Expandable hanger with anchor feature
The present disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, more particularly, to an improved liner hanger system. A downhole expandable liner hanger positionable in a subterranean wellbore may comprise an expansion element. The expansion element may comprise a tubular body. The expansion element may comprise one or more annular seals bonded to the tubular body. The expansion element may comprise a first spike extending from the tubular body. The expansion element may comprise a second spike extending from the tubular body. The downhole expandable liner hanger may further comprise a first slip ring, wherein the first slip ring is disposed around the tubular body of the expansion element between the first spike and the second spike, wherein the first slip ring is configured to expand radially as the expansion element expands.
1. A downhole expandable liner hanger positionable in a subterranean wellbore, comprising:
an expansion element, wherein the expansion element comprises:
a tubular body;
one or more annular seals bonded to the tubular body, the one or more annular seals configured to seal against a tubular string exterior to the tubular body;
a first spike extending from the tubular body; and a second spike extending from the tubular body; and
a slip ring disposed around the tubular body of the expansion element between the first spike and the second spike, wherein the slip ring is configured to expand radially as the expansion element expands, wherein the slip ring occupies a majority of an axial distance extending from the first spike to the second spike, wherein the tubular body comprises at least one curved surface that curves along the axial distance between the first and second spikes.
2. The downhole expandable liner hanger of claim 1 , wherein the first spike and the second spike are trapezoidal.
3. The downhole expandable liner hanger of claim 1 , wherein a portion of the tubular body is tapered.
4. A downhole expandable liner hanger positionable in a subterranean wellbore, comprising:
an expansion element, wherein the expansion element comprises:
a tubular body;
one or more annular seals bonded to the tubular body;
a first spike extending from the tubular body; and
a second spike extending from the tubular body; and
a slip ring disposed around the tubular body of the expansion element between the first spike and the second spike, wherein the slip ring is configured to expand radially as the expansion element expands, wherein an exterior surface of the expansion element comprises a compound curvature.
5. A downhole expandable liner hanger positionable in a subterranean wellbore, comprising:
an expansion element, wherein the expansion element comprises:
a tubular body;
one or more annular seals bonded to the tubular body, the one or more annular seals configured to seal against a tubular string exterior to the tubular body;
a first spike extending from the tubular body; and
a second spike extending from the tubular body; and
a slip ring disposed around the tubular body of the expansion element between the first spike and the second spike, wherein the slip ring is configured to expand radially as the expansion element expands, wherein an exterior surface of the expansion element is concave and an interior side of the expansion element is convex.
6. The downhole expandable liner hanger of claim 1 , wherein an exterior surface of the expansion element is convex and an interior surface of the expansion element is convex.
7. The downhole expandable liner hanger of claim 1 , wherein the slip ring comprises a body and a plurality of teeth.
8. The downhole expandable liner hanger of claim 7 , wherein the plurality of teeth are disposed on an external side of the body.
9. The downhole expandable liner hanger of claim 7 , wherein the plurality of teeth are disposed uniformly along the external side of the outer diameter of the body, wherein each one of the plurality of teeth have the same dimensions.
10. The downhole expandable liner hanger of claim 7 , wherein the plurality of teeth are disposed at a thirty degree angle sloping upwards or downwards in relation to the tubular string.
11. The downhole expandable liner hanger of claim 7 , wherein the plurality of teeth are surface hardened by flame hardening, laser transformation hardening, e-beam hardening, induction hardening, or combinations thereof.
12. The downhole expandable liner hanger of claim 1 , wherein the slip ring is constrained from moving axially between the first spike and the second spike.
13. The downhole expandable liner hanger of claim 1 , wherein the slip ring is coated with a material selected from a group consisting of MoS2, a solid film lubricant, QPQ, or combinations thereof.
14. The downhole expandable liner hanger of claim 1 , wherein the at least one curved surface comprises a first curved surface that is opposite to a second curved surface, wherein each curved surface curves along the axial distance between the first and second spikes.
15. A downhole expandable liner hanger positionable in a subterranean wellbore, comprising:
an expansion element, wherein the expansion element comprises:
a tubular body;
one or more annular seals bonded to the tubular body;
a first spike extending from the tubular body; and
a second spike extending from the tubular body; and
a slip ring disposed around the tubular body of the expansion element between the first spike and the second spike, wherein the slip ring is configured to expand radially as the expansion element expands, wherein the slip ring is free-floating, wherein the slip ring is configured to translate between the first spike and the second spike and rotate around the expansion element.
16. The downhole expandable liner hanger of claim 1 , wherein the slip ring comprises a slot extending through a body of the slip ring.
17. The downhole expandable liner hanger of claim 16 , wherein the slip ring is a C-ring.
18. The downhole expandable liner hanger of claim 17 , wherein the slip ring is in contact with a first elastomer and a second elastomer, wherein the first elastomer is in contact with the first spike, wherein the second elastomer is in contact with the second spike.
19. A tubular string positionable in a subterranean wellbore, comprising:
a liner,
a downhole expandable liner hanger at an upper end of the liner, wherein the downhole expandable liner hanger comprises:
a tubular expansion element having a reduced diameter with respect to the liner;
one or more annular seals bonded to the tubular expansion element, the one or more annular seals configured to seal against a tubular exterior to the tubular string;
a first spike extending from the tubular expansion element; and
a second spike extending from the tubular expansion element; and
a slip ring, wherein the slip ring is disposed around a tubular body of the expansion element between the first spike and the second spike, wherein the slip ring is configured to expand radially as the expansion element expands, wherein the slip ring occupies a majority of an axial distance extending from the first spike to the second spike, wherein the tubular body of the expansion element comprises at least one curved surface that curves along the axial distance between the first and second spikes.
20. The tubular string of claim 19 , wherein the slip ring is in contact with a first elastomer and a second elastomer, wherein the first elastomer is in contact with the first spike, wherein the second elastomer is in contact with the second spike.