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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:
Publication Date:
Research Org.:
Western Atlas International, Inc., Houston, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175629
Patent Number(s):
6,987,386
Application Number:
10/286,242
Assignee:
Western Atlas International, Inc.
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:

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