| FEATURES |
| Short probe can be handled by single operator and easily shipped |
| Slim diameter for narrow boreholes |
| Rigid construction for effective centralisation |
| Down-hole digitisation of waveform data at 1cm interval |
| Data rate selectable up to 200kbaud for maximum logging speed |
| Detection gain and threshold under operator control. Detection point and wavelet visible on 'oscilloscope' display during logging |
| Optional natural-gamma measurement |
| MEASUREMENTS |
| Formation velocity (slowness) |
| Time of first arrival (delta-t) |
| Integrated transit time |
| Full waveform from 3 receivers simultaneously |
| Shear and Stoneley velocities (requires precessing software) |
| |
| APPLICATIONS |
Geotechnical
Mining
Water |
Fracture and permeability indication in hard rock
Rock strength and elasticity
Lithology identification
Correction of seismic velocity
Porosity
|
| OPERATING CONDITIONS |
| Borehole type |
Sonic: open-hole, water-filled
Centralisation: 2 essential |
| SPECIFICATIONS |
| Diameter |
45mm |
| Length |
2.45m |
| Weight |
8kg |
| Max. temperature |
70ºC |
| Max. pressure |
20MPa |
| Transducer type |
23kHz piezoelectric |
| Spacing |
Tx-Rx1: 600mm (24");
Tx -Rx2: 800mm (32")
Tx -Rx3: 1000mm (40") |
| Waveform acquisition |
512 x 16bit samples per receiver with 4µs sampling |
| Down-hole gain |
0db to 31db (surface control) |
| SALES INFORMATION |
| Probe |
| 25 086 000 |
Slim-hole Triple receiver sonic probe |
| Accessories |
| 21 030 000 |
Centraliser 90 - 180mm |
| 21 031 000 |
Centraliser 180 - 260mm |
| 21 032 000 |
Centraliser 260 - 342mm |
| 21 033 000 |
Centraliser 342 - 472mm |
