It is designed for drilling directional and horizontal wells and measuring the inclination angle, four-sector gamma-ray logging data, and motor shaft speed.

The measured parameters are transmitted to the MWD system and recorded in the memory.

Presentation of application experience.

Details

Description


Specific features and advantages

 - Measures immediately near the bit
 - Allows for instant adjustment of the well path
 - Improves horizontal well targeting quality in thin formations

Characteristics

Designation

Thread to bit

Bit diameter, mm

Lobes

Outer diameter, mm

DRZ-106.TS З-88 142,9-151,0 7/8 124
DRZ-120.TS З-88 142,9-165,1 7/8 130
DZR-172.TS З-117 214,3-244,5 7/8 189

Parameters

Measuring range of inclination angle, degrees  0-180
Permissible limits of intrinsic absolute error when measuring inclination angle, max

±0,12′
Measuring range of natural gamma radiation exposure rate, mcR/h 2-100
Permissible limits of intrinsic relative error when measuring natural gamma radiation exposure rate, max
± 15%

It operates together with MWD systems of ZTK-42EM, ZTK-42KK and APS Technology type. It can be connected to any other MWD system at request.