Active RFID tag arrangements for actuation of downhole equipment in well fluids
First Claim
1. A Radio Frequency Identification (RFID) tag arrangement readable by an RFID tag reader for actuating a downhole tool located in a wellbore, the RFID tag arrangement comprising:
- a non-metallic housing having disposed therein a passive RFID tag, an electrical power source, a pulsed oscillator circuit, and an energizer coil,wherein the electrical power source powers the pulsed oscillator circuit to drive the energizer coil to stimulate and thereby activate the passive RFID tag such that the tag may be read by the RFID tag reader external to the RFID tag arrangement.
8 Assignments
0 Petitions
Accused Products
Abstract
A first RFID tag arrangement for actuating a downhole tool includes a non-metallic housing enclosing a passive RFID tag, power source, pulsed oscillator circuit, and energizer coil. The pulsed oscillator circuit drives the energizer coil to stimulate and activate the tag such that it can be read by an external reader. A second RFID tag arrangement includes a non-metallic housing enclosing a power source, a transmission circuit, and a transmitter coil. The transmission circuit can drive the transmitter coil to transmit a payload stored in the transmission circuit such that the payload is delivered to an external reader. A method of actuating a downhole tool includes placing the tool'"'"'s RFID tag reader in listen only mode, introducing into the wellbore an active RFID tag that transmits its payload to the reader, and optionally configuring the reader to reprogram the tag when it receives the payload therefrom.
8 Citations
18 Claims
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1. A Radio Frequency Identification (RFID) tag arrangement readable by an RFID tag reader for actuating a downhole tool located in a wellbore, the RFID tag arrangement comprising:
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a non-metallic housing having disposed therein a passive RFID tag, an electrical power source, a pulsed oscillator circuit, and an energizer coil, wherein the electrical power source powers the pulsed oscillator circuit to drive the energizer coil to stimulate and thereby activate the passive RFID tag such that the tag may be read by the RFID tag reader external to the RFID tag arrangement. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of actuating a downhole tool designed to be used with a passive Radio Frequency Identification (RFID) tag using an active RFID tag, the method comprising:
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placing an RFID tag reader of the downhole tool in a listen only mode in which the RFID tag reader does not transmit a stimulation signal to a tag; and introducing into the wellbore an active RFID tag that transmits its payload to the RFID tag reader without stimulation by the RFID tag reader, wherein the active RFID tag is an RFID tag arrangement comprising;
a non-metallic housing having disposed therein a passive RFID tag, electrical power source, pulsed oscillator circuit and energizer coil,wherein the electrical power source powers the pulsed oscillator circuit to drive the energizer coil to stimulate and thereby activate the passive RFID tag. - View Dependent Claims (8, 9, 10)
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11. An assembly for use downhole in a wellbore, the assembly comprising:
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a non-metallic housing; an electrical power source disposed in the non-metallic housing; a pulsed oscillator circuit disposed in the non-metallic housing and powered by the electrical power source; an energizer coil disposed in the non-metallic housing and being driven by the pulsed oscillator circuit; and a passive Radio Frequency Identification (RFID) tag disposed in the non-metallic housing and being encoded with a payload, the passive RFID tag being stimulated by the driven energizer coil and transmitting the payload in response thereto. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification