Hanger, hanger tool, and method of hanger installation
AssigneeCameron International Corporation
InventorDennis P. Nguyen
Life of this patent
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Abstract
A system includes a hanger running tool and a pressure port. The hanger running tool includes an upper body, a lower body disposed about the upper body, a first lock ring disposed between the upper body and the lower body, the first lock ring comprising a tapered top surface, a first push ring disposed between the upper body and the lower body, the first push ring comprising a tapered bottom surface that interfaces with the tapered top surface of the first lock ring, an upper piston disposed about the upper body, and a lower piston disposed about the first lock ring, the first push ring, and the lower body, extending axially downward. The pressure port is in fluid communication with a volume between the upper piston and the lower piston.
Claims20
A system, comprising:
- a hanger running tool, comprising:
- an upper body;
- a lower body disposed about the upper body;
- a tool lock ring disposed between the upper body and the lower body, the tool lock ring comprising a tapered top surface;
- a tool push ring disposed between the upper body and the lower body, the tool push ring comprising a tapered bottom surface that interfaces with the tapered top surface of the tool lock ring;
- an upper piston disposed about an exterior of the upper body, wherein the upper piston is coupled to the tool push ring by a linkage;
- and
- a lower piston disposed about the tool lock ring, the tool push ring, and the lower body, wherein the lower piston extends axially downward;
- and
- a pressure port in fluid communication with a volume between the upper piston and the lower piston, wherein, in operation, a pressure applied via the pressure port acts on the upper piston, lifting the tool push ring, enabling the tool lock ring to expand radially outward, disengaging the hanger running tool from a hanger.
A system, comprising:
- a hanger comprising:
- a hanger body comprising a first set of teeth facing radially outward, configured to interface with a tool lock ring of a hanger running tool;
- a hanger lock ring comprising a first tapered top surface;
- and
- a hanger push ring comprising a first tapered bottom surface that interfaces with the first tapered top surface of the hanger lock ring such that when the hanger push ring moves axially downward, the hanger lock ring radially contracts, and when the hanger push ring moves axially upward, the hanger lock ring radially expands, wherein the hanger push ring is configured to contact a lower piston of the hanger running tool;
- wherein, in operation, applying a first pressure to a pressure port causes axially downward movement of the lower piston, driving the hanger push ring axially downward, driving the hanger lock ring radially outward;
- and
- wherein, in operation, applying a second pressure to the pressure port causes axially upward movement of an upper piston, disengaging the first set of teeth from the hanger running tool, wherein the upper piston is coupled to a tool push ring by a linkage.
A method, comprising:
- inserting a hanger and hanger running tool into a wellhead assembly;
- applying a first pressure to a pressure port of the wellhead assembly, causing a lower piston on the hanger running tool to move axially downward, wherein axially downward movement of the lower piston results in axially downward movement of a hanger push ring of the hanger, wherein axially downward movement of the hanger push ring causes a hanger lock ring to radially expand into an annular recess of a spool adapter;
- applying a second pressure to the pressure port of the wellhead assembly, causing an upper piston to move axially upward, wherein the upper piston is coupled to a tool push ring by a linkage, wherein axially upward movement of the upper piston causes axially upward movement of the tool push ring of a hanger running tool, wherein axially upward movement of the tool push ring enables a tool lock ring of the hanger running tool to radially expand, releasing the hanger running tool from the hanger;
- and
- removing the hanger running tool from the wellhead assembly.
Dependencies are inferred from the claim text.