Electromagnetic telemetry device
First Claim
Patent Images
1. An electromagnetic (EM) telemetry system comprising an EM telemetry device and a receiver, the EM telemetry device capable of transmitting a pulsed high power EM telemetry signal that has a peak or average pulse power of about 20 W to about 2000 W;
- the receiver comprising an antenna, a detector, and a decoder;
the antenna comprising a first electrode and a second electrode and configured to generate an antenna signal current and an antenna signal voltage in response to the EM telemetry signal;
the detector is configured to detect at least one of the antenna signal current and the antenna signal voltage; and
the decoder is configured to decode data encoded in the EM telemetry signal at a bit rate of at least one (1) bit per second (bps).
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Abstract
In one aspect, an electromagnetic (EM) telemetry device is disclosed including an EM telemetry circuit capable of transmitting a pulsed high power EM telemetry signal, wherein the high power EM telemetry signal has a peak or average pulse power of about 20 W to about 2000 W.
244 Citations
20 Claims
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1. An electromagnetic (EM) telemetry system comprising an EM telemetry device and a receiver, the EM telemetry device capable of transmitting a pulsed high power EM telemetry signal that has a peak or average pulse power of about 20 W to about 2000 W;
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the receiver comprising an antenna, a detector, and a decoder; the antenna comprising a first electrode and a second electrode and configured to generate an antenna signal current and an antenna signal voltage in response to the EM telemetry signal; the detector is configured to detect at least one of the antenna signal current and the antenna signal voltage; and the decoder is configured to decode data encoded in the EM telemetry signal at a bit rate of at least one (1) bit per second (bps). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electromagnetic (EM) telemetry system comprising an EM telemetry device and a receiver:
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the EM telemetry device capable of transmitting a pulsed EM telemetry signal that has a peak or average pulse power of between 20 W to 2000 W; the receiver comprising an antenna, a detector and a decoder; wherein the antenna is configured to generate a current and a voltage in response to the EM telemetry signal; the detector is configured to detect at least one of the current and the voltage from the antenna and generate a corresponding detector signal; and the decoder is configured to decode the corresponding detector signal at a bit rate of at least one (1) bit per second (bps).
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20. A method for receiving data from downhole, the method comprising:
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selecting an electromagnetic (EM) telemetry system comprising an EM telemetry device and a receiver, wherein the EM telemetry device has been disposed downhole; and using the EM telemetry device, transmitting the data to the receiver; wherein the EM telemetry device is capable of transmitting a pulsed EM telemetry signal that has a peak or average pulse power of between 20 W to 2000 W; and wherein the receiver comprises an antenna, a detector, and a decoder; and
the antenna is configured to generate a current and a voltage in response to the EM telemetry signal; and
the detector is configured to detect at least one of the current and the voltage from the antenna and generate a corresponding detector signal; and
the decoder is configured to decode the corresponding detector signal at a bit rate of at least one (1) bit per second (bps).
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Specification