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

Title: Determining resistivity of a geological formation using circuitry located within a borehole casing

Abstract

Geological formation resistivity is determined. Circuitry is located within the borehole casing that is adjacent to the geological formation. The circuitry can measure one or more voltages across two or more voltage measurement electrodes associated with the borehole casing. The measured voltages are used by a processor to determine the resistivity of the geological formation. A common mode signal can also be reduced using the circuitry.

Inventors:
Issue Date:
Research Org.:
Western Atlas International, Inc., Houston, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175629
Patent Number(s):
6987386
Application Number:
10/286,242
Assignee:
Western Atlas International, Inc.
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:
42 ENGINEERING

Citation Formats

Vail III, William Banning. Determining resistivity of a geological formation using circuitry located within a borehole casing. United States: N. p., 2006. Web.
Vail III, William Banning. Determining resistivity of a geological formation using circuitry located within a borehole casing. United States.
Vail III, William Banning. Tue . "Determining resistivity of a geological formation using circuitry located within a borehole casing". United States. https://www.osti.gov/servlets/purl/1175629.
@article{osti_1175629,
title = {Determining resistivity of a geological formation using circuitry located within a borehole casing},
author = {Vail III, William Banning},
abstractNote = {Geological formation resistivity is determined. Circuitry is located within the borehole casing that is adjacent to the geological formation. The circuitry can measure one or more voltages across two or more voltage measurement electrodes associated with the borehole casing. The measured voltages are used by a processor to determine the resistivity of the geological formation. A common mode signal can also be reduced using the circuitry.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

Cased Hole Formation Resistivity Tool Trial
conference, April 2013


Direct Measurement of Formation Resistivity through Steel Casing solves a North Sea production question
conference, April 2013


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


Utility and Reliability of Cemented Resistivity Arrays in Monitoring Waterflood of the Mansfield Sandstone, Indiana, USA
conference, April 2013


Cased Hole Formation Resistivity Applications in Alaska
conference, April 2013


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


Electrical resistivity measurement through metal casing
journal, July 1994


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 Technology Improves Recovery
journal, May 2001


Cased Hole Formation Resistivity: Changing the Way We Find Oil and Gas
conference, April 2013


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


Field Test Results of a Slim Through Casing Resistivity Array Instrument Prototype
conference, April 2013