skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well

Abstract

Methods of operation of different types of multiple electrode apparatus vertically disposed in a cased well to measure information useful to determine the resistivity of adjacent geological formations from within the cased well are described. The multiple electrode apparatus has a plurality of spaced apart voltage measurement electrodes that electrically engage a portion of the interior of the cased well. During measurements of information useful to determine formation resistivity, current is conducted between a first current conducting electrode in electrical contact with the interior of the cased well to a second current conducting electrode that is also in electrical contact with the interior of the cased well. The first and second current conducting electrodes are separated by a distance sufficient so that at least a portion of the current conducted between the first and second current conducting electrodes is conducted through the geological formation of interest.

Inventors:
 [1]
  1. (Bothell, WA)
Issue Date:
Research Org.:
ParaMagnetic Logging, Inc. (Bothell, WA)
OSTI Identifier:
873784
Patent Number(s):
6246240
Assignee:
Western Atlas International, Inc. (Houston, TX)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
FG06-84ER13294
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
determining; resistivity; formation; adjacent; borehole; casing; apparatus; current; conducting; electrodes; cased; methods; operation; types; multiple; electrode; vertically; disposed; measure; information; useful; determine; geological; formations; described; plurality; spaced; apart; voltage; measurement; electrically; engage; portion; interior; measurements; conducted; electrical; contact; separated; distance; sufficient; current conducting; conducting electrode; apart voltage; vertically disposed; voltage measurement; measurement electrodes; geological formations; electrical contact; spaced apart; electrode apparatus; multiple electrode; adjacent geological; formation resistivity; geological formation; formation adjacent; measure information; apparatus vertically; conducting electrodes; information useful; current conducted; determining resistivity; electrically engage; /324/

Citation Formats

Vail, III, William Banning. Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well. United States: N. p., 2001. Web.
Vail, III, William Banning. Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well. United States.
Vail, III, William Banning. Mon . "Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well". United States. https://www.osti.gov/servlets/purl/873784.
@article{osti_873784,
title = {Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well},
author = {Vail, III, William Banning},
abstractNote = {Methods of operation of different types of multiple electrode apparatus vertically disposed in a cased well to measure information useful to determine the resistivity of adjacent geological formations from within the cased well are described. The multiple electrode apparatus has a plurality of spaced apart voltage measurement electrodes that electrically engage a portion of the interior of the cased well. During measurements of information useful to determine formation resistivity, current is conducted between a first current conducting electrode in electrical contact with the interior of the cased well to a second current conducting electrode that is also in electrical contact with the interior of the cased well. The first and second current conducting electrodes are separated by a distance sufficient so that at least a portion of the current conducted between the first and second current conducting electrodes is conducted through the geological formation of interest.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

A transmission‐line model for electrical logging through casing
journal, December 1993


Electrical resistivity measurement through metal casing
journal, July 1994


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


Measurement of Formation Resistivity Through Steel Casing
conference, April 2013


Influence of inductive effect on measurements of resistivity through casing
journal, January 1996


The electrical field in a borehole with a casing
journal, January 1990


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