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Title: Circuit for echo and noise suppression of acoustic signals transmitted through a drill string

Abstract

An electronic circuit for digitally processing analog electrical signals produced by at least one acoustic transducer is presented. In a preferred embodiment of the present invention, a novel digital time delay circuit is utilized which employs an array of First-in-First-out (FiFo) microchips. Also, a bandpass filter is used at the input to this circuit for isolating drill string noise and eliminating high frequency output. 20 figures.

Inventors:
;
Publication Date:
OSTI Identifier:
5236189
Patent Number(s):
US 5274606; A
Application Number:
PPN: US 7-858170
Assignee:
SNL; EDB-94-056665
DOE Contract Number:
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Patent File Date: 24 Mar 1992
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; MWD SYSTEMS; SIGNAL CONDITIONING; ACOUSTIC MEASUREMENTS; DRILLING EQUIPMENT; ELECTRIC FILTERS; NOISE POLLUTION; SIGNAL-TO-NOISE RATIO; EQUIPMENT; FILTERS; POLLUTION; 440400* - Well Logging Instrumentation

Citation Formats

Drumheller, D.S., and Scott, D.D.. Circuit for echo and noise suppression of acoustic signals transmitted through a drill string. United States: N. p., 1993. Web.
Drumheller, D.S., & Scott, D.D.. Circuit for echo and noise suppression of acoustic signals transmitted through a drill string. United States.
Drumheller, D.S., and Scott, D.D.. Tue . "Circuit for echo and noise suppression of acoustic signals transmitted through a drill string". United States. doi:.
@article{osti_5236189,
title = {Circuit for echo and noise suppression of acoustic signals transmitted through a drill string},
author = {Drumheller, D.S. and Scott, D.D.},
abstractNote = {An electronic circuit for digitally processing analog electrical signals produced by at least one acoustic transducer is presented. In a preferred embodiment of the present invention, a novel digital time delay circuit is utilized which employs an array of First-in-First-out (FiFo) microchips. Also, a bandpass filter is used at the input to this circuit for isolating drill string noise and eliminating high frequency output. 20 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 28 00:00:00 EST 1993},
month = {Tue Dec 28 00:00:00 EST 1993}
}