Hydraulic setting tool for liner hanger
AssigneeWeatherford/Lamb, Inc.
InventorsDavid E. Hirth, Patrick G. Maguire
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention relates to hydraulically actuated tools, which may be used to actuate a liner hanger assembly. In one embodiment, the present invention provides a hydraulic setting tool for use in wellbore operations. The setting tool includes a first tubular member and a second tubular member disposed around the outer diameter of the first tubular member. A piston is mechanically attached to an upper portion of the second tubular member and adapted to move axially in relation to the first tubular member. The piston acts to transmit a force to the second tubular member. A slip assembly is operatively connected to the second tubular member and the second tubular member transmits the force to the slip assembly thereby actuating the slip assembly.
Claims15
A liner hanger comprising:
- a tubular for running into a wellbore having:
- a gripping member radially moveable in response to axial movement;
- a polished bore receptacle axially fixed relative to the gripping member;
- a fluid actuated motive member for moving the gripping member axially wherein the fluid actuated motive member is removeable from the wellbore subsequent to its operation;
- and
- a floating piston for actuating the motive member.
A method for setting a tool in a wellbore comprising:
- setting a liner hanger in a tubular therearound wherein the liner hanger comprises a polished bore receptacle connected to a gripping assembly and fixed relative to the gripping assembly;
- pressurizing a chamber;
- transmitting a motive force to the gripping assembly in response to the pressurizing thereby affixing the liner hanger in the tubular;
- and
- actuating a floating piston to pressurize the chamber.
A method for setting a tool in a wellbore, comprising:
- disposing a first tubular around a second tubular;
- compressing a fluid reservoir by hydraulically actuating a piston;
- transmitting an axial force to the first tubular by compressing the fluid reservoir;
- moving the first tubular axially relative to the second tubular;
- and
- actuating a gripping member operatively connected to the first tubular, the second tubular being fixed relative to the gripping member, wherein the gripping member sets the tool in the wellbore.
A setting tool for use in a wellbore, comprising:
- a first tubular member;
- an inner tubular disposed within the inner diameter of the first tubular, the interior of the inner tubular in fluid communication with a fluid chamber,
- a piston operable by the fluid chamber;
- a fluid reservoir;
- a second tubular member disposed around the outer diameter of the first tubular member and axially movable relative to the first tubular member, the second tubular attached to a force application member actuatable by the fluid reservoir;
- and
- a gripping member operatively connected to the second tubular member, the gripping assembly actuatable by the force transmitted to the second tubular member.
Dependencies are inferred from the claim text.