Electrical resistance tomography from measurements inside a steel cased borehole

Daily, William D; Schenkel, Clifford; Ramirez, Abelardo L

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Title: Electrical resistance tomography from measurements inside a steel cased borehole

Abstract

Electrical resistance tomography (ERT) produced from measurements taken inside a steel cased borehole. A tomographic inversion of electrical resistance measurements made within a steel casing was then made for the purpose of imaging the electrical resistivity distribution in the formation remotely from the borehole. The ERT method involves combining electrical resistance measurements made inside a steel casing of a borehole to determine the electrical resistivity in the formation adjacent to the borehole; and the inversion of electrical resistance measurements made from a borehole not cased with an electrically conducting casing to determine the electrical resistivity distribution remotely from a borehole. It has been demonstrated that by using these combined techniques, highly accurate current injection and voltage measurements, made at appropriate points within the casing, can be tomographically inverted to yield useful information outside the borehole casing.

Inventors:

Daily, William D ^[1]; Schenkel, Clifford ^[2]; Ramirez, Abelardo L ^[3]

Livermore, CA
Walnut Creek, CA
Pleasanton, CA

Issue Date:: 2000-01-01

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

OSTI Identifier:: 873092

Patent Number(s):: 6088655

Assignee:: Regents of University of California (Oakland, CA)

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

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V3/24 - using ac

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: electrical; resistance; tomography; measurements; inside; steel; cased; borehole; produced; tomographic; inversion; casing; purpose; imaging; resistivity; distribution; formation; remotely; method; involves; combining; determine; adjacent; electrically; conducting; demonstrated; combined; techniques; highly; accurate; current; injection; voltage; appropriate; tomographically; inverted; yield; useful; information; outside; steel cased; current injection; involves combining; voltage measurement; method involves; electrically conducting; electrical resistance; electrical resistivity; borehole casing; resistivity distribution; resistance tomography; formation adjacent; voltage measurements; useful information; cased borehole; resistance measurements; resistance measurement; method involve; cased bore; highly accurate; rate current; /702/

Citation Formats


                    Daily, William D, Schenkel, Clifford, and Ramirez, Abelardo L. Electrical resistance tomography from measurements inside a steel cased borehole.  United States: N. p., 2000. 
        Web.

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                    Daily, William D, Schenkel, Clifford, & Ramirez, Abelardo L. Electrical resistance tomography from measurements inside a steel cased borehole.  United States.

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                    Daily, William D, Schenkel, Clifford, and Ramirez, Abelardo L. Sat .  
        "Electrical resistance tomography from measurements inside a steel cased borehole".  United States.  https://www.osti.gov/servlets/purl/873092.

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@article{osti_873092,

  title        = {Electrical resistance tomography from measurements inside a steel cased borehole},

  author       = {Daily, William D and Schenkel, Clifford and Ramirez, Abelardo L},

  abstractNote = {Electrical resistance tomography (ERT) produced from measurements taken inside a steel cased borehole. A tomographic inversion of electrical resistance measurements made within a steel casing was then made for the purpose of imaging the electrical resistivity distribution in the formation remotely from the borehole. The ERT method involves combining electrical resistance measurements made inside a steel casing of a borehole to determine the electrical resistivity in the formation adjacent to the borehole; and the inversion of electrical resistance measurements made from a borehole not cased with an electrically conducting casing to determine the electrical resistivity distribution remotely from a borehole. It has been demonstrated that by using these combined techniques, highly accurate current injection and voltage measurements, made at appropriate points within the casing, can be tomographically inverted to yield useful information outside the borehole casing.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2000},

  month        = {1}

}

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Works referenced in this record:

Cross‐borehole resistivity tomography
journal, August 1991

Daily, William; Owen, Earle
GEOPHYSICS, Vol. 56, Issue 8
https://doi.org/10.1190/1.1443142

Electrical resistivity tomography of vadose water movement
journal, May 1992

Daily, William; Ramirez, Abelardo; LaBrecque, Douglas
Water Resources Research, Vol. 28, Issue 5
https://doi.org/10.1029/91WR03087

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Similar Records

Title: Electrical resistance tomography from measurements inside a steel cased borehole

Abstract

Citation Formats

Cross‐borehole resistivity tomography journal, August 1991

Electrical resistivity tomography of vadose water movement journal, May 1992

Cross‐borehole resistivity tomography
journal, August 1991

Electrical resistivity tomography of vadose water movement
journal, May 1992