Downhole wireless acoustic powering and communications

A method for downhole wireless acoustic powering and communications, the method comprising:

• initialize a downhole circuitry to begin harvesting energy;
• send a first acoustic waves from a wellhead circuitry to the downhole circuitry;
• harvest electrical energy from the first acoustic waves to power one or more sensors;
• query the one or more sensors for sensor data;
• modulate the sensor data into a second acoustic waves;
• send the second acoustic waves from the downhole circuitry to the wellhead circuitry;
• and
• demodulate the second acoustic waves to extract digital data from the one or more sensors.

A system for downhole wireless acoustic powering and communications, the system comprising:

• a well casing;
• a wellhead circuitry, the wellhead circuitry including an acoustic drive circuitry and one or more acoustic transducers;
• a downhole circuitry, the downhole circuitry including an energy harvesting circuitry including one or more energy harvesting transducers and one or more sensors, and a communications circuitry configured for bidirectional communications with the wellhead circuitry;
• the wellhead circuitry configured to:
• generate a first acoustic waves using the acoustic drive circuitry;
• send the first acoustic waves to the downhole circuitry using the one or more acoustic transducers to induce the first acoustic waves onto the well casing;
• receive a second acoustic waves from the downhole circuitry using the well casing as an acoustic waveguide;
• demodulate the second acoustic waves to extract digital data from the second acoustic waves;
• and
• the downhole circuitry configured to:
• harvest electrical energy from the first acoustic waves using the energy harvesting transducers;
• extract sensor data from the one or more sensors;
• modulate the sensor data into the second acoustic waves;
• and
• send the second acoustic waves to the wellhead circuitry using the well casing as the acoustic waveguide.