Near-bit Measurement System

Key point to realize Logging While Drilling

Product Introduction

Product Description



◆ Near-bit inclination and dynamic gamma-ray imaging measurements
◆ The upper and lower nodes transmit data via wireless electromagnetic waves
◆ Can be used with motor drillers and rotary guide tools

◆ Independent power supply system
◆ Applicable to any type of mud


◆ Horizontal well, large displacement well, directional well

◆ The boundary has the geological guidance which the dip Angle changes
◆ Selection of casing running point

Product Parameters

transmission distance Standard screw 9 m (in water or air)
Deviation measurement range and accuracy 0~180°±0.3°(static), ±0.5°(dynamic)
Gamma-ray range 0~512API
Gamma output interval 1~255s Programmable,step  1s
Gamma azimuth zonal resolution 1°,precision
Storage Capacity 64Mbit
operation rotate speed 30~450rpm
continuous working period ≥200h
The instrument outside diameter Φ172mm
Gamma sensor position Distance from the drill bit < 600mm
Deviation sensor position Distance from the drill bit < 600mm

Enviromental Parameters

Operating temperature 0~150℃
Biggest pressure 120Mpa/17400Psi

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