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US 10,502,854 B2Granted
Real-time adaptive minimum phase wavelet generation for downhole tools
AssigneeHalliburton Energy Services, Inc.
InventorsBatakrishna Mandal, Yinghui Lu
Life of this patent
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Abstract
An example method may include selecting a proposed pulse. A minimum phase wavelet may be generated based, at least in part, on the proposed pulse. A pulse signal within a wellbore may be generated based, at least in part, on the minimum phase wavelet. An echo signal corresponding to the pulse signal from at least a portion of the wellbore may be received, wherein the echo signal is indicative of a wellbore property.
Claims17
A method comprising:
- selecting a proposed pulse;
- generating a minimum phase wavelet, at least in part, by calculating a real cepstrum of the proposed pulse;
- generating a pulse signal within a wellbore based, at least in part, on the minimum phase wavelet;
- and
- receiving an echo signal corresponding to the pulse signal from at least a portion of the wellbore, wherein the echo signal is indicative of a wellbore property.
2 more elements
A method comprising:
- selecting a proposed pulse;
- generating a minimum phase wavelet based, at least in part, on the proposed pulse, wherein a signal energy of the minimum phase wavelet is more concentrated than a signal energy of the proposed pulse;
- generating a pulse signal within a wellbore based, at least in part, on the minimum phase wavelet;
- and
- receiving an echo signal corresponding to the pulse signal reflecting from a wellbore casing, wherein the echo signal is indicative of a characteristic frequency of the wellbore casing;
- selecting a second proposed pulse based, at least in part, on the characteristic frequency of the wellbore casing;
- generating a second minimum phase wavelet based, at least in part, on the second proposed pulse;
- generating a second pulse signal within the wellbore based, at least in part, on the second minimum phase wavelet;
- and
- receiving a second echo signal corresponding to the second pulse signal reflecting from the wellbore casing, wherein the second echo signal is indicative of the characteristic frequency of the wellbore casing.
7 more elements
A system comprising:
- a downhole tool;
- a transducer coupled to the downhole tool;
- and
- a controller communicably coupled to the transducer and configured to
- select a proposed pulse;
- generate a minimum phase wavelet, at least in part, by calculating a real cepstrum of the proposed pulse;
- cause the transducer to generate a pulse signal within a wellbore based, at least in part, on the minimum phase wavelet;
- and
- cause the transducer to receive an echo signal corresponding to the pulse signal from at least a portion of the wellbore, wherein the echo signal is indicative of a wellbore property.
6 more elements
Dependencies are inferred from the claim text.