Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes

Title: Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes

Abstract

Methods of operation of different types of multiple electrode apparatus vertically disposed in a cased well to measure information related to the resistivity of adjacent geological formations from inside the cased well. The multiple electrode apparatus have a minimum of three spaced apart voltage measurement electrodes that electrically engage the interior of the cased well. Measurement information is obtained related to current which is caused to flow from the cased well into the adjacent geological formation. First compensation information is obtained related to a first casing resistance between a first pair of the spaced apart voltage measurement electrodes. Second compensation information is obtained related to a second casing resistance between a second pair of the spaced apart voltage measurement electrodes. The measurement information, and first and second compensation information are used to determine a magnitude related to the adjacent formation resistivity.

Inventors:

Vail, III, William B. ^[1]

(Bothell, WA)

Issue Date:: 1996-01-01

Research Org.:: ParaMagnetic Logging, Inc. (Bothell, WA)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 870669

Patent Number(s):: 5570024

Assignee:: Paramagnetic Logging, Inc. (Woodinville, WA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V3/24 - using ac
G01V11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00

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DOE Contract Number:: FG06-84ER13294; FG22-88BC14243; FG22-90BC14617; FG22-93BC14966

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: determining; resistivity; formation; adjacent; borehole; casing; multiple; electrodes; resistances; defined; methods; operation; types; electrode; apparatus; vertically; disposed; cased; measure; information; related; geological; formations; inside; minimum; spaced; apart; voltage; measurement; electrically; engage; interior; obtained; current; caused; flow; compensation; resistance; pair; determine; magnitude; multiple electrodes; apart voltage; vertically disposed; voltage measurement; measurement electrodes; geological formations; spaced apart; electrode apparatus; multiple electrode; adjacent geological; formation resistivity; geological formation; formation adjacent; measure information; apparatus vertically; casing resistance; information related; determining resistivity; electrically engage; /324/

Citation Formats


                    Vail, III, William B. Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes.  United States: N. p., 1996. 
        Web.

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                    Vail, III, William B. Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes.  United States.

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                    Vail, III, William B. Mon .  
        "Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes".  United States.  https://www.osti.gov/servlets/purl/870669.

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@article{osti_870669,

  title        = {Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes},

  author       = {Vail, III, William B.},

  abstractNote = {Methods of operation of different types of multiple electrode apparatus vertically disposed in a cased well to measure information related to the resistivity of adjacent geological formations from inside the cased well. The multiple electrode apparatus have a minimum of three spaced apart voltage measurement electrodes that electrically engage the interior of the cased well. Measurement information is obtained related to current which is caused to flow from the cased well into the adjacent geological formation. First compensation information is obtained related to a first casing resistance between a first pair of the spaced apart voltage measurement electrodes. Second compensation information is obtained related to a second casing resistance between a second pair of the spaced apart voltage measurement electrodes. The measurement information, and first and second compensation information are used to determine a magnitude related to the adjacent formation resistivity.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {1}

}

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Works referenced in this record:

Cement Resistivity and Implications for Measurement of Formation Resistivity Through Casing
conference, April 2013

Klein, J. D.; Martin, P. R.; Miller, A. E.
SPE Annual Technical Conference and Exhibition
https://doi.org/10.2118/26453-MS

Through Casing Resistivity Measurements And Their Interpretation For Hydrocarbon Saturations
conference, April 2013

Vail, W. B.; Momii, S. T.; Dewan, J. T.
SPE Annual Technical Conference and Exhibition
https://doi.org/10.2118/30582-MS

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Abstract

Citation Formats

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