Self-contained Lithodensity gamma-gamma ray density logging tool APGGKLP-90
Designed to measure rocks bulk density and determine rocks photoelectric absorption index.
Designed to explore very pitching and horizontal sections of oil- and gas-well bores filled with oil- and water based circulation fluid.
Active tasks:
- measure rocks bulk density and determine rocks photoelectric absorption index;
- detailed lithological identification and stratigraphic studies;
- оreservoir properties identification and rocks mineral composition identification.
Tool APGGKLP-90 can be manufactured in version with a removable source. Such a design allows radioactive source not to be left in a well in case of emergency.
Tool’s new design and developed probe ensure material quality, that is equal to operating quality of tools on logging cable.
| Measured parameters | Range | Accuracy |
| Rocks bulk density | between 1.7×103 and 3.1×103 g/cm3 |
between 1.7×103 and 2.0×103 g/cm3 ± 1.2 % |
| Photoelectric absorption index |
1.0÷7.0 b/e− |
±0.25 b/e− |
| General technical specifications | ||
| Tool overall length, mm | 3210 | max |
| Tool diameter, mm | 90 | max |
| Total tool weight, kg | 120 | max |
| Power supply, self-contained, V | 12.5 | |
| Maximum ambient temperature, °C | 90 (120) | |
| Maximum hydrostatic pressure, MPa | 80 | |
| Diameter of the hole, mm | 120÷300 | |
| Logging speed, m/h | 200 | max |
| Standalone downtime, hours in recording mode | 10 | |
| Record frequency, (samples per second) | 2 | |
| Sitting | on drill tool | |
Note: during logging in wells with temperature over +90ºC it is necessary to use either special heat-resisting power supply elements or thermostat control device for rechargeable battery pack.