Description

The Directional Probe Tube is a key downhole tool within the Measurement While Drilling (MWD) system, responsible for precisely sensing and recording the wellbore's spatial orientation and motion.

buy Directional Probe Tube

Core Functions

Directional Surveying: Accurately measures critical steering parameters such as Wellbore Inclination, Azimuth, and Gravity/Magnetic Toolface.

Data Storage & Transmission: Features a built-in 64MB memory and uses an RS485 bus for data communication and connecting external tools.

Hardware Configuration

Core Sensors

Equipped with a 3-axis High-Temperature Fluxgate Magnetometer and a 3-axis High-Temperature Accelerometer, ensuring high accuracy and reliability in high-temperature environments.

Extended Monitoring

Includes a vibration sensor to monitor dynamics such as RPM and Stick-Slip.

Advanced Manufacturing

The circuit is built using full-metal encapsulated high-temperature Multi-Chip Module (MCM) technology and mounted with high-strength screws for robust durability.

Specification Parameters

Parameter	Measurement Range	Accuracy
Inclination	0~180°	±0.1°
Azimuth	5≤INC<10°	2°
	10≤INC<80°	1°
	INC≥80°	0.5°
Toolface-Gravity	0~360°	±0.5°
Toolface-Magnetic	0~360°	±0.5°
Gravity Sum (GT)	0~2.000g	±0.002g
Terrestrial Magnetic Field (TMF)	0~1Gauss	0.003Gauss
Temperature	-40~210℃	±1℃
Rotation Measurement	0~400rpm	±5rpm
DC Input Voltage Range	+22~+40V
Power Dissipation	<1W (excluding shock and vibration measurement module)
Communication Interface	RS485
Baud Rate	115200bps
Memory Capacity	64MB
Tool Outer Diameter (O.D.)	47.6mm
Random Vibration	20g RMS, 50-1000Hz, Random
Mechanical Shock	1000g, 0.5ms, half-sine
Operating Temperature	-40~+200℃
Survival Temperature	-40~+210℃

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