Multiple transducer MWD surface signal processing

Details Multiple transducer MWD surface signal processing Multiple transducer MWD surface signal processing

1998-01-27

1999-10-19

Horabik, Michael

Communications: electrical

Wellbore telemetering or control

Multiplexed signals

34087015, 367 83, 166 651, G01V 300

Patent

active

059696389

ABSTRACT:
A system and method for signal processing are disclosed. One problem in measurement-while-drilling systems including a downhole acoustic transmitter is the presence of uphole generated noise and reflected signals. By proper spacing and timing of multiple transducers and measurements, the present invention filters from the received, corrupted signal the uphole noise and reflected signals. Thus, a more accurate depiction of the transmitted signal is generated uphole.

REFERENCES:
patent: 3488629 (1970-01-01), Claycomb
patent: 3555504 (1971-01-01), Fields
patent: 3716830 (1973-02-01), Garcia
patent: 3742443 (1973-06-01), Foster et al.
patent: 3747059 (1973-07-01), Garcia
patent: 4590593 (1986-05-01), Rodney
patent: 4715022 (1987-12-01), Yeo
patent: 5515336 (1996-05-01), Chin et al.

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