Releasing a downhole tool
First Claim
1. A wireline release tool, comprising:
- a housing;
an inner mandrel located within the housing and comprising a ramp on an outer surface of the inner mandrel;
a retractable latch that rides on the inner mandrel and comprises a profile formed on an outer surface of the latch, the profile couplable to a wireline tool; and
a linear actuator located within the housing and having a cylinder with a piston located therein that is extendable at least partly from the cylinder and engageable against the inner mandrel, the piston being movable from an unactuated position to an actuated position which applies a force against the inner mandrel when in the actuated position, the profile of the latch supported by the ramp of the mandrel when the actuator is in the unactuated position, the mandrel movable by the linear actuator to remove support of the profile by the ramp when the linear actuator is in the actuated state, the profile decouplable from the wireline tool when the linear actuator is in the actuated state.
2 Assignments
0 Petitions
Accused Products
Abstract
Techniques for releasing a well tool string from a wireline release tool includes initiating actuation of a linear actuator of the wireline release tool, the actuator coupled to an inner mandrel on which a retractable latch rides, the retractable latch including a profile formed on an outer surface of the latch that is coupled to the well tool string; actuating the actuator to move the inner mandrel of the wireline release tool to remove support of the profile by a ramp formed on the outer surface, the profile retracted toward the inner mandrel based on the movement of the inner mandrel; decoupling the profile from the well tool string based on retraction of the profile toward the inner mandrel; and moving the wireline release tool into a position to release the wireline release tool from the well tool string.
-
Citations
26 Claims
-
1. A wireline release tool, comprising:
-
a housing; an inner mandrel located within the housing and comprising a ramp on an outer surface of the inner mandrel; a retractable latch that rides on the inner mandrel and comprises a profile formed on an outer surface of the latch, the profile couplable to a wireline tool; and a linear actuator located within the housing and having a cylinder with a piston located therein that is extendable at least partly from the cylinder and engageable against the inner mandrel, the piston being movable from an unactuated position to an actuated position which applies a force against the inner mandrel when in the actuated position, the profile of the latch supported by the ramp of the mandrel when the actuator is in the unactuated position, the mandrel movable by the linear actuator to remove support of the profile by the ramp when the linear actuator is in the actuated state, the profile decouplable from the wireline tool when the linear actuator is in the actuated state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for releasing a well tool string from a wireline release tool, comprising:
-
initiating actuation of a linear actuator of the wireline release tool located within a housing and having a cylinder with a piston located therein that is extendable at least partly from the cylinder and engageable against an inner mandrel on which a retractable latch rides, the retractable latch comprising a profile formed on an outer surface of the latch that is coupled to the well tool string; exerting a force against the inner mandrel with the piston to move the inner mandrel of the wireline release tool to remove support of the profile by a ramp formed on the outer surface, the profile retracted toward the inner mandrel based on the movement of the inner mandrel; decoupling the profile from the well tool string based on retraction of the profile toward the inner mandrel; and moving the wireline release tool into a position to release the wireline release tool from the well tool string. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A system comprising:
-
a well tool string, comprising; one or more well tools; and a fishneck sub-assembly coupled to an uphole end of the well tool string, the fishneck sub-assembly comprising a shoulder defined on an inner surface of the fishneck sub-assembly near an uphole end of the fishneck sub-assembly; and a release tool, comprising; a housing; an inner mandrel comprising a ramp on an outer surface of the mandrel; a retractable latch that rides on the mandrel and comprises a profile formed on an outer surface of the latch, the profile adapted to couple to the fishneck sub-assembly; and a linear actuator located within the housing and having a cylinder with a piston located therein that is extendable at least partly from the cylinder and engageable against the inner mandrel the piston being movable from an unactuated position to an actuated position, the profile of the latch supported by the ramp of the mandrel and adjacent the shoulder of the fishneck sub-assembly to couple the release tool with the well tool string when the linear actuator is in the unactuated position, the mandrel moved by the linear actuator to remove support of the profile by the ramp when the actuator is in the actuated position. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
Specification