Investigating the Sensitivity of Emerging Geophysical Technologies to Immobile Porosity and Isolated DNAPL and Dissolved/Sorbed VOC Mass in Fractured Media
Abstract
The primary objectives of this research were to [1] determine the sensitivity of two emerging borehole geophysical technologies (nuclear magnetic resonance [NMR] and complex resistivity[CR]) to key pore geometric properties (primarily pore size distribution and permeability)controlling contaminant transport, [2] investigate the potential sensitivity of emerging geophysical methods to contaminant mass (as DNAPL and/or aqueous phase) isolated within the immobile porosity of fractured rock inaccessible to aqueous sampling techniques, and [3] to evaluate the predictive capabilities of these geophysical technologies with respect to quantifying immobile porosity and/or contaminant mass concentration. Laboratory and field datasets were acquired on three contaminated sedimentary fractured rock aquifers. Pore geometric parameters (e.g. pore size, permeability) controlling contaminant transport were predicted from the geophysical datasets. Contaminant mass distributions were inferred from analysis of multiple geophysical logs and a procedure for estimating a mass transfer rate coefficient from an electrical geophysical tracer test was demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 12, 2020
- Accession Number
- AD1134915
Entities
People
- Beth L. Parker
- Frederick D. Day-Lewis
- Kristina Keating
- Lee D. Slater
Organizations
- Rutgers University