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:
- Issue Date:
- OSTI Identifier:
- 5236189
- Patent Number(s):
- 5274606
- 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.
@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 = {1993},
month = {12}
}
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