1st Edition
A Practical Guide to Borehole Geophysics in Environmental Investigations
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Borehole geophysics is frequently applied in hydrogeological environmental investigations where, for example, sites must be evaluated to determine the distribution of contaminants. It is a cost-effective method for obtaining information during several phases of such investigations.
Written by one of world's leading experts in the field, A Practical Guide to Borehole Geophysics in Environmental Investigations explains the basic principles of the many tools and techniques used in borehole logging projects. Applications are presented in terms of broad project objectives, providing a hands-on guide to geophysical logging programs, including specific examples of how to obtain and interpret data that meet particular hydrogeologic objectives.
Benefits and Limitations of Logging
Logging Equipment
Chapter 2. Environmental Applications of Borehole Geophysics
Site Selection and Design
Verifying Well Construction
Monitoring Contaminant Distribution
Planning Remediation Programs
Chapter 3. Planning an Environmental Logging Program
Selecting the Most Useful Logs Based on Project Goals
How Geology and Hydrology Affect Log Selection
How Well Construction Affects Log Selection
Who Will Do the Logging and Log Analysis
Chapter 4. Log Analysis
Qualitative Analysis
Quantitative Analysis
Synergistic Analysis
Computer Analysis
Borehole Effects
Chapter 5. Log Quality Control
Operation of Logging Equipment
Log Headings
Calibration and Standardization of Logs
ASTM Standard Guide
Chapter 6. Electric Logs
Spontaneous Potential
Single-Point Resistance
Normal Resistivity
Focused Resistivity
Other Multielectrode Methods
Induction
Chapter 7. Nuclear Logs
Gamma
Gamma Spectra
Gamma-Gamma
Neutron
Chapter 8. Acoustic Logs
Acoustic Velocity
Acoustic Waveform
Chapter 9. Borehole-Imaging Logs
Acoustic Televiewer
Borehole Television
Chapter 10. Caliper Logs
What is Measured and How
Applications and Interpretation
Chapter 11. Fluid Logs
Temperature
Conductivity
Flow
Chapter 12. Well-Construction Logs
Casing and Screens
Annular Materials
Cement Bond
Vertical Leakage
Borehole Deviation
Chapter 13. Case Histories
Hardage Site
Idaho National Engineering Laboratory
Cape Cod
Loring Air Force Base
Glossary
References
Index
"…is an excellent guide for environmental project managers considering the use of geophysical logs or managing projects that involve their use. For individuals directly involved in the acquistion or analysis of log data it provides an outstanding foundation for technical growth. In view of the background and experience of the author it is also worthwhile addition to the reference libraries of experienced log analysis."
--Robert W. Taylor, in Groundwater, March-April, 1999, Vol. 37, No. 2:170
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