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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)
Publication Date:
Research Org.:
ParaMagnetic Logging, Inc. (Bothell, WA)
OSTI Identifier:
873428
Patent Number(s):
US 6157195
Assignee:
Western Atlas International, Inc. (Houston, TX)
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}
}

Patent:

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