Borehole Methods (M-14)

1. Q: How does it work?
   A: A variety of tools and measurements can be made in a borehole. Acoustic, electrical, radiometric, gravitational and magnetic measurements can be made. There are over 50 types of logs offered commercially and probably ten times that many have been tried.
   

2. Q: What is the geologic model?
   A: Almost any property of earth materials can be estimated by use of borehole methods. The proper method is linked to the geologic problem to be solved.
   

3. Q: What are the requirements?
   A: A borehole or several boreholes completed to the specifications for the technique to be used.
   

4. Q: What are the pitfalls?
   A: Borehole preparation, borehole caliper, calibration of tools, and trained operators are among the fine points of execution to be considered for a successful borehole campaign. Results are valid at the borehole and interpretation is required to interpolate between boreholes.
   

5. Q: What logistics are needed?
   A: Crew size is one person with logging truck and tools. Some portable instruments and winches are available but a rig has to reach the site so driving to the site is usually no problem.
   

6. Q: What are the deliverables?
   A: Deliverables are profiles of the tool response vs. depth along with maps and a narrative discussion of the work performed.
   

7. No additional detail is available on this website at this time.