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Title: Using electrical impedance tomography to map subsurface hydraulic conductivity

Abstract

The use of Electrical Impedance Tomography (EIT) to map subsurface hydraulic conductivity. EIT can be used to map hydraulic conductivity in the subsurface where measurements of both amplitude and phase are made. Hydraulic conductivity depends on at least two parameters: porosity and a length scale parameter. Electrical Resistance Tomography (ERT) measures and maps electrical conductivity (which can be related to porosity) in three dimensions. By introducing phase measurements along with amplitude, the desired additional measurement of a pertinent length scale can be achieved. Hydraulic conductivity controls the ability to flush unwanted fluid contaminants from the surface. Thus inexpensive maps of hydraulic conductivity would improve planning strategies for subsequent remediation efforts. Fluid permeability is also of importance for oil field exploitation and thus detailed knowledge of fluid permeability distribution in three-dimension (3-D) would be a great boon to petroleum reservoir analysts.

Inventors:
 [1];  [2];  [3];  [2]
  1. Danville, CA
  2. Livermore, CA
  3. Pleasanton, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
873377
Patent Number(s):
6147497
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrical; impedance; tomography; map; subsurface; hydraulic; conductivity; measurements; amplitude; phase; depends; parameters; porosity; length; scale; parameter; resistance; measures; maps; related; dimensions; introducing; desired; additional; measurement; pertinent; achieved; controls; ability; flush; unwanted; fluid; contaminants; surface; inexpensive; improve; planning; strategies; subsequent; remediation; efforts; permeability; importance; oil; field; exploitation; detailed; knowledge; distribution; three-dimension; 3-d; boon; petroleum; reservoir; analysts; oil field; hydraulic conductivity; electrical resistance; electrical conductivity; resistance tomography; phase measurement; map subsurface; electrical impedance; subsurface hydraulic; impedance tomography; /324/

Citation Formats

Berryman, James G, Daily, William D, Ramirez, Abelardo L, and Roberts, Jeffery J. Using electrical impedance tomography to map subsurface hydraulic conductivity. United States: N. p., 2000. Web.
Berryman, James G, Daily, William D, Ramirez, Abelardo L, & Roberts, Jeffery J. Using electrical impedance tomography to map subsurface hydraulic conductivity. United States.
Berryman, James G, Daily, William D, Ramirez, Abelardo L, and Roberts, Jeffery J. Sat . "Using electrical impedance tomography to map subsurface hydraulic conductivity". United States. https://www.osti.gov/servlets/purl/873377.
@article{osti_873377,
title = {Using electrical impedance tomography to map subsurface hydraulic conductivity},
author = {Berryman, James G and Daily, William D and Ramirez, Abelardo L and Roberts, Jeffery J},
abstractNote = {The use of Electrical Impedance Tomography (EIT) to map subsurface hydraulic conductivity. EIT can be used to map hydraulic conductivity in the subsurface where measurements of both amplitude and phase are made. Hydraulic conductivity depends on at least two parameters: porosity and a length scale parameter. Electrical Resistance Tomography (ERT) measures and maps electrical conductivity (which can be related to porosity) in three dimensions. By introducing phase measurements along with amplitude, the desired additional measurement of a pertinent length scale can be achieved. Hydraulic conductivity controls the ability to flush unwanted fluid contaminants from the surface. Thus inexpensive maps of hydraulic conductivity would improve planning strategies for subsequent remediation efforts. Fluid permeability is also of importance for oil field exploitation and thus detailed knowledge of fluid permeability distribution in three-dimension (3-D) would be a great boon to petroleum reservoir analysts.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}