is designed for directional and horizontal well and sidetrack trajectory monitoring and control while drilling with the bottom-hole hydraulic motor.
Features and Advantages
• reduces the time of drilling wells;
• improves the quality of the wiring;
• controls the drilling trajectory of directional and horizontal well of up to 12-15 m radius of curvature;
• provides an opportunity of carrying out of researches of seams by GL method;
• has the ability to measure in static.
NDM-EM near bit module is used in the system of ZTS-42EM-M, ZTS-42KK.
The combination of the measured parameters is determined by the customer.
|
Measurement range, degree: |
|
|
zenith angle |
0-180 |
|
azimuth |
0-360 |
|
whipstock angle |
0-360 |
|
natural gamma radiation exposure rate, microrentgen/h |
1-100 |
|
Measurement error, degree: |
|
|
zenith angle: |
±0.1 |
|
-azimuth within the zenith range 3º, 7º; 173º, 177º |
±3 |
|
-azimuth within the zenith range 7º, 173º: |
±1,5 |
|
whipstock orientation angle: |
|
|
-standoff angle within the zenith range 3º-7º; 173º-177º |
±2 |
|
-standoff angle within the zenith range 7º-173º |
±1 |
|
Maximum operating temperature, ºC |
120 |
|
Maximum operating pressure, MPa |
60 |
|
Minimum internal diameter of non-magnetic drill collar, mm |
57 |
|
Dimensions of downhole tool modules, mm: diameter module length |
42 1000 |
|
Weight without housing, kg |
50 |