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Title: Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present

Abstract

Methods to quantitatively determine the separate amounts of oil and gas in a geological formation adjacent to a cased well using measurements of formation resistivity. The steps include obtaining resistivity measurements from within a cased well of a given formation, obtaining the porosity, obtaining the resistivity of formation water present, computing the combined amounts of oil and gas present using Archie's Equations, determining the relative amounts of oil and gas present from measurements within a cased well, and then quantitatively determining the separate amounts of oil and gas present in the formation. Resistivity measurements are obtained from within the cased well by conducting A.C. current from within the cased well to a remote electrode at a frequency that is within the frequency range of 0.1 Hz to 20 Hz.

Inventors:
 [1]
  1. (Bothell, WA)
Issue Date:
Research Org.:
ParaMagnetic Logging, Inc. (Bothell, WA)
OSTI Identifier:
873428
Patent Number(s):
6157195
Assignee:
Western Atlas International, Inc. (Houston, TX)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
FG06-84ER13294
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
formation; resistivity; measurements; cased; quantitatively; determine; amount; oil; gas; methods; separate; amounts; geological; adjacent; steps; obtaining; porosity; water; computing; combined; archie; equations; determining; relative; obtained; conducting; current; remote; electrode; frequency; range; hz; 20; frequency range; formation resistivity; geological formation; resistivity measurements; formation adjacent; quantitatively determining; quantitatively determine; relative amounts; separate amounts; rate amounts; relative amount; /324/

Citation Formats

Vail, III, William Banning. Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present. United States: N. p., 2000. Web.
Vail, III, William Banning. Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present. United States.
Vail, III, William Banning. Sat . "Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present". United States. https://www.osti.gov/servlets/purl/873428.
@article{osti_873428,
title = {Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present},
author = {Vail, III, William Banning},
abstractNote = {Methods to quantitatively determine the separate amounts of oil and gas in a geological formation adjacent to a cased well using measurements of formation resistivity. The steps include obtaining resistivity measurements from within a cased well of a given formation, obtaining the porosity, obtaining the resistivity of formation water present, computing the combined amounts of oil and gas present using Archie's Equations, determining the relative amounts of oil and gas present from measurements within a cased well, and then quantitatively determining the separate amounts of oil and gas present in the formation. Resistivity measurements are obtained from within the cased well by conducting A.C. current from within the cased well to a remote electrode at a frequency that is within the frequency range of 0.1 Hz to 20 Hz.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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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


New aspects of through‐casing resistivity theory
journal, January 1998


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