1.800.833.7958
► Español
► 中文
Geotech Borehole Resistivity System
The Geotech Borehole Resistivity System is a rugged, portable, hand-operated downhole logger which measures both apparent resistivity and the natural self-potential (SP).
Applications include mineral exploration, subsurface mapping (isopachs), locating fresh and salt-water bearing information; lithologic and structural correlation between wells, and well construction.
- Measures both resistivity and self-potential (SP)
- Resistivity is read in a range of 0-10,000 ohm-feet
- Self-potential is read in a range of 1-1,000 millivolts, positive or negative
- Battery powered readout instrument, and indicator for resistivity and SP in a rugged water tight case
- 500 feet (152 m) of four-conductor downhole logging cable mounted on a portable hand reel
- 1" (2.5 cm) diameter probe assembly
- Two single-conductor insulated surface lines on storage reels
| Instrument: | ||
| Current |
9 milliamps | |
| Resistivity | DC, null-reading meter; 0-10,000 ohm-feet readable within ±0.10% full scale | |
| Self-Potential | Range, 0-1,000 millivolts, positive or negative | |
| Batteries | Six 9-volt transistor batteries; one C-cell battery | |
| Dimensions | 7" x 16" x 12" (18cm x 41cm x 30cm) | |
| Weight | 13 lbs. (6 kg) | |
| Cable: | ||
| Surface Type | Two single conductor insulated wires with connectors on cable storage reel | |
| Dimensions | 50 feet (15m) long (each) | |
| Net Weight | 2.5 lbs. (1 kg) | |
| Downhole Type | 4-conductor, ¼" (6.3mm) diameter, 500' (152m) length | |
| Reel: | ||
| Construction | Powder coated steel | |
| Dimensions | 13" x 12" x 15" (33cm x 30cm x 38cm) | |
| Weight | 30 lbs. (13.6 kg) | |
| Probe Assembly: | ||
| Type | One 1" (2.5cm) diameter current electrode and three potential electrodes mounted on 15 feet (4.5m) of cable with waterproof in-line connector for attaching to logging cable | |
| Weight | 1.5 lbs. (.68 kg) | |
| System Weight | 47 lbs. (21 kg) | |
