AU2124683A - Noise subtraction filter - Google Patents

Noise subtraction filter

Info

Publication number
AU2124683A
AU2124683A AU21246/83A AU2124683A AU2124683A AU 2124683 A AU2124683 A AU 2124683A AU 21246/83 A AU21246/83 A AU 21246/83A AU 2124683 A AU2124683 A AU 2124683A AU 2124683 A AU2124683 A AU 2124683A
Authority
AU
Australia
Prior art keywords
noise subtraction
subtraction filter
filter
noise
subtraction
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
AU21246/83A
Other versions
AU555850B2 (en
Inventor
T. Umeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Oilfield Operations LLC
Original Assignee
Explor Logging Inc
Exploration Logging 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 Explor Logging Inc, Exploration Logging Inc filed Critical Explor Logging Inc
Publication of AU2124683A publication Critical patent/AU2124683A/en
Application granted granted Critical
Publication of AU555850B2 publication Critical patent/AU555850B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B47/14—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 using acoustic waves
    • E21B47/18—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/30—Noise handling
    • G01V2210/32—Noise reduction
    • G01V2210/324—Filtering

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Transplanting Machines (AREA)
  • Filters And Equalizers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Inorganic Insulating Materials (AREA)
AU21246/83A 1983-09-26 1983-09-26 Noise subtraction filter Ceased AU555850B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1983/001494 WO1985001586A1 (en) 1983-09-26 1983-09-26 Noise subtraction filter

Publications (2)

Publication Number Publication Date
AU2124683A true AU2124683A (en) 1985-04-23
AU555850B2 AU555850B2 (en) 1986-10-09

Family

ID=22175458

Family Applications (1)

Application Number Title Priority Date Filing Date
AU21246/83A Ceased AU555850B2 (en) 1983-09-26 1983-09-26 Noise subtraction filter

Country Status (4)

Country Link
EP (1) EP0159314A4 (en)
AU (1) AU555850B2 (en)
NO (1) NO852096L (en)
WO (1) WO1985001586A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU633673B2 (en) * 1990-01-18 1993-02-04 Matsushita Electric Industrial Co., Ltd. Signal processing device
WO1997026559A1 (en) * 1996-01-16 1997-07-24 Mobil Oil Corporation Method for removing borehole rugosity noise from well log data
US7251566B2 (en) 2005-03-31 2007-07-31 Schlumberger Technology Corporation Pump off measurements for quality control and wellbore stability prediction
EP3035083B1 (en) * 2014-12-17 2021-09-29 Services Pétroliers Schlumberger System and method for removing noise from acoustic impedance logs

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484591A (en) * 1966-07-18 1969-12-16 Hewlett Packard Co Extended bandwidth signal-to-noise ratio enhancement methods and means
US3714590A (en) * 1971-11-08 1973-01-30 Amoco Prod Co Averaging circuit
US4025724A (en) * 1975-08-12 1977-05-24 Westinghouse Electric Corporation Noise cancellation apparatus
DE2605485B2 (en) * 1976-02-12 1980-05-29 Carl Schenck Ag, 6100 Darmstadt Method for the relative setting of the axes of rotation of workpieces to be machined in series in a centering machine
US4193118A (en) * 1978-07-18 1980-03-11 Motorola, Inc. Low pass digital averaging filter
US4357673A (en) * 1980-04-18 1982-11-02 Hewlett-Packard Company Apparatus for performing measurements and error analysis of the measurements
CA1189442A (en) * 1981-11-09 1985-06-25 Gary D. Berkenkamp Pump noise filtering apparatus for a borehole measurement while drilling system utilizing drilling fluid pressure sensing

Also Published As

Publication number Publication date
EP0159314A1 (en) 1985-10-30
WO1985001586A1 (en) 1985-04-11
NO852096L (en) 1985-05-24
EP0159314A4 (en) 1986-07-23
AU555850B2 (en) 1986-10-09

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