WO2007055786A3 - Ombi tool with guarded electrode current measurement - Google Patents

Ombi tool with guarded electrode current measurement Download PDF

Info

Publication number
WO2007055786A3
WO2007055786A3 PCT/US2006/034737 US2006034737W WO2007055786A3 WO 2007055786 A3 WO2007055786 A3 WO 2007055786A3 US 2006034737 W US2006034737 W US 2006034737W WO 2007055786 A3 WO2007055786 A3 WO 2007055786A3
Authority
WO
WIPO (PCT)
Prior art keywords
current
borehole wall
ombi
tool
electrode current
Prior art date
Application number
PCT/US2006/034737
Other languages
French (fr)
Other versions
WO2007055786A2 (en
Inventor
Myrick L Monroe
Marian L Morys
Carl Dodge
Original Assignee
Halliburton Energy Serv Inc
Myrick L Monroe
Marian L Morys
Carl Dodge
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, Myrick L Monroe, Marian L Morys, Carl Dodge filed Critical Halliburton Energy Serv Inc
Publication of WO2007055786A2 publication Critical patent/WO2007055786A2/en
Publication of WO2007055786A3 publication Critical patent/WO2007055786A3/en

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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

An apparatus and method for guarding the current injection sources of downhole logging tools utilized to determine the resistivity of an adjacent portion of a borehole wall. Two current electrodes are energized to create an oscillatory electric field in a borehole wall. The two current electrodes are each shielded with a conductive shield, maintained at the same electric potential as the current electrode, to prevent current leakage into the logging tool body. A current sensor is coupled between each current electrode and conductive shield to measure the actual current flow injected into the borehole wall from the current electrode and to compensate for current leakage. A voltage detector measures the differential voltage created by the electric field in the borehole wall, and the differential voltage is used in combination with the measured current flow to determine a resistivity value for the borehole wall.
PCT/US2006/034737 2005-11-04 2006-09-07 Ombi tool with guarded electrode current measurement WO2007055786A2 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
US73376105P 2005-11-04 2005-11-04
US60/733,761 2005-11-04
US73484605P 2005-11-09 2005-11-09
US73510705P 2005-11-09 2005-11-09
US73491705P 2005-11-09 2005-11-09
US60/734,917 2005-11-09
US60/734,846 2005-11-09
US60/735,107 2005-11-09
US73610505P 2005-11-10 2005-11-10
US60/736,105 2005-11-10
US42189506A 2006-06-02 2006-06-02
US11/421,895 2006-06-02

Publications (2)

Publication Number Publication Date
WO2007055786A2 WO2007055786A2 (en) 2007-05-18
WO2007055786A3 true WO2007055786A3 (en) 2007-12-13

Family

ID=38023738

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/034737 WO2007055786A2 (en) 2005-11-04 2006-09-07 Ombi tool with guarded electrode current measurement

Country Status (1)

Country Link
WO (1) WO2007055786A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7701229B2 (en) 2007-10-15 2010-04-20 Halliburton Energy Services, Inc. Methods and systems for measurement of fluid electrical stability
US8129994B2 (en) * 2009-10-19 2012-03-06 Smith International Inc Microresistivity imaging in conductive and nonconductive drilling fluid
GB2590442B (en) * 2019-12-18 2022-06-08 Qinetiq Ltd Imaging system
CN111364967A (en) * 2020-03-24 2020-07-03 中国海洋石油集团有限公司 Electric imaging measurement method and electric imaging logging instrument
US11035974B1 (en) 2020-05-13 2021-06-15 Baker Hughes Oilfield Operations Llc Downhole resistivity imaging pad with electrical leakage prevention

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030038634A1 (en) * 2001-08-23 2003-02-27 Kurt-Martin Strack Integrated borehole system for reservoir detection and monitoring
US20030173968A1 (en) * 2000-04-07 2003-09-18 Philip Cheung Method and apparatus for investigating the wall of a borehole

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030173968A1 (en) * 2000-04-07 2003-09-18 Philip Cheung Method and apparatus for investigating the wall of a borehole
US20030038634A1 (en) * 2001-08-23 2003-02-27 Kurt-Martin Strack Integrated borehole system for reservoir detection and monitoring

Also Published As

Publication number Publication date
WO2007055786A2 (en) 2007-05-18

Similar Documents

Publication Publication Date Title
MX2009012584A (en) High resolution voltage sensing array.
WO2007055790A3 (en) Displaced electrode amplifier
WO2007055787A3 (en) Oil based mud imaging tool with common mode voltage compensation
MXPA05004491A (en) Formation imaging while drilling in non-conductive fluids.
CA2147790A1 (en) Method and apparatus for measuring formation resistivity in cased holes
MXPA06000133A (en) Method and apparatus for imaging earth formation.
RU2004133554A (en) PHASE DISTRIBUTION BY MICROELECTRIC MEASUREMENT IN A NON-CONDUCTIVE LIQUID
GB2441260A (en) Permittivity measurements with oil-based mud imaging tool
WO2007055786A3 (en) Ombi tool with guarded electrode current measurement
GB2379511A (en) Multi-depth focused resistivity imaging tool for logging while drilling applications
NO20024771L (en) Logging probe for electrical investigation of geological formations through which a borehole passes
GB2381874A (en) Method and apparatus for investigating the wall of a borehole
BR112012009092A2 (en) micro-resistance profiling tool during drilling, and method for micro-resistance profiling during drilling in an underground well
EA200800335A1 (en) METHOD OF ELECTRIC FLOORING OF EXTERNAL WELLS
RU2012120701A (en) CONSTRUCTION OF IMAGES OF SPECIFIC MICRO-RESISTANCE AT NUMEROUS DEPTHS OF RESEARCH
MX2015017038A (en) Improved array laterolog tool techniques.
GB2497499A (en) Improved pad device for resistivity imaging in the wells with oil based drilling fluid
MX2010005058A (en) Automated electrical stability meter.
EA200200067A1 (en) METHOD AND DEVICE FOR DETERMINING SPECIFIC RESISTANCE OF FORMATION THROUGH A SURFACE WELL
RU2012145847A (en) METHODS AND SYSTEMS FOR DETERMINING THE GAP BETWEEN A WELL DEVICE AND A GEOLOGICAL FORMATION
AU4557400A (en) A method and apparatus for determining the resistivity of a formation through which a cased well passes
MXPA00012441A (en) Method of monitoring the diameter of columns made by injection.
GB2497242A (en) Apparatus and method for capacitive measuring of sensor standoff in boreholes filled with oil based drilling fluid
CN104898169A (en) Induced polarization deep prospecting method
RU2010100112A (en) METHOD FOR CONTROLING THE SECOND BORE DRILLING TRAJECTORY WITH ITS WALKING NEAR THE FIRST WELL (OPTIONS)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC - FORM 1205A - 12.08.2008

122 Ep: pct application non-entry in european phase

Ref document number: 06803055

Country of ref document: EP

Kind code of ref document: A2