| Drilling and workover |
| - |
Vertical, directional and horizontal
drilling |
 |
| - |
Wells for salt caverns and porous rock
storage |
| - |
Exploration wells |
| - |
Geothermal and balneological wells |
| - |
Oil and gas production wells |
| - |
Well completions for all types of underground
storage facilities |
| |
|
| |
|
| Measuring, testing |
| - |
Reservoir performance tests |
 |
| - |
Tightness and in-situ stress tests |
| - |
Deep sampling, measurement of interface,
pressure, temperature and flow rates in wells |
| |
|
| |
|
| Maintenance of rigs and drilling equipment |
| |
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