Passive attenuation of noise for acoustic telemetry
AssigneeHalliburton Energy Services, Inc.
InventorsDonald Kyle, Michael Linley Fripp, Neal Gregory Skinner
Life of this patent
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Abstract
An acoustic well telemetry system has an acoustic telemetry transducer affixed to an in-well type component and a damper between the transducer and the in-well type component. The damper damps transmission from the in-well type component to the transducer of a specified frequency range. A method includes damping a specified frequency range from transmission from an in-well type component to an acoustic telemetry transducer in a well, and receiving another frequency range outside of the specified frequency range with the transducer.
Claims18
An acoustic well telemetry system, comprising:
- a first acoustic telemetry transducer affixed to an exterior surface of an in-well type component;
- a first damper between the first acoustic telemetry transducer and the exterior surface of the in-well type component to damp transmission from the in-well type component to the first acoustic telemetry transducer of a specified acoustic mode in a first specified frequency, where the specified acoustic mode of the first damper is a communication frequency range of the telemetry system;
- a second acoustic telemetry transducer;
- a second damper between the second acoustic telemetry transducer and the in-well component to damp transmission from the in-well type component to the second acoustic telemetry transducer in a second specified frequency;
- and
- a receiving station communicably coupled to the first acoustic telemetry transducer and the second acoustic telemetry transducer.
A method, comprising:
- damping a specified acoustic mode in a first specified frequency from transmission from an in-well type component to a first acoustic telemetry transducer in a well, where the specified acoustic mode is a communication frequency range of a telemetry system;
- damping another acoustic mode outside of the specified acoustic mode in a second specified frequency with a second acoustic telemetry transducer in the well;
- and
- distinguishing noise from communication based on a signal of the first acoustic telemetry transducer and a signal of the second acoustic transducer by subtracting the signal of the first acoustic telemetry transducer from the signal of the second acoustic telemetry transducer.
An acoustic well telemetry system, comprising:
- a first acoustic telemetry transducer affixed to an exterior surface of an in-well type component;
- a first damper between the first acoustic telemetry transducer and the exterior surface of the in-well type component to damp transmission from the in-well type component to the first acoustic telemetry transducer of a specified acoustic mode in a first specified frequency, where the specified acoustic mode of the first damper is a communication frequency range of the telemetry system;
- a second acoustic telemetry transducer;
- a second damper between the second acoustic telemetry transducer and the in-well type component to damp transmission from the second acoustic telemetry transducer in a second specified frequency;
- and
- a controller communicably coupled to the first acoustic telemetry transducer and the second acoustic telemetry transducer to receive a signal from the first acoustic telemetry transducer and a signal from the second acoustic telemetry transducer.
Dependencies are inferred from the claim text.