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US 7,395,862 B2Granted
Combination jar and disconnect tool
AssigneeBJ Services Company
InventorsRichard J. Ross, Dewayne M. Turner
Life of this patent
Estimating the term…
Abstract
A combination jarring tool and disconnect device is disclosed in which the jarring events may be followed by separate disconnect event, or in which the jarring events may coincide with disconnect events. The tool generally comprises a housing and a sleeve in concentric arrangement and a disconnect interface. A plurality of axial and rotational locks is used to prevent premature energization of the jarring and disconnect events.
Claims19
A combination jar and disconnect tool comprising:
- a housing having an end with threads of a first hand for mating with another threaded component;
- a sleeve having threads of the first hand on one end for mating with another threaded component, the sleeve slidably disposed within the housing such that the threaded sleeve end is disposed on the tool at an end opposite from the housing threaded end;
- a plurality of cooperating jarring surfaces disposed on the sleeve and housing;
- a disconnect joint coupled to either the sleeve or the housing, the interface having threads of a hand opposite to the first handed threads;
- an axial locking element that fixes the sleeve to the housing against relative axial movement;
- an anti-rotation element that prevents relative rotation between the sleeve and the housing;
- a rotational locking element that fixes the disconnect joint together against relative rotation;
- wherein the axial locking element may be selectively unlocked to allow the sleeve to move axially relative to the housing to impart a jarring force;
- and
- wherein the rotational locking element may be unlocked so that relative rotation within the disconnect joint in a first hand tightening direction unscrews the disconnect joint.
7 more elements
A combination jar and disconnect tool comprising:
- a housing having an pin end with threads of a first hand for mating with another threaded component;
- a sleeve having threads of the first hand on a box end for mating with another threaded component, the sleeve slidably disposed within the housing such that the box end is disposed on the tool at an end opposite from the housing pin end;
- a plurality of cooperating jarring surfaces disposed on the sleeve and housing;
- a disconnect joint coupled to the housing to disconnect the pin end from the rest of the housing, the joint having threads of a hand opposite to the pin and box;
- a shear pin system that fixes the sleeve to the housing against relative axial movement;
- an anti-rotation element that prevents relative rotation between the sleeve and the housing at selected axial relationships between the sleeve and housing;
- a rotational locking element that fixes the disconnect joint together against relative rotation;
- wherein the axial locking element may be selectively unlocked to allow the sleeve to move axially relative to the housing to impart a jarring force;
- and
- wherein the rotational locking element may be selectively unlocked so that relative rotation within the disconnect joint in a first hand tightening direction unscrews the disconnect joint.
7 more elements
Dependencies are inferred from the claim text.