upper wedge members; anda plurality of lower wedge members, wherein each of the upper wedge members and each of the lower wedge members have a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof,
1. A downhole tool, comprising: a plurality of upper wedge members; anda plurality of lower wedge members, wherein each of the upper wedge members and each of the lower wedge members have a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof, each the upper wedge members being positioned circumferentially-between two of the lower wedge members,wherein an inner surface of each of the upper wedge members comprises a shoulder, the shoulders of the upper wedge members together providing a seat feature that protrudes inwardly and is configured to receive an obstructing member, wherein the lower wedge members do not include the seat feature, such that the seat feature is discontinuous as proceeding circumferentially around the downhole tool, andwherein, as the downhole tool actuates from a first state to a second state: the upper and lower wedge members move axially with respect to a central longitudinal axis through the downhole tool;the upper and lower wedge members move radially-outward with respect to the central longitudinal axis; andthe upper and lower wedge members remain coupled to one another as the upper and lower wedge members move. 2. The downhole tool of claim 1, wherein a first side of at least one of the upper wedge members comprises a first coupling feature, wherein a first side of at least one of the lower wedge members comprises a second coupling feature, and wherein the first and second coupling features couple the upper and lower wedge members together. 3. The downhole tool of claim 2, wherein the first side of the at least one of the upper wedge members comprises a first circumferential side thereof with respect to the central longitudinal axis. 4. The downhole tool of claim 2, wherein the first coupling feature comprises a protrusion, and wherein the second coupling feature comprises a recess. 5. The downhole tool of claim 4, wherein the first coupling feature comprises an interference bump. 6. The downhole tool of claim 1, wherein an outer surface of at least one of the upper wedge members, at least one of the lower wedge members, or both comprises a gripping feature. 7. The downhole tool of claim 1, wherein an outer surface of at least one of the upper wedge members, at least one of the lower wedge members, or both defines at least a portion of a circumferential groove. 8. The downhole tool of claim 1, wherein the upper wedge members each at least partially axially-overlap with a respective one of the lower wedge members in the first and second states, and wherein an amount that the upper and lower wedge members at least partially axially-overlap increases proceeding from the first state to the second state. 9. The downhole tool of claim 1, wherein the inner axial ends of the upper and lower wedge members face in opposing axial directions. 10. The downhole tool of claim 1, wherein the inner surface of the upper wedge members and an inner surface of the lower wedge members are each configured to engage and seal with the obstructing member, when the obstructing member is seated on the seat feature. 11. A downhole tool, comprising: a plurality of upper wedge members; anda plurality of lower wedge members, wherein each of the upper wedge members is positioned circumferentially-between two of the lower wedge members, wherein each of the upper and lower wedge members has a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof,wherein an inner surface of each of the upper wedge members comprises a shoulder, the shoulders of the upper wedge members together providing a seat feature that protrudes inwardly and is configured to receive an obstructing member, wherein the lower wedge members do not provide part of the seat feature, such that the seat feature is discontinuous as proceeding circumferentially around the downhole tool, andwherein, as the downhole tool actuates from a first state to a second state: the upper and lower wedge members move axially with respect to a central longitudinal axis through the downhole tool such that a length of the downhole tool decreases;the upper and lower wedge members move radially-outward with respect to the central longitudinal axis such that a diameter of the downhole tool increases; andthe upper and lower wedge members remain coupled to one another one another as the upper and lower wedge members move. 12. The downhole tool of claim 11, wherein a first circumferential side of a first of the upper wedge members comprises a first coupling feature, wherein a first circumferential side of a first of the lower wedge member comprises a second coupling feature, and wherein the first and second coupling features couple the upper and lower wedge members together. 13. The downhole tool of claim 11, wherein the upper and lower wedge members at least partially axially-overlap in the first and second states, wherein outer surfaces of the upper and lower wedge members define portions of a circumferential groove, and wherein the portions of the circumferential groove are aligned when the downhole tool is in the first state to form a continuous circumferential groove. 14. The downhole tool of claim 13, further comprising a containment member positioned in the continuous circumferential groove when the downhole tool is in the first state, wherein the containment member is configured to break when the downhole tool actuates into the second state. 15. A method for actuating a downhole tool in a wellbore, comprising: running the downhole tool into the wellbore in a first state, wherein the downhole tool comprises: a plurality of upper wedge members; anda plurality of lower wedge members, wherein each of the upper wedge members is positioned circumferentially-between two of the lower wedge members, wherein each of the upper and lower wedge members has a circumferential width that decreases proceeding from an outer axial end thereof to an inner axial end thereof;actuating the downhole tool from a first state into a second state by exerting a downward axial force on the upper wedge members and an upward axial force on the lower wedge members, wherein, as the downhole tool actuates from the first state to the second state: the upper and lower wedge members move axially with respect to a central longitudinal axis through the downhole tool such that a length of the downhole tool decreases;the upper and lower wedge members move radially-outward with respect to the central longitudinal axis such that a diameter of the downhole tool increases; andthe upper and lower wedge members remain coupled to one another one another as the upper and lower wedge members move; andintroducing an obstructing member into the wellbore, wherein an inner surface of each of the upper wedge members comprises a shoulder, the shoulders of the upper wedge members together providing a seat feature that protrudes inwardly and is configured to receive the obstructing member, wherein the lower wedge members do not include the seat feature, such that the seat feature is discontinuous as proceeding circumferentially around the downhole tool, and wherein the obstructing member, when seated on the seat feature, prevents fluid flow through the downhole tool in one axial direction. 16. The method of claim 15, wherein the downhole tool is positioned at least partially around a setting tool when the downhole tool is run into the wellbore, and wherein the setting tool exerts the downward axial force on the upper wedge members and the upward axial force on the lower wedge members. 17. The method of claim 16, further comprising withdrawing the setting tool from the downhole tool when the downhole tool is in the second state. 18. The method of claim 15, wherein the obstructing member also causes the upper and lower wedge members to move radially-outward even farther to increase a radially-outward gripping force exerted by the downhole tool against a surrounding tubular member.
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