| CPC E21B 23/01 (2013.01) [E21B 43/127 (2013.01); E21B 33/0415 (2013.01)] | 20 Claims |
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1. A tool assembly for anchoring and/or catching well equipment within a well casing, the tool assembly comprising:
an elongated, cylindrical mandrel having a central longitudinal axis and being configured to couple at one end to the well equipment;
a control pin stationarily coupled to and projecting radially outward from the exterior of the mandrel;
a control body comprising a control body wall with a central opening that is mounted over the mandrel, the mandrel being movable within the central opening to allow longitudinal and rotational movement of the mandrel relative to the control body, the control body having at least one drag body configured to engage the well casing to provide a degree of resistance to movement of the control body relative to the well casing and/or mandrel;
at least one cone having a tapered exterior surface that tapers radially inwardly along the length of the cone to a narrow end, the at least one cone being coupled to the mandrel with the narrow end of the cone facing the control body;
a slip assembly associated with the at least one cone comprising a slip housing coupled to one end of the control body that faces the at least one cone and at least one slip body that is carried by the slip housing, the at least one slip body being configured to contact and slide along the tapered exterior surface of the cone so that the at least one slip body is forced radially outward by the cone to facilitate engagement of the slip body with the well casing during anchoring and/or catching of the tool assembly within the well casing when the tool assembly is changed to a set condition, and wherein the slip body is moved away from the at least one cone and retracts radially inward so that the at least one slip body is disengaged from the well casing when the tool assembly is changed to a released condition;
a set of interconnected slots formed in the control body wall of the control body that are configured to receive the control pin, with the control pin traveling within the set of interconnected slots, the interconnected slots comprising a run slot at a first circumferential position of the control body wall, the run slot having a longitudinal length that limits the distance the control pin and mandrel travel longitudinally relative to the control body so that the tool assembly is maintained in the released condition while the control pin resides within the run slot, the interconnected slots further comprising a set slot that is spaced circumferentially apart from and adjacent to the run slot on the control body wall, the run slot and set slot being joined together by a slot passage that allows the control pin to move between the run slot and the set slot when the mandrel is rotated about the central longitudinal axis, and wherein the set slot has a longitudinal length that allows the control pin and mandrel to travel longitudinally relative to the control body to allow the tool assembly to be moved to the set condition; and
a reinforcement device configured to reinforce areas of the control body wall surrounding at least one end of the run slot, the reinforcement device comprising a reinforcement plate secured to the control body wall of the control body that reinforces all or a portion of the areas surrounding at least one end of the run slot the reinforcement plate comprising:
a main portion of the reinforcement plate that overlays the set slot and is secured to areas of the control body wall surrounding the set slot; and
a projecting portion that projects from the main portion and is configured to overlay areas immediately adjacent to the at least one end of the run slot.
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