Title:
SYSTEM AND METHOD FOR PUMP NOISE CANCELLATION IN MUD PULSE TELEMETRY
Document Type and Number:
WIPO Patent Application WO2007095153
Kind Code:
B1
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.
Inventors:
RECKMANN HANNO (DE)
LI JIANG (US)
LI JIANG (US)
Application Number:
PCT/US2007/003643
Publication Date:
October 25, 2007
Filing Date:
February 09, 2007
Export Citation:
Assignee:
BAKER HUGHES INC (US)
RECKMANN HANNO (DE)
LI JIANG (US)
RECKMANN HANNO (DE)
LI JIANG (US)
International Classes:
E21B47/18
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