Modular boost system for a jack
AssigneeHalliburton Energy Services, Inc.
InventorHerwig Michael Sredensek
Life of this patent
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Abstract
A modular boost system can be added to a jack to enable greater lift capacity of the jack. One example can involve a jack that is positionable at a well surface for moving a tubing string through a wellbore in a subterranean formation. The jack can include a frame and an adjustable plate that is alternately (i) attachable at a stationary location in the frame for fixing the adjustable plate at the stationary location or (ii) detachable from the stationary location in the frame to enable the adjustable plate to vertically move within the frame. A boost cylinder can be removably coupled to the adjustable plate and a base for selectively supplying an additional lift capability to the jack.
Claims18
A system comprising:
- a jack positionable at a well surface for moving a tubing string through a wellbore in a subterranean formation, the jack comprising:
- a frame;
- a movable plate having a first coupling element for selectively securing the movable plate to the tubing string;
- an adjustable plate that is alternately (i) attachable at a stationary location in the frame for fixing the adjustable plate at the stationary location and (ii) detachable from the stationary location in the frame to enable the adjustable plate to vertically move within the frame, wherein the adjustable plate has a second coupling element for selectively securing the adjustable plate to the tubing string, and wherein the adjustable plate is positioned between the movable plate and a base;
- and
- at least one hydraulic cylinder coupled between the movable plate and a base plate of the jack for applying vertical force to the movable plate to move the tubing string through the wellbore;
- and
- a boost cylinder removably couplable between the adjustable plate and the base for selectively supplying an additional lift capability to the jack, the boost cylinder being separate from the at least one hydraulic cylinder.
A method for installing a boost cylinder in a jack, the method comprising:
- providing a jack having a frame, a movable plate, an adjustable plate positioned between the movable plate and a base, and at least one hydraulic cylinder that is separate from the boost cylinder and that is coupled between a base plate and the movable plate for applying vertical force to the movable plate to move a tubing string through a wellbore;
- positioning the boost cylinder between the base and the adjustable plate of the jack;
- coupling the boost cylinder to the base and the adjustable plate of the jack;
- and
- detaching the adjustable plate from a stationary location in the frame of the jack to enable the adjustable plate to vertically move in response to vertical force supplied by the boost cylinder.
A method of using a jack with a modular boost system to move a tubing string in a wellbore, the method comprising:
- positioning the tubing string through a first opening in a base plate of a frame of the jack and a second opening in an adjustable plate of the jack;
- retracting at least one hydraulic cylinder coupled between the base plate and a movable plate of the jack to a retracted position;
- securing the tubing string to the adjustable plate via a first coupling element fixed to the adjustable plate;
- expanding a boost cylinder coupled between a base and the adjustable plate to a first expanded position, wherein the boost cylinder is part of the modular boost system and separate from the at least one hydraulic cylinder;
- securing the tubing string to the movable plate via a second coupling element fixed to the movable plate;
- and
- expanding the at least one hydraulic cylinder to a second expanded position to move the tubing string through the wellbore.
Dependencies are inferred from the claim text.