GB2209607A - Well logging system employing focused current in measuring resistivity while drilling - Google Patents

Well logging system employing focused current in measuring resistivity while drilling

Info

Publication number
GB2209607A
GB2209607A GB8826341A GB8826341A GB2209607A GB 2209607 A GB2209607 A GB 2209607A GB 8826341 A GB8826341 A GB 8826341A GB 8826341 A GB8826341 A GB 8826341A GB 2209607 A GB2209607 A GB 2209607A
Authority
GB
United Kingdom
Prior art keywords
drilling
current
system employing
well logging
logging system
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.)
Withdrawn
Application number
GB8826341A
Inventor
James Edward Meisner
Roy Earl Squire
Ronald Anthony Hall
Andrew Goodwin Brooks
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
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 Exploration Logging Inc filed Critical Exploration Logging Inc
Publication of GB2209607A publication Critical patent/GB2209607A/en
Withdrawn legal-status Critical Current

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
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
    • G01V3/24—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using ac

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Thermistors And Varistors (AREA)

Abstract

A formation resistivity system is disclosed for use while a drilling operation is occurring. The system contains three electrode bands (51, 53, 55) arranged on an insulating sleeve (47) of a drill string member (25). An electronics package (73) contained in the drill string member includes a drive voltage circuit (90, 94) to provide through a current distribution circuit (64) a focused current to the electrode bands. Formation resistivity data is obtained by a voltage measuring circuit (104) and a current measuring circuit (106) contained in the electronics package. An additional portion (150) of the current measuring circuit is arranged in the insulating sleeve.
GB8826341A 1987-03-16 1988-11-10 Well logging system employing focused current in measuring resistivity while drilling Withdrawn GB2209607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2593787A 1987-03-16 1987-03-16

Publications (1)

Publication Number Publication Date
GB2209607A true GB2209607A (en) 1989-05-17

Family

ID=21828875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8826341A Withdrawn GB2209607A (en) 1987-03-16 1988-11-10 Well logging system employing focused current in measuring resistivity while drilling

Country Status (3)

Country Link
EP (1) EP0310633A4 (en)
GB (1) GB2209607A (en)
WO (1) WO1988007212A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6373254B1 (en) * 1998-06-05 2002-04-16 Schlumberger Technology Corporation Method and apparatus for controlling the effect of contact impedance on a galvanic tool in a logging-while-drilling application
WO2015142352A1 (en) * 2014-03-21 2015-09-24 Halliburton Energy Services, Inc. Electromagnetic formation evaluation tool apparatus and method
US10190412B2 (en) 2016-05-11 2019-01-29 Halliburton Energy Services, Inc. Determining subterranean-formation resistivity using an electromagnetic telemetry system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103626A (en) * 1960-01-12 1963-09-10 Dresser Ind Focus logging system with subsurface transformer sampling means
US3748573A (en) * 1971-06-21 1973-07-24 Shell Oil Co Electrical logging system for use with a drill string
US4494072A (en) * 1980-04-21 1985-01-15 Exploration Logging, Inc. Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string
US4524324A (en) * 1982-02-09 1985-06-18 Dickinson Iii Ben W O Downhole instrument including a flexible probe which can travel freely around bends in a borehole

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103626A (en) * 1960-01-12 1963-09-10 Dresser Ind Focus logging system with subsurface transformer sampling means
US3748573A (en) * 1971-06-21 1973-07-24 Shell Oil Co Electrical logging system for use with a drill string
US4494072A (en) * 1980-04-21 1985-01-15 Exploration Logging, Inc. Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string
US4524324A (en) * 1982-02-09 1985-06-18 Dickinson Iii Ben W O Downhole instrument including a flexible probe which can travel freely around bends in a borehole

Also Published As

Publication number Publication date
EP0310633A4 (en) 1989-06-14
WO1988007212A1 (en) 1988-09-22
EP0310633A1 (en) 1989-04-12

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)