Extendable cutting tools for use in a wellbore
First Claim
1. A tool for use in a well bore, comprisinga first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening;
- a first arm;
pivotally connected to a first piston, and rotationally coupled to the first tubular body,disposed in the opening in a retracted position,movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, andhaving a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile;
the first piston;
disposed in the body bore,having a bore therethrough, andoperable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening;
a lock operable to retain the first piston in the retracted position; and
a second piston operably coupled to the lock,wherein;
the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, andthe first arm rotates about the pivotal connection and relative to the first tubular body during extension from the retracted position to the extended position to accommodate movement of the first arm along the first actuation profile, andthe actuation profiles are disengaged in the retracted position.
9 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the present invention generally relate to extendable cutting tools for use in a wellbore. In one embodiment, a tool for use in a wellbore includes a tubular body having a bore therethrough, an opening through a wall thereof, and a connector at each longitudinal end thereof; and an arm. The arm is pivotally connected to a first piston and rotationally coupled to the body, is disposed in the opening in a retracted position, and is movable to an extended position where an outer surface of the arm extends outward past an outer surface of the body. The tool further includes the first piston. The first piston is disposed in the body bore, has a bore therethrough, and is operable to move the arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening. The tool further includes a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock.
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Citations
33 Claims
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1. A tool for use in a well bore, comprising
a first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening; -
a first arm; pivotally connected to a first piston, and rotationally coupled to the first tubular body, disposed in the opening in a retracted position, movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, and having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile; the first piston; disposed in the body bore, having a bore therethrough, and operable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock, wherein; the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, and the first arm rotates about the pivotal connection and relative to the first tubular body during extension from the retracted position to the extended position to accommodate movement of the first arm along the first actuation profile, and the actuation profiles are disengaged in the retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A tool for use in a well bore, comprising
a first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening; -
a first arm; pivotally connected to a first piston, and rotationally coupled to the first tubular body, disposed in the opening in a retracted position, movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, and having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile; the first piston; disposed in the body bore, having a bore therethrough, and operable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock, wherein; the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, the first arm rotates about the pivotal connection and relative to the first tubular body during extension, each actuation profile has a shoulder and the shoulders are engaged in the extended position, the shoulders are disengaged in the retracted position, each actuation profile further has a longitudinally inclined portion and a longitudinally flat portion, and each shoulder is formed between the respective longitudinally inclined portion and longitudinally flat portion. - View Dependent Claims (29)
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30. A tool for use in a well bore, comprising
a first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening; -
a first arm; pivotally connected to a first piston, and rotationally coupled to the first tubular body, disposed in the opening in a retracted position, movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, and having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile; the first piston; disposed in the body bore, having a bore therethrough, and operable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; a second piston operably coupled to the lock; a fastener pivotally connecting the first arm and the first piston; and a torsion spring disposed around the fastener and biasing the first arm radially inward, wherein; the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, and the first arm rotates about the pivotal connection and relative to the first tubular body during extension. - View Dependent Claims (31)
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32. A tool for use in a well bore, comprising
a first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening; -
a first arm; pivotally connected to a first piston, and rotationally coupled to the first tubular body, disposed in the opening in a retracted position, movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, and having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile; the first piston; disposed in the body bore, having a bore therethrough, and operable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock, wherein; the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, the first arm rotates about the pivotal connection and relative to the first tubular body during extension from the retracted position to the extended position, and each actuation profile has a longitudinally inclined portion, a longitudinally flat portion, and a shoulder formed between the inclined and flat portions. - View Dependent Claims (33)
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Specification