is designed for directional and horizontal well and sidetrack trajectory monitoring and control while drilling with the bottom-hole hydraulic motor.

Description

Features and Advantages

• controls the drilling trajectory of directional/horizontal well of up to 12-15 m radius of curvature;
• can be used in order to drill wells with big and small diameter, and also for casing string kick-off;
• static measurements;
• does not require any demands to mud in modification with galvanic cell power supply;
• can operate during drilling process on depression with deep aeration;
• gamma-ray measurements;
• can operate in complex with induction logging modul (IK), hereafter – with lateral log modul (BK) and neutron-neutron logging (NNK);
• can operate in complex with near bit modul NDM, which make measurements of zenith angle, axial load on bit, number of bit turns, rock gamma-radiation, hydraulic pressure;
• telesystem software allows to send data by information system channel “Distant drilling

Telemetry system is certified and has permission for use. When measuring ZTS-42EM-M is to be installed on standard non-magnetic drill collar.

Specifications

Measurement range, degree:

zenith angle,

 0-180

azimuth

 0-360

whipstock angle

0-360

Measurement error, degree:

 

zenith angle:

±0.2

     -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

±3

    -standoff angle within  the zenith range 7º-173º

±1

Exposure dose voltage measurement

 

Range of natural gamma-radiation, mcR/h

0-50±15%

Maximum operating temperature, ºC

120

Maximum operating pressure, MPa

60

Minimum internal diameter of non-magnetic drill collar, mm

54

Dimensions of downhole tool modules, mm:

   diameter

   module length

 

42

1000

Weight without housing, kg

50

Certificate

Telemetry system is certified and has permission for use.