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.

 

Features and Advantages

  • 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.

Specifications

Measurements range and error limits:

          zenith angle, degree

(0-180)±0.2

          bit revolutions, rpm

(0-300)±10%

axial drilling bit load, kN:

(0-100)±10%

      modul diameter 102 mm

(0-400)±5%

      modul diameter 150 mm

(0-40)±5%

Pressure in a bore-hole space, MPa

(0-60)

GR, microroentgen/h

(1-100)±15%

Specific electric resistance of formation, Ohm

(0.1-100) ±10%

Maximum operating temperature, ºC

120

Maximum hydrostatic pressure, MPa

40

Connection thread type

Z-76, Z-117

Tool dimensions, mm:

      diameter

       length

 

102, 150

 600

Weight, kg

20

Certificate