Borehole geophysics is, and will continue to be, a highly effective tool for water resource/water supply applications and is frequently applied in environmental investigations where, for example, sites must be evaluated to determine the distribution of contaminants. This course will provide the basic applications of borehole geophysics for designing and completing water production wells, assessing environmental concerns, conducting basin and hydrostratigraphic analysis, and rehabilitating or abandoning water production wells. The course will provide basic principles of log quality control.
In addition, this course will demonstrate some of these important applications of borehole geophysics which include identifying water producing zones in well boreholes; evaluating the thickness, distribution, and transmissive quality of granular, fractured, and karst aquifers; identifying fractures; evaluating relative water yield and water quality; planning well systems; and planning and evaluating well workovers/rehabilitation and abandonment.
Furthermore, this course will also provide basic information on the various types of borehole geophysical logs (including new developments) and their uses, log quality/validation issues, and what sort of work products to expect from a logging program and contractor (logging company). This course will utilize interesting examples of geophysical logs relative to the listed applications and topics covered.
Attendees are encouraged to bring their own borehole geophysical logs they have questions about, to discuss them with the instructors and course attendees.
Learning objectives
The objective of this course is to provide a basic framework and criteria for the use of borehole geophysics (wireline logs) in the design or rehabilitation/abandonment of resource/water supply wells. It will serve as a guide and will focus on the important applications of borehole geophysics in regards to resource/water supply wells. You will receive instruction on the following topics:
Who should attend?
Hampton Inn & Suites Denver-Downtown
1845 Sherman Street
Denver, Colorado 80203
303 864.8000
fax 303 864.8199
Accommodations: NGWA has secured a limited block of rooms on a first come, first served basis at the group rate of $145 per night. This rate applies to the NGWA room block and is valid until the September 21, 2012 cutoff, unless our block has been filled before that date. When making your reservations, be sure to mention you are attending this NGWA program. Remember, you are responsible for securing your own reservations. For guest check-in and checkout times, please contact the hotel directly.
8:00 a.m. Check in and distribution of course materials
8:15 a.m. Introduction of:
9:00 a.m. Break
9:15 a.m. Main uses of logs (overview)
9:45 a.m. Main types of logs (overview) listing and basic uses
10:15 a.m. Break
10:30 a.m. Borehole conditions
11:00 a.m. Spontaneous potential (SP) logs
11:20 a.m. Natural gamma ray (GR) logs
11:40 a.m. Exercise 1 – SP and GR
12:00 p.m. Lunch
1:00 p.m. Exercise 1 review
1:15 p.m. Conventional resistivity logs
2:00 p.m. Break
2:15 p.m. Focused resistivity logs
2:45 p.m. Qualitative water quality (salinity) evaluation
3:00 p.m. Exercises 2a and 2b — SP and resistivity
3:30 p.m. Break
3:45 p.m. Exercises 2a and 2b review
4:15 p.m. Nuclear logs
4:45 p.m. Acoustic logs
5:00 p.m. Course adjourns for the day
8:00 a.m. Identifying transmissive or water-producing zones
9:15 a.m. Vendor demonstration (outdoors)
10:30 a.m. Evaluating occurrence and distribution of aquifers and aquitards; basin analysis
11:30 a.m. Exercise 3 — aquifer and stratigraphic correlation
1:00 p.m. Review of Exercise 3
1:30 p.m. Planning well systems — evaluating relative water yield (open hole)
2:15 p.m. Break
2:30 p.m. Exercise 4 — evaluating relative water yield
3:15 p.m. Exercise 4 review
3:45 p.m. Break
4:00 p.m. Temperature/thermal and spinner flowmeter logs
4:30 p.m. Well construction evaluation
8:00 a.m. Well construction evaluation
8:45 a.m. Break
9:00 a.m. Vendor demonstration (outdoors)
10:00 a.m. Break
10:15 a.m. Well workovers and rehabilitation
11:00 a.m. Exercise 5— comprehensive well evaluation
11:30 a.m. Exercise 5 review
12:45 p.m. Well abandonment
1:15 p.m. Nuclear magnetic resonance (NMR) logs
2:15 p.m. Basic log quality considerations/validation of logs
2:45 p.m. Exercise 6 – SP and resistivity
3:00 p.m. Exercise 6 review
3:15 p.m. Break
3:30 p.m. Statement of work
4:00 p.m. Product
4:15 p.m. Wrap-up, questions, course evaluation, closing, notice of certificates
4:45 p.m. Course adjournment