WO2003013215A3 - Filters for canceling multiple noise sources in borehole electromagnetic telemetry system - Google Patents

Filters for canceling multiple noise sources in borehole electromagnetic telemetry system Download PDF

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Publication number
WO2003013215A3
WO2003013215A3 PCT/US2002/025074 US0225074W WO03013215A3 WO 2003013215 A3 WO2003013215 A3 WO 2003013215A3 US 0225074 W US0225074 W US 0225074W WO 03013215 A3 WO03013215 A3 WO 03013215A3
Authority
WO
WIPO (PCT)
Prior art keywords
noise
telemetry system
filters
noise sources
multiple noise
Prior art date
Application number
PCT/US2002/025074
Other languages
French (fr)
Other versions
WO2003013215A2 (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 to AU2002331010A priority Critical patent/AU2002331010B2/en
Priority to BRPI0211730A priority patent/BRPI0211730B1/en
Priority to GB0403376A priority patent/GB2397891B/en
Priority to CA2455186A priority patent/CA2455186C/en
Publication of WO2003013215A2 publication Critical patent/WO2003013215A2/en
Publication of WO2003013215A3 publication Critical patent/WO2003013215A3/en
Priority to NO20040518A priority patent/NO20040518L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G01V11/002—Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/04—Adaptation for subterranean or subaqueous use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611—Means for null steering; Adaptive interference nulling

Abstract

An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters (74) use noise channels (68) as references to remove noise from the signal channel (66). Multiple noise channels are coupled to series connected adaptive filters (74) for removing each noise source from the signal channel. The order of noise removal is selected to remove the most significant first.
PCT/US2002/025074 2001-08-06 2002-08-06 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system WO2003013215A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2002331010A AU2002331010B2 (en) 2001-08-06 2002-08-06 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system
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
GB0403376A GB2397891B (en) 2001-08-06 2002-08-06 Filters for cancelling multiple noise sources in borehole electromagnetic telemetry system
CA2455186A CA2455186C (en) 2001-08-06 2002-08-06 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system
NO20040518A NO20040518L (en) 2001-08-06 2004-02-04 Filters for canceling multiple noise sources in an electromagnetic telemetry system for a borehole.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/923,205 2001-08-06
US09/923,205 US6657597B2 (en) 2001-08-06 2001-08-06 Directional signal and noise sensors for borehole electromagnetic telemetry system

Publications (2)

Publication Number Publication Date
WO2003013215A2 WO2003013215A2 (en) 2003-02-20
WO2003013215A3 true WO2003013215A3 (en) 2003-07-24

Family

ID=25448305

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2002/021891 WO2003014769A1 (en) 2001-08-06 2002-07-03 Directional signal and noise sensors for borehole electromagnetic telemetry system
PCT/US2002/025074 WO2003013215A2 (en) 2001-08-06 2002-08-06 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2002/021891 WO2003014769A1 (en) 2001-08-06 2002-07-03 Directional signal and noise sensors for borehole electromagnetic telemetry system

Country Status (7)

Country Link
US (2) US6657597B2 (en)
AU (2) AU2002355522B2 (en)
BR (2) BRPI0211731B1 (en)
CA (2) CA2456637C (en)
GB (1) GB2398315B (en)
NO (2) NO338862B1 (en)
WO (2) WO2003014769A1 (en)

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Also Published As

Publication number Publication date
AU2002331010B2 (en) 2006-04-13
BR0211731A (en) 2004-09-21
US20040069514A1 (en) 2004-04-15
CA2455186A1 (en) 2003-02-20
US20030025639A1 (en) 2003-02-06
CA2456637C (en) 2009-04-14
US7268696B2 (en) 2007-09-11
NO20040494L (en) 2004-04-01
NO338862B1 (en) 2016-10-24
US6657597B2 (en) 2003-12-02
WO2003013215A2 (en) 2003-02-20
GB2398315B (en) 2005-06-29
BRPI0211731B1 (en) 2020-11-10
AU2002355522B2 (en) 2008-02-07
CA2456637A1 (en) 2003-02-20
WO2003014769A1 (en) 2003-02-20
GB2398315A (en) 2004-08-18
NO20040518L (en) 2004-04-01
GB0403157D0 (en) 2004-03-17
CA2455186C (en) 2010-02-16

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