skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: First field test of NAPL detection with high resolution borehole seismic imaging

Abstract

The purpose of this field test is to evaluate the detectability of NAPLs by high resolution tomographic borehole seismic imaging. The site is a former Department of Energy (DOE) manufacturing facility in Pinellas County, Florida. Cross-hole seismic and radar measurements were made in a shallow aquifer contaminated with non-aqueous phase liquids (NAPLs). Cone penetration test (CPT) and induction logging were performed for lithology and conductivity, respectively. The main challenge is to distinguish fluid phase heterogeneities from anomalies arising from geologic structure. Our approach is to compare measurements between locations of known contamination with a nearby uncontaminated location of similar lithology where differences in signal transmission may be attributed to fluid phase changes. The CPT data show similar lithologic structure at the locations both within and outside the NAPL-contaminated area. Zones of low seismic amplitude at about 7 m depth appear more extensive in the NAPL-contaminated area. These zones may be the result of fluid phase heterogeneities (NAPL or gas), or they may be due to the lithology, i.e. attenuating nature of the layer itself, or the transition between two distinct layers. The presence of lithologic contrasts, specifically from higher permeability sands to lower permeability silts and clays, also indicate potentialmore » locations of NAPL, as they could be flow barriers to downward NAPL migration.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Environmental Management. Office of Science and Technology (US)
OSTI Identifier:
797864
Report Number(s):
LBNL-50689
R&D Project: G40401; B& R EW4010000; TRN: US200216%%165
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: 9th Biennial International Conference on Nuclear and Hazardous Waste Management, Reno, NV (US), 08/04/2002--08/08/2002; Other Information: PBD: 1 May 2002
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; BOREHOLES; DETECTION; FIELD TESTS; GEOLOGIC STRUCTURES; LITHOLOGY; PERMEABILITY; RESOLUTION; WASTE MANAGEMENT

Citation Formats

Geller, Jil T., Peterson, John E., Williams, Kenneth H., Ajo-Franklin, Jonathan B., and Majer, Ernest L. First field test of NAPL detection with high resolution borehole seismic imaging. United States: N. p., 2002. Web.
Geller, Jil T., Peterson, John E., Williams, Kenneth H., Ajo-Franklin, Jonathan B., & Majer, Ernest L. First field test of NAPL detection with high resolution borehole seismic imaging. United States.
Geller, Jil T., Peterson, John E., Williams, Kenneth H., Ajo-Franklin, Jonathan B., and Majer, Ernest L. Wed . "First field test of NAPL detection with high resolution borehole seismic imaging". United States. https://www.osti.gov/servlets/purl/797864.
@article{osti_797864,
title = {First field test of NAPL detection with high resolution borehole seismic imaging},
author = {Geller, Jil T. and Peterson, John E. and Williams, Kenneth H. and Ajo-Franklin, Jonathan B. and Majer, Ernest L.},
abstractNote = {The purpose of this field test is to evaluate the detectability of NAPLs by high resolution tomographic borehole seismic imaging. The site is a former Department of Energy (DOE) manufacturing facility in Pinellas County, Florida. Cross-hole seismic and radar measurements were made in a shallow aquifer contaminated with non-aqueous phase liquids (NAPLs). Cone penetration test (CPT) and induction logging were performed for lithology and conductivity, respectively. The main challenge is to distinguish fluid phase heterogeneities from anomalies arising from geologic structure. Our approach is to compare measurements between locations of known contamination with a nearby uncontaminated location of similar lithology where differences in signal transmission may be attributed to fluid phase changes. The CPT data show similar lithologic structure at the locations both within and outside the NAPL-contaminated area. Zones of low seismic amplitude at about 7 m depth appear more extensive in the NAPL-contaminated area. These zones may be the result of fluid phase heterogeneities (NAPL or gas), or they may be due to the lithology, i.e. attenuating nature of the layer itself, or the transition between two distinct layers. The presence of lithologic contrasts, specifically from higher permeability sands to lower permeability silts and clays, also indicate potential locations of NAPL, as they could be flow barriers to downward NAPL migration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {5}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: