NL294973A - - Google Patents

Info

Publication number
NL294973A
NL294973A NL294973DA NL294973A NL 294973 A NL294973 A NL 294973A NL 294973D A NL294973D A NL 294973DA NL 294973 A NL294973 A NL 294973A
Authority
NL
Netherlands
Application number
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.)
Publication of NL294973A publication Critical patent/NL294973A/xx
Priority claimed from FR903329A external-priority patent/FR1335569A/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/18—Arrangements for feeding the ink to the nibs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • G01N27/025—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil a current being generated within the material by induction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
    • G01V3/28—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
NL294973D 1946-06-11 NL294973A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2519966X 1946-06-11
FR903329A FR1335569A (fr) 1962-07-07 1962-07-07 Perfectionnements aux appareils de mesure de conductivité par induction

Publications (1)

Publication Number Publication Date
NL294973A true NL294973A (fr)

Family

ID=32232261

Family Applications (2)

Application Number Title Priority Date Filing Date
NL132706D NL132706C (fr) 1946-06-11
NL294973D NL294973A (fr) 1946-06-11

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL132706D NL132706C (fr) 1946-06-11

Country Status (5)

Country Link
US (2) US2519966A (fr)
BE (1) BE633100A (fr)
DE (1) DE1616646B1 (fr)
GB (1) GB1001379A (fr)
NL (2) NL294973A (fr)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH568569A5 (fr) * 1974-02-06 1975-10-31 Bbc Brown Boveri & Cie
US4303879A (en) * 1979-01-29 1981-12-01 Garrett Electronics Metal detector circuit with mode selection and automatic tuning
US4334192A (en) * 1979-01-29 1982-06-08 Garrett Electronics Metal detector circuit having automatic tuning with multiple rates
US4439831A (en) * 1981-06-08 1984-03-27 Schlumberger Technical Corporation Digital induction logging system including autocalibration
US4499422A (en) * 1981-06-08 1985-02-12 Schlumberger Technology Corporation Digital induction logging tool including means for compensating for phase shift errors
GR75678B (fr) * 1981-06-08 1984-08-02 Schlumberger Ltd
US4720681A (en) * 1981-06-08 1988-01-19 Schlumberger Technology Corporation Digital induction logging tool
US4412207A (en) * 1981-06-08 1983-10-25 Schlumberger Technical Corporation Digital induction logging tool including a floating point A/D
US4499421A (en) * 1981-06-08 1985-02-12 Schlumberger Technology Corporation Digital induction logging system including means for generating a plurality of transmitter frequencies
US4455529A (en) * 1981-06-08 1984-06-19 Schlumberger Technology Corporation Digital induction logging tool including means for measuring phase quadrature components in a phase sensitive detector
US4491798A (en) * 1981-12-21 1985-01-01 Palmer James K System for measuring conductivity of a liquid
US4471436A (en) * 1982-01-12 1984-09-11 Schlumberger Technology Corporation Phasor processing of induction logs including shoulder and skin effect correction
US4467425A (en) * 1982-01-12 1984-08-21 Schlumberger Technology Corporation Deconvolution filter for induction log processing
US4513376A (en) * 1982-01-12 1985-04-23 Schlumberger Technology Corporation Phasor processing of induction logs including skin effect correction
US4604581A (en) * 1983-01-11 1986-08-05 Halliburton Company Method and apparatus for deconvolving apparent conductivity measurements in induction well logging
US4825168A (en) * 1986-05-30 1989-04-25 Cobe Laboratories, Inc. Remote conductivity sensor using square wave excitation
GB2191293B (en) * 1986-05-30 1990-10-17 Cobe Lab Remote conductivity sensor
DE3705308A1 (de) * 1987-02-19 1988-09-01 Foerster Inst Dr Friedrich Induktives suchgeraet
DE3707210A1 (de) * 1987-03-06 1988-09-15 Foerster Inst Dr Friedrich Induktives metallsuchgeraet
US4837517A (en) * 1987-07-16 1989-06-06 Schlumberger Technology Corporation Spatial frequency method and apparatus for investigating earth conductivity with high vertical resolution by induction techniques
US5184079A (en) * 1990-11-13 1993-02-02 Schlumberger Technology Corporation Method and apparatus for correcting data developed from a well tool disposed at a dip angle in a wellbore to eliminate the effects of the dip angle on the data
US6216089B1 (en) 1999-09-07 2001-04-10 Schlumberger Technology Corporation Method and apparatus for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool
US6586939B1 (en) * 1999-12-24 2003-07-01 Baker Hughes Incorporated Method and apparatus for reducing the effects of parasitic and galvanic currents in a resistivity measuring tool
US7027922B2 (en) * 2003-08-25 2006-04-11 Baker Hughes Incorporated Deep resistivity transient method for MWD applications using asymptotic filtering
US7652478B2 (en) * 2004-05-07 2010-01-26 Baker Hughes Incorporated Cross-component alignment measurement and calibration
US7205770B2 (en) * 2004-05-07 2007-04-17 Baker Hughes Incorporated Borehole conductivity simulator verification and transverse coil balancing
US7969153B2 (en) * 2004-05-07 2011-06-28 Baker Hughes Incorporated Borehole conductivity simulator verification and transverse antenna balancing
US7932723B2 (en) * 2004-05-07 2011-04-26 Baker Hughes Incorporated Borehole conductivity simulator verification and transverse coil balancing
US7408355B1 (en) * 2004-05-07 2008-08-05 Baker Hughes Incorporated Borehole conductivity simulator verification and transverse coil balancing
US7319331B2 (en) * 2004-05-07 2008-01-15 Baker Hughes Incorporated Two loop calibrator
US7567869B2 (en) * 2007-04-27 2009-07-28 Baker Hughes Incorporated Induction tool for detail evaluation of near borehole zone
US7915895B2 (en) * 2007-06-22 2011-03-29 Baker Hughes Incorporated Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument
DE102008020647A1 (de) * 2008-04-24 2009-11-12 Continental Automotive Gmbh Vorrichtung zum Messen einer Sondenimpedanz
US8718942B2 (en) * 2011-05-06 2014-05-06 Schlumberger Technology Corporation Systems and methods for investigating a formation surrounding a borehole

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123766A (en) * 1964-03-03 Airborne electromagnetic prospecting apparatus having
US668760A (en) * 1900-07-14 1901-02-26 William W Stewart Fountain-pen.
US739720A (en) * 1901-06-22 1903-09-22 Jay G Rider Fountain-pen.
US776428A (en) * 1904-01-29 1904-11-29 Julius L Schnell Feeder-bar for fountain-pens.
US834541A (en) * 1906-01-18 1906-10-30 William A Welty Fountain-pen.
GB104980A (en) * 1916-06-09 1917-03-29 William Irving Ferris Improvements in Fountain Pens.
US1365191A (en) * 1920-01-19 1921-01-11 Richard E Perkins Fountain-pen
DE457043C (de) * 1926-10-21 1928-03-08 Heinrich Koehler Auswechselbarer Tintenleiter fuer Fuellfederhalter
US1818743A (en) * 1929-09-26 1931-08-11 Parker Pen Co Adjustable feed for fountain pens
US2338947A (en) * 1939-05-11 1944-01-11 Kovacs Theodor Fountain pen
US2413904A (en) * 1943-04-17 1947-01-07 Eterpen Sa Financiera Writing instrument
US2582314A (en) * 1949-06-15 1952-01-15 Schlumberger Well Surv Corp Electromagnetic well logging system
US2582315A (en) * 1949-09-03 1952-01-15 Schlumberger Well Surv Corp Differential coil system for induction logging
US2887650A (en) * 1955-05-04 1959-05-19 Newmont Mining Corp Method of and apparatus for geophysical exploration
US2995699A (en) * 1955-08-05 1961-08-08 Mullard Radio Valve Co Ltd Geophysical survey apparatus
US2929984A (en) * 1956-01-12 1960-03-22 Canadian Airborne Geophysics L Method and apparatus for qualitative electromagnetic surveying
US2945176A (en) * 1956-10-02 1960-07-12 Emmett M Irwin Induced flux method and apparatus for testing metals
US2948846A (en) * 1956-11-01 1960-08-09 Schlumberger Well Surv Corp Well logging systems
US2948847A (en) * 1957-05-03 1960-08-09 Welex Inc Electromagnetic conductivity detection
US3105190A (en) * 1959-11-30 1963-09-24 Dresser Ind Induction logging system utilizing surface reciprocal producing means
US3214686A (en) * 1960-09-06 1965-10-26 Newmont Mining Corp Drill hole electromagnetic method and apparatus for geophysical exploration utillizing in-phase and out-of-phase nulling voltages

Also Published As

Publication number Publication date
BE633100A (fr)
US3340464A (en) 1967-09-05
DE1616646B1 (de) 1972-03-16
GB1001379A (en) 1965-08-18
NL132706C (fr)
US2519966A (en) 1950-08-22

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