OUTLINE FOR WORKSHOP ON GEOPHYSICAL AND HYDROPHYSICAL METHODS FORENVIRONMENTAL AND GEOTECHNICAL APPLICATIONS)
INTRODUCTION
Workshop Instructors
Discussion of Course Materials
Manual and Keyes CRC handbook.
Brief history of geophysical logging
What is geophysical and hydrophysical logging and why do we need to do it?
Log Selection Chart
Log Selection Criteria and References
Basic Geophysical Equations
DISCUSSION OF BASIC EQUIPMENT
Review of presently available equipment, suitcase loggers, and field demonstration
GEOPHYSICAL METHODS
Caliper
Gamma
Resistivity
Neutron
Density
Sonic
Imaging (Acoustic, Optical, and Electrical)
Deliverables – types of data presentations, requirements
EXAMPLES OF GEOPHYSICAL METHODS
Gamma
Depth adjustment “Pick up”, sensor offsets and rat holes
Electric logs versus Gamma
Induction and Gamma in cased holes
Multiple logs (“Montage”) Gamma and statistics
Log correlation
Image log applications
HYDROPHYSICAL/HYDROLOGIC METHODS
USGS Heat Pulse Flow Meter (HPFM)
Electromagnetic Flow Meter (EMFM)
Colloidal Borescope flow meter (CBFM)
Packer with Differential Pressure (PdP)
Spinner Flow Meter
Hydrophysical Logging (HPL)
EXAMPLES OF HYDROPHYSICAL/HYDROLOGICAL METHODS
Simple HPFM and EMFMHPFM interpretation
HPFM versus Spinner
Integrated HPFM with Image logs
Hydrophysical logging examples
Compare Hydrophysical Logging and HPFM results
HYDRAULIC TEST EQUIPMENT AND METHODS
Straddle packer Testing Equipment Overview
Methods to Quantify Hydraulic Conductivity from Hydrologic Methods
COMPARISON OF HYDRAULIC TEST RESULTS AND HYDROPHYSICAL METHODS
Comparison of Geophysical/Hydrophysical Results to Packer Testing
GRAND INTEGRATION
Example of integrating geophysical, hydraulics, aquifer tests and surface geophysics.
QA/QC SUMMARY
Tool Specific Issues
Tool calibrations and confirming proper tool operation
Problems and Pitfalls
Collecting Legally Defensible Data
OVERVIEW/CONCLUDING REMARKS
Summary Exam