is designed for measuring of near-bit technological/geophysical parameters while drilling with bottom-hole hydraulic motors as well as for data transmitting by electromagnetic channel to the matrix telemetry system of ZTS-42EM, ZTS-42-KK-type.
- near-bit measurements;
- effective correction of well drilling practice;
- improved drilling quality;
- improved reliability of technological parameters measuring.
NDM-EM above-bit module is used in composition of telemetry system such as for ZTS-42 EM-M and ZTS-42-KK. Combination of measuring parameters is defined by a customer.
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Measurements range and error limits: |
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zenith angle, degree |
(0-180)±0.2 |
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bit revolutions, rpm |
(0-300)±10% |
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axial drilling bit load, kN: |
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modul diameter 102 mm |
(0-100)±10% |
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modul diameter 150 mm |
(0-400)±10% |
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Pressure in a bore-hole space, MPa |
0 – 40±10% |
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GR, microroentgen/h |
(1-100)±15% |
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Maximum operating temperature, ºC |
120 |
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Maximum hydrostatic pressure, MPa |
40 |
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Connection thread type |
Z-76, Z-117 |
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Tool dimensions, mm: diameter length |
102, 150 600 |
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Weight, kg |
20 |