摘要:
The present invention relates to a pulling tool (1) for latching onto an object (30), such as a plug, downhole, in a well bore The pulling tool comprises a base element (10) extending in a longitudinal direction from a proximal end (10a) for being connected to a wireline tool to a distal end (10b) adapted to engage the object, and a latching mechanism (13) encircling the base element and being movable in the longitudinal direction between a deactivated position and an activated position, comprising a piston sleeve (13), a key element (17) for latching onto the downhole object, the key element being slidably received inside the piston sleeve and extending from an end of the piston sleeve towards the distal end of the base element, and a piston spring forcing (16a) the piston sleeve in the longitudinal direction towards the proximal end of the base element. Furthermore, the present invention relates to a downhole retrieval system for pulling an object in a wellbore and to a method of connecting and disconnecting such retrieval system to a downhole object.
摘要:
Embodiments of the present invention generally relate to signal operated tools for milling, drilling, and/or fishing operations. In one embodiment, a mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked position to the unlocked position in response to receiving the instruction signal.
摘要:
A hydraulic well tool (50;200;300) is provided for running into a flow conduit (24) of a well on a handling string (60), such as reeled tubing or jointed pipe, for generating and applying an axial force to an object in the well. The tool is anchored in the flow conduit by an anchoring mechanism (75) actuatable by fluid pressure in the handling string and it also includes a piston/cylinder arrangement (80,104) that is actuatable by fluid pressure in the handling string for moving the object. The tool may be provided with means to permit increasing the fluid pressure for actuation of the anchoring mechanism and the piston/cylinder arrangement. Such means including flow restrictors (117) ball valves (120), velocity check valves (92) and plugs. The displacement of the object is achieved hydraulically while the well tool is anchored in the flow conduit and without axially stressing the handling strip. The anchoring mechanism may have piston-type anchor members (510) each formed with a sinusoidal seal ring recess (520) at its inner end for increasing its stroke, and with retraction springs (526) to avoid obstructing the longitudinal body bore.
摘要:
Implementations described herein include a hoisting device and method for handling, coupling and recovery of tubular members such as drill string components. The hoisting device has a self-energizing gripping means configued to releasably engage a drill string component. In one aspect, the self-energizing gripping means can be operable to increase at least one of a radial biasing force and a contact friction force applied to a drill string component, causing the gripping means to increase the overall gripping force applied to the component with minimal effort exerted by a hoisting device operator.
摘要:
A downhole tool (1) method and device, in which the downhole tool (1) is designed to form part of a pipe string (4), and in which a valve (24) is provided with a passage (120) for fluid, the passage (120) including an opening and closing mechanism (78), and the method including : connecting a first valve portion (26) to the pipe string (4); connecting a second valve portion (28) telescopic relative to the first valve portion (26) to a downhole object (20); pre-tensioning the first valve portion (26) and the second valve portion (28) in the direction of contraction to an initial position, in which the opening and closing mechanism (78) is open; and moving the first valve portion (26) relative to the second valve portion (28) in the direction of extension to close the opening and closing mechanism (78).
摘要:
Embodiments of the invention generally relate to tools and methods for hanging and/or expanding liner strings. In one embodiment, a method of hanging a liner assembly from a previously installed tubular in a wellbore includes running the liner assembly and a setting tool into the wellbore using a run-in string. The setting tool includes an isolation valve and the liner assembly includes a liner hanger and a liner string. The method further includes sending an instruction signal from the surface to the isolation valve, wherein the isolation valve closes in response to the instruction signal and isolates a setting pressure in the setting tool from the liner string; and increasing fluid pressure in the setting tool, thereby setting the liner hanger.
摘要:
A hydraulic well tool (50;200;300) is provided for running into a flow conduit (24) of a well on a handling string (60), such as reeled tubing or jointed pipe, for generating and applying an axial force to an object in the well. The tool is anchored in the flow conduit by an anchoring mechanism (75) actuatable by fluid pressure in the handling string and it also includes a piston/cylinder arrangement (80,104) that is actuatable by fluid pressure in the handling string for moving the object. The tool may be provided with means to permit increasing the fluid pressure for actuation of the anchoring mechanism and the piston/cylinder arrangement. Such means including flow restrictors (117) ball valves (120), velocity check valves (92) and plugs. The displacement of the object is achieved hydraulically while the well tool is anchored in the flow conduit and without axially stressing the handling strip. The anchoring mechanism may have piston-type anchor members (510) each formed with a sinusoidal seal ring recess (520) at its inner end for increasing its stroke, and with retraction springs (526) to avoid obstructing the longitudinal body bore.
摘要:
The present invention relates to a downhole system (100) for collecting an object in a well (4). The downhole system for collecting an object in a well comprises a casing (3) comprising a plurality of tubular sections (5), and a restriction (6) having a first inner diameter (Dr), an object (2) having an outer diameter (Do) which is larger than the first inner diameter of the restriction in order that the object is capable of seating in the restriction, and a collection tool (1) comprising a tool section (7) adapted to provide an axial force in a first direction, and a collecting section (8) having an outer diameter, the collecting section being connected to the tool section and comprising an abutment edge (9) forming a leading edge (10A) when the tool section moves the collection section in the first direction for abutting the object, wherein the outer diameter of the collection section is smaller than the outer diameter of the object.
摘要:
The present invention relates to a pulling tool (1) for latching onto an object (30), such as a plug, downhole, in a well bore The pulling tool comprises a base element (10) extending in a longitudinal direction from a proximal end (10a) for being connected to a wireline tool to a distal end (10b) adapted to engage the object, and a latching mechanism (13) encircling the base element and being movable in the longitudinal direction between a deactivated position and an activated position, comprising a piston sleeve (13), a key element (17) for latching onto the downhole object, the key element being slidably received inside the piston sleeve and extending from an end of the piston sleeve towards the distal end of the base element, and a piston spring forcing (16a) the piston sleeve in the longitudinal direction towards the proximal end of the base element. Furthermore, the present invention relates to a downhole retrieval system for pulling an object in a wellbore and to a method of connecting and disconnecting such retrieval system to a downhole object.