BR0211730A - Apparatus for removing noise generated by multiple sources from a signal received in a borehole electromagnetic telemetry system, and apparatus for improving the signal / noise ratio of a signal channel in a borehole electromagnetic telemetry system operating in the presence of a plurality of noise sources - Google Patents

Apparatus for removing noise generated by multiple sources from a signal received in a borehole electromagnetic telemetry system, and apparatus for improving the signal / noise ratio of a signal channel in a borehole electromagnetic telemetry system operating in the presence of a plurality of noise sources

Info

Publication number
BR0211730A
BR0211730A BR0211730-4A BR0211730A BR0211730A BR 0211730 A BR0211730 A BR 0211730A BR 0211730 A BR0211730 A BR 0211730A BR 0211730 A BR0211730 A BR 0211730A
Authority
BR
Brazil
Prior art keywords
noise
signal
telemetry system
electromagnetic telemetry
sources
Prior art date
Application number
BR0211730-4A
Other languages
Portuguese (pt)
Other versions
BRPI0211730B1 (en
Inventor
Wallace Gardner
Paul Rodney
Harrison Smith
Original Assignee
Halliburton Energy Serv Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Halliburton Energy Serv Inc filed Critical Halliburton Energy Serv Inc
Priority claimed from PCT/US2002/025074 external-priority patent/WO2003013215A2/en
Publication of BR0211730A publication Critical patent/BR0211730A/en
Publication of BRPI0211730B1 publication Critical patent/BRPI0211730B1/en

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Noise Elimination (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

"APARELHO PARA REMOVER RUìDO GERADO POR MúLTIPLAS FONTES DE UM SINAL RECEBIDO EM UM SISTEMA DE TELEMETRIA ELETROMAGNéTICO DE FURO DE SONDAGEM, E, APARELHO PARA MELHORAR A RELAçãO SINAL/RUìDO DE UM CANAL DE SINAL EM UM SISTEMA DE TELEMETRIA ELETROMAGNéTICO DE FURO DE SONDAGEM QUE OPERA NA PRESENçA DE UMA PLURALIDADE DE FONTES DE RUìDO". Um sistema de telemetria de furo de sondagem eletromagnético que fornece melhor relação sinal/ruido. Filtros adaptativos usam canais de ruído como referências para remover ruído do canal de sinal. Múltiplos canais de ruído são acoplados a filtros adaptativos conectados em série para remover cada fonte de ruído do canal de sinal. A ordem de remoção de ruído é selecionada de forma a remover o mais significativo primeiro."APPARATUS FOR REMOVING NOISE GENERATED BY MULTIPLE SOURCES RECEIVED IN AN ELECTROMAGNETIC TUNING TELEMETRY SYSTEM, AND APPARATUS FOR IMPROVING SIGNAL / NOISE CHANNEL RELATIONSHIP IN AN ELEMETING TELEMETING TONE SYSTEM OPERATES IN THE PRESENCE OF A PLURALITY OF NOISE SOURCES ". An electromagnetic borehole telemetry system that provides better signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Multiple noise channels are coupled to series-connected adaptive filters to remove each noise source from the signal channel. The noise removal order is selected to remove the most significant first.

BRPI0211730A 2001-08-06 2002-08-06 system for removing noise generated by a plurality of noise sources from a signal received in a borehole electromagnetic telemetry system BRPI0211730B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62320501A 2001-08-06 2001-08-06
PCT/US2002/025074 WO2003013215A2 (en) 2001-08-06 2002-08-06 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system

Publications (2)

Publication Number Publication Date
BR0211730A true BR0211730A (en) 2004-12-28
BRPI0211730B1 BRPI0211730B1 (en) 2015-12-01

Family

ID=33565187

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0211730A BRPI0211730B1 (en) 2001-08-06 2002-08-06 system for removing noise generated by a plurality of noise sources from a signal received in a borehole electromagnetic telemetry system

Country Status (1)

Country Link
BR (1) BRPI0211730B1 (en)

Also Published As

Publication number Publication date
BRPI0211730B1 (en) 2015-12-01

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

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