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US 11,634,982 B2Granted
Filtering of RSS pad noise in mud pulse telemetry systems and detection of RSS pad leaks
AssigneeHalliburton Energy Services, Inc.
InventorsLizheng Zhang, Paravastu Badrinarayanan, Malay Mehta, Rashobh Rajan Sobhana, Felipe Costa Oliveira Chagas
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Abstract
Systems and methods for adaptive filtering of RSS pad noise and the detection of RSS pad seal leakage in real-time.
Claims14
A computer-implemented telemetry method, comprising:
- generating a first data-carrying signal which propagates along a wellbore having a drill string therein, wherein the drill string comprises a rotary steerable system (“RSS”) having RSS pads that generate an RSS pad noise signal which also propagates along the wellbore;
- identifying a rotational speed of the RSS;
- identifying a frequency of the RSS pad noise signal from the rotational speed of the RSS pads;
- detecting a second data-carrying signal at a surface computer, the second data-carrying signal being comprised of the first data-carrying signal and the RSS pad noise signal;
- and
- applying an adaptive filter to the second data-carrying signal at the surface computer after the RSS pad noise signal contributes in forming the second data-carrying signal, wherein the adaptive filter is applied in order to:
- filter the RSS pad noise signal from the second data-carrying signal, and
- generate a third data-carrying signal having a reduced RSS pad noise content.
5 more elements
A telemetry system, comprising:
- a drill string comprising a rotary steerable system (“RSS”) having RSS pads that generate an RSS pad noise signal which propagates along a wellbore;
- a telemetry unit which generates a first data-carrying signal that propagates along the wellbore;
- and
- a surface computer that:
- identifies a rotational speed of the RSS,
- identifies a frequency of the RSS pad noise signal from the rotational speed of the RSS pads;
- detects a second data-carrying signal, the second data-carrying signal being comprised of the first data-carrying signal and the RSS pad noise signal;
- and
- applies an adaptive filter to the second data-carrying signal, at the surface computer after the RSS pad noise signal contributes in forming the second data-carrying signal, wherein the adaptive filter is applied in order to:
- filter the RSS pad noise signal, and
- generate a third data-carrying signal having a reduced RSS pad noise content.
8 more elements
Dependencies are inferred from the claim text.