System and method for pump noise cancellation in mud pulse...

Details System and method for pump noise cancellation in mud pulse... System and method for pump noise cancellation in mud pulse...

2007-02-14

2009-08-18

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

Reexamination Certificate

active

07577528

ABSTRACT:
Pump noise in a mud-pulse telemetry system is reduced based on analysis of the frequency characteristics of the noise generated by one or more pumps. Least mean-squares filtering may be done. Alternatively, the frequency domain analysis of the pump frequencies is fine-tuned in the time domain and a synthetic timing signal is used for the filtering.

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