Extendable cutting tools for use in a wellbore
First Claim
1. A tool for use in a wellbore, comprisinga first tubular body having:
- a bore therethrough,an opening through a wall thereof, anda first actuation profile formed in a surface thereof adjacent the opening;
a first arm;
pivotally connected to a first piston,rotationally coupled to the first body,having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile,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, androtatable about the pivotal connection and relative to the first body during extension from the retracted position to the extended position to accommodate movement of the first arm along the first actuation profile,wherein the actuation profiles are disengaged in the retracted position;
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 first piston bore exceeding fluid pressure in the opening and by moving longitudinally relative to the first body, thereby moving the first arm along the first actuation profile;
an annular control module, comprising;
a central bore therethrough;
a lock operable to retain the first piston in the retracted position; and
an electronics package in communication with an antenna and having a controller operable to release the lock in response to receiving a first instruction signal from the antenna; and
the antenna in communication with the central bore for receiving the first instruction signal from a radio frequency identification (RFID) tag pumped through the central bore.
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.
61 Citations
39 Claims
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1. A tool for use in a wellbore, comprising
a first tubular body having: -
a bore therethrough, an opening through a wall thereof, and a first actuation profile formed in a surface thereof adjacent the opening; a first arm; pivotally connected to a first piston, rotationally coupled to the first body, having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile, 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 rotatable about the pivotal connection and relative to the first body during extension from the retracted position to the extended position to accommodate movement of the first arm along the first actuation profile, wherein the actuation profiles are disengaged in the retracted position; 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 first piston bore exceeding fluid pressure in the opening and by moving longitudinally relative to the first body, thereby moving the first arm along the first actuation profile; an annular control module, comprising; a central bore therethrough; a lock operable to retain the first piston in the retracted position; and an electronics package in communication with an antenna and having a controller operable to release the lock in response to receiving a first instruction signal from the antenna; and the antenna in communication with the central bore for receiving the first instruction signal from a radio frequency identification (RFID) tag pumped through the central bore. - 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)
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26. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a controller operable to release the lock in response to receiving a first instruction signal, wherein the lock comprises; a hydraulic chamber; a position piston disposed in the hydraulic chamber and engaged with the first piston; a first valve in fluid communication with the hydraulic chamber and operable by the controller; a balance chamber; a compensating piston disposed in the balance chamber; a first passage connecting the hydraulic and balance chambers, wherein the first valve is disposed in the first passage; and a spring biasing the first piston toward the retracted position, wherein; the first valve operates as a check valve in a closed position, and the check valve is oriented to prevent flow from the hydraulic chamber to the balance chamber and allow flow from the balance chamber to the hydraulic chamber. - View Dependent Claims (27)
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28. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a controller operable to release the lock in response to receiving a first instruction signal, wherein the lock comprises; a hydraulic chamber; a position piston disposed in the hydraulic chamber and engaged with the first piston; a first valve in fluid communication with the hydraulic chamber and operable by the controller; a balance chamber; a compensating piston disposed in the balance chamber; a first passage connecting the hydraulic and balance chambers, wherein the first valve is disposed in the first passage; and a spring biasing the first piston toward the retracted position, wherein; the first valve is a shutoff valve, and the lock further comprises; a second passage connecting the chambers; and a check valve disposed in the second passage and operable to prevent flow from the hydraulic chamber to the balance chamber and allow flow from the balance chamber to the hydraulic chamber. - View Dependent Claims (29)
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30. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; a controller operable to release the lock in response to receiving a first instruction signal, wherein the lock comprises; a hydraulic chamber; a position piston disposed in the hydraulic chamber and engaged with the first piston; a first valve in fluid communication with the hydraulic chamber and operable by the controller; a balance chamber; a compensating piston disposed in the balance chamber; a first passage connecting the hydraulic and balance chambers, wherein the first valve is disposed in the first passage; and a spring biasing the first piston toward the retracted position; and an electric pump disposed in the first passage and operable to pump hydraulic fluid from the balance chamber to the hydraulic chamber. - View Dependent Claims (31)
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32. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a controller operable to release the lock in response to receiving a first instruction signal, wherein; the first tubular body has a first actuation profile formed in a surface thereof adjacent the opening, the first arm has a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile, 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, 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 (33, 34, 35)
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36. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; a controller operable to release the lock in response to receiving a first instruction signal, wherein; the first tubular body has a first actuation profile formed in a surface thereof adjacent the opening, the first arm has a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile, 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; 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. - View Dependent Claims (37)
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38. A tool for use in a wellbore, comprising
a first tubular body having a bore therethrough and an opening through a wall thereof; -
a first arm; pivotally connected to the body or a first piston, disposed in the opening in a retracted position, and movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body; 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 first piston bore exceeding fluid pressure in the opening; an annular control module, comprising; a central bore therethrough; a lock operable to retain the first piston in the retracted position; and an electronics package in communication with an antenna and having a controller operable to release the lock in response to receiving a first instruction signal from the antenna; and the antenna in communication with the central bore for receiving the first instruction signal from a radio frequency identification (RFID) tag pumped through the central bore, wherein; the first arm is pivotally connected to the first piston and rotationally coupled to the body the first tubular body has a first actuation profile formed in a surface thereof adjacent the opening, the first arm has a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile, 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 (39)
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Specification