Signal thresholding apparatus, systems, and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJ. Woerpel, Bruce Cornish
Life of this patent
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Abstract
In some embodiments, an apparatus and a system, as well as a method and an article, may include selecting a plurality of signal thresholds comprising a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and a root-mean-square amplitude of the acoustic borehole signal, to N. Applying the plurality of signal thresholds to the acoustic borehole signal to determine a corresponding plurality of peak amplitudes and signal travel times for selected ones of the plurality of signal thresholds may also be included.
Claims42
An apparatus, comprising:
- a receiver to receive an acoustic borehole signal;
- a processor to couple to the receiver;
- and
- a module comprising instructions to direct the processor to select a plurality of signal thresholds comprising a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and a root-mean-square amplitude of the acoustic borehole signal, to N, and to apply the plurality of signal thresholds to the acoustic borehole signal to determine a corresponding plurality of peak amplitudes and signal travel times for selected ones of the plurality of signal thresholds.
A system, comprising:
- a housing selected from one of a drill collar, a downhole tool, or a tool body;
- and
- a receiver to receive an acoustic borehole signal;
- a processor included in the housing to couple to the receiver;
- and
- a module comprising instructions to direct the processor to select a plurality of signal thresholds comprising a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and a root-mean-square amplitude of the acoustic borehole signal, to N, and to apply the plurality of signal thresholds to the acoustic borehole signal to determine a corresponding plurality of peak amplitudes and signal travel times for selected ones of the plurality of signal thresholds.
A method, comprising:
- selecting a plurality of signal thresholds comprising a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and a root-mean-square amplitude of the acoustic borehole signal, to N;
- and
- applying the plurality of signal thresholds to the acoustic borehole signal to determine a corresponding plurality of peak amplitudes and signal travel times for selected ones of the plurality of signal thresholds.
An article including a machine-accessible medium having associated information, wherein the information, when accessed, results in a machine performing:
- selecting a plurality of signal thresholds comprising a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and a root-mean-square amplitude of the acoustic borehole signal, to N;
- and
- applying the plurality of signal thresholds to the acoustic borehole signal to determine a corresponding plurality of peak amplitudes and signal travel times for selected ones of the plurality of signal thresholds.
Dependencies are inferred from the claim text.