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US 12,404,726 B2Granted
Distributed sensing with tubing encased conductors (TEC)
AssigneeHalliburton Energy Services, Inc.
InventorsMichael Linley Fripp, Joachim Pihl, Joseph Chakkungal Joseph
Life of this patent
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Abstract
A method comprising transmitting, by an electric conductor disposed in a wellbore, a time-varying electric signal to a first reflector wirelessly coupled to the electric conductor and a sensor, wherein the sensor is wirelessly coupled to the electric conductor via the first reflector, receiving a first reflected signal from the first reflector, analyzing the first reflected signal to determine a sensor value for the sensor, and determining, based on the sensor value, one or more downhole parameters.
Claims20
A method comprising:
- transmitting, by an electrical conductor disposed in a wellbore, a time-varying electric signal to a first reflector wirelessly coupled to the electrical conductor and a sensor, wherein the sensor is wirelessly coupled to the electrical conductor via the first reflector, and wherein the electric conductor comprises a tubed-encased conductor (TEC) including an insulated wire that is enclosed in a metal tube and that carries the time-varying electric signal;
- receiving a first reflected signal from the first reflector;
- determining a frequency shift of the first reflected signal to calculate a sensor value for the sensor;
- and
- determining, based on the sensor value, one or more downhole parameters.
2 more elements
A method comprising:
- transmitting, by an electrical conductor disposed in a wellbore, an electric signal to a plurality of reflectors wirelessly coupled to the electrical conductor, and wherein the electric conductor comprises a tubed-encased conductor (TEC) including an insulated wire that is enclosed in a metal tube and that carries the time-varying electric signal;
- receiving one or more reflected signals from the reflectors;
- analyzing the one or more reflected signals to determine a frequency shift of the reflected signals;
- and
- determining, based on the frequency shift, one or more downhole parameters.
2 more elements
A system comprising:
- an electric conductor disposed in a wellbore and configured to transmit a time-varying electric signal, and wherein the electric conductor comprises a tubed-encased conductor (TEC) including an insulated wire that is enclosed in a metal tube and that carries the time-varying electric signal;
- a first reflector wirelessly coupled to the electric conductor and configured to receive the time-varying electrical signal;
- a sensor wirelessly coupled to the electric conductor via the first reflector;
- a transceiver coupled to the electric conductor and configured to receive a first reflected signal from the first reflector;
- and
- a processor coupled to the transceiver and configured to:
- determine a frequency shift of the first reflected signal to calculate a sensor value for the sensor;
- and
- determine, based on the sensor value, one or more downhole parameters.
6 more elements
Dependencies are inferred from the claim text.