Extendable cutting tools for use in a wellbore
First Claim
1. A tool for use in a wellbore, comprising:
- a tubular body having a central bore therethrough,a piston;
disposed in the central bore, andoperable to activate the tool;
a lock operable to retain the piston in a deactivated position;
a pump disposed in the tubular body and operable to move the piston;
an antenna in communication with the central bore for receiving a first instruction signal from a radio frequency identification (RFID) tag pumped through the central bore;
a pressure sensor in communication with the central bore for receiving a second instruction signal from pressure pulses transmitted through the central bore; and
an electronics package in communication with the antenna and the pressure sensor and having a controller operable to release the lock and operate the pump in response to receiving one of the instruction signals.
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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
20 Claims
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1. A tool for use in a wellbore, comprising:
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a tubular body having a central bore therethrough, a piston; disposed in the central bore, and operable to activate the tool; a lock operable to retain the piston in a deactivated position; a pump disposed in the tubular body and operable to move the piston; an antenna in communication with the central bore for receiving a first instruction signal from a radio frequency identification (RFID) tag pumped through the central bore; a pressure sensor in communication with the central bore for receiving a second instruction signal from pressure pulses transmitted through the central bore; and an electronics package in communication with the antenna and the pressure sensor and having a controller operable to release the lock and operate the pump in response to receiving one of the instruction signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An underreamer for use in a wellbore, comprising
a tubular body; -
a plurality of arms movably attached to the tubular body; cutters disposed along outer surfaces of the arms; an arm piston operable to move the arms relative to the tubular body; an annular control module, comprising; a central bore therethrough; a lock disposed at a periphery of the central bore and operable to retain the arm piston in the retracted position; a pump disposed in the tubular body and operable to move the arm piston; and an electronics package disposed at the periphery of the central bore, in communication with a pressure sensor and the pump, and having a controller operable to release the lock in response to receiving an instruction signal from the pressure sensor; and the pressure sensor in communication with the central bore for receiving the instruction signal from pressure pulses transmitted through the central bore. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A tool for use in a wellbore, comprising:
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a tubular body having a bore extending from a first end to a second end; a piston disposed in the bore; a pump disposed in the tubular body and operable to move the piston; a lock operable to retain the piston in a retracted position; and a controller operable to receive an instruction signal and operable to release the lock and operate the pump in response to receiving the instruction signal.
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Specification